WO2021213100A1

WO2021213100A1 - Projection display method and projection device

Info

Publication number: WO2021213100A1
Application number: PCT/CN2021/081911
Authority: WO
Inventors: 崔荣荣; 曹利明
Original assignee: 青岛海信激光显示股份有限公司
Priority date: 2020-04-20
Filing date: 2021-03-19
Publication date: 2021-10-28
Also published as: CN115428441A; CN113542701A

Abstract

Disclosed are a projection display method and a projection device, which belong to the field of projection display. The method comprises: acquiring a plurality of frames of sub-images; according to a primary color gradation value of a pixel in each frame of sub-image, controlling a light valve to flip, so as to successively display the plurality of frames of sub-images on a projection screen in a projected manner; and during a process of projection display of each frame of sub-image, transmitting a galvanometer current control signal corresponding to the sub-image to a galvanometer drive component, wherein galvanometer current control signals corresponding to different frames of sub-images are different; moreover, during the process of projection display of the plurality of frames of sub-images, the current direction of a galvanometer drive current is alternately changed.

Description

投影显示方法及投影设备Projection display method and projection equipment

相关申请的交叉引用Cross-references to related applications

本申请要求在2020年4月20日提交中国专利局、申请号为202010313260.X，发明名称为投影显示方法及投影设备的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on April 20, 2020, the application number is 202010313260.X, and the invention title is projection display method and projection equipment, the entire content of which is incorporated into this application by reference.

技术领域Technical field

本公开涉及激光投影技术领域，特别涉及一种投影显示方法及投影设备。The present disclosure relates to the field of laser projection technology, and in particular to a projection display method and projection equipment.

背景技术Background technique

目前，投影设备在显示待投影图像的过程中，若确定投影设备的分辨率小于待投影图像的分辨率，则投影设备需要将该待投影图像中的部分像素进行去除处理，并显示处理后的待投影图像，以确保该投影设备能够显示该处理后的待投影图像。At present, in the process of displaying the image to be projected by the projection device, if it is determined that the resolution of the projection device is less than the resolution of the image to be projected, the projection device needs to remove some pixels in the image to be projected and display the processed image. The image to be projected to ensure that the projection device can display the processed image to be projected.

但是，由于投影设备需要将该待投影图像中的部分像素进行去除处理，使得最终显示的图像效果较差。However, because the projection device needs to remove some pixels in the image to be projected, the effect of the final displayed image is poor.

发明内容Summary of the invention

本公开实施例一方面，提供了一种投影显示方法，应用于投影设备中的显示控制组件，投影设备还包括：至少一个激光器驱动组件、光源、光阀、振镜驱动组件以及振镜，光源包括与至少一个激光器驱动组件一一对应的至少一组激光器；方法包括：In one aspect of the embodiments of the present disclosure, a projection display method is provided, which is applied to a display control component in a projection device. The projection device further includes: at least one laser drive component, a light source, a light valve, a galvanometer drive component, and a galvanometer, a light source Including at least one group of lasers corresponding to at least one laser driving component; the method includes:

获取多帧子图像，多帧子图像由待投影的目标图像分解得到，其中，目标图像的分辨率大于光阀的分辨率，每帧子图像的分辨率不大于光阀的分辨率；Acquire multiple frames of sub-images, which are obtained by decomposing the target image to be projected, wherein the resolution of the target image is greater than the resolution of the light valve, and the resolution of each frame of sub-image is not greater than the resolution of the light valve;

在光源发出的三基色光时序性的照射至光阀的过程中，根据每帧子图像中像素的基色色阶值控制光阀进行翻转，以将多帧子图像依次投影显示至投影屏幕上；In the process of sequentially irradiating the light valve with the three primary colors emitted by the light source, the light valve is controlled to flip according to the primary color gradation value of the pixel in each frame of sub-image, so that multiple frames of sub-images are projected and displayed on the projection screen in sequence;

在投影显示每帧子图像的过程中，将对应子图像的振镜电流控制信号传输至振镜驱动组件，振镜电流控制信号用于控制振镜驱动组件向振镜提供振镜驱动电流，以驱动振镜偏转；In the process of projecting and displaying each frame of sub-images, the galvanometer current control signal corresponding to the sub-image is transmitted to the galvanometer drive assembly. The galvanometer current control signal is used to control the galvanometer drive assembly to provide the galvanometer drive current to the galvanometer. Drive the galvanometer to deflect;

其中，不同帧子图像对应的振镜电流控制信号不同；并且，在投影显示多帧子图像的过程中，振镜驱动电流的电流方向交替变化。Wherein, the galvanometer current control signals corresponding to the sub-images of different frames are different; and, during the process of projecting and displaying multiple frames of sub-images, the current direction of the galvanometer driving current changes alternately.

另一方面，本申请实施例还提供了一种投影设备，投影设备包括显示控制组件、光源、光阀、投影镜头、振镜驱动组件以及振镜，振镜位于光阀和投影镜头之间；On the other hand, an embodiment of the present application also provides a projection device, which includes a display control component, a light source, a light valve, a projection lens, a galvanometer drive assembly, and a galvanometer, the galvanometer is located between the light valve and the projection lens;

显示控制组件用于：The display control component is used for:

获取多帧子图像，多帧子图像由待投影的目标图像分解得到，目标图像的分辨率大于光阀的分辨率，每帧子图像的分辨率不大于光阀的分辨率；Acquire multiple frames of sub-images, which are obtained by decomposing the target image to be projected, the resolution of the target image is greater than the resolution of the light valve, and the resolution of each frame of sub-images is not greater than the resolution of the light valve;

在光源发出的三基色光时序性的照射至光阀的过程中，根据每帧子图像中像素的基色色阶值控制光阀进行翻转，以将多帧子图像通过投影镜头依次投影至投影屏幕上；In the process of sequential irradiation of the three primary colors from the light source to the light valve, the light valve is controlled to flip according to the primary color gradation value of the pixel in each frame of sub-image, so that multiple frames of sub-images are sequentially projected to the projection screen through the projection lens superior;

在投影显示每帧子图像的过程中，向振镜驱动组件传输对应子图像的振镜电流控制信号；振镜驱动组件用于在振镜电流控制信号的控制下向振镜提供振镜驱动电流，以驱动振镜偏转；In the process of projecting and displaying each frame of sub-image, the galvanometer current control signal corresponding to the sub-image is transmitted to the galvanometer drive assembly; the galvanometer drive assembly is used to provide the galvanometer drive current to the galvanometer under the control of the galvanometer current control signal To drive the deflection of the galvanometer;

附图说明Description of the drawings

为了更清楚地说明本公开实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly describe the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

图1是本公开实施例提供的一种投影设备的结构示意图；FIG. 1 is a schematic structural diagram of a projection device provided by an embodiment of the present disclosure;

图2是本公开实施例提供的另一种投影设备的结构示意图；2 is a schematic structural diagram of another projection device provided by an embodiment of the present disclosure;

图3是本公开实施例提供的又一种投影设备的结构示意图；FIG. 3 is a schematic structural diagram of another projection device provided by an embodiment of the present disclosure;

图4是本公开实施例提供的一种投影显示方法的流程图；4 is a flowchart of a projection display method provided by an embodiment of the present disclosure;

图5是本公开实施例提供的一种振镜处于原始位置时第一帧子图像在投影屏幕显示的示意图；5 is a schematic diagram of a first frame of sub-image displayed on a projection screen when the galvanometer is in the original position according to an embodiment of the present disclosure;

图6是本公开实施例提供的一种振镜偏转时第一帧子图像在投影屏幕显示的示意图；6 is a schematic diagram of a first frame of sub-image displayed on a projection screen when the galvanometer mirror is deflected according to an embodiment of the present disclosure;

图7是本公开实施例提供的一种振镜沿不同的轴旋转的过程中振镜偏转位置的示意图；FIG. 7 is a schematic diagram of the deflection position of the galvanometer during the rotation of the galvanometer along different axes according to an embodiment of the present disclosure;

图8是本公开实施例提供的另一种振镜偏转时第二帧子图像在投影屏幕显示的示意图；FIG. 8 is a schematic diagram of another sub-image of the second frame displayed on the projection screen when the galvanometer mirror is deflected according to an embodiment of the present disclosure; FIG.

图9是本公开实施例提供的一种驱动振镜沿第二轴偏转的振镜驱动电流的波形图；9 is a waveform diagram of a galvanometer driving current for driving a galvanometer to deflect along a second axis according to an embodiment of the present disclosure;

图10是本公开实施例提供的又一种振镜偏转时第三帧子图像在投影屏幕显示的示意图；FIG. 10 is a schematic diagram of another sub-image of the third frame displayed on the projection screen when the galvanometer is deflected according to an embodiment of the present disclosure; FIG.

图11是本公开实施例提供的再一种振镜偏转时第四帧子图像在投影屏幕显示的示意图；FIG. 11 is a schematic diagram of still another sub-image of the fourth frame displayed on the projection screen when the galvanometer is deflected according to an embodiment of the present disclosure; FIG.

图12是本公开实施例提供的又一种振镜偏转时第一帧子图像在投影屏幕显示的示意图；FIG. 12 is a schematic diagram of another sub-image of the first frame displayed on the projection screen when the galvanometer is deflected according to an embodiment of the present disclosure; FIG.

图13是本公开实施例提供的一种振镜的结构示意图；FIG. 13 is a schematic structural diagram of a galvanometer provided by an embodiment of the present disclosure;

图14是本公开实施例提供的一种振镜中的电路板的结构示意图；FIG. 14 is a schematic structural diagram of a circuit board in a galvanometer provided by an embodiment of the present disclosure;

图15是本公开实施例提供的一种振镜中的光学镜面的结构示意图；15 is a schematic structural diagram of an optical mirror surface in a galvanometer provided by an embodiment of the present disclosure;

图16是本公开实施例提供的一种驱动振镜偏转的示意图；FIG. 16 is a schematic diagram of driving a galvanometer to deflect according to an embodiment of the present disclosure;

图17是本公开实施例提供的一种驱动振镜以第二轴为旋转轴沿第四方向偏转的示意图；FIG. 17 is a schematic diagram of a driving galvanometer provided by an embodiment of the present disclosure to deflect in a fourth direction with the second axis as the rotation axis;

图18是本公开实施例提供的一种相关技术中的投影设备的结构示意图。FIG. 18 is a schematic structural diagram of a projection device in a related technology provided by an embodiment of the present disclosure.

具体实施方式Detailed ways

为使本公开的目的、技术方案和优点更加清楚，下面将结合附图对本公开实施方式作进一步地详细描述。In order to make the objectives, technical solutions, and advantages of the present disclosure clearer, the following further describes the embodiments of the present disclosure in detail with reference to the accompanying drawings.

图1是本公开实施例提供的一种投影设备的结构示意图，图2是本公开实施例提供的另一种投影设备的结构示意图，图3是本公开实施例提供的又一种投影设备的结构示意图。如图1、图2和图3所示，该投影设备可以包括显示控制组件10、至少一个激光器驱动组件20、光源30、光阀40、振镜驱动组件50以及振镜60，该光源30可以包括与至少一个激光器驱动组件20一一对应的至少一组激光器。该至少一个是指一个或多个，多个是指两个或两个以上。该至少一组是指一组或多组，多组是指两组或两组以上，每组激光器可以包括一个或多个激光器。FIG. 1 is a schematic structural diagram of a projection device provided by an embodiment of the present disclosure, FIG. 2 is a schematic structural diagram of another projection device provided by an embodiment of the present disclosure, and FIG. 3 is a schematic diagram of another projection device provided by an embodiment of the present disclosure Schematic. As shown in FIGS. 1, 2 and 3, the projection device may include a display control assembly 10, at least one laser driving assembly 20, a light source 30, a light valve 40, a galvanometer driving assembly 50, and a galvanometer 60. The light source 30 may It includes at least one group of lasers corresponding to at least one laser driving assembly 20 one-to-one. The at least one refers to one or more, and multiple refers to two or more. The at least one group refers to one or more groups, and the multiple groups refers to two or more than two groups, and each group of lasers may include one or more lasers.

其中，该显示控制组件10可以为数字光处理芯片(digital light processing chip，DLPC)。示例的，该显示控制组件10可以为DLPC 6540。该光源30可以为激光光源，例如，参考图1，该激光光源可以包括蓝色激光器301、红色激光器302和绿色激光器303。该光阀40可以为数字微镜器件(digital micro-mirror device，DMD)。该振镜60可以用于将不同帧子图像偏移至投影屏幕的不同位置，从而实现该多帧子图像的叠加显示，进而达到扩展投影设备的分辨率的效果。可选的，该振镜60可以具有四个偏转位置，即该振镜60可以将子图像偏移至投影屏幕的四个不同位置。Wherein, the display control component 10 may be a digital light processing chip (digital light processing chip, DLPC). For example, the display control component 10 may be DLPC6540. The light source 30 may be a laser light source. For example, referring to FIG. 1, the laser light source may include a blue laser 301, a red laser 302 and a green laser 303. The light valve 40 may be a digital micro-mirror device (DMD). The galvanometer 60 can be used to shift the sub-images of different frames to different positions on the projection screen, so as to realize the superimposed display of the sub-images of the multiple frames, thereby achieving the effect of expanding the resolution of the projection device. Optionally, the galvanometer 60 may have four deflection positions, that is, the galvanometer 60 may shift the sub-image to four different positions on the projection screen.

图4是本公开实施例提供的一种投影显示方法的示意图。该投影显示方法可以应用于图1、图2和图3所示的投影设备中的显示控制组件10。该投影设备还可以包括至少一个激光器驱动组件20、光源30、光阀40、振镜驱动组件50以及振镜60，光源30可以包括与至少一个激光器驱动组件20一一对应的至少一组激光器。如图4所示，该方法可以包括：FIG. 4 is a schematic diagram of a projection display method provided by an embodiment of the present disclosure. The projection display method can be applied to the display control component 10 in the projection device shown in FIGS. 1, 2 and 3. The projection device may further include at least one laser drive assembly 20, a light source 30, a light valve 40, a galvanometer drive assembly 50, and a galvanometer 60. The light source 30 may include at least one group of lasers corresponding to the at least one laser drive assembly 20 one-to-one. As shown in Figure 4, the method may include:

步骤401、获取多帧子图像。Step 401: Obtain multiple frames of sub-images.

其中，多帧子图像由待投影的目标图像分解得到，该目标图像的分辨率大于光阀的分辨率，划分后的每帧子图像的分辨率不大于光阀的分辨率，例如可以等于光阀的分辨率。Among them, the multiple frames of sub-images are obtained by decomposing the target image to be projected, the resolution of the target image is greater than the resolution of the light valve, and the resolution of each frame of sub-images after division is not greater than the resolution of the light valve, for example, it may be equal to the resolution of the light valve. The resolution of the valve.

可选的，目标图像的分辨率可以为M×N，该M为该目标图像中每行像素的个数，该N为每列像素的个数。该光阀的分辨率为M1×N1，该M1为该光阀能够投影显示的图像中每行像素的个数，该N1为每列像素的个数。该每帧子图像的分辨率可以为m1×n1，该m1为该每帧子图像中每行像素的个数，该n1为每列像素的个数。该M、N、M1、N1、m1和n1均为大于1的正整数，且该M大于M1，N大于N1，m1不大于M1，n1不大于N1。Optionally, the resolution of the target image may be M×N, where M is the number of pixels in each row of the target image, and N is the number of pixels in each column. The resolution of the light valve is M1×N1, where M1 is the number of pixels in each row of the image that the light valve can project and display, and the N1 is the number of pixels in each column. The resolution of each frame of sub-image may be m1×n1, where m1 is the number of pixels in each row of the sub-image of each frame, and n1 is the number of pixels in each column. The M, N, M1, N1, m1, and n1 are all positive integers greater than 1, and the M is greater than M1, N is greater than N1, m1 is not greater than M1, and n1 is not greater than N1.

示例的，该目标图像的分辨率可以为3840×2160，即M为3840，该N为2160。该光阀的分辨率可以为1920×1080，即M1为1920，该N1为1080。该目标图像的分辨率1920×1080，即m1为1920，n1为1080。该目标图像的分辨率3840×2160大于光阀的分辨率1920×1080，每帧子图像的分辨率1920×1080等于该光阀的分辨率1920×1080。For example, the resolution of the target image may be 3840×2160, that is, M is 3840 and N is 2160. The resolution of the light valve may be 1920×1080, that is, M1 is 1920, and N1 is 1080. The resolution of the target image is 1920×1080, that is, m1 is 1920 and n1 is 1080. The resolution of the target image of 3840×2160 is greater than the resolution of the light valve of 1920×1080, and the resolution of each frame of sub-images of 1920×1080 is equal to the resolution of the light valve of 1920×1080.

在本公开实施例中，若该投影设备为投影电视机，则该投影设备还可以包括主控制芯片00，参考图2，该显示控制组件10可以与主控制芯片00连接。投影设备在投影显示待投影的目标图像时，该主控制芯片00可以将待投影的目标图像的图像信号进行解码，并以60赫兹(HZ)的频率将解码后的目标图像的图像信号发送至显示控制组件10，相应的，该显示控制组件10可以接收到该主控制芯片00发送的该解码后的目标图像的图像信号。之后，显示控制组件10可以根据接收到的解码后的目标图像的图像信号划分为多个子图像信号，以实现将目标图像划分为多帧子图像。In the embodiment of the present disclosure, if the projection device is a projection television, the projection device may further include a main control chip 00. Referring to FIG. 2, the display control component 10 may be connected to the main control chip 00. When the projection device displays the target image to be projected, the main control chip 00 can decode the image signal of the target image to be projected, and send the decoded image signal of the target image to the The display control component 10, correspondingly, the display control component 10 can receive the image signal of the decoded target image sent by the main control chip 00. After that, the display control component 10 may divide the received decoded image signal of the target image into a plurality of sub-image signals, so as to realize the division of the target image into multiple frames of sub-images.

示例的，该图像信号可以为4K(即3840×2160)视频信号或数字电视信号，该划分后的每帧子图像信号可以为2K(1920×1080)视频信号或数字电视信号。For example, the image signal may be a 4K (that is, 3840×2160) video signal or a digital TV signal, and each frame of the divided sub-image signal may be a 2K (1920×1080) video signal or a digital TV signal.

步骤402、将每帧子图像的三种基色一一对应的至少一个使能信号分别传输至对应的激光器驱动组件。Step 402: At least one enable signal corresponding to the three primary colors of each frame of sub-images is respectively transmitted to the corresponding laser driving component.

在本公开实施例中，该显示控制组件10与每个激光器驱动组件20连接。显示控制组件10在将待投影的目标图像划分为多帧子图像后，可以输出该每帧子图像的三种基色一一对应的至少一个使能信号，并将该至少一个使能信号传输至对应的激光器驱动组件20。In the embodiment of the present disclosure, the display control component 10 is connected to each laser driving component 20. After dividing the target image to be projected into multiple frames of sub-images, the display control component 10 may output at least one enable signal corresponding to the three primary colors of each frame of sub-images, and transmit the at least one enable signal to The corresponding laser drive assembly 20.

步骤403、将每帧子图像的三种基色一一对应的至少一个激光电流控制信号分别传输至对应的激光器驱动组件。Step 403: Transmit at least one laser current control signal corresponding to the three primary colors of each frame of sub-images to the corresponding laser driving components respectively.

在本公开实施例中，该显示控制组件10在将待投影的目标图像划分为多帧子图像后，还可以输出该每帧子图像的三种基色一一对应的至少一个激光电流控制信号，并将该至少一个激光电流控制信号传输至对应的激光器驱动组件20。该激光电流控制信号用于指示激光器驱动组件20向其所连接的激光器提供对应的激光驱动电流，以驱动激光器发出激光。其中，该激光电流控制信号可以是脉冲宽度调制(pulse width modulation，PWM)信号。In the embodiment of the present disclosure, after the display control component 10 divides the target image to be projected into multiple frames of sub-images, it can also output at least one laser current control signal corresponding to the three primary colors of each frame of sub-images. And the at least one laser current control signal is transmitted to the corresponding laser driving component 20. The laser current control signal is used to instruct the laser driving component 20 to provide a corresponding laser driving current to the laser connected to it to drive the laser to emit laser light. Wherein, the laser current control signal may be a pulse width modulation (PWM) signal.

参考图1，若该投影设备包括三个激光器驱动组件20，相应的，该光源30包括与该三个激光器驱动组件20一一对应的三组激光器，该三组激光器可以分别为蓝色激光器301、红色激光器302和绿色激光器303，该蓝色激光器301、红色激光器302和绿色激光器303分别与对应的激光器驱动组件20连接。其中，该蓝色激光器301用于出射蓝色激光，该红色激光器302用于出射红色激光，该绿色激光器303用于出射绿色激光。该投影设备可以称为三色激光投影设备。1, if the projection device includes three laser driving components 20, correspondingly, the light source 30 includes three groups of lasers corresponding to the three laser driving components 20 one-to-one, and the three groups of lasers may be blue lasers 301, respectively. , A red laser 302 and a green laser 303, the blue laser 301, the red laser 302 and the green laser 303 are respectively connected to the corresponding laser driving assembly 20. The blue laser 301 is used for emitting blue laser, the red laser 302 is used for emitting red laser, and the green laser 303 is used for emitting green laser. This projection device can be called a three-color laser projection device.

参考图1，该显示控制电路10基于每帧子图像的蓝色基色分量输出与蓝色激光器301对应的蓝色PWM信号B_PWM，并基于蓝色激光器301在驱动周期内的点亮时长，输出与蓝色激光器301对应的使能信号B_EN。之后将该每帧子图像的蓝色基色分量对应的蓝色PWM信号B_PWM和使能信号B_EN传输至激光器驱动组件20，该激光器驱动组件20为蓝色激光器301对应的驱动组件。该蓝色激光器301对应的激光器驱动组件20可以响应于该蓝色PWM信号B_PWM和使能信号B_EN，向该蓝色激光器301提供对应的激光驱动电流，以驱动该蓝色激光器301发出蓝色激光。Referring to FIG. 1, the display control circuit 10 outputs a blue PWM signal B_PWM corresponding to the blue laser 301 based on the blue primary color component of each frame of sub-image, and based on the lighting time of the blue laser 301 in the driving period, outputs and The enable signal B_EN corresponding to the blue laser 301. Then, the blue PWM signal B_PWM and the enable signal B_EN corresponding to the blue primary color component of each frame of sub-image are transmitted to the laser driving component 20, which is a driving component corresponding to the blue laser 301. The laser driving component 20 corresponding to the blue laser 301 can respond to the blue PWM signal B_PWM and the enable signal B_EN to provide a corresponding laser driving current to the blue laser 301 to drive the blue laser 301 to emit blue laser .

该显示控制电路10可以基于每帧子图像的红色基色分量输出与红色激光器302对应的红色PWM信号R_PWM，并基于红色激光器302在驱动周期内的点亮时长，输出与红色激光器302对应的使能信号R_EN。之后将该每帧子图像的红色基色分量对应的红色PWM信号R_PWM和使能信号R_EN传输至激光器驱动组件20，该激光器驱动组件20为红色激光器302对应的驱动组件。该红色激光器302对应的激光器驱动组件20可以响应于该红色PWM信号R_PWM和使能信号R_EN，向该红色激光器302提供对应的激光驱动电流，以驱动该红色激光器302发出红色激光。The display control circuit 10 can output the red PWM signal R_PWM corresponding to the red laser 302 based on the red primary color component of each frame of sub-image, and output the enable corresponding to the red laser 302 based on the lighting time of the red laser 302 in the driving period. Signal R_EN. After that, the red PWM signal R_PWM and the enable signal R_EN corresponding to the red primary color component of each frame of sub-image are transmitted to the laser driving component 20, which is a driving component corresponding to the red laser 302. The laser driving component 20 corresponding to the red laser 302 can respond to the red PWM signal R_PWM and the enable signal R_EN to provide a corresponding laser driving current to the red laser 302 to drive the red laser 302 to emit red laser light.

该显示控制电路10可以基于每帧子图像的绿色基色分量输出与绿色激光器303对应的绿色PWM信号G_PWM，并基于绿色激光器303在驱动周期内的点亮时长，输出与绿色激光器303对应的使能信号G_EN。之后将该每帧子图像的绿色基色分量对应的绿色PWM信号G_PWM和使能信号G_EN传输至激光器驱动组件20，该激光器驱动组件20为绿色激光器303对应的驱动组件。该绿色激光器303对应的激光器驱动组件20可以响应于该绿色PWM信号G_PWM和使能信号G_EN，向该绿色激光器303提供对应的激光驱动电流，以驱动该绿色激光器303发出绿色激光。The display control circuit 10 can output the green PWM signal G_PWM corresponding to the green laser 303 based on the green primary color component of each frame of sub-image, and output the enable corresponding to the green laser 303 based on the lighting time of the green laser 303 in the driving period. Signal G_EN. Then, the green PWM signal G_PWM and the enable signal G_EN corresponding to the green primary color component of each frame of sub-image are transmitted to the laser driving component 20, which is a driving component corresponding to the green laser 303. The laser driving component 20 corresponding to the green laser 303 can respond to the green PWM signal G_PWM and the enable signal G_EN to provide a corresponding laser driving current to the green laser 303 to drive the green laser 303 to emit green laser light.

步骤404、根据每帧子图像中像素的基色色阶值控制光阀进行翻转，以将多帧子图像依次投影显示至投影屏幕上。Step 404: Control the light valve to flip according to the primary color gradation values of the pixels in each frame of sub-images, so as to sequentially project and display multiple frames of sub-images on the projection screen.

在本公开实施例中，在控制激光器开始发出激光后，显示控制组件10可以根据每帧子图像中像素的基色色阶值控制光阀40进行翻转，以光阀中微镜翻转的时间长短来实现该基色色阶值，配合对应照射到光阀上的对应颜色光，形成了对应像素三基色的灰阶，进而将该多帧子图像依次投影显示至投影屏幕，并通过控制振镜偏转将该多帧子图像显示至投影屏幕的不同位置。In the embodiment of the present disclosure, after the laser is controlled to start emitting laser light, the display control component 10 can control the light valve 40 to flip according to the primary color gradation values of the pixels in each frame of sub-images, depending on the length of time the micromirror in the light valve flips. Realize the color scale value of the primary color, cooperate with the corresponding color light irradiated on the light valve to form the gray scale of the three primary colors of the corresponding pixel, and then project the multi-frame sub-images to the projection screen in turn, and control the deflection of the galvanometer. The multiple frames of sub-images are displayed on different positions of the projection screen.

在本公开实施例中，该多帧子图像可以包括四帧子图像。在每个激光器发出的激光照射至光阀40时，显示控制组件10可以根据每帧子图像中像素的基色色阶值控制光阀40进行翻转，以将该多帧子图像依次投影显示至投影屏幕。例如，该基色色阶值可以为红色绿色蓝色(red green blue，RGB)色阶值。In an embodiment of the present disclosure, the multiple frames of sub-images may include four frames of sub-images. When the laser light emitted by each laser is irradiated to the light valve 40, the display control component 10 can control the light valve 40 to flip according to the primary color gradation value of the pixel in each frame of sub-image, so that the multiple frames of sub-images can be projected and displayed in sequence. Screen. For example, the primary color gradation value may be red green blue (RGB) gradation value.

可选的，参考图3，若该激光投影设备中的光源30包括集成设置的两组红色激光器302、一组蓝色激光器301和一组绿色激光器303。该投影设备可以称为全色激光投影设备。该投影设备中的蓝色激光器301设置在红色激光器302和绿色激光器303的中间。由于蓝色激光器301所能承受的温度更高，因此将该蓝色激光器301设置在红色激光器302和绿色激光器303的中间，该设置方式更有利于红色激光器302和绿色激光器303的快速散热，使得该集成设置的多组激光器的可靠性更高。参考图3，该全色激光投影设备还可以包括四个反射镜片70、透镜组件80、扩散轮90、光导管100、全内反射(total internal reflection，TIR)透镜110、投影镜头120和投影屏幕130。其中，该透镜组件80包括第一透镜801、第二透镜802和第三透镜803。该每组激光器对应设置有一个反射镜片70。Optionally, referring to FIG. 3, if the light source 30 in the laser projection device includes two sets of red lasers 302, a set of blue lasers 301, and a set of green lasers 303 that are integrated. This projection device can be called a full-color laser projection device. The blue laser 301 in the projection device is arranged between the red laser 302 and the green laser 303. Since the blue laser 301 can withstand a higher temperature, the blue laser 301 is placed in the middle of the red laser 302 and the green laser 303. This setting is more conducive to the rapid heat dissipation of the red laser 302 and the green laser 303, so that The multiple sets of lasers in this integrated configuration are more reliable. 3, the full-color laser projection device may also include four reflective lenses 70, a lens assembly 80, a diffuser 90, a light pipe 100, a total internal reflection (TIR) lens 110, a projection lens 120, and a projection screen 130. Wherein, the lens assembly 80 includes a first lens 801, a second lens 802 and a third lens 803. Each group of lasers is correspondingly provided with a reflecting mirror 70.

在投影显示第一帧子图像的过程中，该蓝色激光器301出射的蓝色激光经过相应位置处的反射镜片70反射，并经过第一透镜801聚光，透过扩散轮90匀光，再经过光导管100进行全反射匀光。红色激光器302出射的红色激光经过相应位置处的反射镜片70反射，并经过第一透镜801聚光，透过扩散轮90对红色激光进行消散斑和色度匀光，再经过光导管100进行全反射匀光。绿色激光器303出射的绿色激光经过相应位置处的反射镜片70反射，并经过第一透镜801聚光，透过扩散轮90对绿色激光进行消散斑和色度匀光，再经过光导管100进行全反射匀光。该经过光导管100匀光后的蓝色激光、红色激光和绿色激光分时经过第二透镜802和第三透镜803整形，并进入TIR透镜110全反射，在该三基色光时序性的照射至光阀的过程中，显示控制组件10根据第一帧子图像中像素的基色色阶值控制光阀40进行翻转，该翻转后的光阀40将经过TIR透镜110全反射的光进行反射，并再次透过TIR透镜110，并经过振镜60偏转，最后经过投影镜头120投射到投影屏幕130上，以实现在投影屏幕上显示第一帧子图像。之后，再依次投影显示第二帧子图像、第三帧子图像和第四帧子图像。In the process of projecting and displaying the first frame of sub-images, the blue laser light emitted by the blue laser 301 is reflected by the reflection lens 70 at the corresponding position, collected by the first lens 801, and uniformed through the diffuser 90, and then The light pipe 100 undergoes total reflection and homogenization. The red laser light emitted by the red laser 302 is reflected by the reflecting mirror 70 at the corresponding position and collected by the first lens 801. The red laser light is defocused and chromatic uniformed through the diffuser wheel 90, and then passes through the light pipe 100 for total Reflect even light. The green laser light emitted by the green laser 303 is reflected by the reflecting mirror 70 at the corresponding position and collected by the first lens 801. The green laser light is diffused and chromatic uniformed through the diffuser 90, and then passes through the light pipe 100 Reflect even light. The blue laser, red laser, and green laser that have been homogenized through the light pipe 100 are time-sharing shaped by the second lens 802 and the third lens 803, and enter the TIR lens 110 for total reflection, where the three primary colors are sequentially irradiated to During the light valve process, the display control component 10 controls the light valve 40 to flip according to the primary color gradation value of the pixel in the first frame of sub-image. The flipped light valve 40 reflects the light totally reflected by the TIR lens 110, and It passes through the TIR lens 110 again, is deflected by the galvanometer 60, and finally is projected onto the projection screen 130 through the projection lens 120, so as to display the first frame of sub-image on the projection screen. After that, the second frame of sub-image, the third frame of sub-image, and the fourth frame of sub-image are successively projected and displayed.

此外，如图3所示，该投影设备还可以包括：设置在每个激光器的出光侧的一个第一亮度传感器W1，该第一亮度传感器W1用于检测对应的一个激光器的发光亮度。蓝色激光器301的出光侧设置的第一亮度传感器W1可以为蓝光亮度传感器。红色激光器302的出光侧设置的第一亮度传感器W1可以为红光亮度传感器。绿色激光器303的出光侧设置的第一亮度传感器W1可以为绿光亮度传感器。In addition, as shown in FIG. 3, the projection device may further include: a first brightness sensor W1 arranged on the light-emitting side of each laser, and the first brightness sensor W1 is used to detect the light-emitting brightness of a corresponding laser. The first brightness sensor W1 provided on the light emitting side of the blue laser 301 may be a blue brightness sensor. The first brightness sensor W1 provided on the light output side of the red laser 302 may be a red light brightness sensor. The first brightness sensor W1 provided on the light emitting side of the green laser 303 may be a green light brightness sensor.

或者，如图3所示，该投影设备还可以包括：设置在该光导管100的出光侧的一个第二亮度传感器W2，该第二亮度传感器W2可以为白光亮度传感器。Or, as shown in FIG. 3, the projection device may further include: a second brightness sensor W2 disposed on the light exit side of the light pipe 100, and the second brightness sensor W2 may be a white light brightness sensor.

又或者，该投影设备可以既包括第一亮度传感器W1，也包括第二亮度传感器W2。Alternatively, the projection device may include both the first brightness sensor W1 and the second brightness sensor W2.

步骤405、在投影显示每帧子图像的过程中，将对应子图像的振镜电流控制信号传输至振镜驱动组件。Step 405: In the process of projecting and displaying each frame of sub-image, the galvanometer current control signal corresponding to the sub-image is transmitted to the galvanometer driving component.

在本公开实施例中，在投影显示每帧子图像的过程中，显示控制组件10可以将对应一帧子图像的振镜电流控制信号传输至振镜驱动组件50，该振镜电流控制信号用于控制振镜驱动组件50向振镜60提供振镜驱动电流，以驱动该振镜60偏转。其中，该不同帧子图像对应的振镜电流控制信号不同，由此可以实现将多帧子图像投影至投影屏幕上的不同位置，进而实现该多帧子图像的叠加显示，进而即可实现在该投影屏幕上显示该目标图像。并且，在投影显示多帧子图像的过程中，该振镜驱动电流的电流方向可以交替变化，且该振镜驱动电流的变化波形可以为正弦波。In the embodiment of the present disclosure, in the process of projecting and displaying each frame of sub-image, the display control component 10 may transmit the galvanometer current control signal corresponding to one frame of sub-image to the galvanometer drive component 50, and the galvanometer current control signal is used for The galvanometer drive assembly 50 is controlled to provide a galvanometer drive current to the galvanometer 60 to drive the galvanometer 60 to deflect. Among them, the galvanometer current control signals corresponding to the different frames of sub-images are different, so that multiple frames of sub-images can be projected to different positions on the projection screen, and then the multi-frame sub-images can be superimposed and displayed, which can then be realized in The target image is displayed on the projection screen. In addition, in the process of projecting and displaying multiple frames of sub-images, the current direction of the galvanometer driving current may be alternately changed, and the changing waveform of the galvanometer driving current may be a sine wave.

在本公开实施例中，该振镜驱动电流用于驱动振镜60以第一轴和第二轴中的至少一个为旋转轴偏转，该第一轴与第二轴相交。可选的，该第一轴和第二轴可以垂直。该振镜60可以为四边形，该第一轴可以平行于该振镜60的一边，该第二轴可以平行于振镜60的另一边。例如，该振镜60可以为矩形，该第一轴和第二轴可以垂直。In the embodiment of the present disclosure, the galvanometer drive current is used to drive the galvanometer 60 to deflect with at least one of the first axis and the second axis as the rotation axis, and the first axis and the second axis intersect. Optionally, the first axis and the second axis may be perpendicular. The galvanometer 60 may be quadrilateral, the first axis may be parallel to one side of the galvanometer 60, and the second axis may be parallel to the other side of the galvanometer 60. For example, the galvanometer 60 may be rectangular, and the first axis and the second axis may be perpendicular.

该振镜60可以包括层叠设置的电路板和光学镜面，该电路板可以包括第一线圈组和第二线圈组，该第一线圈组中的两个线圈相对设置在第一轴的两侧，第二线圈组中的两个线圈相对设置在第二轴的两侧。该振镜电流控制信号用于控制振镜驱动组件50向第一线圈组提供振镜驱动电流，以驱动光学镜面以第一轴为旋转轴偏转；和/或，该振镜电流控制信号用于控制振镜驱动组件50向第二线圈组提供振镜驱动电流，以驱动光学镜面以第二轴为旋转轴偏转。即该光学镜面可以以第一轴为旋转轴偏转，或者，该光学镜面可以以第二轴为旋转轴偏转，或者该光学镜面可以同时以第一轴为旋转轴和第二轴为旋转轴偏转。The galvanometer 60 may include a circuit board and an optical mirror that are stacked, and the circuit board may include a first coil group and a second coil group. The two coils in the first coil group are arranged on opposite sides of the first axis. The two coils in the second coil group are oppositely arranged on both sides of the second shaft. The galvanometer current control signal is used to control the galvanometer drive assembly 50 to provide the galvanometer drive current to the first coil group to drive the optical mirror surface to deflect with the first axis as the rotation axis; and/or, the galvanometer current control signal is used for The galvanometer drive assembly 50 is controlled to provide a galvanometer drive current to the second coil group to drive the optical mirror to deflect with the second axis as the rotation axis. That is, the optical mirror can be deflected with the first axis as the rotation axis, or the optical mirror can be deflected with the second axis as the rotation axis, or the optical mirror can be deflected with the first axis as the rotation axis and the second axis as the rotation axis at the same time .

在投影显示每帧子图像的过程中，光阀40时序性的接收三基色光的照射，且在光阀40接收到三基色光中目标基色光的照射时，显示控制组件10可以将对应子图像的振镜电流控制信号传输至振镜驱动组件50，该振镜电流控制信号用于控制振镜驱动组件向振镜提供振镜驱动电流，以驱动振镜60偏转，之后振镜60保持不变，由此完成一帧子图像的显示。之后在显示下一帧子图像时显示控制组件10和振镜驱动组件50可以再次驱动振镜60偏转，依次类推，从而实现将不同帧子图像投影显示至投影屏幕的不同位置处。In the process of projecting and displaying each frame of sub-images, the light valve 40 receives the illumination of the three primary colors sequentially, and when the light valve 40 receives the illumination of the target primary color light among the three primary colors, the display control component 10 can set the corresponding sub-images The galvanometer current control signal of the image is transmitted to the galvanometer drive assembly 50, and the galvanometer current control signal is used to control the galvanometer drive assembly to provide the galvanometer drive current to the galvanometer to drive the galvanometer 60 to deflect, and then the galvanometer 60 remains inactive. Change, thereby completing the display of one frame of sub-images. Later, when displaying the next frame of sub-images, the display control component 10 and the galvanometer driving component 50 can drive the galvanometer 60 to deflect again, and so on, so as to realize the projected display of the sub-images of different frames to different positions on the projection screen.

其中，该目标基色光可以为蓝色基色光。由于人眼对蓝色不敏感，因此在光阀40接收到三基色光中蓝色基色光的照射时，驱动振镜60翻转，人眼并不会明显的看到图像的偏移，确保了图像的显示效果。Wherein, the target primary color light may be blue primary color light. Since the human eye is not sensitive to blue, when the light valve 40 receives the blue primary color light from the three primary colors, the galvanometer 60 is driven to flip, and the human eye will not see the image shift obviously, ensuring The display effect of the image.

可选的，在投影显示第一帧子图像的过程中，光阀40时序性的接收三基色光的照射，且在光阀40接收到三基色光中目标基色光的照射时，该显示控制组件10可以将第一振镜电流控制信号传输至振镜驱动组件50。该第一振镜电流控制信号用于控制振镜驱动组件50驱动振镜60以第一轴为旋转轴沿第一方向偏转第一角度，并驱动振镜60以第二轴为旋转轴沿第三方向偏转第一角度。或者，该第一振镜电流控制信号用于控制振镜驱动组件50驱动振镜60以第一轴为旋转轴沿第一方向偏转第二角度。Optionally, in the process of projecting and displaying the first frame of sub-images, the light valve 40 receives the illumination of the three primary colors sequentially, and when the light valve 40 receives the illumination of the target primary color light among the three primary colors, the display control The assembly 10 can transmit the first galvanometer current control signal to the galvanometer driving assembly 50. The first galvanometer current control signal is used to control the galvanometer drive assembly 50 to drive the galvanometer 60 to use the first axis as the rotation axis to deflect the first angle in the first direction, and to drive the galvanometer 60 to use the second axis as the rotation axis along the first angle. The first angle is deflected in three directions. Alternatively, the first galvanometer current control signal is used to control the galvanometer drive assembly 50 to drive the galvanometer 60 to deflect the second angle in the first direction with the first axis as the rotation axis.

在投影显示第二帧子图像的过程中，光阀40时序性的接收三基色光的照射，且在光阀40接收到三基色光中目标基色光的照射时，该显示控制组件10可以将第二振镜电流控制信号传输至振镜驱动组件50。该第二振镜电流控制信号用于控制振镜驱动组件50驱动振镜60以第二轴为旋转轴沿第四方向偏转第二角度。In the process of projecting and displaying the second frame of sub-images, the light valve 40 receives the illumination of the three primary colors sequentially, and when the light valve 40 receives the illumination of the target primary color light among the three primary colors, the display control component 10 can The second galvanometer current control signal is transmitted to the galvanometer driving assembly 50. The second galvanometer current control signal is used to control the galvanometer drive assembly 50 to drive the galvanometer 60 to deflect the second angle in the fourth direction with the second axis as the rotation axis.

在投影显示第三帧子图像的过程中，光阀40时序性的接收三基色光的照射，且在光阀40接收到三基色光中目标基色光的照射时，该显示控制组件10可以将第三振镜电流控制信号传输至振镜驱动组件50。该第三振镜电流控制信号用于控制振镜驱动组件50驱动振镜60以第一轴为旋转轴沿第二方向偏转第二角度。In the process of projecting and displaying the third frame of sub-image, the light valve 40 receives the light of the three primary colors sequentially, and when the light valve 40 receives the light of the target primary color among the three primary colors, the display control component 10 can The third galvanometer current control signal is transmitted to the galvanometer driving assembly 50. The third galvanometer current control signal is used to control the galvanometer drive assembly 50 to drive the galvanometer 60 to deflect the second angle in the second direction with the first axis as the rotation axis.

当投影显示第四帧子图像时，光阀40时序性的接收三基色光的照射，且在光阀40接收到三基色光中目标基色光的照射时，该显示控制组件10可以将第四振镜电流控制信号传输至振镜驱动组件50。该第四振镜电流控制信号用于控制振镜驱动组件50驱动振镜60以第二轴为旋转轴沿第三方向偏转第二角度。When the fourth frame of sub-image is projected and displayed, the light valve 40 sequentially receives the illumination of the three primary colors, and when the light valve 40 receives the illumination of the target primary color light among the three primary colors, the display control component 10 can set the fourth The galvanometer current control signal is transmitted to the galvanometer drive assembly 50. The fourth galvanometer current control signal is used to control the galvanometer drive assembly 50 to drive the galvanometer 60 to deflect the second angle in the third direction with the second axis as the rotation axis.

其中，该第一方向与第二方向相反，该第三方向与第四方向相反。示例的，该第一方向和第三方向可以均为顺时针方向。该第二方向和第四方向可以均为逆时针方向。该第二角度等于两倍的第一角度。Wherein, the first direction is opposite to the second direction, and the third direction is opposite to the fourth direction. For example, the first direction and the third direction may both be clockwise directions. The second direction and the fourth direction may both be counterclockwise. The second angle is equal to twice the first angle.

示例的，假设第一方向和第三方向为顺时针方向，第二方向和第四方向为逆时针方向，则如图5所示，可以以第二轴Y为横轴，以第三轴Z为纵轴建立第一坐标系，并可以以第三轴Z为横轴，以第一轴X为纵轴，建立第二坐标系。其中，该第三轴Z分别垂直于该第一轴X和第二轴Y。参考图5中的(一)和(二)，若振镜驱动组件50未向振镜60提供振镜驱动电流，该振镜60处于原始位置。此时，振镜60与入射光线垂直，即光线沿平行于第三轴Z的方向垂直入射至振镜60。图5中的(三)是投影屏幕的第三坐标系，该第三坐标系的横轴为X1，纵轴为Y1。在振镜60处于原始位置时，该第一帧子图像中的中心点像素可以位于该第三坐标系的原点o处。For example, assuming that the first direction and the third direction are clockwise, and the second and fourth directions are counterclockwise, then as shown in Figure 5, the second axis Y can be the horizontal axis, and the third axis Z A first coordinate system is established for the vertical axis, and a second coordinate system can be established by taking the third axis Z as the horizontal axis and the first axis X as the vertical axis. Wherein, the third axis Z is perpendicular to the first axis X and the second axis Y respectively. Referring to (1) and (2) in FIG. 5, if the galvanometer drive assembly 50 does not provide the galvanometer drive current to the galvanometer 60, the galvanometer 60 is in the original position. At this time, the galvanometer 60 is perpendicular to the incident light, that is, the light is perpendicularly incident to the galvanometer 60 in a direction parallel to the third axis Z. (3) in FIG. 5 is the third coordinate system of the projection screen, the horizontal axis of the third coordinate system is X1, and the vertical axis is Y1. When the galvanometer 60 is at the original position, the center point pixel in the first frame of sub-image may be located at the origin o of the third coordinate system.

需要说明的是，图5中所示的振镜60为振镜60的侧视图，即振镜60的侧面，该侧面垂直于振镜60的入光面。It should be noted that the galvanometer 60 shown in FIG. 5 is a side view of the galvanometer 60, that is, the side surface of the galvanometer 60, which is perpendicular to the light incident surface of the galvanometer 60.

参考图6，在投影显示第一帧子图像A的过程中，光阀40时序性的接收三基色光的照射，且在光阀40接收到三基色光中蓝色基色光的照射时，该显示控制组件10可以将第一振镜电流控制信号传输至振镜驱动组件50，该振镜驱动组件50分别向该振镜60中的第一线圈组和第二线圈组提供第一振镜驱动电流。参考图6中的(一)和(二)，该振镜60可以在该第一振镜驱动电流的驱动下，以第一轴X为旋转轴沿第一方向F1(即顺时针方向)偏转第一角度θ1，并以第二轴Y为旋转轴沿第三方向F3(即顺时针方向)偏转第一角度θ1。由此可以实现第一帧子图像A中的中心点像素在X1轴的负方向上偏移距离d1，第一帧子图像A中的中心点像素在Y1轴的负方向上偏移距离d1。参考图6中的(二)，最终该第一子帧图像A中的中心点像素在第三坐标系的坐标为(-d1，-d1)，即第一子帧图像A中的中心点像素位于第三坐标系的a位置处。Referring to FIG. 6, in the process of projecting and displaying the first frame of sub-image A, the light valve 40 sequentially receives the illumination of the three primary colors, and when the light valve 40 receives the illumination of the blue primary color of the three primary colors, the The display control assembly 10 can transmit the first galvanometer current control signal to the galvanometer drive assembly 50, and the galvanometer drive assembly 50 provides the first galvanometer drive to the first coil group and the second coil group in the galvanometer 60, respectively. Current. Referring to (1) and (2) in FIG. 6, the galvanometer 60 can be driven by the first galvanometer drive current to deflect along the first direction F1 (ie, clockwise) with the first axis X as the rotation axis. The first angle θ1, and the second axis Y is used as the rotation axis to deflect the first angle θ1 along the third direction F3 (ie, the clockwise direction). In this way, the center point pixel in the first frame of sub-image A can be offset by a distance d1 in the negative direction of the X1 axis, and the center point pixel in the first frame of the sub-image A can be offset by a distance d1 in the negative direction of the Y1 axis. Referring to (2) in Figure 6, the final coordinate of the center point pixel in the first sub-frame image A in the third coordinate system is (-d1, -d1), that is, the center point pixel in the first sub-frame image A Located at the a position of the third coordinate system.

图7示出了振镜以不同的轴为旋转轴偏转过程中振镜的偏转位置的示意图。该示意图中包括第一曲线和第二曲线，该第一曲线表示的是振镜以第一轴X为旋转轴偏转的过程中振镜相对于初始位置偏转的距离。第二曲线表示的是振镜以第二轴Y为旋转轴偏转的过程中振镜相对于初始位置偏转的距离。该每个曲线的横轴为时间t，纵轴为振镜的偏移距离s。FIG. 7 shows a schematic diagram of the deflection position of the galvanometer during the deflection process of the galvanometer with different axes as the rotation axis. The schematic diagram includes a first curve and a second curve, and the first curve represents the distance that the galvanometer deflects relative to the initial position during the deflection of the galvanometer with the first axis X as the rotation axis. The second curve represents the distance that the galvanometer deflects relative to the initial position during the deflection of the galvanometer with the second axis Y as the rotation axis. The horizontal axis of each curve is time t, and the vertical axis is the offset distance s of the galvanometer.

参考图7，在投影显示第一帧子图像A的过程中，该振镜60以第一轴X为旋转轴从初始位置偏移至第二轴Y的负方向，以第二轴Y为旋转轴从初始位置偏转至第一轴X的负方向。之后，在光阀40依次接收到三基色光中的绿色基色光和红色基色光时，该振镜60保持不变，即振镜60不再偏转直至该第一帧子图像A显示完成。Referring to FIG. 7, in the process of projecting and displaying the sub-image A of the first frame, the galvanometer 60 is shifted from the initial position to the negative direction of the second axis Y with the first axis X as the rotation axis, and the second axis Y is the rotation axis. The axis is deflected from the initial position to the negative direction of the first axis X. After that, when the light valve 40 sequentially receives the green primary color light and the red primary color light among the three primary colors, the galvanometer 60 remains unchanged, that is, the galvanometer 60 does not deflect until the first frame of sub-image A is displayed.

图9是本公开实施例提供的一种驱动振镜沿第二轴偏转的振镜驱动电流的波形图。该波形图的横轴为时间t，纵轴为驱动电流I的大小。当振镜驱动电流由正数变为负数，或者该振镜驱动电流由负数变为正数时，表明振镜驱动电流的方向发生变化。参考图7、图8和图9，在投影显示第二帧子图像B的过程中，光阀40时序性的接收三基色光的照射，且在光阀40接收到三基色光中蓝色基色光的照射时，该显示控制组件10可以将第二振镜电流控制信号传输至振镜驱动组件50，该振镜驱动组件50向该振镜60中用于驱动振镜以第二轴为旋转轴转动的第一线圈组提供第二振镜驱动电流。该第二振镜驱动电流的波形可以参考图9所示的电流波形图中的t1段和t2段，该t1段的电流用于驱动振镜60以第二轴Y为旋转轴由第一轴X的负方向偏转至第一轴X的正方向，该t2段用于控制振镜60保持不变。Fig. 9 is a waveform diagram of a galvanometer driving current for driving a galvanometer to deflect along a second axis according to an embodiment of the present disclosure. The horizontal axis of the waveform diagram is time t, and the vertical axis is the magnitude of the drive current I. When the galvanometer drive current changes from a positive number to a negative number, or the galvanometer drive current changes from a negative number to a positive number, it indicates that the direction of the galvanometer drive current has changed. Referring to Figures 7, 8 and 9, during the process of projecting and displaying the second frame of sub-image B, the light valve 40 receives the light of the three primary colors sequentially, and the light valve 40 receives the blue primary color of the three primary colors. When light is irradiated, the display control assembly 10 can transmit the second galvanometer current control signal to the galvanometer drive assembly 50, and the galvanometer drive assembly 50 is used to drive the galvanometer to rotate on the second axis to the galvanometer 60 The shaft-rotating first coil group provides the second galvanometer drive current. The waveform of the second galvanometer drive current can refer to the t1 and t2 segments in the current waveform diagram shown in FIG. The negative direction of X is deflected to the positive direction of the first axis X, and the t2 section is used to control the galvanometer 60 to remain unchanged.

在该第二振镜驱动电流为t1段时，参考图8中的(一)，该振镜60在该第二振镜驱动电流的驱动下以第二轴Y为旋转轴沿第四方向F4(即逆时针方向)偏转第二角度θ2，该θ2＝2×θ1。由此实现，第二帧子图像B的中心点像素沿Y1轴的负方向偏移距离d2至Y1的正方向，该第二帧子图像B中的中心点像素在X1轴的负方向的偏移距离d1保持不变，该d2＝2×d1。参考图8中的(二)，最终该第二子帧图像中的中心点像素在第三坐标系的坐标为(-d1，d1)，即第二子帧图像B中的中心点像素位于第三坐标系的b位置处。参考图7，光阀40时序性的接收三基色光的照射，且在光阀40接收到三基色光中蓝色基色光的照射时，该振镜60以第二轴Y为旋转轴由第一轴X的负方向偏转至第一轴X的正方向，并且不会以第一轴X为旋转轴旋转，即振镜60在第二轴Y的负方向上保持不变。之后，在光阀40依次接收到三基色光中的绿色基色光和红色基色光时，该第二振镜驱动电流为t2段，此时该振镜60保持不变，即振镜60不再偏转直至该第二帧子图像B显示完成。When the second galvanometer drive current is t1, referring to (1) in FIG. 8, the galvanometer 60 is driven by the second galvanometer drive current with the second axis Y as the rotation axis along the fourth direction F4. (I.e., in the counterclockwise direction) deflect the second angle θ2, which is θ2=2×θ1. In this way, the central point pixel of the second frame of sub-image B is offset along the negative direction of the Y1 axis by a distance d2 to the positive direction of Y1, and the central point pixel in the second frame of sub-image B is offset in the negative direction of the X1 axis. The moving distance d1 remains unchanged, and the d2=2×d1. Referring to (2) in Figure 8, finally the coordinates of the center point pixel in the second sub-frame image in the third coordinate system are (-d1, d1), that is, the center point pixel in the second sub-frame image B is located at the first At position b in the three-coordinate system. Referring to FIG. 7, the light valve 40 receives the light of the three primary colors sequentially, and when the light valve 40 receives the light of the blue primary color of the three primary colors, the galvanometer 60 uses the second axis Y as the rotation axis from the first The negative direction of one axis X is deflected to the positive direction of the first axis X, and the first axis X is not used as the rotation axis, that is, the galvanometer 60 remains unchanged in the negative direction of the second axis Y. After that, when the light valve 40 sequentially receives the green primary color light and the red primary color light of the three primary colors, the second galvanometer drive current is t2, and the galvanometer 60 remains unchanged at this time, that is, the galvanometer 60 is no longer Deflection until the second frame of sub-image B is displayed.

参考图7和图10，在投影显示第三帧子图像C的过程中，光阀40时序性的接收三基色光的照射，且在光阀40接收到三基色光中蓝色基色光的照射时，该显示控制组件10可以将第三振镜电流控制信号传输至振镜驱动组件50，该振镜驱动组件50向该振镜60中用于驱动振镜以第一轴为旋转轴转动的第一线圈组提供第三振镜驱动电流。参考图10中的(一)，该振镜60在该第三振镜驱动电流的驱动下以第一轴X为旋转轴沿第二方向F2(逆时针方向)偏转第二角度θ2。由此实现，第三帧子图像C的中心点像素沿X1轴的负方向偏移距离d2至X1轴的正方向，该第三帧子图像C中的中心点像素在Y1轴的正方向的偏移距离d2保持不变。7 and 10, in the process of projecting and displaying the third frame of sub-image C, the light valve 40 receives the light of the three primary colors sequentially, and the light valve 40 receives the light of the blue primary color among the three primary colors. At this time, the display control assembly 10 can transmit the third galvanometer current control signal to the galvanometer drive assembly 50, and the galvanometer drive assembly 50 is used to drive the galvanometer to rotate with the first axis as the rotation axis. The first coil group provides the third galvanometer drive current. Referring to (1) in FIG. 10, the galvanometer 60 is driven by the third galvanometer drive current to deflect the second angle θ2 along the second direction F2 (counterclockwise) with the first axis X as the rotation axis. In this way, the center point pixel of the third frame of sub-image C is offset along the negative direction of the X1 axis by a distance d2 to the positive direction of the X1 axis. The offset distance d2 remains unchanged.

参考图10中的(二)，最终该第三子帧图像C的中心点像素在该第三坐标系的坐标为(d1，d1)，即第三子帧图像C的中心点像素位于第三坐标系的c位置处。参考图7，光阀40时序性的接收三基色光的照射，且在光阀40接收到三基色光中蓝色基色光的照射时，该振镜60以第一轴X为旋转轴由第二轴Y的负方向偏转至第二轴Y的正方向，并且不会以第二轴Y为旋转轴旋转，即振镜60在第一轴X的正方向上保持不变。之后，在光阀40依次接收到三基色光中的绿色基色光和红色基色光时，该振镜60保持不变，即振镜60不再偏转直至该第三帧子图像C显示完成。Referring to (2) in FIG. 10, the final coordinate of the center point pixel of the third sub-frame image C in the third coordinate system is (d1, d1), that is, the center point pixel of the third sub-frame image C is located in the third coordinate system. The position c of the coordinate system. Referring to FIG. 7, the light valve 40 receives the light of the three primary colors in a sequential manner, and when the light valve 40 receives the light of the blue primary color of the three primary colors, the galvanometer 60 takes the first axis X as the rotation axis and moves from the first axis to the first axis X as the rotation axis. The negative direction of the second axis Y is deflected to the positive direction of the second axis Y, and does not rotate with the second axis Y as the rotation axis, that is, the galvanometer 60 remains unchanged in the positive direction of the first axis X. After that, when the light valve 40 sequentially receives the green primary color light and the red primary color light among the three primary colors, the galvanometer 60 remains unchanged, that is, the galvanometer 60 does not deflect until the third frame of sub-image C is displayed.

参考图7、图9和图11，在投影显示第四帧子图像D的过程中，光阀40时序性的接收三基色光的照射，且在光阀40接收到三基色光中蓝色基色光的照射时，该显示控制组件10可以将第四振镜电流控制信号传输至振镜驱动组件50，该振镜驱动组件50向该振镜60中用于驱动振镜以第二轴为旋转轴转动的第二线圈组提供第四振镜驱动电流，该第四振镜驱动电流为图9所示的电流波形图中的t3段和t4段，该t3段的电流用于驱动振镜60以第二轴Y为旋转轴由第一轴X的正方向偏转至第一轴X的负方向，该t4段用于控制振镜60保持不变。Referring to FIGS. 7, 9 and 11, in the process of projecting and displaying the fourth frame of sub-image D, the light valve 40 sequentially receives the light of the three primary colors, and the light valve 40 receives the blue primary color of the three primary colors. When light is irradiated, the display control assembly 10 can transmit the fourth galvanometer current control signal to the galvanometer drive assembly 50, and the galvanometer drive assembly 50 is used to drive the galvanometer to rotate on the second axis to the galvanometer 60 The axis-rotating second coil group provides a fourth galvanometer drive current, the fourth galvanometer drive current is the t3 section and t4 section in the current waveform diagram shown in FIG. 9, and the t3 section current is used to drive the galvanometer 60 Taking the second axis Y as the rotation axis to deflect from the positive direction of the first axis X to the negative direction of the first axis X, the t4 segment is used to control the galvanometer 60 to remain unchanged.

在该第四振镜驱动电流为t3段时。参考图11中的(一)，该振镜60在该第四振镜驱动电流的驱动下以第二轴Y为旋转轴沿第三方向F3(即顺时针方向)偏转第二角度θ2。由此实现第四帧子图像D的中心点像素沿Y1轴的正方向偏移距离d2至Y1轴的负方向，该第四帧子图像D的中心点像素在X1轴的正方向的偏移距离d2保持不变。参考图11中的(二)，最终该第四帧子图像D的中心点像素在该第三坐标系的坐标为(d1，-d1)，即第四帧子图像D的中心点像素位于第三坐标系的d位置处。When the fourth galvanometer drive current is t3. Referring to (1) in FIG. 11, the galvanometer 60 is driven by the fourth galvanometer drive current to deflect a second angle θ2 along the third direction F3 (ie, clockwise direction) with the second axis Y as the rotation axis. As a result, the center point pixel of the fourth frame of sub-image D is offset along the positive direction of the Y1 axis by a distance d2 to the negative direction of the Y1 axis, and the center point pixel of the fourth frame of sub-image D is offset in the positive direction of the X1 axis The distance d2 remains unchanged. Referring to (2) in Figure 11, finally the coordinates of the center point pixel of the fourth frame of sub-image D in the third coordinate system are (d1, -d1), that is, the center point pixel of the fourth frame of sub-image D is located at the first At the d position of the three-coordinate system.

参考图7，光阀40时序性的接收三基色光的照射，且在光阀40接收到三基色光中蓝色基色光的照射时，该振镜60以第二轴Y为旋转轴由第一轴X的正方向偏转至第一轴X的负方向，并且不会以第一轴X为旋转轴旋转，即振镜60在第二轴Y的正方向上保持不变。之后，在光阀40依次接收到三基色光中的绿色基色光和红色基色光时，此时该第四振镜驱动电流为t4段时，该振镜60保持不变，即振镜60不再偏转直至该第四帧子图像D显示完成。由此实现在投影屏幕上叠加显示第一子帧图像A、第二子帧图像B、第三子帧图像C和第四子帧图像D，从而实现在低分辨率的投影设备上显示高分辨率的目标图像。Referring to FIG. 7, the light valve 40 receives the light of the three primary colors sequentially, and when the light valve 40 receives the light of the blue primary color of the three primary colors, the galvanometer 60 uses the second axis Y as the rotation axis from the first The positive direction of the one axis X is deflected to the negative direction of the first axis X, and the first axis X is not used as the rotation axis, that is, the galvanometer 60 remains unchanged in the positive direction of the second axis Y. After that, when the light valve 40 sequentially receives the green primary color light and the red primary color light of the three primary colors, when the fourth galvanometer drive current is t4, the galvanometer 60 remains unchanged, that is, the galvanometer 60 does not It is deflected again until the display of the fourth frame of sub-image D is completed. As a result, the first sub-frame image A, the second sub-frame image B, the third sub-frame image C, and the fourth sub-frame image D are superimposed and displayed on the projection screen, thereby achieving high-resolution display on a low-resolution projection device Rate the target image.

参考图7和图12，在投影显示下一帧目标图像的第一帧子图像A的过程中，光阀40时序性的接收三基色光的照射，且在光阀40接收到三基色光中蓝色基色光的照射时，该显示控制组件10可以将第一振镜电流控制信号传输至振镜驱动组件50，该振镜驱动组件50向该振镜60中用于驱动振镜以第一轴X为旋转轴转动的第一线圈组提供第一振镜驱动电流。参考图12，该振镜60在该第一振镜驱动电流的驱动下以第一轴X为旋转轴沿第一方向F1(即顺时针方向)偏转第二角度θ2。由此实现下一帧目标图像的第一帧子图像A的中心点像素沿X1轴由正方向偏移距离d2至X1轴的负方向，该下一帧目标图像的第一帧子图像A的中心点像素在Y1轴的负方向的偏移距离d2保持不变。最终该下一帧目标图像的第一帧子图像A的中心点像素在该第三坐标系的坐标为(-d1，-d1)，即下一帧目标图像的第一帧子图像A的中心点像素位于第三坐标系的a位置处。之后，在激光器照射至光阀40的光线的颜色依次变为绿色和红色时，该振镜60保持不变，即振镜60不再偏转直至该下一帧目标图像的第一帧子图像A显示完成，依次类推，在投影屏幕上显示多帧目标图像。7 and 12, in the process of projecting and displaying the first frame of sub-image A of the next frame of target image, the light valve 40 receives the light of the three primary colors in a sequential manner, and the light valve 40 receives the light of the three primary colors. When the blue primary color light is irradiated, the display control assembly 10 can transmit the first galvanometer current control signal to the galvanometer drive assembly 50, and the galvanometer drive assembly 50 is used to drive the galvanometer to the first galvanometer drive assembly 50. The axis X provides the first galvanometer drive current for the first coil group rotating by the rotating shaft. Referring to FIG. 12, the galvanometer 60 is driven by the first galvanometer drive current to deflect the second angle θ2 along the first direction F1 (ie, clockwise direction) with the first axis X as the rotation axis. In this way, the central point pixel of the first frame of sub-image A of the next frame of target image is offset along the X1 axis from the positive direction by a distance d2 to the negative direction of the X1 axis. The offset distance d2 of the center point pixel in the negative direction of the Y1 axis remains unchanged. Finally, the coordinates of the center point pixel of the first frame of sub-image A of the next frame of target image in the third coordinate system are (-d1, -d1), that is, the center of the first frame of sub-image A of the next frame of target image The point pixel is located at position a in the third coordinate system. After that, when the color of the light irradiated by the laser to the light valve 40 sequentially changes to green and red, the galvanometer 60 remains unchanged, that is, the galvanometer 60 does not deflect until the first sub-image A of the next frame of target image. The display is completed, and so on, and multiple frames of target images are displayed on the projection screen.

在本公开实施例中，该振镜驱动电流的波形可以为正弦波，相比于方波，该正弦波的谐波分量较少，在实现电磁驱动过程中所产生的噪声少，且所需的电磁转矩较小，可以降低线圈的发热。In the embodiment of the present disclosure, the waveform of the galvanometer drive current may be a sine wave. Compared with a square wave, the sine wave has fewer harmonic components, and generates less noise during the electromagnetic drive process, and requires less noise. The electromagnetic torque is small, which can reduce the heating of the coil.

在本公开实施例中，振镜驱动组件50通过向振镜60提供电流方向交替变化的振镜驱动电流，驱动振镜60以第一轴或第二轴为旋转轴在两个方向上偏转。该振镜驱动电流的幅值较小，因此振镜60以第一轴或者第二轴为旋转轴偏转时，在每个方向上偏转的幅度较小，振镜60中的承载板的变形量较小。该种驱动振镜的方法对承载板结构的要求较低，且降低了承载板的损坏率，延长了承载板的使用寿命，进而延长了振镜的使用寿命。In the embodiment of the present disclosure, the galvanometer drive assembly 50 provides the galvanometer drive current with alternating current directions to the galvanometer mirror 60 to drive the galvanometer mirror 60 to deflect in two directions with the first axis or the second axis as the rotation axis. The amplitude of the galvanometer drive current is small, so when the galvanometer 60 is deflected with the first axis or the second axis as the rotation axis, the amplitude of deflection in each direction is small, and the amount of deformation of the bearing plate in the galvanometer 60 Smaller. This method of driving the galvanometer has lower requirements on the structure of the bearing plate, and reduces the damage rate of the bearing plate, prolongs the service life of the bearing plate, and further extends the service life of the galvanometer.

需要说明的是，本公开实施例提供的投影显示方法步骤的先后顺序可以进行适当调整，例如，步骤404和步骤405可以同时执行。任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化的方法，都应涵盖在本公开的保护范围之内，因此不再赘述。It should be noted that the sequence of the steps of the projection display method provided by the embodiment of the present disclosure can be appropriately adjusted. For example, step 404 and step 405 can be performed at the same time. Any person skilled in the art can easily conceive of a change method within the technical scope disclosed in the present disclosure, which should be covered by the protection scope of the present disclosure, and therefore will not be repeated.

综上所述，本公开实施例提供了一种投影显示方法，该投影显示方法可以在投影显示每帧子图像的过程中，将对应子图像的振镜电流控制信号传输至振镜驱动组件，以使振镜驱动组件向振镜提供振镜驱动电流，驱动该振镜偏转。由于不同帧子图像对应的振镜电流控制信号不同，因此可以驱动振镜偏转至不同的位置，从而将该多帧子图像叠加显示至投影屏幕，在不损失目标图像的像素信息的情况下，实现在低分辨率的投影设备上显示该高分辨率的目标图像。相较于相关技术，本公开提供的投影显示方法确保了目标图像的显示效果。In summary, the embodiments of the present disclosure provide a projection display method, which can transmit the galvanometer current control signal corresponding to the sub-image to the galvanometer drive component during the process of projecting and displaying each frame of sub-image, So that the galvanometer drive assembly provides the galvanometer drive current to the galvanometer to drive the galvanometer to deflect. Since the galvanometer current control signals corresponding to different frames of sub-images are different, the galvanometer can be driven to deflect to different positions, so that the multi-frame sub-images are superimposed and displayed on the projection screen, without losing the pixel information of the target image, The high-resolution target image can be displayed on a low-resolution projection device. Compared with related technologies, the projection display method provided by the present disclosure ensures the display effect of the target image.

本申请实施例还提供了一种投影设备，参考图1、图2和图3，该投影设备可以包括显示控制组件10、至少一个激光器驱动组件20、光源30、光阀40、投影镜头120、振镜驱动组件50以及振镜60，该光源30可以包括与至少一个激光器驱动组件20一一对应的至少一组激光器，该振镜60位于光阀40和投影镜头120之间。The embodiment of the present application also provides a projection device. Referring to FIGS. 1, 2 and 3, the projection device may include a display control component 10, at least one laser driving component 20, a light source 30, a light valve 40, a projection lens 120, The galvanometer drive assembly 50 and the galvanometer 60. The light source 30 may include at least one group of lasers corresponding to at least one laser drive assembly 20, and the galvanometer lens 60 is located between the light valve 40 and the projection lens 120.

该显示控制组件10用于获取多帧子图像，该多帧子图像由待投影的目标图像分解得到，该目标图像的分辨率大于光阀的分辨率，该每帧子图像的分辨率不大于光阀的分辨率。The display control component 10 is used to obtain a multi-frame sub-image, the multi-frame sub-image is obtained by decomposing the target image to be projected, the resolution of the target image is greater than the resolution of the light valve, and the resolution of each sub-image is not greater than The resolution of the light valve.

该显示控制组件10与每个激光器驱动组件20连接，用于输出与每帧子图像的三种基色一一对应的至少一个使能信号，将至少一个使能信号分别传输至对应的激光器驱动组件20，以及，输出与每帧子图像的三种基色一一对应的至少一个激光电流控制信号，将至少一个激光电流控制信号分别传输至对应的激光器驱动组件20。The display control component 10 is connected to each laser driving component 20, and is used to output at least one enable signal corresponding to the three primary colors of each frame of sub-image, and transmit the at least one enable signal to the corresponding laser driving component respectively 20. And, output at least one laser current control signal corresponding to the three primary colors of each frame of sub-images one-to-one, and transmit the at least one laser current control signal to the corresponding laser driving component 20 respectively.

每个激光器驱动组件20与对应的一组激光器连接，用于响应于接收到的使能信号和激光电流控制信号，向其所连接的激光器提供对应的激光驱动电流。Each laser drive assembly 20 is connected to a corresponding group of lasers, and is used to provide a corresponding laser drive current to the laser connected to it in response to the received enable signal and laser current control signal.

每个激光器用于在对应的激光器驱动组件20提供的激光驱动电流的驱动下发出激光。Each laser is used to emit laser light under the driving of the laser driving current provided by the corresponding laser driving assembly 20.

显示控制组件10还用于在激光器发出的三基色光时序性的照射至光阀40的过程中，根据每帧子图像中像素的基色色阶值控制光阀40进行翻转，以将多帧子图像通过投影镜头依次投影至投影屏幕上。The display control component 10 is also used to control the light valve 40 to flip according to the primary color gradation value of the pixel in each frame of the sub-image during the sequential irradiation of the three primary colors light emitted by the laser to the light valve 40, so as to convert the multi-frame sub-images. The images are projected onto the projection screen in turn through the projection lens.

显示控制组件10还用于在投影显示每帧子图像的过程中，向振镜驱动组件传输对应子图像的振镜电流控制信号。The display control component 10 is also used for transmitting the galvano mirror current control signal corresponding to the sub-image to the galvano mirror driving component in the process of projecting and displaying each frame of the sub-image.

振镜驱动组件50用于在振镜电流控制信号的控制下向振镜60提供振镜驱动电流，以驱动振镜60偏转。其中，该不同帧子图像对应的振镜电流控制信号不同，并且，在投影显示多帧子图像的过程中，该振镜驱动电流的电流方向交替变化。The galvanometer drive assembly 50 is used to provide the galvanometer drive current to the galvanometer 60 under the control of the galvanometer current control signal to drive the galvanometer 60 to deflect. Wherein, the galvano mirror current control signals corresponding to the sub-images of different frames are different, and during the process of projecting and displaying multiple frames of sub-images, the current direction of the galvano mirror driving current changes alternately.

综上所述，本公开实施例提供了一种投影设备，该投影设备可以在投影显示每帧子图像的过程中，将对应子图像的振镜电流控制信号传输至振镜驱动组件，以使振镜驱动组件向振镜提供振镜驱动电流，驱动该振镜偏转。由于不同帧子图像对应的振镜电流控制信号不同，因此可以驱动振镜偏转至不同的位置，从而将该多帧子图像叠加显示至投影屏幕上，在不损失目标图像的像素信息的情况下，实现在低分辨率的投影设备上显示该高分辨率的目标图像。相较于相关技术，本公开提供的投影设备确保了目标图像的显示效果。In summary, the embodiments of the present disclosure provide a projection device that can transmit the galvanometer current control signal corresponding to the sub-image to the galvanometer drive assembly during the process of projecting and displaying each frame of sub-images, so that The galvanometer drive component provides the galvanometer drive current to the galvanometer to drive the galvanometer to deflect. Since the galvanometer current control signals corresponding to different frames of sub-images are different, the galvanometer can be driven to deflect to different positions, so that the multi-frame sub-images can be superimposed and displayed on the projection screen without losing the pixel information of the target image. , To display the high-resolution target image on a low-resolution projection device. Compared with related technologies, the projection device provided by the present disclosure ensures the display effect of the target image.

在本公开实施例中，参考图13，该振镜60可以包括层叠设置的电路板61和光学镜面62。参考图14，该电路板61可以包括基板610以及多个线圈组611。例如，图14中示出了两个线圈组611。该基板610具有第一镂空区域L0和围绕第一镂空区域L0的第一边缘区域L1，该多个线圈组611位于该第一边缘区域L1，振镜驱动组件50用于向每个线圈组611提供振镜驱动电流，以驱动光学镜面62偏转。该第一镂空区域L0为经过TIR透镜110全反射后的光线穿过的区域。In the embodiment of the present disclosure, referring to FIG. 13, the galvanometer 60 may include a circuit board 61 and an optical mirror 62 that are stacked. Referring to FIG. 14, the circuit board 61 may include a substrate 610 and a plurality of coil groups 611. For example, two coil groups 611 are shown in FIG. 14. The substrate 610 has a first hollow area L0 and a first edge area L1 surrounding the first hollow area L0. The plurality of coil groups 611 are located in the first edge area L1. The galvanometer drive current is provided to drive the optical mirror 62 to deflect. The first hollow area L0 is an area through which the light after being totally reflected by the TIR lens 110 passes.

可选的，该基板610可以为印刷电路板(printed circuit board，PCB)，该基板610的平面度的精度可以为0.1毫米(mm)，该基板610的平面度的精度完全符合振镜对固定支撑板的平面度的精度的要求，因此该基板610可以直接作为振镜的支撑板，而不需要为该振镜额外增加支撑板，由此简化了振镜整体结构，降低了制造成本。该每个线圈组可以包括一个或多个线圈，每个线圈的匝数可以为n0匝，该n0为大于0的正整数。并且，每个线圈的匝数、导线直径、布线形状以及布线层数可以根据实际需求设计。Optionally, the substrate 610 may be a printed circuit board (PCB), the accuracy of the flatness of the substrate 610 may be 0.1 millimeter (mm), and the accuracy of the flatness of the substrate 610 is completely consistent with the galvanometer pair fixing The accuracy of the flatness of the support plate is required, so the substrate 610 can be directly used as the support plate of the galvanometer without adding an additional support plate for the galvanometer, which simplifies the overall structure of the galvanometer and reduces the manufacturing cost. Each coil group may include one or more coils, and the number of turns of each coil may be n0 turns, where n0 is a positive integer greater than zero. In addition, the number of turns, wire diameter, wiring shape, and wiring layer number of each coil can be designed according to actual needs.

参考图15，该光学镜面62可以包括承载板620、位于承载板620靠近电路板61的一侧的光学玻璃621和多个磁性组件622，该每个磁性组件622与一个线圈组611对应。例如，图15中示出了与图14中的两个线圈组611对应的两个磁性组件622。其中，每个线圈组611用于在驱动电流的驱动下，与磁性组件622相互作用，以驱动光学玻璃621沿一个旋转轴转动，且不同的线圈组611所对应的旋转轴相交。可选的，该承载板620的材料可以为金属材料。该多个磁性组件622靠近承载板的一端的极性可以均为同一极性，相应的，该多个磁性组件622远离承载板的一端的极性也均为同一极性。例如，若该多个磁性组件622靠近承载板的一端的极性均为N极，则该多个磁性组件622远离承载板的一端的极性均为S极。若该多个磁性组件622靠近承载板的一端的极性均为S极，则该多个磁性组件622远离承载板的一端的极性均为N极。Referring to FIG. 15, the optical mirror surface 62 may include a carrier plate 620, an optical glass 621 located on a side of the carrier plate 620 close to the circuit board 61, and a plurality of magnetic components 622, and each magnetic component 622 corresponds to a coil group 611. For example, FIG. 15 shows two magnetic components 622 corresponding to the two coil sets 611 in FIG. 14. Wherein, each coil group 611 is used to interact with the magnetic component 622 under the drive of a driving current to drive the optical glass 621 to rotate along a rotation axis, and the rotation axes corresponding to different coil groups 611 intersect. Optionally, the material of the carrying plate 620 may be a metal material. The polarities of the ends of the plurality of magnetic components 622 close to the carrying plate may all be the same polarity. Correspondingly, the polarities of the ends of the plurality of magnetic components 622 away from the carrying plate are also the same polarity. For example, if the polarities of the ends of the plurality of magnetic components 622 close to the carrying plate are all N poles, the polarities of the ends of the plurality of magnetic components 622 far away from the carrying plate are all S poles. If the polarities of the ends of the plurality of magnetic components 622 close to the carrying plate are all S poles, the polarities of the ends of the plurality of magnetic components 622 far away from the carrying plate are all N poles.

其中，该承载板620具有第二镂空区域L2和围绕第二镂空区域L2的第二边缘区域L3。该光学玻璃621覆盖第二镂空区域L2，该多个磁性组件622位于第二边缘区域L3，且该光学玻璃621在基板610上的正投影以及该第二镂空区域L2在基板610上的正投影均与第一镂空区域L0重叠，该每个线圈组611与对应的一个磁性组件622在基板610上的正投影重叠。可选的，该光学玻璃621在基板610上的正投影的中心点以及该第二镂空区域L2在基板610上的正投影的中心点均与第一镂空区域L0的中心点重叠。该第一镂空区域L0和第二镂空区域L1可以称为通光孔径。Wherein, the carrying board 620 has a second hollow area L2 and a second edge area L3 surrounding the second hollow area L2. The optical glass 621 covers the second hollow area L2, the plurality of magnetic components 622 are located in the second edge area L3, and the orthographic projection of the optical glass 621 on the substrate 610 and the orthographic projection of the second hollow area L2 on the substrate 610 Both overlap with the first hollow area L0, and each coil group 611 overlaps with the orthographic projection of a corresponding magnetic component 622 on the substrate 610. Optionally, the center point of the orthographic projection of the optical glass 621 on the substrate 610 and the center point of the orthographic projection of the second hollow area L2 on the substrate 610 both overlap with the center point of the first hollow area L0. The first hollowed-out area L0 and the second hollowed-out area L1 may be referred to as clear apertures.

可选的，参考图15，该光学玻璃621的形状中心对称，例如，该光学玻璃621可以为正方形，该旋转轴可以为第一轴X，或者第二轴Y。该第一轴X平行于该光学玻璃621的一边，该第二轴Y平行于该光学玻璃621的另一边。该第一轴X和第二轴Y可以垂直。可选的，该光学玻璃621还可以为圆形或者矩形。Optionally, referring to FIG. 15, the shape of the optical glass 621 is symmetrical. For example, the optical glass 621 may be a square, and the rotation axis may be the first axis X or the second axis Y. The first axis X is parallel to one side of the optical glass 621, and the second axis Y is parallel to the other side of the optical glass 621. The first axis X and the second axis Y may be perpendicular. Optionally, the optical glass 621 may also be circular or rectangular.

示例的，该光学玻璃621的透射率大于或者等于98％，且该光学玻璃621的厚度的范围可以为(2.05mm，1.95mm)，对于波长为590纳米(nm)的光线，该光学玻璃621的折射率可以为1.523。For example, the transmittance of the optical glass 621 is greater than or equal to 98%, and the thickness of the optical glass 621 may be in the range of (2.05 mm, 1.95 mm). For light with a wavelength of 590 nanometers (nm), the optical glass 621 The refractive index can be 1.523.

可选的，参考图14，该每个线圈组611可以包括第一线圈和第二线圈，该第一线圈的一端与正极连接，该第一线圈的另一端与第二线圈的一端连接，该第二线圈的另一端与负极连接。参考图15，该每个磁性组件622可以包括第一磁性组件6220和第二磁性组件6221。Optionally, referring to FIG. 14, each coil group 611 may include a first coil and a second coil, one end of the first coil is connected to the anode, and the other end of the first coil is connected to one end of the second coil. The other end of the second coil is connected to the negative electrode. Referring to FIG. 15, each magnetic component 622 may include a first magnetic component 6220 and a second magnetic component 6221.

参考图14和图15，该第一线圈围绕第一中心区域R1设置，该第一中心区域R1与该第一磁性组件6220在基板610上的正投影重叠。该第二线圈围绕第二中心区域R2设置，该第二中心区域R2与该第二磁性组件6221在基板610上的正投影重叠。Referring to FIGS. 14 and 15, the first coil is arranged around a first central region R1, and the first central region R1 overlaps with the orthographic projection of the first magnetic component 6220 on the substrate 610. The second coil is arranged around a second central area R2, and the second central area R2 overlaps with the orthographic projection of the second magnetic component 6221 on the substrate 610.

示例的，该第一磁性组件6220和第二次磁性组件6221可以均为条形磁性组件。相应的，第一中心区域R1和第二中心区域R2可以为条形区域。For example, the first magnetic component 6220 and the second magnetic component 6221 may both be strip-shaped magnetic components. Correspondingly, the first central area R1 and the second central area R2 may be strip-shaped areas.

参考图14和图15，该第一镂空区域L0和第二镂空区域L2可以均为中心对称区域，例如可以均为正方形，该多个线圈组622可以包括第一线圈组和第二线圈组，该光学镜面62可以包括两个磁性组件622。其中，该每个线圈组611中的第一线圈和第二线圈均相对设置在第一镂空区域L0的两侧，且不同线圈组611中的线圈位于第一镂空区域L0的不同侧。可选的，该第一镂空区域L0和第二镂空区域L2也可以均为矩形或者圆形。该第一镂空区域L0、第二镂空区域L2以及光学玻璃621的形状相同。可选的，第一轴和第二轴可以为第一镂空区域的轴线，即该第一线圈组中的两个线圈相对设置在第一轴的两侧，该第二线圈组中的两个线圈相对设置在该第二轴的两侧。14 and 15, the first hollowed-out area L0 and the second hollowed-out area L2 may both be centrally symmetrical areas, for example, both may be square. The plurality of coil groups 622 may include a first coil group and a second coil group. The optical mirror 62 may include two magnetic components 622. Wherein, the first coil and the second coil in each coil group 611 are oppositely arranged on two sides of the first hollowed-out area L0, and the coils in different coil groups 611 are located on different sides of the first hollowed-out area L0. Optionally, the first hollowed-out area L0 and the second hollowed-out area L2 may both be rectangular or circular. The shapes of the first hollowed-out area L0, the second hollowed-out area L2 and the optical glass 621 are the same. Optionally, the first axis and the second axis may be the axis of the first hollow area, that is, the two coils in the first coil group are arranged on both sides of the first axis, and the two coils in the second coil group The coils are oppositely arranged on both sides of the second shaft.

示例的，参考图14，该基板610上的第一线圈组622中每个线圈所围绕的中心区域均与第一轴X平行。例如，该第一线圈组622包括第一线圈C0和第二线圈C1，该第一线圈C0和第二线圈C1相对设置在第一镂空区域L0的长边的两侧。其中，该第一线圈C0的一端与正极AX+连接，该第一线圈C0的另一端与和该第二线圈C1的一端连接，该第二线圈C1的另一端与负极AX-连接，该第一线圈C0和第二线圈C1可以串联组成一个电流通道。For example, referring to FIG. 14, the central area surrounded by each coil in the first coil group 622 on the substrate 610 is parallel to the first axis X. For example, the first coil group 622 includes a first coil C0 and a second coil C1, and the first coil C0 and the second coil C1 are oppositely arranged on both sides of the long side of the first hollow area L0. Wherein, one end of the first coil C0 is connected to the positive pole AX+, the other end of the first coil C0 is connected to one end of the second coil C1, the other end of the second coil C1 is connected to the negative pole AX-, and the first coil C0 is connected to the negative pole AX-. The coil C0 and the second coil C1 can be connected in series to form a current channel.

该基板610上的第二线圈组622中每个线圈所围绕的中心区域均与第二轴Y平行。例如，该第二线圈组622包括第一线圈B0和第二线圈B1，该第一线圈B0和第二线圈B1相对设置在第一镂空区域L0的短边的两侧。其中，该第一线圈B0的一端与正极AY+连接，该第一线圈B0的另一端与和该第二线圈B1的一端连接，该第二线圈B1的另一端与负极AY-连接，该第一线圈B0和第二线圈B1可以串联组成另一个电流通道。The central area surrounded by each coil in the second coil group 622 on the substrate 610 is parallel to the second axis Y. For example, the second coil group 622 includes a first coil B0 and a second coil B1, and the first coil B0 and the second coil B1 are oppositely arranged on both sides of the short side of the first hollow area L0. Wherein, one end of the first coil B0 is connected to the positive pole AY+, the other end of the first coil B0 is connected to one end of the second coil B1, and the other end of the second coil B1 is connected to the negative pole AY-, the first The coil B0 and the second coil B1 can be connected in series to form another current channel.

可选的，该基板610可以包括第一子基板和第二子基板，该每层子基板上均设置有第一线圈组和第二线圈组，该不同层的子基板上的线圈可以通过过孔连接。位于该第一子基板中的第一线圈的一端与正极连接，位于该第一子基板中的第一线圈的另一端可以通过第一过孔与位于第二子基板上的第一线圈的一端连接。位于位于第二子基板上的第一线圈的另一端与位于第二子基板上的第二线圈的一端连接，位于第二子基板上的第二线圈的另一端可以通过第二过孔与位于第一子基板上的第二线圈的一端连接，位于第一子基板上的第二线圈的另一端与负极连接。Optionally, the substrate 610 may include a first sub-substrate and a second sub-substrate. Each layer of the sub-substrate is provided with a first coil group and a second coil group, and the coils on the sub-substrates of different layers can pass through孔连接。 Hole connection. One end of the first coil located in the first sub-substrate is connected to the anode, and the other end of the first coil located in the first sub-substrate can pass through the first via hole and one end of the first coil located in the second sub-substrate connect. The other end of the first coil located on the second sub-substrate is connected to one end of the second coil located on the second sub-substrate, and the other end of the second coil located on the second sub-substrate can be connected to the One end of the second coil on the first sub-substrate is connected, and the other end of the second coil on the first sub-substrate is connected to the negative electrode.

在本公开实施例中，该第一子基板上的第一线圈、第二子基板上的第一线圈、该第一子基板上的第二线圈以及第二子基板上的第二线圈可以组成为一个连续的线圈。参考图14，以第一线圈C0和第二线圈C1为例，该第一子基板上中每个线圈的顶层布线以实线表示，底层布线以虚线表示。将线圈从该第一子基板上的插座09的引脚3引出，围绕第一中心区域R1逆时针方向绕线n0匝后，在第一子基板上形成第一线圈C0。之后将该线圈通过第一过孔01由第一子基板换层到第二子基板。并继续围绕第二子基板上的第一中心区域R1逆时针方向绕线n0匝，在第二子基板上形成第一线圈C0。之后，继续将该线圈围绕第二子基板上的第二中心区域R2顺时针方向绕线n0匝，在第二子基板上形成第二线圈C1。之后，将该线圈通过第二过孔02由第二子基板切换到第一子基板，并围绕第一子基板的第二中心区域R2顺时针方向绕线n0匝，在第一子基板上形成第二线圈C1。最后将该线圈与插座09的引脚4连接。其中，该插座09与振镜驱动组件50连接，该振镜驱动组件50可以通过插座09的引脚向第一线圈C0和第二线圈C1提供振镜驱动电流。In the embodiments of the present disclosure, the first coil on the first sub-substrate, the first coil on the second sub-substrate, the second coil on the first sub-substrate, and the second coil on the second sub-substrate may be composed of It is a continuous coil. Referring to FIG. 14, taking the first coil C0 and the second coil C1 as an example, the top wiring of each coil on the first sub-substrate is represented by a solid line, and the bottom wiring is represented by a dashed line. The coil is led out from the pin 3 of the socket 09 on the first sub-substrate, and after n0 turns are wound counterclockwise around the first central region R1, the first coil C0 is formed on the first sub-substrate. Then, the coil is changed from the first sub-substrate to the second sub-substrate through the first via 01. And continue to wind n0 turns counterclockwise around the first central area R1 on the second sub-substrate to form the first coil C0 on the second sub-substrate. After that, the coil is continuously wound around the second central region R2 on the second sub-substrate with n0 turns in a clockwise direction to form the second coil C1 on the second sub-substrate. After that, the coil is switched from the second sub-substrate to the first sub-substrate through the second via 02, and n0 turns are wound clockwise around the second central area R2 of the first sub-substrate to form on the first sub-substrate The second coil C1. Finally, connect the coil to pin 4 of the socket 09. Wherein, the socket 09 is connected to the galvanometer drive assembly 50, and the galvanometer drive assembly 50 can provide the galvanometer drive current to the first coil C0 and the second coil C1 through the pins of the socket 09.

在本公开实施例中，每个线圈组611均是通过基板610上的走线来实现的绕线，由此简化了工艺加工，大大降低成本。且由于该任意相邻两匝线圈之间存在空间立体的间隙，因此在为线圈组通电后，该种绕线方式有助于线圈组中的线圈散热，从而避免出现线圈的温度过高而影响振镜偏转的情况，确保了振镜偏转的精度以及可靠性。且由于基板610的布线材料为铜，基板每层非布线区域铺铜接地，并实现有效散热，因此在为线圈组611通电后，该基板610能够快速进行大面积的散热，从而进一步确保了振镜偏转的精度以及可靠性。In the embodiment of the present disclosure, each coil group 611 is wound by wires on the substrate 610, which simplifies the process and greatly reduces the cost. And because there is a three-dimensional gap between any two adjacent turns of the coil, after the coil group is energized, this winding method helps the coils in the coil group to dissipate heat, thereby avoiding the effect of excessively high coil temperature. The deflection of the galvanometer ensures the accuracy and reliability of the deflection of the galvanometer. And because the wiring material of the substrate 610 is copper, the non-wiring area of each layer of the substrate is grounded with copper, and effective heat dissipation is realized. Therefore, after the coil assembly 611 is energized, the substrate 610 can quickly dissipate heat in a large area, thereby further ensuring vibration The accuracy and reliability of mirror deflection.

可选的，该基板610可以包括偶数层子基板，例如该基板610可以包括2层子基板、4子基板或者8层子基板。本公开实施例对子基板的层数不做限定。通过增加子基板的层数，能够增加线圈的匝数，增强对应的磁性组件之间的磁场，从而增加光学镜面发生翻转的磁力。或者可以通过缩小每个子基板的尺寸来增加子基板的层数以保证线圈的匝数不变，进而确保线圈对应的磁性组件之间的磁场产生的磁力不变。Optionally, the substrate 610 may include even-numbered sub-substrates. For example, the substrate 610 may include two-layer sub-substrates, four sub-substrates, or eight-layer sub-substrates. The embodiment of the present disclosure does not limit the number of layers of the sub-substrate. By increasing the number of layers of the sub-substrate, the number of turns of the coil can be increased, and the magnetic field between the corresponding magnetic components can be enhanced, thereby increasing the magnetic force of the optical mirror surface flipping. Alternatively, the number of layers of the sub-substrates can be increased by reducing the size of each sub-substrate to ensure that the number of turns of the coil remains unchanged, thereby ensuring that the magnetic force generated by the magnetic field between the magnetic components corresponding to the coil remains unchanged.

可选的，参考图14和图15，该第二边缘区域L3可以包括四个顶角区域03，该电路板61还可以包括设置在基板610上的四个弹性垫片，分别为弹性垫片G1、弹性垫片G2、弹性垫片G3和弹性垫片G4。每个弹性垫片用于与第二边缘区域L3的一个顶角区域03固定连接，且每个弹性垫片在基板610上的正投影与第二边缘区域L3的一个顶角区域03在基板610上的正投影重叠。示例的，该每个弹性垫片可以与第二边缘区域L3的一个顶角区域03粘贴。Optionally, referring to FIGS. 14 and 15, the second edge area L3 may include four corner areas 03, and the circuit board 61 may also include four elastic pads arranged on the substrate 610, which are respectively elastic pads. G1, elastic gasket G2, elastic gasket G3 and elastic gasket G4. Each elastic gasket is used to be fixedly connected to a corner area 03 of the second edge area L3, and the orthographic projection of each elastic gasket on the substrate 610 and a corner area 03 of the second edge area L3 are on the substrate 610 The orthographic projections overlap. For example, each elastic gasket can be pasted with a vertex area 03 of the second edge area L3.

可选的，每个弹性垫片可以为三角形，且每个顶角区域03为三角形区域，且每个弹性垫片的尺寸与对应的一个顶角区域03的尺寸相同。示例的，该每个弹性垫片可以均为等边三角形，相应的，该每个顶角区域03可以为等边三角形区域。该每个弹性垫片的平面度的精度大于或者等于0.1mm，且该每个弹性垫片具有厚度，由此可以支撑起光学镜面62，另外为了避免装配过程中刮伤手，可以将等边三角形的三个角进行弧度处理。Optionally, each elastic gasket may be triangular, and each vertex area 03 is a triangular area, and the size of each elastic gasket is the same as the size of a corresponding vertex area 03. For example, each elastic gasket may be an equilateral triangle, and correspondingly, each vertex area 03 may be an equilateral triangle area. The flatness accuracy of each elastic gasket is greater than or equal to 0.1mm, and each elastic gasket has a thickness, which can support the optical mirror 62. In addition, in order to avoid scratching the hand during the assembly process, the equilateral The three corners of the triangle are processed in radians.

可选的，参考图15，该第二边缘区域L3中还设置有多个第三镂空区域L4，多个第三镂空区域L4环绕第二镂空区域L2。且任意相邻的两个第三镂空区域L4之间存在连接轴04，即该任意相邻的两个第三镂空区域L4之间存在不连通，从而形成以第一轴X和第二轴Y为旋转轴旋转的光学镜面62。示例的，该多个第三镂空区域L4可以包括四个第三镂空区域L4，由此在第二边缘区域L3上形成边缘子区域05。通过在第二边缘区域设置多个第三镂空区域，可以减轻光学镜面的重量。Optionally, referring to FIG. 15, the second edge area L3 is further provided with a plurality of third hollowed-out areas L4, and the plurality of third hollowed-out areas L4 surround the second hollowed-out area L2. And there is a connecting shaft 04 between any two adjacent third hollow areas L4, that is, there is no communication between any two adjacent third hollow areas L4, thereby forming a first axis X and a second axis Y It is an optical mirror surface 62 that rotates by a rotation axis. For example, the plurality of third hollowed-out areas L4 may include four third hollowed-out areas L4, thereby forming edge sub-regions 05 on the second edge area L3. By providing a plurality of third hollow areas in the second edge area, the weight of the optical mirror surface can be reduced.

可选的，参考图14和图15，该光学玻璃621在基板610上的正投影以及第二镂空区域L2在基板610上的正投影均位于第一镂空区域L0内，且光学玻璃621在基板610上的正投影覆盖第二镂空区域L2在基板610上的正投影。可选的，该光学玻璃621在基板610上的正投影的中心点以及第二镂空区域L2在基板610上的正投影的中心点均位于第一镂空区域L0内，且均与第一镂空区域L0的中心点重合。Optionally, referring to FIGS. 14 and 15, the orthographic projection of the optical glass 621 on the substrate 610 and the orthographic projection of the second hollow area L2 on the substrate 610 are both located in the first hollow area L0, and the optical glass 621 is on the substrate The orthographic projection on 610 covers the orthographic projection of the second hollow area L2 on the substrate 610. Optionally, the center point of the orthographic projection of the optical glass 621 on the substrate 610 and the center point of the orthographic projection of the second hollowed-out area L2 on the substrate 610 are both located in the first hollowed-out area L0 and are both aligned with the first hollowed-out area. The center points of L0 coincide.

在本公开实施例中，该第一镂空区域L0的尺寸取决于投影设备的光路中光斑的尺寸，也即是经过TIR透镜110全反射后的光线的尺寸。该第一镂空区域L0的尺寸大于该光斑的尺寸，且该第一镂空区域L0的尺寸大于光学玻璃621的尺寸，从而确保经过TIR透镜110全反射后的光线能够完全投射到投影屏幕上，且不会有亮度的损失。图15所示的虚线区域051即与该第一镂空区域L0的尺寸相同。In the embodiment of the present disclosure, the size of the first hollowed-out area L0 depends on the size of the light spot in the optical path of the projection device, that is, the size of the light after being totally reflected by the TIR lens 110. The size of the first hollow area L0 is greater than the size of the light spot, and the size of the first hollow area L0 is greater than the size of the optical glass 621, so as to ensure that the light after being totally reflected by the TIR lens 110 can be completely projected on the projection screen, and There will be no loss of brightness. The dashed area 051 shown in FIG. 15 is the same size as the first hollowed-out area L0.

该光学玻璃621的尺寸大于第二镂空区域L2的尺寸，从而确保光学玻璃621可以覆盖该第二镂空区域L2。示例的，该光学玻璃621的尺寸可以为23mm×23mm，该第一镂空区域L0的尺寸可以为24mm×24mm，该第二镂空区域L2的尺寸为21mm×21mm。The size of the optical glass 621 is larger than the size of the second hollowed-out area L2, so as to ensure that the optical glass 621 can cover the second hollowed-out area L2. For example, the size of the optical glass 621 may be 23 mm×23 mm, the size of the first hollow area L0 may be 24 mm×24 mm, and the size of the second hollow area L2 may be 21 mm×21 mm.

参考图13、图14和图15，在形成振镜60的过程中，首先将光学玻璃621粘贴到承载板620的第二边缘区域L3上，以使该光学玻璃621覆盖该第二镂空区域L2。之后将每个磁性组件622中的第一磁性组件6220和第二磁性组件6221粘贴在第二镂空区域L2的两侧，且不同磁性组件位于第二镂空区域L2的不同侧，从而得到光学镜面62。之后将基板中的弹性垫片G1、弹性垫片G2、弹性垫片G3和弹性垫片G4与上述光学镜面62中对应的一个顶角区域03粘贴，由此得到振镜60。Referring to FIGS. 13, 14 and 15, in the process of forming the galvanometer lens 60, the optical glass 621 is first pasted on the second edge area L3 of the carrier plate 620 so that the optical glass 621 covers the second hollow area L2 . Afterwards, the first magnetic component 6220 and the second magnetic component 6221 of each magnetic component 622 are pasted on both sides of the second hollowed-out area L2, and different magnetic components are located on different sides of the second hollowed-out area L2, thereby obtaining the optical mirror 62 . Then, the elastic gasket G1, the elastic gasket G2, the elastic gasket G3, and the elastic gasket G4 in the substrate are pasted with a corresponding vertex area 03 in the above-mentioned optical mirror surface 62, thereby obtaining a galvanometer 60.

可选的，该振镜60中的光学镜面62位于靠近光阀40的一侧，即该光学镜面62中的承载板620位于靠近光阀40的一侧，由于承载板620的板面为光滑的镜面材质，在光学镜面62未发生偏转时，即该光学镜面62的镜面与水平面平行时，该承载板620可以反射照射至承载板620上的光，从而有助于整个光学镜面62散热，降低了基板的温度，避免振镜因吸收过多热量而损坏。Optionally, the optical mirror surface 62 in the galvanometer 60 is located on the side close to the light valve 40, that is, the bearing plate 620 in the optical mirror surface 62 is located on the side close to the light valve 40, because the surface of the bearing plate 620 is smooth. When the optical mirror 62 is not deflected, that is, when the mirror surface of the optical mirror 62 is parallel to the horizontal plane, the carrying plate 620 can reflect the light irradiated on the carrying plate 620, thereby helping the entire optical mirror 62 to dissipate heat. The temperature of the substrate is reduced to avoid damage to the galvanometer due to excessive heat absorption.

参考图14，该第一边缘区域L1还可以包括多个通孔，该多个通孔用于使用螺丝或减震件等材料将基板61固定在投影设备中的支架上，进而将振镜60固定在该支架上。示例的，该多个通孔可以包括四个通孔，分别为通孔S1，通孔S2，通孔S3和通孔S4，该每个通孔可以为螺丝孔。Referring to FIG. 14, the first edge region L1 may also include a plurality of through holes, and the plurality of through holes are used to fix the substrate 61 on the bracket in the projection device using materials such as screws or shock absorbers, so as to fix the galvanometer 60 Fixed on the bracket. For example, the plurality of through holes may include four through holes, namely through hole S1, through hole S2, through hole S3 and through hole S4, and each through hole may be a screw hole.

本公开实施例提供的振镜的尺寸和体积较小，有利于投影设备的小型化设计，且噪音大大降低可低至20分贝(20dB)。同时该振镜也可以直接兼容到现有产品中，只需要更改光路***中用于固定振镜的支架即可。The size and volume of the galvanometer provided by the embodiments of the present disclosure are small, which is beneficial to the miniaturized design of the projection device, and the noise is greatly reduced as low as 20 decibels (20 dB). At the same time, the galvanometer can also be directly compatible with existing products, and only the bracket for fixing the galvanometer in the optical path system needs to be changed.

在本公开实施例中，参考图14，该基板61还设置有带电可擦可编程只读存储器(electrically erasable programmable read only memory，EEPROM)06和温度传感器(temperature sensor，TS)07。该EEPROM 06和TS 07分别通过I2C插座09连接。线圈在通电后，TS 07可以实时检测基板上线圈组的环境温度，并将该环境温度发送至显示控制组件10。显示控制组件10在接收到该环境温度后，可以检测该环境温度是否处于温度范围内。若该环境温度未处于温度范围内，表明该线圈组和承载板的环境温度异常，即该环境温度会对线圈组的电流和承载板的变形都造成影响，因为热胀冷缩会影响承载板的变形量，从而影响振镜偏转的精度。则显示控制组件10可以向该EEPROM 06发送校正参数获取指令，该校正参数获取指令中携带有该环境温度。该EEPROM 06在接收到该环境温度后，可以从预先存储的温度与校正参数的对应关系中获取该环境温度对应的校正参数，并将获取到的校正参数发送至显示控制组件10。显示控制组件10可以根据该校正参数调整向振镜驱动组件50传输的振镜电流控制信号，进而调整振镜驱动组件50向振镜提供的振镜驱动电流，从而及时消除温度对振镜偏转的精度的影响。该校正参数可以为振镜电流控制信号的幅值。In the embodiment of the present disclosure, referring to FIG. 14, the substrate 61 is further provided with an electrically erasable programmable read only memory (EEPROM) 06 and a temperature sensor (TS) 07. The EEPROM 06 and TS 07 are respectively connected through the I2C socket 09. After the coil is energized, TS 07 can detect the ambient temperature of the coil group on the substrate in real time, and send the ambient temperature to the display control component 10. After receiving the ambient temperature, the display control component 10 can detect whether the ambient temperature is within the temperature range. If the ambient temperature is not within the temperature range, it indicates that the ambient temperature of the coil assembly and the carrier board is abnormal, that is, the ambient temperature will affect the current of the coil assembly and the deformation of the carrier board, because thermal expansion and contraction will affect the carrier board The amount of deformation affects the accuracy of the galvanometer deflection. Then the display control component 10 can send a calibration parameter acquisition instruction to the EEPROM 06, and the calibration parameter acquisition instruction carries the ambient temperature. After the EEPROM 06 receives the ambient temperature, it can acquire the correction parameter corresponding to the ambient temperature from the corresponding relationship between the temperature and the correction parameter stored in advance, and send the acquired correction parameter to the display control component 10. The display control assembly 10 can adjust the galvanometer current control signal transmitted to the galvanometer drive assembly 50 according to the correction parameters, and then adjust the galvanometer drive current provided by the galvanometer drive assembly 50 to the galvanometer, so as to eliminate the temperature effect on the galvanometer deflection in time. The impact of accuracy. The correction parameter may be the amplitude of the galvanometer current control signal.

下述以振镜驱动组件50驱动振镜60以第二轴Y为旋转轴沿第三方向和第四方向偏转为例，对振镜60的驱动过程进行说明。为了便于说明，图16所示的磁性组件622和粘贴有光学玻璃的承载板分开表示。参考图16，光学镜面62中设置的第一磁性组件6220和第二磁性组件6221靠近线圈一端的极性均为N极。In the following, the driving process of the galvanometer 60 is described by taking the galvanometer drive assembly 50 to drive the galvanometer 60 with the second axis Y as the rotation axis to deflect in the third direction and the fourth direction as an example. For ease of description, the magnetic component 622 shown in FIG. 16 and the carrier plate pasted with optical glass are shown separately. Referring to FIG. 16, the polarities of the first magnetic component 6220 and the second magnetic component 6221 provided in the optical mirror 62 close to the coil are both N poles.

当振镜驱动组件50未向振镜60提供振镜驱动电流时，光学玻璃621处于位置004处。当振镜驱动组件50向用于驱动振镜以第二轴为旋转轴转动的第二线圈组提供正向的振镜驱动电流时，例如向图16所示的第一线圈B0和第二线圈B1提供正向的振镜驱动电流，即振镜驱动电流从插座09的引脚5流入，从引脚6流出时(该引脚5为电流的正极AY+，该引脚6为电流的负极AY-)，第一线圈B0和第二线圈B1均产生磁场，此磁场与磁性组件622的磁场类似，会产生N极和S极。根据右手螺旋定则，用右手握住线圈，右手四指的弯曲方向与电流的方向一致，则右手大拇指所指的一端是第一线圈B0的N极，即第一线圈B0靠近光学镜面62的一侧为N极，该第一线圈B0远离该光学镜面62的一侧为S极。根据右手螺旋定则和第二线圈B1的电流的方向，可以得到该第二线圈B1靠近光学镜面62的一侧为S极，该第二线圈B1远离该光学镜面62的一侧为N极。When the galvanometer drive assembly 50 does not provide the galvanometer drive current to the galvanometer 60, the optical glass 621 is at the position 004. When the galvanometer drive assembly 50 provides a positive galvanometer drive current to the second coil group for driving the galvanometer to rotate with the second axis as the rotation axis, for example, to the first coil B0 and the second coil shown in FIG. B1 provides positive galvanometer drive current, that is, when the galvanometer drive current flows in from pin 5 of socket 09 and flows out from pin 6 (the pin 5 is the positive pole of the current AY+, and the pin 6 is the negative pole of the current AY -), both the first coil B0 and the second coil B1 generate a magnetic field, which is similar to the magnetic field of the magnetic component 622, and produces an N pole and an S pole. According to the right-hand spiral rule, hold the coil with the right hand, and the bending direction of the four fingers of the right hand is consistent with the direction of the current, then the end pointed by the thumb of the right hand is the N pole of the first coil B0, that is, the first coil B0 is close to the optical mirror 62 The side of the first coil B0 is the N pole, and the side of the first coil B0 away from the optical mirror surface 62 is the S pole. According to the right-hand spiral rule and the direction of the current of the second coil B1, it can be obtained that the side of the second coil B1 close to the optical mirror 62 is an S pole, and the side of the second coil B1 away from the optical mirror 62 is an N pole.

参考图16，由于该第一线圈B0靠近光学镜面62的一侧为N极，该第一线圈B0对应的第一磁性组件6220为N极，因此该第一线圈B0和第一磁性组件6220之间会产生相互排斥的作用力。由于第一线圈B0固定在基板61上，该基板61固定在结构件上，因此该基板61不会发生移动。根据作用力和反作用力的原理，该第一磁性组件6220会受到向上的作用力，由此该第一磁性组件6220带动光学玻璃621向上偏移。同时由于第二线圈B1靠近光学镜面62的一侧为S极，该第二线圈B1对应的第二磁性组件6221为N极，因此该第二线圈B1和第二磁性组件6221之间产生相互吸引的作用力，由此该第二磁性组件6221会带动光学玻璃621向下偏移。在该过程中，光学玻璃621左右两侧同时受到逆时针旋转的作用力，在该作用力的作用下，光学玻璃621以第二轴Y为旋转轴沿逆时针方向偏转，直到基板与承载板620之间的弹力平衡后，该光学玻璃621停止旋转并保持不变。由此，光学玻璃621从图16所示的位置004偏转至位置005处，从而实现了光线的偏移，即光斑的移动，进而实现了待显示的图像在投影屏幕上的位置的移动。Referring to FIG. 16, since the side of the first coil B0 close to the optical mirror 62 is an N pole, the first magnetic component 6220 corresponding to the first coil B0 is an N pole, so the first coil B0 and the first magnetic component 6220 There will be mutual repulsive forces. Since the first coil B0 is fixed on the substrate 61 and the substrate 61 is fixed on the structural member, the substrate 61 will not move. According to the principle of acting force and reaction force, the first magnetic component 6220 will receive an upward force, so that the first magnetic component 6220 drives the optical glass 621 to shift upward. At the same time, since the side of the second coil B1 close to the optical mirror 62 is an S pole, and the second magnetic component 6221 corresponding to the second coil B1 is an N pole, the second coil B1 and the second magnetic component 6221 are attracted to each other. As a result, the second magnetic component 6221 will drive the optical glass 621 to deviate downward. During this process, the left and right sides of the optical glass 621 are simultaneously subjected to a counterclockwise rotation force. Under this force, the optical glass 621 is deflected in a counterclockwise direction with the second axis Y as the rotation axis until the substrate and the carrier plate After the elastic force between 620 is balanced, the optical glass 621 stops rotating and remains unchanged. Thus, the optical glass 621 is deflected from the position 004 shown in FIG. 16 to the position 005, thereby realizing the shift of the light, that is, the movement of the light spot, and further realizing the movement of the position of the image to be displayed on the projection screen.

当振镜驱动组件50向用于驱动振镜以第二轴Y为旋转轴转动的第二线圈组提供反向的振镜驱动电流时，例如向图16所示的第一线圈B0和第二线圈B1提供反向的振镜驱动电流，即振镜驱动电流从插座09的引脚6流入，从引脚5流出时(该引脚6为电流的负极AY-，该引脚5为电流的正极AY+)。根据右手螺旋定则和第一线圈B0的电流方向，通电后的第一线圈B0靠近光学镜面62的一侧为S极，该第一线圈B0远离光学镜面62的一侧为N极。该第一线圈B0与第一磁性组件6220之间产生相互吸引的作用力，由此该第一磁性组件6220带动光学玻璃621向下偏移。同时根据右手螺旋定则和第二线圈B1的电流方向，通电后的第二线圈B1靠近光学镜面62的一侧为N极，该第二线圈B1远离该光学镜面62的一侧为S极，该第二线圈B1和第二磁性组件6222之间产生相互排斥的作用力，由此该第二磁性组件6222带动光学玻璃621向上偏移。在该过程中，光学玻璃621左右两侧同时受到顺时针旋转的作用力，在该作用力的作用下，该光学玻璃621以第二轴Y为旋转轴沿顺时针方向偏转，直到基板与承载板之间的弹力平衡后，该光学玻璃621停止旋转并保持不变。由此实现光学玻璃621从图16所示的位置005偏移至另一位置处，从而实现光斑由从位置005到另一个位置的偏移，进而实现了待显示的图像在投影屏幕上的位置的移动。When the galvanometer drive assembly 50 provides a reverse galvanometer drive current to the second coil group for driving the galvanometer to rotate with the second axis Y as the rotation axis, for example, to the first coil B0 and the second coil shown in FIG. Coil B1 provides reverse galvanometer drive current, that is, when the galvanometer drive current flows in from pin 6 of socket 09 and flows out from pin 5 (the pin 6 is the negative electrode AY- of the current, and the pin 5 is the current Positive AY+). According to the right-handed spiral rule and the current direction of the first coil B0, the side of the first coil B0 that is energized close to the optical mirror 62 is an S pole, and the side of the first coil B0 away from the optical mirror 62 is an N pole. An attractive force is generated between the first coil B0 and the first magnetic component 6220, whereby the first magnetic component 6220 drives the optical glass 621 to shift downward. At the same time, according to the right-hand spiral rule and the current direction of the second coil B1, the side of the second coil B1 that is energized close to the optical mirror 62 is the N pole, and the side of the second coil B1 away from the optical mirror 62 is the S pole. A mutually repulsive force is generated between the second coil B1 and the second magnetic component 6222, so that the second magnetic component 6222 drives the optical glass 621 to shift upward. During this process, the left and right sides of the optical glass 621 are simultaneously subjected to a clockwise rotation force. Under the action of the force, the optical glass 621 is deflected in the clockwise direction with the second axis Y as the rotation axis until the substrate and the carrier are After the elastic force between the plates is balanced, the optical glass 621 stops rotating and remains unchanged. This realizes that the optical glass 621 is shifted from the position 005 shown in FIG. 16 to another position, thereby realizing the shift of the light spot from the position 005 to another position, thereby realizing the position of the image to be displayed on the projection screen Mobile.

同理，振镜驱动组件50驱动振镜60沿第一轴X为旋转轴沿第一方向和第二方向偏转的过程，可以参考振镜驱动组件50驱动振镜以第二轴Y为旋转轴沿第三方向和第四方向偏转的过程，本公开实施例再次不再赘述。Similarly, the galvanometer drive assembly 50 drives the galvanometer 60 along the first axis X as the rotation axis to deflect in the first direction and the second direction, you can refer to the galvanometer drive assembly 50 to drive the galvanometer with the second axis Y as the rotation axis. The process of deflection in the third direction and the fourth direction will not be described again in the embodiments of the present disclosure.

在本公开实施例中，参考图17，假设振镜60以第二轴Y为旋转轴沿第三方向(逆时针方向)偏转第一角度θ1，光学玻璃621的厚度为h，光学玻璃621的折射率为n，光学玻璃621的内部折射光线的长度为L，折射角为ɑ，由于光线沿第三轴Z的方向垂直入射，根据直角关系，该入射光的入射角等于该第一角度为θ1。且由于在光学玻璃621面上的法线平行，因此光学玻璃621内部折射光学的入射角也为ɑ，则根据折射定理光学玻璃621出射光线的出射角等于入射角θ1，所以光学玻璃621的出射光线平行入射光线沿第三轴Z轴方向射出。In the embodiment of the present disclosure, referring to FIG. 17, it is assumed that the galvanometer 60 deflects the first angle θ1 in the third direction (counterclockwise) with the second axis Y as the rotation axis, the thickness of the optical glass 621 is h, and the thickness of the optical glass 621 The refractive index is n, the length of the refracted light inside the optical glass 621 is L, and the refraction angle is ɑ. Since the light is incident perpendicularly along the direction of the third axis Z, according to the right angle relationship, the incident angle of the incident light is equal to the first angle. θ1. And since the normals on the surface of the optical glass 621 are parallel, the incident angle of the refractive optics inside the optical glass 621 is also ɑ. According to the refraction theorem, the exit angle of the light emitted by the optical glass 621 is equal to the incident angle θ1, so the output of the optical glass 621 The light parallel to the incident light is emitted along the Z axis direction of the third axis.

参考图17的(一)，振镜驱动组件50未向振镜60提供振镜驱动电流时，光线沿第三轴Z垂直入射，振镜60的第一轴X和第二轴Y均与输入的光线垂直。入射光沿垂直于第一轴X和第二轴Y的方向直接出射。参考图17的(二)，在振镜60以第二轴Y为旋转轴逆时针偏转第一角度θ1时，出射光相较于振镜60在图17的(一)所示的状态，出射光沿第一轴X的正方向的偏移距离为d1，该d1为待投影的目标图像中的像素在投影屏幕上偏移的距离。Referring to Figure 17 (a), when the galvanometer drive assembly 50 does not provide the galvanometer drive current to the galvanometer 60, the light is incident perpendicularly along the third axis Z, and the first axis X and the second axis Y of the galvanometer 60 are both the same as the input The light is vertical. The incident light exits directly along the direction perpendicular to the first axis X and the second axis Y. Referring to Fig. 17 (2), when the galvanometer 60 is deflected by the first angle θ1 counterclockwise with the second axis Y as the rotation axis, the emitted light is compared with the state of the galvanometer 60 in Fig. 17 (1). The offset distance of the emitted light along the positive direction of the first axis X is d1, which is the offset distance of the pixels in the target image to be projected on the projection screen.

假设光学玻璃621的内部折射光线与Z轴的夹角为β，折射角为ɑ，振镜60以第二轴Y为旋转轴逆时针偏转第一角度θ1，则该β＝θ1-ɑ，折射率

其中，光学玻璃621的内部折射光线的长度

该

即

由该公式可以看出，像素的偏移距离d1只与振镜60的偏转角度θ1，光学玻璃621的折射率n以及光学玻璃621的厚度h相关。在振镜组装完成后，该光学玻璃621的折射率n和厚度h均为确定的数值，因此像素的偏移距离d1主要随着振镜偏转的角度的改变而改变。 Assuming that the angle between the internal refracted light of the optical glass 621 and the Z axis is β, the refraction angle is ɑ, and the galvanometer 60 deflects the first angle θ1 counterclockwise with the second axis Y as the rotation axis, then β=θ1-ɑ, refraction Rate

Among them, the length of the refracted light inside the optical glass 621

Should

which is

It can be seen from this formula that the pixel offset distance d1 is only related to the deflection angle θ1 of the galvanometer 60, the refractive index n of the optical glass 621, and the thickness h of the optical glass 621. After the galvanometer is assembled, the refractive index n and the thickness h of the optical glass 621 are both determined values. Therefore, the offset distance d1 of the pixel mainly changes with the deflection angle of the galvanometer.

示例的，如经过2K分辨率的光阀最终投影显示的图像中像素的边长为5.4微米(um)，为实现4K分辨率的图像显示，则振镜每次偏移距离d1等于二分之一×像素的边长，即d1＝2.7um。For example, if the side length of the pixel in the image finally projected and displayed by the 2K resolution light valve is 5.4 micrometers (um), in order to realize the 4K resolution image display, the offset distance d1 of the galvanometer is equal to half each time One × the side length of the pixel, that is, d1=2.7um.

在本公开实施例中，显示控制组件10向振镜驱动组件50发送振镜电流控制信号，该振镜驱动组件50向振镜60提供振镜驱动电流，以驱动振镜以第一轴X为旋转轴沿第一方向或者第二方向偏转，或者驱动振镜60以第二轴Y为旋转轴沿第三方向或者第四方向偏转。即振镜的偏转共有四种情况，该四种情况的原理相同。In the embodiment of the present disclosure, the display control assembly 10 sends the galvanometer current control signal to the galvanometer drive assembly 50, and the galvanometer drive assembly 50 provides the galvanometer drive current to the galvanometer 60 to drive the galvanometer to take the first axis X as The rotation axis is deflected in the first direction or the second direction, or the galvanometer 60 is driven to deflect in the third direction or the fourth direction with the second axis Y as the rotation axis. That is, there are four cases of the deflection of the galvanometer, and the principles of the four cases are the same.

在本公开实施例中，参考图2，若该投影设备为投影电视机，该投影设备还可以包括电源150、启动控制组件160和程序存储组件170。该主控制芯片00分别与启动控制组件160和显示控制组件10连接，电源150与激光器驱动组件20连接，程序存储组件170与显示控制组件10连接。In the embodiment of the present disclosure, referring to FIG. 2, if the projection device is a projection TV, the projection device may further include a power supply 150, a startup control component 160 and a program storage component 170. The main control chip 00 is respectively connected to the startup control component 160 and the display control component 10, the power supply 150 is connected to the laser driving component 20, and the program storage component 170 is connected to the display control component 10.

主控制芯片00向启动控制组件160发送启动命令，启动控制组件160在接收到该启动命令后开始工作，按照启动控制组件160的上电时序依次向显示控制组件输出1.1伏(V)，1.8V，3.3V，2.5V和5V以给显示控制组件10供电。之后在供电电压及时序正确后，启动控制组件160向显示控制组件10发送电源感应(power sense，POSENSE)信号和电源正常(power good，PWRGOOD)信号，显示控制组件10在接收到两个控制信号后，从外接的程序存储组件170中读取程序并进行初始化，此时整个投影设备开始工作。显示控制组件10通过串行外设接口(serial peripheral interface，SPI)通信配置启动控制组件160，并指示该启动控制组件160向光阀40开始供电。之后启动控制组件160向光阀40输出3个电压，分别为电压偏置(voltage bias，VBIAS)为18V，电压复位(voltage reset，VRST)为-14V，电压偏移(voltage offset，VOFS)为10V，在光阀40的电压正常后，该光阀40开始工作。显示控制电路10通过高速串行接口(high-speed serial interface，HSSI)以594MHz向光阀40发送子图像的基色色阶值，以实现子图像。投影设备中的供电由电源板将100V～240V的交流电转换为直流电为各个组件供电。The main control chip 00 sends a startup command to the startup control component 160. The startup control component 160 starts to work after receiving the startup command, and outputs 1.1 volts (V), 1.8V to the display control component in turn according to the power-on sequence of the startup control component 160. , 3.3V, 2.5V and 5V to supply power to the display control component 10. After the power supply voltage and timing are correct, the startup control component 160 sends a power sense (POSENSE) signal and a power good (PWRGOOD) signal to the display control component 10. The display control component 10 receives two control signals After that, the program is read from the external program storage component 170 and initialized, and the entire projection device starts to work at this time. The display control component 10 configures the startup control component 160 through a serial peripheral interface (SPI) communication, and instructs the startup control component 160 to start powering the light valve 40. After that, the control component 160 is activated to output 3 voltages to the light valve 40, which are respectively a voltage bias (VBIAS) of 18V, a voltage reset (VRST) of -14V, and a voltage offset (VOFS) of 10V, after the voltage of the light valve 40 is normal, the light valve 40 starts to work. The display control circuit 10 sends the primary color gradation value of the sub-image to the light valve 40 through a high-speed serial interface (HSSI) at 594 MHz to realize the sub-image. The power supply in the projection equipment is converted from 100V to 240V alternating current to direct current by the power board to supply power to each component.

相关技术中，参考图18，投影电视机的主控制芯片201在接收到4K视频信号或数字电视信号后，对该图像信号进行解码，以60HZ的速率将分辨率为3840×2160分的图像信号通过8路VX1信号形式传输给现场可编程逻辑门阵列(field programmable gate array，FPGA)202，FPGA 202对分辨率为3840×2160的图像信号进行处理后，将一帧4K(即3840×2160)信号分解成4个子帧2K(即1920×1080)信号，并缓存至FPGA 202外接的2组双倍数据速率(double data rate，DDR)203中，其中DDR 203为14位地址(address，ADDR)线和32位数据(data)线。FPGA电源管理输出1.1V，1.15V，1.5V，2.5V，3.3V，DDR_VTT，DDR_VREF为FPGA 202和DDR 203供电。FPGA 202将一帧子图像的2K(1920×1080)信号的基色色阶值以60比特(binary digit，bit)晶体管-晶体管逻辑(transistor transistor logic)TTL数据形式分别输入到第一控制芯片208和第二控制芯片209中。第一控制芯片208和第二控制芯片209分别控制一帧子图像的一半基色色阶值的数据量。并分别以240Hz，按照2路低电压差分信号(low-voltage differential signaling，LVDS)数据格式将(960+32)×1080的基色色阶值发送至光阀211，该多出的32列像素为需要重叠处理的像素。第一控制芯片208和第二控制芯片209各控制一帧子图像的一半基色色阶值，从而实现高速传输该子图像的基色色阶值。第一控制芯片208控制2路16对共32对LVDS基色色阶值输送到光阀211，控制一半的图像显示，第二控制芯片209控制2路16共32对LVDS基色色阶值输送到光阀211，控制另一半的图像显示，即第一控制芯片208和第二控制芯片209以240Hz控制4路共64对LVDS基色色阶值输送到光阀211进行2K(1920×1080)图像的显示，LVDS数据对之间只有200毫伏(mV)幅值可以有效保证信号完整性和降低电磁干扰(electro magnetic interference，EMI)。第一控制芯片208和第二控制芯片209的电源供电由启动控制组件207提供，由第一控制芯片208发出控制命令，从而启动该启动控制组件207开始工作，启动控制组件207按照第一控制芯片208和第二控制芯片209的上电时序依次输出1.1V，1.8V，3.3V，2.5V以及5V给第一控制芯片208和第二控制芯片209供电。在供电电压及时序正确后，启动该启动控制组件207输出两个控制信号POSENSE和PWRGOOD给第一控制芯片208。第一控制芯片208收到该两个控制信号后开始从外接的程序存储组件210中读取程序进行初始化运行，此时整个投影设备开始工作，第一控制芯片208通过SPI通信配置启动控制组件207，发送向光阀211开始供电命令，启动控制组件207收到命令后输出光阀211工作的3个电压VBIAS为18V，VRST为-14V，VOFS为10V，光阀211的电压正常后可以开始工作。示例的，该第一控制芯片208和第二控制芯片20均为DLPC6421。In the related art, referring to FIG. 18, the main control chip 201 of the projection TV, after receiving a 4K video signal or a digital TV signal, decodes the image signal, and decodes the image signal with a resolution of 3840×2160 at a rate of 60HZ. It is transmitted to the field programmable logic gate array (FPGA) 202 in the form of 8 VX1 signals. After the FPGA 202 processes the image signal with a resolution of 3840×2160, a frame of 4K (that is, 3840×2160) is processed. The signal is decomposed into 4 sub-frames of 2K (ie 1920×1080) signals and buffered in the 2 sets of double data rate (DDR) 203 external to the FPGA 202, where DDR 203 is a 14-bit address (address, ADDR) Line and 32-bit data (data) line. FPGA power management outputs 1.1V, 1.15V, 1.5V, 2.5V, 3.3V, DDR_VTT, DDR_VREF to power FPGA 202 and DDR 203. FPGA 202 inputs the primary color gradation value of the 2K (1920×1080) signal of one frame of sub-image in the form of 60-bit (binary digit, bit) transistor-transistor logic (transistor logic) TTL data to the first control chip 208 and In the second control chip 209. The first control chip 208 and the second control chip 209 respectively control the data amount of half of the primary color gradation values of one frame of sub-image. And send the primary color gradation value of (960+32)×1080 to the light valve 211 at 240 Hz according to the data format of 2 low-voltage differential signaling (LVDS). The extra 32 columns of pixels are Pixels that need to be overlapped. The first control chip 208 and the second control chip 209 each control half of the primary color gradation value of one frame of sub-image, so as to realize high-speed transmission of the primary color gradation value of the sub-image. The first control chip 208 controls 2 channels, 16 pairs, and 32 pairs of LVDS primary color gradation values to the light valve 211 to control half of the image display, and the second control chip 209 controls 2 channels, 16 pairs, and a total of 32 pairs of LVDS primary color gradation values to the light valve 211. The valve 211 controls the image display of the other half, that is, the first control chip 208 and the second control chip 209 control 4 channels at 240Hz, a total of 64 pairs of LVDS primary color gradation values are sent to the light valve 211 for 2K (1920×1080) image display , Only 200 millivolts (mV) between LVDS data pairs can effectively ensure signal integrity and reduce electromagnetic interference (EMI). The power supply of the first control chip 208 and the second control chip 209 is provided by the startup control component 207, and the first control chip 208 issues a control command to start the startup control component 207 to start working, and the startup control component 207 follows the first control chip The power-on sequence of the 208 and the second control chip 209 sequentially outputs 1.1V, 1.8V, 3.3V, 2.5V and 5V to supply power to the first control chip 208 and the second control chip 209. After the power supply voltage and timing are correct, the startup control component 207 is activated to output two control signals POSENSE and PWRGOOD to the first control chip 208. After receiving the two control signals, the first control chip 208 starts to read the program from the external program storage component 210 for initial operation. At this time, the entire projection device starts to work, and the first control chip 208 configures the startup control component 207 through SPI communication. , Send a command to start power supply to the light valve 211, and the start control component 207 will output the three voltages VBIAS for the light valve 211 to work after receiving the command. VBIAS is 18V, VRST is -14V, and VOFS is 10V. The light valve 211 can start working after the voltage is normal. . For example, the first control chip 208 and the second control chip 20 are both DLPC6421.

本公开实施例提供的显示控制电路10可以实现相关技术中一颗FPGA芯片、4颗DDR以及第一控制芯片208和第二控制芯片20的功能，既简化了的电路，同时又降低了成本。且用于设置该显示控制组件的PCB电路板的布线更简单，层叠更少。同时缩小了该PCB电路板的尺寸，在降低了PCB板的成本的同时，还利于投影设备的小型化设计。对于使用集成显示控制组件10的投影设备其它部分不变，利于产品的快速导入。The display control circuit 10 provided by the embodiment of the present disclosure can realize the functions of one FPGA chip, four DDRs, and the first control chip 208 and the second control chip 20 in the related technology, which not only simplifies the circuit, but also reduces the cost. In addition, the wiring of the PCB circuit board used for setting the display control assembly is simpler and the stacking is less. At the same time, the size of the PCB circuit board is reduced, while reducing the cost of the PCB board, it is also conducive to the miniaturization design of the projection device. The other parts of the projection device using the integrated display control assembly 10 remain unchanged, which facilitates the rapid introduction of products.

以上所述仅为本公开的可选实施例，并不用以限制本公开，凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。The above are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection of the present disclosure. Within range.

Claims

一种投影显示方法，其特征在于，应用于投影设备中的显示控制组件，所述投影设备还包括：光源、光阀、振镜驱动组件以及振镜；所述方法包括：A projection display method, characterized in that it is applied to a display control component in a projection device, the projection device further comprising: a light source, a light valve, a galvanometer drive assembly, and a galvanometer; the method includes:

获取多帧子图像，所述多帧子图像由待投影的目标图像分解得到，其中，所述目标图像的分辨率大于所述光阀的分辨率，每帧所述子图像的分辨率不大于所述光阀的分辨率；Acquire multiple frames of sub-images, which are obtained by decomposing the target image to be projected, wherein the resolution of the target image is greater than the resolution of the light valve, and the resolution of each frame of the sub-image is not greater than The resolution of the light valve;

在所述光源发出的三基色光时序性的照射至所述光阀的过程中，根据每帧所述子图像中像素的基色色阶值控制所述光阀进行翻转，以将所述多帧子图像依次投影显示至投影屏幕上；In the process of sequentially irradiating the light valve with the three primary colors emitted by the light source, the light valve is controlled to be inverted according to the primary color gradation value of the pixel in the sub-image of each frame, so as to turn the multi-frame The sub-images are projected and displayed on the projection screen in sequence;

在投影显示每帧所述子图像的过程中，将对应所述子图像的振镜电流控制信号传输至所述振镜驱动组件，所述振镜电流控制信号用于控制所述振镜驱动组件向所述振镜提供振镜驱动电流，以驱动所述振镜偏转；In the process of projecting and displaying each frame of the sub-image, the galvanometer current control signal corresponding to the sub-image is transmitted to the galvanometer drive assembly, and the galvanometer current control signal is used to control the galvanometer drive assembly Providing the galvanometer drive current to the galvanometer to drive the galvanometer to deflect;

其中，不同帧所述子图像对应的所述振镜电流控制信号不同；并且，在投影显示多帧所述子图像的过程中，所述振镜驱动电流的电流方向交替变化。Wherein, the galvanometer current control signals corresponding to the sub-images in different frames are different; and, during the process of projecting and displaying the sub-images in multiple frames, the current direction of the galvanometer driving current changes alternately.
根据权利要求1所述的方法，其特征在于，所述振镜驱动电流用于驱动所述振镜以第一轴和第二轴中的至少一个为旋转轴偏转，所述第一轴与所述第二轴相交。The method according to claim 1, wherein the galvanometer drive current is used to drive the galvanometer to deflect with at least one of the first axis and the second axis as the rotation axis, and the first axis and the The second axis intersects.
根据权利要求2所述的方法，其特征在于，所述振镜包括层叠设置的电路板和光学镜面，所述电路板包括第一线圈组和第二线圈组，所述第一线圈组中的两个线圈相对设置在所述第一轴的两侧，所述第二线圈组中的两个线圈相对设置在所述第二轴的两侧；The method according to claim 2, wherein the galvanometer includes a circuit board and an optical mirror that are stacked, the circuit board includes a first coil group and a second coil group, and the first coil group Two coils are arranged oppositely on both sides of the first shaft, and two coils in the second coil group are arranged oppositely on both sides of the second shaft;

所述振镜电流控制信号用于控制所述振镜驱动组件向所述第一线圈组提供振镜驱动电流，以驱动所述光学镜面以所述第一轴为旋转轴偏转；The galvanometer current control signal is used to control the galvanometer drive assembly to provide the galvanometer drive current to the first coil group, so as to drive the optical mirror surface to deflect with the first axis as the rotation axis;

和/或，所述振镜电流控制信号用于控制所述振镜驱动组件向所述第二线圈组提供振镜驱动电流，以驱动所述光学镜面以所述第二轴为旋转轴偏转。And/or, the galvanometer current control signal is used to control the galvanometer drive assembly to provide the galvanometer drive current to the second coil group, so as to drive the optical mirror surface to deflect with the second axis as the rotation axis.
根据权利要求3所述的方法，其特征在于，所述多帧子图像包括四帧所述子图像；The method according to claim 3, wherein the multiple frames of sub-images include four frames of the sub-images;

所述在投影显示每帧所述子图像的过程中，将对应所述子图像的振镜电流控制信号传输至所述振镜驱动组件，包括：In the process of projecting and displaying each frame of the sub-image, transmitting the galvanometer current control signal corresponding to the sub-image to the galvanometer driving assembly includes:

在投影显示第一帧子图像的过程中，将第一振镜电流控制信号传输至所述振镜驱动组件，所述第一振镜电流控制信号用于控制所述振镜驱动组件驱动所述振镜以第一轴为旋转轴沿所述第一方向偏转第一角度，并驱动所述振镜以第二轴为旋转轴沿所述第三方向偏转所述第一角度；或者，所述第一振镜电流控制信号用于控制所述振镜驱动组件驱动所述振镜以第一轴为旋转轴沿所述第一方向偏转第二角度；In the process of projecting and displaying the first frame of sub-images, the first galvanometer current control signal is transmitted to the galvanometer drive assembly, and the first galvanometer current control signal is used to control the galvanometer drive assembly to drive the The galvanometer uses a first axis as a rotation axis to deflect a first angle in the first direction, and drives the galvanometer to use a second axis as a rotation axis to deflect the first angle in the third direction; or, the The first galvanometer current control signal is used to control the galvanometer drive assembly to drive the galvanometer to deflect a second angle in the first direction with the first axis as the rotation axis;

在投影显示第二帧子图像的过程中，将第二振镜电流控制信号传输至所述振镜驱动组件，所述第二振镜电流控制信号用于控制所述振镜驱动组件驱动所述振镜以所述第二轴为旋转轴沿所述第四方向偏转所述第二角度；In the process of projecting and displaying the second frame of sub-images, the second galvanometer current control signal is transmitted to the galvanometer drive assembly, and the second galvanometer current control signal is used to control the galvanometer drive assembly to drive the The galvanometer uses the second axis as a rotation axis to deflect the second angle along the fourth direction;

在投影显示第三帧子图像的过程中，将第三振镜电流控制信号传输至所述振镜驱动组件，所述第三振镜电流控制信号用于控制所述振镜驱动组件驱动所述振镜以所述第一轴为旋转轴沿所述第二方向偏转所述第二角度；In the process of projecting and displaying the third frame of sub-images, the third galvanometer current control signal is transmitted to the galvanometer drive assembly, and the third galvanometer current control signal is used to control the galvanometer drive assembly to drive the The galvanometer uses the first axis as a rotation axis to deflect the second angle along the second direction;

在投影显示第四帧子图像的过程中，将第四振镜电流控制信号传输至所述振镜驱动组件，所述第四振镜电流控制信号用于控制所述振镜驱动组件驱动所述振镜以所述第二轴为旋转轴沿所述第三方向偏转所述第二角度；In the process of projecting and displaying the fourth frame of sub-images, the fourth galvanometer current control signal is transmitted to the galvanometer drive assembly, and the fourth galvanometer current control signal is used to control the galvanometer drive assembly to drive the The galvanometer deflects the second angle along the third direction with the second axis as a rotation axis;

其中，所述第一方向与所述第二方向相反，所述第三方向与所述第四方向相反，所述第二角度等于两倍的所述第一角度。Wherein, the first direction is opposite to the second direction, the third direction is opposite to the fourth direction, and the second angle is equal to twice the first angle.
根据权利要求4所述的方法，其特征在于，所述第一轴和所述第二轴垂直。The method of claim 4, wherein the first axis and the second axis are perpendicular.
根据权利要求1至5任一所述的方法，其特征在于，在投影显示每帧所述子图像的过程中，将对应所述子图像的振镜电流控制信号传输至所述振镜驱动组件，包括：The method according to any one of claims 1 to 5, wherein in the process of projecting and displaying each frame of the sub image, the galvanometer current control signal corresponding to the sub image is transmitted to the galvanometer driving assembly ,include:

在投影显示每帧所述子图像的过程中，所述光阀时序性的接收三基色光的照射，且在所述光阀接收到所述三基色光中目标基色光的照射时，将对应所述子图像的振镜电流控制信号传输至所述振镜驱动组件。In the process of projecting and displaying each frame of the sub-image, the light valve sequentially receives the illumination of the three primary colors, and when the light valve receives the illumination of the target primary color of the three primary colors, it will correspond to The galvanometer current control signal of the sub-image is transmitted to the galvanometer driving component.
根据权利要求6所述的方法，其特征在于，所述目标基色光为蓝色基色光。The method according to claim 6, wherein the target primary color light is blue primary color light.
一种投影设备，其特征在于，所述投影设备包括显示控制组件、光源、光阀、投影镜头、振镜驱动组件以及振镜，所述振镜位于所述光阀和所述投影镜头之间；A projection device, characterized in that the projection device includes a display control component, a light source, a light valve, a projection lens, a galvanometer drive assembly, and a galvanometer, the galvanometer is located between the light valve and the projection lens ；

所述显示控制组件用于：The display control component is used for:

获取多帧子图像，所述多帧子图像由待投影的目标图像分解得到，所述目标图像的分辨率大于所述光阀的分辨率，每帧所述子图像的分辨率不大于所述光阀的分辨率；Acquire multiple frames of sub-images, the multiple frames of sub-images are obtained by decomposing the target image to be projected, the resolution of the target image is greater than the resolution of the light valve, and the resolution of each frame of the sub-image is not greater than the The resolution of the light valve;

在所述光源发出的三基色光时序性的照射至所述光阀的过程中，根据每帧所述子图像中像素的基色色阶值控制所述光阀进行翻转，以将所述多帧子图像通过所述投影镜头依次投影至投影屏幕上；In the process of sequentially irradiating the light valve with the three primary colors emitted by the light source, the light valve is controlled to be inverted according to the primary color gradation value of the pixel in the sub-image of each frame, so as to turn the multi-frame Sub-images are sequentially projected onto the projection screen through the projection lens;

在投影显示每帧所述子图像的过程中，向所述振镜驱动组件传输对应所述子图像的振镜电流控制信号；In the process of projecting and displaying each frame of the sub image, transmitting the galvanometer current control signal corresponding to the sub image to the galvanometer driving assembly;

所述振镜驱动组件用于在所述振镜电流控制信号的控制下向所述振镜提供振镜驱动电流，以驱动所述振镜偏转；The galvanometer drive component is used to provide the galvanometer drive current to the galvanometer under the control of the galvanometer current control signal to drive the galvanometer to deflect;

其中，不同帧所述子图像对应的所述振镜电流控制信号不同；并且，在投影显示多帧所述子图像的过程中，所述振镜驱动电流的电流方向交替变化。Wherein, the galvanometer current control signals corresponding to the sub-images in different frames are different; and, during the process of projecting and displaying the sub-images in multiple frames, the current direction of the galvanometer driving current changes alternately.
根据权利要求8所述的投影设备，其特征在于，所述振镜包括：层叠设置的电路板和光学镜面，且所述光学镜面位于靠近所述光阀的一侧；8. The projection device according to claim 8, wherein the galvanometer lens comprises: a circuit board and an optical mirror surface arranged in a stack, and the optical mirror surface is located on a side close to the light valve;

所述电路板包括：基板以及多个线圈组；所述基板具有第一镂空区域和围绕所述第一镂空区域的第一边缘区域，所述多个线圈组位于所述第一边缘区域所述振镜驱动组件用于向每个所述线圈组提供振镜驱动电流，以驱动所述光学镜面偏转；The circuit board includes a substrate and a plurality of coil groups; the substrate has a first hollow area and a first edge area surrounding the first hollow area, and the plurality of coil groups are located in the first edge area. The galvanometer drive assembly is used to provide a galvanometer drive current to each of the coil groups to drive the deflection of the optical mirror;

所述光学镜面包括：承载板、位于所述承载板靠近所述电路板的一侧的光学玻璃和多个磁性组件，每个所述磁性组件与一个所述线圈组对应，每个所述线圈组用于在所述驱动电流的驱动下，与所述磁性组件相互作用，以驱动所述光学玻璃沿一个旋转轴转动，且不同的所述线圈组所对应的旋转轴相交；The optical mirror surface includes: a carrying plate, an optical glass located on a side of the carrying plate close to the circuit board, and a plurality of magnetic components, each of the magnetic components corresponds to one of the coil groups, and each of the coils The group is used to interact with the magnetic component under the drive of the driving current to drive the optical glass to rotate along a rotation axis, and the rotation axes corresponding to the different coil groups intersect;

其中，所述承载板具有第二镂空区域和围绕所述第二镂空区域的第二边缘区域，所述光学玻璃覆盖所述第二镂空区域，所述多个磁性组件位于所述第二边缘区域，且所述光学玻璃在所述基板上的正投影以及所述第二镂空区域在所述基板上的正投影均与所述第一镂空区域重叠，每个所述线圈组与对应的一个所述磁性组件在所述基板上的正投影重叠。Wherein, the carrier plate has a second hollow area and a second edge area surrounding the second hollow area, the optical glass covers the second hollow area, and the plurality of magnetic components are located in the second edge area , And the orthographic projection of the optical glass on the substrate and the orthographic projection of the second hollowed-out area on the substrate overlap the first hollowed-out area, and each of the coil groups is associated with a corresponding one. The orthographic projections of the magnetic components on the substrate overlap.
根据权利要求9所述的投影设备，其特征在于，每个所述线圈组包括第一线圈和第二线圈，所述第一线圈的一端与正极连接，所述第一线圈的另一端与所述第二线圈的一端连接，所述第二线圈的另一端与负极连接；每个所述磁性组件包括第一磁性组件和第二磁性组件；The projection device according to claim 9, wherein each of the coil groups includes a first coil and a second coil, one end of the first coil is connected to the positive electrode, and the other end of the first coil is connected to the One end of the second coil is connected, and the other end of the second coil is connected to the negative electrode; each of the magnetic components includes a first magnetic component and a second magnetic component;

所述第一线圈围绕第一中心区域设置，所述第一中心区域与所述第一磁性组件在所述基板上的正投影重叠；The first coil is arranged around a first central area, and the first central area overlaps with the orthographic projection of the first magnetic component on the substrate;

所述第二线圈围绕第二中心区域设置，所述第二中心区域与所述第二磁性组件在所述基板上的正投影重叠。The second coil is arranged around a second central area, and the second central area overlaps with the orthographic projection of the second magnetic component on the substrate.
根据权利要求10所述的投影设备，其特征在于，所述第一镂空区域和所述第二镂空区域均为中心对称区域；所述多个线圈组包括第一线圈组和第二线圈组，所述光学镜面包括两个所述磁性组件；10. The projection device according to claim 10, wherein the first hollowed-out area and the second hollowed-out area are both centrally symmetrical areas; the plurality of coil groups include a first coil group and a second coil group, The optical mirror includes two magnetic components;

其中，每个所述线圈组中的所述第一线圈和所述第二线圈均相对设置在所述第一镂空区域的两侧，且不同所述线圈组中的线圈位于所述第一镂空区域的不同侧。Wherein, the first coil and the second coil in each of the coil groups are oppositely arranged on both sides of the first hollow area, and the coils in the different coil groups are located in the first hollow area. Different sides of the area.
根据权利要求11所述的投影设备，其特征在于，所述基板包括第一子基板和第二子基板；每层所述子基板上均设置有第一线圈组和第二线圈组；11. The projection device according to claim 11, wherein the substrate comprises a first sub-substrate and a second sub-substrate; each layer of the sub-substrate is provided with a first coil group and a second coil group;

位于所述第一子基板中的所述第一线圈的一端与所述正极连接，位于所述第一子基板中的所述第一线圈的另一端通过第一过孔与位于所述第二子基板上的所述第一线圈的一端连接；One end of the first coil located in the first sub-substrate is connected to the anode, and the other end of the first coil located in the first sub-substrate passes through a first via hole and is connected to the second One end of the first coil on the sub-substrate is connected;

位于所述第二子基板上的所述第一线圈的另一端与位于所述第二子基板上的所述第二线圈的一端连接，位于所述第二子基板上的所述第二线圈的另一端通过第二过孔与位于所述第一子基板上的所述第二线圈的一端连接，位于所述第一子基板上的所述第二线圈的另一端与所述负极连接。The other end of the first coil located on the second sub-substrate is connected to one end of the second coil located on the second sub-substrate, and the second coil located on the second sub-substrate The other end of the second coil is connected to one end of the second coil on the first sub-substrate through a second via hole, and the other end of the second coil on the first sub-substrate is connected to the negative electrode.