WO2020007360A1

WO2020007360A1 - Waveguide-based display module, and image generation module and application thereof

Info

Publication number: WO2020007360A1
Application number: PCT/CN2019/094861
Authority: WO
Inventors: 宋海涛; 周旭东; 姚长呈; 王佳舟
Original assignee: 成都理想境界科技有限公司
Priority date: 2018-07-06
Filing date: 2019-07-05
Publication date: 2020-01-09

Abstract

Disclosed are a waveguide-based display module, and an image generation module and application corresponding thereto. Based on the principle of wavelength division multiplexing, an image generation unit modulates a mixed light beam that includes at least two groups of sub-images of different wavelengths. The mixed light beam modulated by the image generation unit is coupled into a waveguide module, which module has multiple layers of coupling-in units and multiple layers of coupling-out units, wherein each layer of coupling-in units is configured to couple in light of different wavelength ranges; and emitted images, which are formed by the coupling-out unit of the waveguide module coupling out a mixed light beam of an image to be displayed that is generated by the image generation unit, are spliced into the image to be displayed. The present invention solves the problem of taking both a large field of view and the miniaturization of a near-eye display module into consideration by means of a new idea.

Description

一种基于波导的显示模组及其图像生成模组及应用Waveguide-based display module, image generation module and application thereof

本申请要求享有于2018年7月6日提交的名称为“一种基于波导的显示模组及其图像生成模组及应用”的中国专利申请CN201810739208.3、于2018年7月6日提交的名称为“光纤扫描模组、基于波导的显示模组、近眼显示设备”的中国专利申请CN201810739825.3、于2018年7月19日提交的名称为“一种基于波导的显示模组及其图像生成模组及应用”的中国专利申请CN201810794131.X、以及于2018年9月18日提交的名称为“一种基于波导的显示模组及显示设备”的中国专利申请CN201811085823.3的优先权，其全部内容通过引用并入本文中。This application requires Chinese patent application CN201810739208.3 entitled “A waveguide-based display module and its image generation module and application” filed on July 6, 2018, and filed on July 6, 2018. Chinese patent application CN201810739825.3 entitled "Optical fiber scanning module, waveguide-based display module, and near-eye display device" and filed on July 19, 2018 under the name "A waveguide-based display module and its image Chinese patent application CN201810794131.X for generating modules and applications "and Chinese patent application CN201811085823.3 entitled" A waveguide-based display module and display device "filed on September 18, 2018, The entire contents of which are incorporated herein by reference.

技术领域Technical field

本发明涉及显示技术领域，尤其涉及一种光纤扫描模组、平板显示屏、MEMS扫描模组、基于波导的显示模组以及显示设备。The present invention relates to the field of display technology, and in particular, to an optical fiber scanning module, a flat panel display, a MEMS scanning module, a waveguide-based display module, and a display device.

背景技术Background technique

现有应用于增强现实(Augmented Reality，AR)领域的近眼显示模组，大多具有视场角做不大的问题，以现有技术中基于波导的显示模组为例：现有基于波导的显示模组一般都包括，图像源1、目镜***2、耦入光栅3、波导4和耦出光栅5，如图1所示。图像源1发出的光束经目镜***2准直后，通过耦入光栅3以一定的角度耦入到波导4中进行全反射传输，波导中对应出瞳位置设置的耦出光栅5将波导中传输的光束耦出至人眼。由于光栅是对入射角度非常敏感的元件，对于耦入光栅来说，不同角度入射光栅的光，其衍射效率和角度也不同，在特定入射角度时处具有最大衍射效率，当入射角度偏离该特定入射角度时，衍射效率会迅速下降(即光栅对此角度的入射光几乎不起衍射作用，近乎透射进光栅)，如图2所示，耦入光栅衍射效率分布曲线图中横坐标是入射到光栅的光束的角度，纵坐标是光栅的衍射效率，图中所示的光栅的有效衍射角带宽为±20°。如图3所示的光束传输图，其中，光线1表示-20°入射光的衍射光路，光线2表示0°入射光的衍射光路，光线3表示+20°入射光的衍射光路；光线1、光线2和光线3被耦入到波导内进行全反射传输后，经耦出光栅耦出波导呈现于人眼。其他角度的入射光(即超出±20°的入射光)，其衍射效率非常低，光线近乎透射过光栅不发生任何角度改变，如图中光线4所示，这束光线虽然也能在波导内全反射传输，但耦出光栅对它也不起衍射作用，它在波导里不能被耦出到人眼。因此，人眼只能观察到±20°的视场角。Most of the existing near-eye display modules applied in the field of Augmented Reality (AR) have a problem that the angle of view is not large. Take the waveguide-based display module in the prior art as an example: the existing waveguide-based display The modules generally include an image source 1, an eyepiece system 2, a coupling grating 3, a waveguide 4, and a coupling grating 5, as shown in FIG. 1. After the light beam emitted by the image source 1 is collimated by the eyepiece system 2, it is coupled to the waveguide 4 at a certain angle through the coupling grating 3 for total reflection transmission, and the coupling-out grating 5 corresponding to the exit pupil position in the waveguide is transmitted in the waveguide. The light beam is coupled out to the human eye. Since the grating is a very sensitive element to the incident angle, for the light coupled into the grating, the diffraction efficiency and angle of light entering the grating at different angles are also different. It has the maximum diffraction efficiency at a specific incident angle. When the incident angle deviates from that specific At the angle of incidence, the diffraction efficiency will decrease rapidly (that is, the grating has almost no diffraction effect on the incident light at this angle, and is almost transmitted into the grating). As shown in Figure 2, the abscissa of the diffraction efficiency distribution curve coupled to the grating is incident on The angle of the beam of the grating, the ordinate is the diffraction efficiency of the grating, and the effective diffraction angular bandwidth of the grating shown in the figure is ± 20 °. As shown in the light beam transmission diagram in FIG. 3, Ray 1 represents a diffracted optical path of -20 ° incident light, Ray 2 represents a diffracted optical path of 0 ° incident light, and Ray 3 represents a diffracted optical path of + 20 ° incident light; Ray 1, After the light rays 2 and 3 are coupled into the waveguide for total reflection transmission, they are presented to the human eye through the coupling-out grating and the waveguide. Incident light at other angles (that is, incident light exceeding ± 20 °) has a very low diffraction efficiency, and the light is almost transmitted through the grating without any angle change. As shown in light 4 in the figure, this light can also be in the waveguide. Total reflection transmission, but the decoupling grating does not diffract it, it cannot be coupled out to the human eye in the waveguide. Therefore, the human eye can only observe a field angle of ± 20 °.

在中国专利CN107024769，中我们可以看到，现有技术已经想到了运用拼接方式来扩大视场角，这种拼接方式每增加拼接一组视场角即需要增加一组对应的输入光源模组，属于硬件堆砌型拼接，该拼接方案使得近眼显示模组的体积无法实现小型化。In Chinese patent CN107024769, we can see that the prior art has thought of using the stitching method to expand the field of view angle. This stitching method requires adding a corresponding set of input light source modules for each additional set of field angles. It belongs to hardware stacking splicing. This splicing scheme makes the volume of the near-eye display module unable to be miniaturized.

如何解决近眼显示模组大视场和小型化兼顾问题，是本领域亟待解决的技术问题。How to solve both the large field of view and the miniaturization of the near-eye display module is a technical problem to be solved in this field.

发明内容Summary of the invention

本发明的目的是基于一种全新思路，提出一系列基于波导的显示模组，及其对应的图像生成模组，解决近眼显示模组大视场和小型化兼顾问题。The object of the present invention is to propose a series of waveguide-based display modules and their corresponding image generating modules based on a completely new idea, so as to solve the problems of large field of view and miniaturization of the near-eye display module.

为了实现上述发明目的，本发明提供了一种光纤扫描模组，包括光纤扫描器和输入光源，光纤扫描器包括至少一根扫描光纤；一路所述输入光源包括N组光源，每组光源至少包括R、G、B三种发光单元，所述N组光源中相同色彩通道的发光单元被配置为发射不同波长的光，N为大于等于2的整数。In order to achieve the above-mentioned object of the present invention, the present invention provides a fiber scanning module including a fiber scanner and an input light source. The fiber scanner includes at least one scanning fiber; one input light source includes N groups of light sources, and each group of light sources includes at least Three kinds of light-emitting units of R, G, and B. The light-emitting units of the same color channel in the N groups of light sources are configured to emit light of different wavelengths, and N is an integer greater than or equal to 2.

优选的，一路所述输入光源中的N组光源产生的光线，经合束后输入所述光纤扫描器中的一根扫描光纤中。Preferably, light rays generated by N groups of light sources among the input light sources are combined and input into one scanning optical fiber in the optical fiber scanner.

优选的，一根扫描光纤对应一路输入光源，当光纤扫描器包含两根以上扫描光纤时，每根扫描光纤对应的输入光源波长配置相同。Preferably, one scanning optical fiber corresponds to one input light source. When the optical fiber scanner includes two or more scanning optical fibers, the wavelength configuration of the input light source corresponding to each scanning optical fiber is the same.

优选的，一路所述输入光源中的N组光源为N组激光管光源或N组LED光源。Preferably, the N group light sources in the input light source are N group laser tube light sources or N group LED light sources.

优选的，所述N等于2。Preferably, N is equal to two.

相应的，本发明还提供了一种平板显示屏，所述平板显示屏的每个像素包括至少两组子像素，每组子像素包括R、G、B三个色彩单元，各组子像素中的相同色彩单元采用不同波长。Correspondingly, the present invention also provides a flat panel display. Each pixel of the flat panel display includes at least two groups of sub-pixels, and each group of sub-pixels includes three color units of R, G, and B. The same color unit uses different wavelengths.

优选的，所述平板显示屏为液晶显示屏LCD、有机发光二级管OLED显示屏、液晶硅LCOS显示屏、DLP显示屏中的一种。Preferably, the flat panel display is one of a liquid crystal display LCD, an organic light emitting diode OLED display, a liquid crystal silicon LCOS display, and a DLP display.

相应的，本发明还提供了一种MEMS扫描模组，包括MEMS扫描器和发光光源，所述发光光源包括N组光源，每组光源至少包括R、G、B三种发光单元，所述N组光源中相同色彩通道的发光单元被配置为发射不同波长的光，N为大于等于2的整数。Correspondingly, the present invention also provides a MEMS scanning module including a MEMS scanner and a light emitting light source. The light emitting light source includes N groups of light sources, and each group of light sources includes at least three light emitting units of R, G, and B. The N The light emitting units of the same color channel in the group of light sources are configured to emit light of different wavelengths, and N is an integer greater than or equal to two.

优选的，所述N组光源出射的光线合束后射向所述MEMS扫描器。Preferably, the light beams emitted from the N sets of light sources are combined and emitted to the MEMS scanner.

优选的，所述发光光源中的N组光源为N组激光管光源或N组LED光源。Preferably, the N group light sources in the light emitting light source are N group laser tube light sources or N group LED light sources.

相应的，本发明还提供了一种基于波导的显示模组，包括：Accordingly, the present invention also provides a waveguide-based display module, including:

图像分割单元，用于将待显示图像分割为M个子图像，M为大于等于2的整数；An image segmentation unit, configured to segment an image to be displayed into M sub-images, where M is an integer greater than or equal to 2;

图像产生单元，包括一个或多个图像产生子单元，当图像产生单元包含至少两个图像产生子单元时，各图像产生子单元发光波长配置相同；每个所述图像产生子单元通过波分复用的方式调制出N个子图像的混合光束，每个所述图像产生子单元所产生的N个子图像光束中的相同色彩光束具有不同波长，N为大于等于2的整数；所述图像产生单元通过一个或多个图像产生子单元将所述M个子图像同时调制射出，经准直光学***准直后形成包含M个子图像光束的待显示图像混合光束；An image generation unit includes one or more image generation sub-units. When the image generation unit includes at least two image generation sub-units, the light emission wavelength configuration of each image generation sub-unit is the same; each of the image generation sub-units undergoes wavelength division multiplexing. A mixed light beam of N sub-images is modulated in a manner, and the same color light beams in the N sub-image light beams produced by each of the image generation sub-units have different wavelengths, and N is an integer greater than or equal to 2; the image generation unit passes One or more image generating sub-units modulating and outputting the M sub-images at the same time, and collimating through a collimating optical system to form a mixed light beam to be displayed including M sub-image light beams;

波导模组，设置在所述图像产生单元的出光光路上，波导模组具有多层耦入单元和多层耦出单元，每层耦入单元被配置为耦入不同波长范围的光，所述图像产生单元产生的待显示图像混合光束经波导模组耦出单元耦出后的出射图像拼接为所述待显示图像。The waveguide module is disposed on the light output optical path of the image generating unit. The waveguide module has a multi-layer coupling unit and a multi-layer coupling unit. Each coupling unit is configured to couple light of different wavelength ranges. The mixed image of the to-be-displayed image generated by the image generation unit is spliced into the to-be-displayed image after being coupled out by the waveguide module coupling unit.

优选的，当所述图像产生单元通过多个图像产生子单元将所述M个子图像同时调制射出时，多个图像产生子单元的光束在入射到波导模组前相互拼接。Preferably, when the image generating unit modulates and emits the M sub-images through multiple image generating sub-units at the same time, the light beams of the multiple image generating sub-units are spliced to each other before entering the waveguide module.

一种优选方式为：当每个子图像由R、G、B三种发光单元调制时，所述波导模组包括3*N层耦入单元和3*N层耦出单元，除最后一层耦入单元外，其他每层耦入单元被分别配置成只耦入待显示图像混合光束中一个波长的光束，所述耦入单元为反射式光栅或滤光片。A preferred method is: when each sub-image is modulated by three light emitting units of R, G, and B, the waveguide module includes a 3 * N layer coupling unit and a 3 * N layer coupling unit, except for the last layer coupling In addition to the input unit, the other coupling units of each layer are respectively configured to couple only one wavelength of the mixed light beam of the image to be displayed, and the coupling unit is a reflective grating or a filter.

另一种优选方式为：所述波导模组包括N层堆叠设置的波导基片，当每个子图像由R、G、B三种发光单元调制时，除所述N层堆叠设置的波导基片的最后一层耦入单元外，其他每层波导基片的耦入单元为滤光片，每片滤光片被设计为反射对应子图像光束的RGB三波段光且透射其他波段光。Another preferred mode is that the waveguide module includes N-layer stacked waveguide substrates, and when each sub-image is modulated by three types of light-emitting units of R, G, and B, except for the N-layer stacked waveguide substrates, In addition to the last layer of the coupling unit, the coupling units of each other layer of the waveguide substrate are filters, and each filter is designed to reflect the RGB three-band light corresponding to the sub-image beam and transmit the other band light.

另一种优选方式为：当每个子图像由R、G、B三种发光单元调制时，所述波导模组包括3*N层耦入单元和3*N层耦出单元，除最后一层耦入单元外，其他耦入单元均采用长波通滤光片或短波通滤光片；当耦入单元均采用长波通滤光片时，第一层耦入单元至倒数第二层耦入单元的长波通滤光片的截止波长逐渐升高，当耦入单元均采用短波通滤光片时，第一层耦入单元至倒数第二层耦入单元的短波通滤光片的截止波长逐渐降低；每层耦入单元只耦入待显示图像混合光束中一个波长的光束。Another preferred method is: when each sub-image is modulated by three light emitting units of R, G, and B, the waveguide module includes a 3 * N layer coupling unit and a 3 * N layer coupling unit, except for the last layer In addition to the coupling unit, other coupling units use long-pass filters or short-pass filters; when the coupling units use long-pass filters, the first-layer coupling unit to the penultimate-layer coupling unit The cut-off wavelength of the long-pass filter is gradually increasing. When the coupling units are all short-pass filters, the cut-off wavelength of the short-pass filter of the first-layer coupling unit to the penultimate-layer coupling unit is gradually increasing. Decrease; each layer of the coupling unit is only coupled to a beam of one wavelength in the mixed beam of the image to be displayed.

优选的，所述耦出单元为耦出光栅或耦出反射镜阵列。Preferably, the decoupling unit is a decoupling grating or a decoupling mirror array.

优选的，所述每组波导模组中均设置有中继单元，用于沿垂直于耦出单元的扩瞳方向的方向扩瞳。Preferably, a relay unit is provided in each group of the waveguide modules for dilating pupils in a direction perpendicular to the dilation direction of the coupling-out unit.

优选的，所述图像分割单元分割出的多个子图像中相邻子图像具有相同图像区域。Preferably, adjacent sub-images in the multiple sub-images segmented by the image segmentation unit have the same image area.

优选的，所述图像产生单元为前述的光纤扫描模组。Preferably, the image generating unit is the aforementioned fiber scanning module.

优选的，所述图像产生子单元为前述的平板显示屏，或前述的MEMS扫描模组。Preferably, the image generating sub-unit is the aforementioned flat panel display or the aforementioned MEMS scanning module.

相应的，本发明还提出一种显示设备，包括至少一组前述基于波导的显示模组。Accordingly, the present invention also provides a display device including at least one set of the aforementioned waveguide-based display module.

与现有技术相比，本发明具有如下有益效果：Compared with the prior art, the present invention has the following beneficial effects:

本发明采用了一种全新思路解决近眼显示模组大视场和小型化兼顾问题，本发明提出的光纤扫描模组、平板显示屏、MEMS扫描模组，以及基于波导的显示模组采用了波分复用方式，在实现同样分辨率同样视场角的情况下，扫描光纤数量可减少，有利于近眼显示设备的小型化生产。The present invention adopts a new idea to solve the problem of considering both the large field of view and the miniaturization of the near-eye display module. The optical fiber scanning module, the flat panel display, the MEMS scanning module and the waveguide-based display module proposed by the present invention use waves. In the division multiplexing method, under the condition that the same resolution and the same field of view are achieved, the number of scanning fibers can be reduced, which is beneficial to the miniaturization production of near-eye display devices.

附图说明BRIEF DESCRIPTION OF THE DRAWINGS

为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术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发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图：In order to more clearly explain the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative labor:

图1为现有技术中增强现实领域近眼显示模组的示意图；1 is a schematic diagram of a near-eye display module in the field of augmented reality in the prior art;

图2为图1所示近眼显示模组的耦入光栅衍射效率分布曲线图；FIG. 2 is a graph of the diffraction efficiency distribution of the coupled grating of the near-eye display module shown in FIG. 1; FIG.

图3为图1所示近眼显示模组中不同角度光束的传输路径图；3 is a transmission path diagram of light beams at different angles in the near-eye display module shown in FIG. 1;

图4A为本发明实施例公开的一种光纤扫描模组的结构示意图；4A is a schematic structural diagram of a fiber scanning module disclosed in an embodiment of the present invention;

图4B为本发明实施例公开的另一种光纤扫描模组的结构示意图；4B is a schematic structural diagram of another fiber scanning module disclosed in an embodiment of the present invention;

图4C为本发明实施例公开的另一种光纤扫描模组的结构示意图；4C is a schematic structural diagram of another fiber scanning module disclosed in an embodiment of the present invention;

图5为本发明实施例公开的一种基于波导的显示模组的结构示意图；5 is a schematic structural diagram of a waveguide-based display module according to an embodiment of the present invention;

图6A为本发明实施例公开的另一种基于波导的显示模组的结构示意图；6A is a schematic structural diagram of another waveguide-based display module according to an embodiment of the present invention;

图6B为图6A所示的显示模组的R1耦入单元的一种反射效率示意图；6B is a schematic diagram of a reflection efficiency of the R1 coupling unit of the display module shown in FIG. 6A;

图6C为图6A所示的显示模组中的波导模组的一种结构示意图；6C is a schematic structural diagram of a waveguide module in the display module shown in FIG. 6A;

图6D为图6A所示的显示模组中的波导模组的另一种结构示意图；6D is another schematic structural diagram of a waveguide module in the display module shown in FIG. 6A;

图6E为图6A所示的显示模组中的波导模组的另一种结构示意图；6E is another schematic structural diagram of a waveguide module in the display module shown in FIG. 6A;

图6F为图6A所示的显示模组中的B2耦入单元的一种反射效率示意图；6F is a schematic diagram of a reflection efficiency of the B2 coupling unit in the display module shown in FIG. 6A;

图7A为本发明实施例公开的再一种基于波导的显示模组的结构示意图；7A is a schematic structural diagram of still another waveguide-based display module according to an embodiment of the present invention;

图7B为图7A所示的显示模组的滤光片的反射效率图；7B is a reflection efficiency diagram of a filter of the display module shown in FIG. 7A;

图8为本发明实施例公开的另一种基于波导的显示模组的结构示意图；8 is a schematic structural diagram of another waveguide-based display module according to an embodiment of the present invention;

图9A为本发明实施例公开的一种平板显示屏的结构示意图；FIG. 9A is a schematic structural diagram of a flat panel display according to an embodiment of the present invention; FIG.

图9B为本发明实施例公开的另一种平板显示屏的结构示意图；FIG. 9B is a schematic structural diagram of another flat panel display according to an embodiment of the present invention; FIG.

图10为本发明实施例公开的一种基于波导的显示模组的又一结构示意图；FIG. 10 is another schematic structural diagram of a waveguide-based display module according to an embodiment of the present invention; FIG.

图11A为本发明实施例公开的一种MEMS扫描模组的结构示意图；11A is a schematic structural diagram of a MEMS scanning module disclosed in an embodiment of the present invention;

图11B为本发明施例公开的另一种MEMS扫描模组的结构示意图；11B is a schematic structural diagram of another MEMS scanning module disclosed in an embodiment of the present invention;

图12为本发明实施例公开的一种基于波导的显示模组的又一结构示意图。FIG. 12 is another schematic structural diagram of a waveguide-based display module according to an embodiment of the present invention.

图13为本发明实施例公开的另一种基于波导的显示模组的结构示意图；13 is a schematic structural diagram of another waveguide-based display module according to an embodiment of the present invention;

图14为本发明实施例公开的另一种基于波导的显示模组的结构示意图；14 is a schematic structural diagram of another waveguide-based display module according to an embodiment of the present invention;

图15为图13中光束分离器结构示意图一；FIG. 15 is a first structural schematic diagram of the beam splitter in FIG. 13; FIG.

图16为图13中光束分离器结构示意图二；FIG. 16 is a second structural diagram of the beam splitter in FIG. 13; FIG.

图17为图13中光束分离器结构示意图三。FIG. 17 is a third structural diagram of the beam splitter in FIG. 13.

具体实施方式detailed description

下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

本发明基于波分复用的思维，提出一系列基于波导的显示模组，及其对应的图像生成模组及其应用。Based on the thinking of wavelength division multiplexing, the present invention proposes a series of waveguide-based display modules, their corresponding image generation modules and their applications.

基于波导的显示模组，主要包括图像分割单元、图像产生单元和波导模组，其中所述图像分割单元用于将待显示图像分割为M个子图像，M为大于等于2的整数；所述图像产生单元包括一个或多个图像产生子单元，当图像产生单元包含至少两个图像产生子单元时，各图像产生子单元发光波长配置相同；每个所述图像产生子单元通过波分复用的方式调制出N个子图像的混合光束，每个所述图像产生子单元所产生的N个子图像光束中的相同色彩光束具有不同波长，N为大于等于2的整数；所述图像产生单元通过一个或多个图像产生子单元将所述M个子图像同时调制射出，经准直光学***准直后形成包含M个子图像光束的待显示图像混合光束；所述波导模组，设置在所述图像产生单元的出光光路上，波导模组具有多层耦入单元和多层耦出单元，每层耦入单元被配置为耦入不同波长范围的光，耦出单元的位置，则根据耦入单元耦入光情况进行对应设置，耦入单元与耦出单元配合在一起，使所述图像产生单元产生的待显示图像混合光束经波导模组耦出单元耦出后的出射图像拼接为所述待显示图像。A waveguide-based display module mainly includes an image segmentation unit, an image generation unit, and a waveguide module, wherein the image segmentation unit is used to segment an image to be displayed into M sub-images, where M is an integer greater than or equal to 2; the image The generation unit includes one or more image generation sub-units. When the image generation unit includes at least two image generation sub-units, the emission wavelength configuration of each image generation sub-unit is the same; each of the image generation sub-units is wavelength-multiplexed. A mixed light beam of N sub-images is modulated in a manner that the same color light beams in the N sub-image light beams produced by each of the image generation sub-units have different wavelengths, and N is an integer greater than or equal to 2; the image generation unit passes one or A plurality of image generating sub-units modulate and emit the M sub-images at the same time, and after collimating by a collimating optical system, a mixed light beam to be displayed including M sub-image light beams is formed; and the waveguide module is disposed in the image generating unit. The waveguide module has a multilayer coupling unit and a multilayer coupling unit, and each coupling unit is configured as: Light coupled in different wavelength ranges and the position of the coupling-out unit are set correspondingly according to the coupling-in light of the coupling-in unit. The coupling-in unit and the coupling-out unit are matched together to mix the images to be displayed generated by the image generation unit. The outgoing image after the light beam is coupled out by the waveguide module coupling unit is stitched into the image to be displayed.

本发明实施例中，所述图像产生单元，可以为基于特殊结构的光纤扫描模组，也可以为基于特殊结构的MEMS扫描模组或基于特殊结构的平板显示屏等，只要发光光源能采用波分复用的方式，在发出的同一个像素光点中包含多个子图像的多个像素光信息均可作为本发明实施例中的图像产生单元。In the embodiment of the present invention, the image generating unit may be an optical fiber scanning module based on a special structure, or a MEMS scanning module based on a special structure or a flat panel display based on a special structure, as long as the light source can use a wave In the manner of demultiplexing, multiple pieces of pixel light information including multiple sub-images in the same pixel light spot sent out can be used as the image generating unit in the embodiment of the present invention.

下面，我们将结合附图用若干个实施例组，来介绍本发明方案。介绍过程中，为了说明书重复部分不至于过多，对于常见的几种图像产生单元，我们会单独依次介绍；对于基于波导的显示模组，虽然涉及多个实施例组，但由于仅仅是图像产生单元发生变化，我们以其中一个实施例组作为详细介绍(选以光纤扫描模组作为图像源的实施例组进行详细介绍)，其他实施例组中未详细介绍的部分，参照该实施例介绍内容。In the following, we will introduce the solution of the present invention by using several embodiments in combination with the drawings. In the introduction process, in order to avoid too many repetitive parts of the description, we will introduce several common image generation units in turn. For the waveguide-based display module, although it involves multiple embodiment groups, it is only an image generation. The unit has changed. We will take one of the embodiments as a detailed introduction (select the embodiment group that uses a fiber-optic scanning module as the image source for detailed introduction). For the parts in the other embodiments that are not described in detail, refer to the content of this embodiment. .

光纤扫描模组实施例：Optical fiber scanning module embodiment:

本发明实施例公开了一种光纤扫描模组，包括光纤扫描器和输入光源。其中，光纤扫描器包括至少一根扫描光纤，这里的光纤扫描器包括至少一个制动器(比如压电制动器)，每个制动器驱动一根或多根扫描光纤；一根扫描光纤对应一路输入光源，这里的输入光源可以是激光光源或发光二极管LED等其他光源；一路所述输入光源包括N组光源，每组光源至少包括R、G、B三种发光单元，其中一种发光单元可以包括多个发光器，比如R发光单元可以是通过R’和R”两个发光器混光形成的，每一种发光单元包括多种发光器时，可提升光能量。优选的，当光纤扫描器包含两根以上扫描光纤时，每根扫描光纤对应的输入光源波长配置相同。An embodiment of the present invention discloses a fiber scanning module, which includes a fiber scanner and an input light source. The fiber scanner includes at least one scanning fiber. The fiber scanner here includes at least one brake (such as a piezoelectric brake), and each brake drives one or more scanning fibers. One scanning fiber corresponds to one input light source. Here, The input light source can be other light sources such as a laser light source or a light emitting diode LED; the input light source includes N groups of light sources, and each group of light sources includes at least three types of light emitting units: R, G, and B. One of the light emitting units may include multiple light sources. For example, the R light emitting unit may be formed by mixing two light emitters, R ′ and R ″. When each light emitting unit includes multiple light emitters, the light energy may be increased. Preferably, when the fiber scanner includes two When scanning the optical fiber above, the wavelength configuration of the input light source corresponding to each scanning fiber is the same.

图4A以光纤扫描模组100包括一个制动器110，该制动器110驱动一根扫描光纤111为例。图4A中，一路输入光源包括N组激光光源120，每组激光光源包括R、G、B三个单色激光器(R、G、B三个单色激光器分别指红光激光器、绿光激光器和蓝光激光器)， N组激光光源中相同色彩通道的N个单色激光器被配置为发射不同波长的光；N组激光光源产生的光线输入光纤扫描器100中的一根扫描光纤111中，N为大于等于2的整数。其中，N组激光光源中产生的光线优选经合束后输入光纤扫描器中的一根扫描光纤中。合束可以是单组激光光源中的R、G、B三个单色激光器分别产生的红光、绿光和蓝光合束，也可以是N组激光光源所有光的合束，或前述两种合束同时包含，在此不做限制。FIG. 4A shows that the optical fiber scanning module 100 includes a brake 110 that drives a scanning optical fiber 111 as an example. In FIG. 4A, one input light source includes N groups of laser light sources 120, and each group of laser light sources includes three monochromatic lasers of R, G, and B (the three monochromatic lasers of R, G, and B respectively refer to red lasers, green lasers, and Blue laser), N monochromatic lasers of the same color channel in the N group of laser light sources are configured to emit light of different wavelengths; the light generated by the N group of laser light sources is input into a scanning fiber 111 in a fiber scanner 100, and N is An integer greater than or equal to 2. Among them, the light generated in the N groups of laser light sources is preferably combined into a scanning fiber in a fiber scanner. The beam combining can be the combination of the red, green, and blue light generated by the three monochromatic lasers of R, G, and B in a single group of laser light sources, or the combining of all the lights of the N group of laser light sources, or the two aforementioned. Combination is included at the same time, and there is no limitation here.

N组激光光源中相同色彩通道的N个单色激光器被配置为发射不同波长的光，以红光单色激光器为例，如图4A所示的R1单色激光器、R2单色激光器……Rn单色激光器虽然都产生红光，但产生的是不同波长的红光。同样地，G1单色激光器、G2单色激光器……Gn单色激光器虽然都产生绿光，但产生的是不同波长的绿光；B1单色激光器、B2单色激光器……Bn单色激光器虽然都产生蓝光，但产生的是不同波长的蓝光。N monochromatic lasers of the same color channel in the N group of laser light sources are configured to emit light of different wavelengths. Taking a red monochromatic laser as an example, as shown in FIG. 4A, the R1 monochromatic laser, the R2 monochromatic laser ... Rn Although monochromatic lasers all produce red light, they produce red light of different wavelengths. Similarly, G1 monochrome laser, G2 monochrome laser ... Although Gn monochrome lasers all produce green light, they produce green light of different wavelengths; B1 monochrome laser, B2 monochrome laser ... Both produce blue light, but produce blue light of different wavelengths.

下面我们以一路输入光源包括2组激光光源为例，如图4B所示的光纤扫描模组200，其输入光源220包括2组激光光源221和222，第一组激光光源221包括R1、G1、B1三个单色激光器，第二组激光光源222包括R2、G2、B2三个单色激光器，两组激光光源中色彩通道相同的两个单色激光器中心波长值相差范围优选在5nm～30nm之间，例如，图4B中，各激光器的波长可配置为如下方式：红光激光器R1的出射波长为650nm，绿光激光器G1的出射波长为530nm，蓝光激光器B1的出射波长为460nm；红光激光器R2的出射波长为635nm，绿光激光器G2的出射波长为520nm，蓝光激光器B2的出射波长为450nm。两组激光光源221和222均输入到光纤扫描器210中的扫描光纤211中，如此，扫描光纤211所扫描的每一个像素点都携带有第一组激光光源221和第二组激光光源222所出射的两部分光信息。In the following, we take an input light source including two groups of laser light sources as an example. As shown in FIG. 4B, the optical fiber scanning module 200 includes two sets of laser

light sources

221 and 222, and the first group of laser light sources 221 includes R1, G1. Three monochromatic lasers of B1. The second group of laser light sources 222 includes three monochromatic lasers of R2, G2, and B2. The difference between the center wavelength values of the two monochromatic lasers with the same color channel in the two sets of laser light sources is preferably between 5nm and 30nm. For example, in FIG. 4B, the wavelength of each laser can be configured as follows: the output wavelength of the red laser R1 is 650 nm, the output wavelength of the green laser G1 is 530 nm, and the output wavelength of the blue laser B1 is 460 nm; the red laser The emission wavelength of R2 is 635 nm, the emission wavelength of green laser G2 is 520 nm, and the emission wavelength of blue laser B2 is 450 nm. The two sets of laser

light sources

221 and 222 are input into the scanning fiber 211 in the fiber scanner 210. In this way, each pixel scanned by the scanning fiber 211 carries a first group of laser light sources 221 and a second group of laser light sources 222. The two parts of the emitted light information.

图4C以光纤扫描器300包括3个制动器310、320和330，制动器310、320和330分别驱动一根扫描光纤311、321和331为例。图中的输入光源340包括6组激光光源341-346。其中，激光光源341和342产生的光束都输入到制动器310所驱动的扫描光纤311中，激光光源343和344产生的光束都输入到制动器320所驱动的扫描光纤321中，激光光源345和346产生的光束都输入到制动器330所驱动的扫描光纤331中。其中，激光光源341包括R1、G1、B1三个单色激光器，激光光源342包括R2、G2、B2三个单色激光器，两组激光光源中色彩通道相同的两个单色激光器发射波长不同的光。其他扫描光纤321和331对应的输入光源波长配置与扫描光纤311相同。FIG. 4C shows that the fiber scanner 300 includes three

actuators

310, 320, and 330, and the

actuators

310, 320, and 330 drive one

scanning fiber

311, 321, and 331, respectively. The input light source 340 in the figure includes six groups of laser light sources 341-346. Among them, the light beams generated by the

laser light sources

341 and 342 are input into the scanning fiber 311 driven by the brake 310, and the light beams generated by the

laser light sources

343 and 344 are input into the scanning fiber 321 driven by the brake 320, and the

laser light sources

345 and 346 are generated The light beams are all input into the scanning fiber 331 driven by the brake 330. Among them, the laser light source 341 includes three monochromatic lasers of R1, G1, and B1, and the laser light source 342 includes three monochromatic lasers of R2, G2, and B2. The two monochromatic lasers with the same color channel in the two sets of laser light sources have different emission wavelengths. Light. The wavelength configuration of the input light sources corresponding to the

other scanning fibers

321 and 331 is the same as that of the scanning fiber 311.

基于波导的显示模组的第一组实施例(图像产生单元为光纤扫描模组)：The first group of embodiments of the waveguide-based display module (the image generating unit is a fiber-optic scanning module):

本发明实施例还公开了一种基于波导的显示模组，其包括：图像分割单元、图像产生单元和波导模组，其中：An embodiment of the present invention also discloses a waveguide-based display module, which includes an image segmentation unit, an image generation unit, and a waveguide module, wherein:

图像分割单元，用于将待显示图像分割为M个子图像，M为大于等于2的整数；所述M个子图像可以理解为M个不同视场角子图像。An image segmentation unit is configured to segment an image to be displayed into M sub-images, where M is an integer greater than or equal to 2; the M sub-images can be understood as M sub-images with different field angles.

图像产生单元，所述图像产生单元为前述光纤扫描模组实施例中的光纤扫描模组，所述光纤扫描模组通过波分复用的方式为一根扫描光纤调制出包含N个子图像的混合光束，N为大于等于2的整数；所述光纤扫描模组通过一根或多根扫描光纤将所述M个子图像同时调制射出，经准直光学***后形成待显示图像混合光束。当光纤扫描模组通过一根扫描光纤将所述M个子图像同时调制射出时，M＝N；当光纤扫描模组通过多根扫描光纤将所述M个子图像同时调制射出时M＞N。准直光学***可以是单独模组，放在发光单元出光路上，也可以将准直***封装到光纤扫描模组中，在此不做限制。An image generating unit, which is the fiber scanning module in the foregoing embodiment of the fiber scanning module, and the fiber scanning module uses a wavelength division multiplexing method to modulate a mixture including N sub-images for one scanning fiber. Light beam, N is an integer greater than or equal to 2. The fiber scanning module modulates and emits the M sub-images through one or more scanning fibers at the same time, and forms a mixed light beam to be displayed after collimating the optical system. When the fiber scanning module modulates and emits the M sub-images through one scanning fiber at the same time, M = N; when the fiber scanning module modulates and ejects the M sub-images through multiple scanning fibers at the same time, M> N. The collimating optical system can be a separate module placed on the light emitting path of the light emitting unit, or the collimating system can be packaged in a fiber scanning module, which is not limited here.

波导模组，设置在所述图像产生单元的出光光路上，波导模组具有多层耦入单元和多层耦出单元，每层耦入单元被配置为耦入不同波长范围的光，所述图像产生单元产生的待显示图像混合光束经波导模组耦出单元耦出后的出射图像拼接为所述待显示图像。由于当光纤扫描器包含两根以上扫描光纤时，每根扫描光纤对应的输入光源波长配置相同，因此多根光纤可共用波导模组。The waveguide module is disposed on the light output optical path of the image generating unit. The waveguide module has a multi-layer coupling unit and a multi-layer coupling unit. Each coupling unit is configured to couple light of different wavelength ranges. The mixed image of the to-be-displayed image generated by the image generation unit is spliced into the to-be-displayed image after being coupled out by the waveguide module coupling unit. When the fiber scanner includes more than two scanning fibers, the wavelength configuration of the input light source corresponding to each scanning fiber is the same, so multiple fibers can share the waveguide module.

所述波导模组在不同的实施例中可以设计为不同形态，例如，波导模组可以是包括多层堆叠设置的波导，也可以是一个或多个波导内设置多层耦入和耦出单元，本发明实施例对波导模组形态不做具体限制，后续实施例中，会选择几种具体形态进行举例。波导模组的作用就是将图像产生单元产生的混频光束中的各子图像分离出来，且耦出拼接为所述待显示图像即可。The waveguide module may be designed in different forms in different embodiments. For example, the waveguide module may be a waveguide including a multilayer stack, or a multilayer coupling and decoupling unit provided in one or more waveguides. In the embodiment of the present invention, the shape of the waveguide module is not specifically limited. In the following embodiments, several specific forms will be selected as examples. The role of the waveguide module is to separate the sub-images in the mixed light beam generated by the image generation unit, and couple and splice them into the image to be displayed.

图5实施例以光纤扫描模组通过一根扫描光纤将所述M个子图像同时调制射出为例，此时，M＝N，即图5中，图像分割单元将待显示图像分割为N个子图像，一个子图像为一个视场角子图像；一根扫描光纤对应的一路输入光源包括N组激光光源，每组激光光源包括R、G、B三个单色激光器，每组激光光源分别对应调制上述N个不同视场角子图像中的一个视场角子图像，即，第一激光光源对应调制第一视场角子图像，第二激光光源对应调制第二视场角子图像……第N激光光源对应调制第N视场角子图像，由此，图5中单根扫描光纤输出的每一个像素点都携带有N个不同视场角子图像的像素信息，经扫描光纤出射的混合图像光束准直后被耦入到波导模组中。图5中，波导模组以3*N层堆叠设置的波导为例，每层波导被配置为只耦入一个单色激光器输出光束，比如，第一层波导只耦入第一组激光光源中红色激光器R1产生的光束，第二层波导只耦入第一组激光光源中绿色激光器G1产生的光束，第三层波导只耦入第一组激光光源中绿色激光器B1产生的光束……以此类推，每个单色激光器对应一层波导。当然前述对应方式仅为举例，每个单色激光器对应一层波导即可，波导的摆位顺序无限制，只要每层波导能设计为只耦入一个单色激光器输出光束即可。波导的耦入单元和耦出单元，在本实施例组后续实施例中结合附图6A、6C、6D和7A进行介绍，N个视场角子图像光束在各自的波导基片传输后耦出拼接成上述待显示图像。如此，相当于能看到N个视场角的图像，拓宽了显示模组的视场角。The embodiment of FIG. 5 uses an optical fiber scanning module to modulate and emit the M sub-images through one scanning fiber as an example. At this time, M = N, that is, in FIG. 5, the image segmentation unit divides the image to be displayed into N sub-images. A sub-image is a field-of-view sub-image; one input light source corresponding to a scanning fiber includes N groups of laser light sources, each group of laser light sources includes three monochromatic lasers of R, G, and B, and each group of laser light sources respectively modulates the foregoing One of the N different field angle sub-images, that is, the first laser light source corresponds to modulating the first field angle sub-image, and the second laser light source corresponds to modulating the second field angle sub-image ... The Nth laser light source corresponds to modulation The N-th field of view sub-image. Therefore, each pixel output by a single scanning fiber in FIG. 5 carries pixel information of N different field-of-view sub-images. The mixed image beams emitted by the scanning fiber are collimated and coupled. Into the waveguide module. In Figure 5, the waveguide module uses 3 * N stacked waveguides as an example. Each layer of the waveguide is configured to couple only one monochromatic laser output beam. For example, the first layer of waveguides is only coupled to the first group of laser light sources. For the beam generated by the red laser R1, the second layer waveguide is only coupled to the beam generated by the green laser G1 in the first group of laser light sources, and the third layer waveguide is coupled only to the beam generated by the green laser B1 in the first group of laser light sources ... By analogy, each monochromatic laser corresponds to a layer of waveguide. Of course, the foregoing corresponding method is only an example, and each monochromatic laser corresponds to one layer of waveguide, and the order of placing the waveguide is not limited, as long as each layer of the waveguide can be designed to be coupled to only one monochromatic laser output beam. The waveguide coupling-in unit and the coupling-out unit are described in the subsequent embodiments of this embodiment group with reference to FIGS. 6A, 6C, 6D, and 7A. N field-of-view sub-image beams are coupled and spliced after being transmitted by the respective waveguide substrates. Into the image to be displayed. In this way, it is equivalent to being able to see an image of N viewing angles, which widens the viewing angle of the display module.

另外，设待显示图像有1000个像素点，按照现有技术方式(即未采用部分复用的时候)，通过一根扫描光纤进行扫描，则该扫描光纤需要扫描1000个像素点；而按照本发明思路将待显示图像分割成N个视场角子图像后，假如N个视场角子图像具有相同数量的像素点，N个视场角子图像光束采用波分复用的方式混合输入到同一扫描光纤中，则这根光纤只需要扫描1000/N个像素点就行了，如此便提高了图像的刷新率。In addition, suppose that the image to be displayed has 1000 pixels. According to the prior art method (that is, when partial multiplexing is not used), scanning is performed by using a scanning fiber, and the scanning fiber needs to scan 1000 pixels. Inventive idea: After the image to be displayed is divided into N field of view sub-images, if the N field of view sub-images have the same number of pixels, the N field of view sub-image beams are mixed and input to the same scanning fiber by wavelength division multiplexing In this case, this fiber only needs to scan 1000 / N pixels, which improves the refresh rate of the image.

图6A实施例中，以图5中N＝2为例，如图6A所示的基于波导的显示模组，图中右下角示意了一幅待显示图像S，图像分割单元410将这个待显示图像S分割成第一视场角子图像S1和第二视场角子图像S2。In the embodiment of FIG. 6A, N = 2 in FIG. 5 is taken as an example, and the waveguide-based display module shown in FIG. 6A is shown in the lower right corner of the figure as an image S to be displayed, and the image segmentation unit 410 displays the image to be displayed. The image S is divided into a first field of view sub-image S1 and a second field of view sub-image S2.

图6A中第一组激光光源421包括红绿蓝三个单色激光器，其中红光激光器产生R1波长的红光，绿光激光器产生G1波长的绿光，蓝光激光器产生B1波长的蓝光；第二组激光光源422包括红绿蓝三个单色激光器，其中红光激光器产生R2波长的红光，绿光激光器产生G2波长的绿光，蓝光激光器产生B2波长的蓝光。第一组激光光源421用于调制出第一视场子图像S1的像素信息，第二组激光光源422用于调制出第二视场子图像S2的像素信息。第一组激光光源421和第二组激光光源422产生的光束混合输入到光线扫描器430中的同一扫描光纤中。The first group of laser light sources 421 in FIG. 6A includes three monochromatic lasers of red, green, and blue. The red laser generates red light with a wavelength of R1, the green laser generates green light with a wavelength of G1, and the blue laser generates blue light with a wavelength of B1. The group laser light source 422 includes three monochromatic lasers of red, green, and blue. The red laser generates red light with a wavelength of R2, the green laser generates green light with a wavelength of G2, and the blue laser generates blue light with a wavelength of B2. The first group of laser light sources 421 is used to modulate the pixel information of the first field of view sub-image S1, and the second group of laser light sources 422 is used to modulate the pixel information of the second field of view sub-image S2. The light beams generated by the first group of laser light sources 421 and the second group of laser light sources 422 are mixed and input into the same scanning fiber in the light scanner 430.

可以理解，假设待显示图像S有120个像素点，通过一根扫描光纤进行扫描，则该扫描光纤需要扫描120个像素点；将待显示图像S分割成第一视场子图像S1和第二视场子图像S2后，假如第一视场子图像S1和第二视场子图像S2均具有60个像素点，第一视场子图像S1和第二视场子图像S2分别通过第一激光光源421和第二激光光源422调制出来混合输入到同一扫描光纤中，则这根光纤只需要扫描60个像素点就行了。如此便提高了图像的刷新率。Understandably, assuming that the image S to be displayed has 120 pixels and scanned by a scanning fiber, the scanning fiber needs to scan 120 pixels; the image S to be displayed is divided into a first field of view sub-image S1 and a second field of view. After the field sub-image S2, if the first field of view sub-image S1 and the second field of view sub-image S2 each have 60 pixels, the first field of view sub-image S1 and the second field of view sub-image S2 pass through the first laser light source 421 and the second laser, respectively. The light source 422 modulates the mixed input into the same scanning fiber, and this fiber only needs to scan 60 pixels. This improves the refresh rate of the image.

光线扫描器430将第一视场子图像S1和第二视场子图像S2的混合光束出射后，经目镜光学***440等准直器件准直后，射向6层堆叠设置的波导基片，每层波导基片耦入一个单色激光器产生的光束。The light scanner 430 emits the mixed light beams of the first field of view sub-image S1 and the second field of view sub-image S2, collimates by collimating devices such as the eyepiece optical system 440, and then directs it to the 6-layer stacked waveguide substrate, each layer The waveguide substrate is coupled to a light beam generated by a monochromatic laser.

下面，结合图6A、6B、6C、6D和7A介绍波导模组结构，以及波导模组中耦入单元和耦出单元结构，其中是图6A、6B、6C、6D是以6层耦入单元为例进行介绍，图7A是以两层耦入单元为例进行介绍。Next, the waveguide module structure and the coupling unit and coupling unit structures in the waveguide module will be described with reference to FIGS. 6A, 6B, 6C, 6D, and 7A. Among them, FIG. 6A, 6B, 6C, and 6D are 6-layer coupling units. For example, FIG. 7A is described by using a two-layer coupling unit as an example.

作为一种可选实施方式，图6A中，假设每组光源包括R、G、B三种发光单元，则每层耦入单元被分别配置成仅耦输入光源中的一个单色激光器产生的光束。所述耦入单元为反射式光栅(如图6C的耦入结构)或滤光片(如图6D的耦入结构)；所述耦出单元为耦出光栅(如图6C的耦出结构)或耦出反射镜阵列(如图6D的耦出结构)。As an optional implementation, in FIG. 6A, assuming that each group of light sources includes three light emitting units of R, G, and B, each layer of the coupling unit is configured to be coupled to only a light beam generated by one monochromatic laser in the input light source, respectively. . The coupling unit is a reflective grating (such as the coupling structure of FIG. 6C) or a filter (such as the coupling structure of FIG. 6D); the coupling unit is a coupling-out grating (such as the coupling structure of FIG. 6C) Or couple out the mirror array (as shown in Figure 6D).

更详细的，如图6A，6层波导基片中依次设置了耦入单元：R1耦入单元、G1耦入单元、B1耦入单元、R2耦入单元、G2耦入单元、B2耦入单元，其中，R1耦入单元用于将混合光束中R1波长的红光耦入到第一层波导基片451中，其他光束透射过R1耦入单元；G1耦入单元用于将混合光束中G1波长的绿光耦入到第二层波导基片452中，其他光束透射过G1耦入单元；B1耦入单元用于将混合光束中B1波长的蓝光耦入到第三层波导基片453中，其他光束透射过B1耦入单元。第二组波导基片460中同样设置了三层耦入单元：R2耦入单元、G2耦入单元、B2耦入单元，其中，R2耦入单元用于将混合光束中R2波长的红光耦入第四层波导基片454中，其他光束透射过R2耦入单元；G2耦入单元用于将混合光束中G2波长的绿光耦入到第五层波导基片455中，其他光束透射过G2耦入单元；B2耦入单元用于将混合光束中B2波长的蓝光耦入到第六层波导基片456中。这里所有耦入单元的层叠顺序可以不限于图中所示的情况。另外，最后一层波导基片的最后一层耦入单元可以设置为普通的耦入单元，将剩余的光束耦入波导即可，不必再进行波长选择，即图6A中，B2耦入单元可以设置为普通的耦入单元，不必再进行波长选择。In more detail, as shown in FIG. 6A, the coupling units are sequentially arranged in the 6-layer waveguide substrate: R1 coupling unit, G1 coupling unit, B1 coupling unit, R2 coupling unit, G2 coupling unit, and B2 coupling unit. Among them, the R1 coupling unit is used to couple the R1 wavelength red light in the mixed beam into the first layer waveguide substrate 451, and other beams are transmitted through the R1 coupling unit; the G1 coupling unit is used to couple the G1 in the mixed beam Wavelength green light is coupled into the second-layer waveguide substrate 452, and other beams are transmitted through the G1 coupling unit; B1 coupling unit is used to couple the blue light of B1 wavelength in the mixed beam into the third-layer waveguide substrate 453 The other beams are transmitted through the B1 coupling unit. The second group of waveguide substrates 460 also has three layers of coupling units: R2 coupling unit, G2 coupling unit, and B2 coupling unit. Among them, the R2 coupling unit is used to couple the R2 wavelength red photocoupler in the mixed beam. Into the fourth-layer waveguide substrate 454, the other beams are transmitted through the R2 coupling unit; the G2 coupling unit is used to couple the green light of the G2 wavelength in the mixed beam into the fifth-layer waveguide substrate 455, and the other beams are transmitted through G2 coupling unit; B2 coupling unit is used to couple the blue light of B2 wavelength in the mixed beam into the sixth layer waveguide substrate 456. The stacking order of all the coupling units here may not be limited to the case shown in the figure. In addition, the coupling unit of the last layer of the last layer of the waveguide substrate can be set as a common coupling unit, and the remaining beams can be coupled into the waveguide, and it is not necessary to select a wavelength, that is, in Figure 6A, the B2 coupling unit can Set as a common coupling unit, no longer need to choose the wavelength.

6层波导基片中设置了6层耦出单元：R1耦出单元、G1耦出单元、B1耦出单元、R2耦出单元、G2耦出单元、B2耦出单元，这6个耦出单元都被配置为耦出对应耦入单元所耦入的光束所述耦出单元为耦出光栅(如图6C的耦出结构)或耦出反射镜阵列(如图6D的耦出结构)。传输不同子图像光束的波导的耦出单元之间设置一定的距离使得耦出光束能够拼接成原来的待显示图像S。The 6-layer waveguide substrate is provided with 6 layers of decoupling units: R1 decoupling unit, G1 decoupling unit, B1 decoupling unit, R2 decoupling unit, G2 decoupling unit, and B2 decoupling unit. These 6 decoupling units Both are configured to couple out the light beams coupled by the corresponding coupling unit, which is a coupling-out grating (such as the coupling-out structure of FIG. 6C) or a coupling-out mirror array (such as the coupling-out structure of FIG. 6D). A certain distance is set between the decoupling units of the waveguides transmitting different sub-image light beams so that the decoupled light beams can be spliced into the original image S to be displayed.

当上述所有耦入单元均采用反射式光栅时，如图6C所示，这种反射式光栅具有一定的带宽，只将带宽内波长的光束反射入波导，其他波段的光束则透射过该反射式光栅。以R1耦入单元为例，如图6B所示为R1耦入单元的反射效率图，图中横坐标为入射到R1耦入单元的光束波长，纵坐标为R1耦入单元的反射效率，由图可知，R1耦入单元只对650nm波长的红光进行反射耦入，对其他波段的光束近乎没有反射作用，直接透射过去。When all the above-mentioned coupling units are reflective gratings, as shown in FIG. 6C, this reflective grating has a certain bandwidth, and only the light beams with wavelengths within the bandwidth are reflected into the waveguide, and the other wavelengths are transmitted through the reflective grating. Raster. Taking the R1 coupling unit as an example, as shown in FIG. 6B, the reflection efficiency diagram of the R1 coupling unit is shown. The abscissa is the wavelength of the light beam incident on the R1 coupling unit, and the ordinate is the reflection efficiency of the R1 coupling unit. As can be seen from the figure, the R1 coupling unit only reflects and couples red light with a wavelength of 650 nm, and has almost no reflection effect on the light beams in other bands, and directly transmits it.

当上述所有耦入单元均用滤光片时，如图6D所示，这种滤光片具有一定的带宽，只对带宽内波长的光束反射入波导，其他波段的光束则透射过该滤光片，滤光片可以选用带通滤波片或其他具有类似功能的滤波片，其具体的波长选择原理与上述反射式光栅类似，这里不再赘述。When all the above coupling units use filters, as shown in FIG. 6D, this filter has a certain bandwidth, and only the light beams with wavelengths within the bandwidth are reflected into the waveguide, and the other wavelengths are transmitted through the filter. The filters and filters can be bandpass filters or other filters with similar functions. The specific wavelength selection principle is similar to the above-mentioned reflective gratings, and is not repeated here.

作为优选实施方式，上述所有耦入单元还可以使用长波通滤光片或短波通滤光片。图6E以耦入单元均采用长波通滤光片为列，且从第一层耦入单元至最后一层耦入单元的截止波长逐渐升高，使得每层耦入单元只耦入对应子图像光束的R、G、B三色光中的一个。以图4B光纤扫描模组作为图像产生单元时，假设图4B中，各激光器的波长配置为如下：红光激光器R1的出射波长为650nm，绿光激光器G1的出射波长为530nm，蓝光激光器B1的出射波长为460nm；红光激光器R2的出射波长为635nm，绿光激光器G2的出射波长为520nm，蓝光激光器B2的出射波长为450nm。则图6E中6层波导基片按照耦入光束的波长从小到大依次设置耦入单元：B2耦入单元、B1耦入单元、G2耦入单元、G1耦入单元、R2耦入单元、R1耦入单元，其中，如图6F所示，B2耦入单元的截止波长为455nm，正好能反射蓝光激光器B2的出射波长为450nm的光束，其他激光器所产生的光束的波长(红光激光器R1的出射波长为650nm，绿光激光器G1的出射波长为530nm，蓝光激光器B1的出射波长为460nm；红光激光器R2的出射波长为635nm，绿光激光器G2的出射波长为520nm)都大于B2耦入单元的截止波长为455nm，因此都投射过该B2耦入单元，其他的耦入单元的截止波长逐渐升高，通过这种特殊的堆叠及截止波长逐渐升高的方式，使得每个耦入单元仅耦入一种波长的光束，将每个子图像从混合光束中分离出来。As a preferred embodiment, all of the coupling units described above may also use a long-pass filter or a short-pass filter. FIG. 6E uses the long-pass filter as a column for the coupling units, and the cut-off wavelength from the first-layer coupling unit to the last-layer coupling unit gradually increases, so that each coupling unit only couples the corresponding sub-image. One of the R, G, and B colored light beams. When the optical fiber scanning module of FIG. 4B is used as the image generating unit, it is assumed that the wavelength configuration of each laser in FIG. 4B is as follows: the output wavelength of the red laser R1 is 650 nm, the output wavelength of the green laser G1 is 530 nm, and the wavelength of the blue laser B1 is The output wavelength of the red laser R2 is 635 nm, the output wavelength of the green laser G2 is 520 nm, and the output wavelength of the blue laser B2 is 450 nm. Then, the 6-layer waveguide substrate in FIG. 6E is provided with coupling units according to the wavelength of the coupled beam from small to large: B2 coupling unit, B1 coupling unit, G2 coupling unit, G1 coupling unit, R2 coupling unit, R1 Coupling unit, as shown in Figure 6F, the cut-off wavelength of the B2 coupling unit is 455nm, which can reflect the light beam with a wavelength of 450nm from the blue laser B2, and the wavelength of the beam generated by the other laser (the red laser R1's The output wavelength of 650nm, the green laser G1 is 530nm, the blue laser B1 is 460nm; the red laser R2 is 635nm, and the green laser G2 is 520nm. The cut-off wavelength is 455nm, so all the B2 coupling units are projected. The cut-off wavelengths of other coupling units are gradually increased. Through this special stacking and cut-off wavelengths, each coupling unit is only A beam of one wavelength is coupled to separate each sub-image from the mixed beam.

上述所有耦入单元还可以使用短波通滤光片，此时，从第一层耦入单元至最后一层耦入单元的短波通滤光片的截止波长按逐渐降低设置，其波长选择原理与上述长波通滤光片类似，这里不再赘述。同样，最后一层耦入单元可以设置为普通的耦入单元，将剩余的光束耦入波导即可，不必再进行波长选择。All the above-mentioned coupling units can also use short-pass filters. At this time, the cut-off wavelength of the short-pass filters from the first-layer coupling unit to the last-layer coupling unit is gradually reduced. The wavelength selection principle and The above-mentioned long-pass filter is similar, and is not repeated here. Similarly, the coupling unit of the last layer can be set as an ordinary coupling unit, and the remaining light beams can be coupled into the waveguide without having to perform wavelength selection.

作为另一种可选实施方式，所述波导模组可以包括N层堆叠设置的波导基片，每组波导基片的耦入单元为滤光片，假设每组光源包括R、G、B三种发光单元，则每片滤光片被设计为反射对应子图像光束的RGB三波段光且透射其他波段光。如图7A所示的基于波导的显示模组，该显示模组中每层波导基片包含一片波导，与前述图6A显示模组的区别在于，光线扫描器530将图像光束出射后经目镜光学***540等准直器件准直后，第一波导550中设置的滤光片551将混合光束中R1、G1、B1波长的光束都耦入到第一波导550中进行全反射传播，其他光束透射过滤光片551进入到第二波导560中；第二波导560中设置的滤光片561将混合光束中R2、G2、B2波长的光束都耦入到第二波导560中进行全反射传播。上述第一波导550中设置的滤光片551和第二波导560中设置的滤光片561均是具有三个工作波带的滤光片。这里以滤光片551为例，如图7B所示为滤光片551的反射效率示意图，图中横坐标为入射光的波长，纵坐标为反射效率。由图可知滤光片551可以对650nm的红光、530nm的绿光、460nm的蓝光进行反射，对其他波段的光束(这里主要指第二波导中传播的波长的光束)几乎不起反射作用，直接透射过去。As another optional implementation manner, the waveguide module may include N-layer stacked waveguide substrates, and the coupling unit of each group of waveguide substrates is an optical filter. It is assumed that each group of light sources includes three components of R, G, and B. This kind of light-emitting unit, each filter is designed to reflect the RGB three-band light of the corresponding sub-image light beam and transmit light of other bands. A waveguide-based display module as shown in FIG. 7A. Each layer of the waveguide substrate in the display module includes a waveguide. The difference from the aforementioned display module of FIG. 6A is that the light scanner 530 emits the image beam and passes through the eyepiece optics. After collimation by a collimation device such as system 540, a filter 551 provided in the first waveguide 550 couples the R1, G1, and B1 wavelength beams in the mixed beam into the first waveguide 550 for total reflection propagation, and the other beams are transmitted. The filter 551 enters the second waveguide 560; the filter 561 provided in the second waveguide 560 couples the light beams with wavelengths R2, G2, and B2 in the mixed light beam into the second waveguide 560 for total reflection propagation. Each of the filter 551 provided in the first waveguide 550 and the filter 561 provided in the second waveguide 560 is a filter having three working wave bands. Here, the filter 551 is taken as an example. As shown in FIG. 7B, a reflection efficiency diagram of the filter 551 is shown. In the figure, the abscissa is the wavelength of the incident light, and the ordinate is the reflection efficiency. It can be seen from the figure that the filter 551 can reflect red light at 650 nm, green light at 530 nm, and blue light at 460 nm, and it has almost no reflection effect on light beams in other bands (here, mainly light beams with a wavelength propagating in the second waveguide). Direct transmission.

作为一种可选的实施方式，图7A中，在第一波导550中设置的滤光片551的情况下，第二波导560中可以设置普通的耦入单元将剩余的光束耦入第二波导即可，不需要再对波长进行选择了。As an optional implementation manner, in the case of the filter 551 provided in the first waveguide 550 in FIG. 7A, a common coupling unit may be provided in the second waveguide 560 to couple the remaining light beams into the second waveguide. That's it, you don't need to select the wavelength again.

同样，第一波导550中的耦出单元和第二波导560中的耦出单元可以是耦出光栅或耦出反射镜阵列。第一波导550中的耦出单元552将第一波导中传输的光束耦出第一波导，第二波导560中的耦出单元562将第二波导中传输的光束耦出第二波导。第一波导550和第二波导560的耦出单元之间设置一定的距离使得耦出光束能够拼接成原来的待显示图像S。Similarly, the coupling-out unit in the first waveguide 550 and the coupling-out unit in the second waveguide 560 may be a coupling-out grating or a coupling-out mirror array. The decoupling unit 552 in the first waveguide 550 couples the light beam transmitted in the first waveguide out of the first waveguide, and the decoupling unit 562 in the second waveguide 560 couples the light beam transmitted in the second waveguide out of the second waveguide. A certain distance is set between the coupling units of the first waveguide 550 and the second waveguide 560 so that the coupled beam can be spliced into the original image S to be displayed.

上述实施例中，波导模组均以每组光源只包括R、G、B三种发光单元为例，本领域技术人员应当知晓，当每组光源不仅仅包括R、G、B三种发光单元时，可依据本发明相同原理，对波导模组的耦入单元和耦出单元进行相应数量或参数调整即可。In the above embodiments, the waveguide module takes each group of light sources to include only three types of light emitting units, such as R, G, and B. Those skilled in the art should know that when each group of light sources includes more than three types of light emitting units, such as R, G, and B, In this case, according to the same principle of the present invention, the corresponding number or parameter adjustment of the coupling unit and the coupling unit of the waveguide module can be adjusted.

接下来结合图8介绍光纤扫描模组通过多根扫描光纤将M个子图像同时调制射出的实施例，此时，M＞N。如图8所示的显示模组，设M＝6，N＝2，图像分割单元将待显示图像分割为6个子图像S11、S12、S13、S21、S22、S23。子图像S11和子图像S21分别由激光光源6211和6212调制，激光光源6211和6212所调制出来的图像光束都输入到扫描光纤6210；子图像S12和子图像S22分别由激光光源6221和6222调制，激光光源6221和6222所调制出来的图像光束都输入到扫描光纤6220；子图像S13和子图像S23分别由激光光源6231和6232调制，激光光源6231和6232所调制出来的图像光束都输入到扫描光纤6230。如此，每根光纤所扫描的每个像素点都包含了两个子图像的像素信息。Next, an embodiment in which the fiber scanning module modulates and emits M sub-images through multiple scanning fibers at the same time is described with reference to FIG. 8. At this time, M> N. As shown in the display module shown in FIG. 8, if M = 6 and N = 2, the image segmentation unit divides the image to be displayed into six sub-images S11, S12, S13, S21, S22, and S23. The sub-images S11 and S21 are modulated by the

laser light sources

6211 and 6212, respectively. The image beams modulated by the

laser light sources

6211 and 6212 are input to the scanning fiber 6210; the sub-images S12 and the sub-image S22 are modulated by the

laser light sources

6221 and 6222, respectively. The image beams modulated by 6221 and 6222 are input to the scanning fiber 6220; the sub-images S13 and S23 are modulated by the

laser light sources

6231 and 6232, respectively, and the image beams modulated by the

laser light sources

6231 and 6232 are input to the scanning fiber 6230. In this way, each pixel point scanned by each fiber contains pixel information of two sub-images.

图8中，激光光源6211、6221、6231的配置相同，都包括R1、G1、B1三个单色激光器；上述激光光源6212、6222、6232的配置相同，都包括R2、G2、B2三个单色激光器。各激光器的波长可配置为如下方式：红光激光器R1的出射波长为650nm，绿光激光器G1的出射波长为530nm，蓝光激光器B1的出射波长为460nm；红光激光器R2的出射波长为635nm，绿光激光器G2的出射波长为520nm，蓝光激光器B2的出射波长为450nm。In FIG. 8, the configurations of the

laser light sources

6121, 6221, and 6231 are the same, and they include three monochromatic lasers of R1, G1, and B1; the configurations of the above laser light sources 6122, 6222, and 632 are the same, and they include three single lamps of R2, G2, and B2. Color laser. The wavelength of each laser can be configured as follows: the emission wavelength of the red laser R1 is 650 nm, the emission wavelength of the green laser G1 is 530 nm, the emission wavelength of the blue laser B1 is 460 nm; the emission wavelength of the red laser R2 is 635 nm, and the green The output wavelength of the optical laser G2 is 520 nm, and the output wavelength of the blue laser B2 is 450 nm.

扫描光纤6210、6220、6230调制出的光束在入射到波导基片前相互拼接，所述拼接指内容拼接，而非扫描光束物理性质的拼接。扫描光纤6210、6220、6230调制出的光束经准直***640后，射入波导模组650，波导模组650按照上述各实施例中的波导模组方案，将子图像S11、S12、S13、S21、S22、S23耦出，在人眼处完成视场拼接。The light beams modulated by the

scanning fibers

6210, 6220, and 6230 are spliced to each other before being incident on the waveguide substrate. The splicing refers to the content splicing, not the splicing of the scanning beam physical properties. The light beams modulated by the

scanning fibers

6210, 6220, and 6230 pass through the collimation system 640, and then enter the waveguide module 650. The waveguide module 650, according to the waveguide module schemes in the above embodiments, converts the sub-images S11, S12, S13, S21, S22, S23 are coupled out to complete the field of view stitching at the human eye.

平板显示屏实施例：Example of a flat panel display:

基于与光纤扫描模组同样的思路，本发明实施例还公开了一种平板显示屏，如图9A所示，该平板显示屏的每个像素包括至少两组子像素，每组子像素包括R、G、B三个色彩单元，各组子像素中的相同色彩单元采用不同波长。Based on the same idea as the fiber scanning module, an embodiment of the present invention also discloses a flat panel display. As shown in FIG. 9A, each pixel of the flat panel display includes at least two sub-pixels, and each sub-pixel includes R , G, B three color units, the same color unit in each group of sub-pixels use different wavelengths.

在图中，可以看出平板显示屏710中的一个像素点X包含了m组子像素信息，每组子像素信息由不同波长的R、G、B三种色彩单元调制。比如，第一组子像素信息由R1波长的红光色彩单元、G1波长的绿光色彩单元、B1波长的蓝光色彩单元调制；第二组子像素信息由R2波长的红光色彩单元、G2波长的绿光色彩单元、B2波长的蓝光色彩单元调制；以此类推，第m组子像素信息由Rm波长的红光色彩单元、Gm波长的绿光色彩单元、Bm波长的蓝光色彩单元调制。In the figure, it can be seen that one pixel X in the flat panel display 710 contains m groups of sub-pixel information, and each set of sub-pixel information is modulated by three color units of R, G, and B with different wavelengths. For example, the first set of sub-pixel information is modulated by the R1 wavelength red color unit, the G1 wavelength of the green color unit, and the B1 wavelength of the blue light unit; the second set of subpixel information is modulated by the R2 wavelength of the red light unit and the G2 wavelength. Modulation of green light color unit and blue light color unit of B2 wavelength; and so on, the m-th group of sub-pixel information is modulated by red light color unit of Rm wavelength, green light color unit of Gm wavelength, and blue light color unit of Bm wavelength.

作为较佳实施例，如图9B所示，图中平板显示屏700中的一个像素点X包含了两组子像素信息。其中，第一组子像素信息由R1波长的红光色彩单元、G1波长的绿光色彩单元、B1波长的蓝光色彩单元调制；第二组子像素信息由R2波长的红光色彩单元、G2波长的绿光色彩单元、B2波长的蓝光色彩单元调制。可以理解，如此上述平板显示屏700中的每一个像素便携带了两组像素的信息，一个平板显示屏700在同一时间便可通过波分复用的方式显示两幅内容不同的图像。As a preferred embodiment, as shown in FIG. 9B, one pixel X in the flat panel display 700 in the figure includes two sets of sub-pixel information. Among them, the first group of sub-pixel information is modulated by the R1 wavelength red color unit, the G1 wavelength of the green color unit, and the B1 wavelength of the blue light unit; the second group of subpixel information is modulated by the R2 wavelength of the red light unit and the G2 wavelength. Modulation of green light color unit and B2 blue light color unit. It can be understood that, in this way, each pixel in the above-mentioned flat-panel display 700 can carry two sets of pixel information, and one flat-panel display 700 can display two images with different contents at the same time in a wavelength division multiplexing manner.

上述平板显示屏可以为液晶显示屏LCD、有机发光二级管OLED显示屏、液晶硅LCOS显示屏、DLP显示屏等平板显示屏。The above flat panel display may be a flat panel display such as a liquid crystal display LCD, an organic light emitting diode OLED display, a liquid crystal silicon LCOS display, a DLP display and the like.

基于波导的显示模组的第二组实施例(图像产生子单元为平板显示屏)：The second group of embodiments of the waveguide-based display module (the image generating sub-unit is a flat panel display):

图10实施例所示的基于波导的显示模组，其图像产生单元包括一块上述实施例所述的平板显示屏，其中：The waveguide-based display module shown in the embodiment of FIG. 10 includes an image generating unit including a flat panel display according to the above embodiment, wherein:

图像分割单元，用于将待显示图像分割为M个子图像，M为大于等于2的整数。An image segmentation unit is configured to segment an image to be displayed into M sub-images, where M is an integer greater than or equal to 2.

平板显示屏700的每个像素包括M组子像素，该平板显示屏通过波分复用的方式调制出包含所述M个子图像的混合光束，各子图像光束中的相同色彩光束具有不同波长。平板显示屏700每次显示的混合图像光经目镜光学***准直后被耦入到波导模组中。Each pixel of the flat-panel display 700 includes M groups of sub-pixels. The flat-panel display modulates a mixed light beam including the M sub-images in a wavelength division multiplexing manner. The same-color light beams in the sub-image light beams have different wavelengths. The mixed image light displayed by the flat panel display 700 each time is collimated into the waveguide module after being collimated by the eyepiece optical system.

波导模组，设置在所述平板显示屏的出光光路上，波导模组具有多层耦入单元和多层耦出单元，每层耦入单元被配置为耦入不同波长范围的光，所述平板显示屏产生的待显示图像混合光束经波导模组耦出单元耦出后的出射图像拼接为所述待显示图像。A waveguide module is provided on the light-emitting optical path of the flat panel display. The waveguide module has a multi-layer coupling unit and a multi-layer coupling unit. Each coupling unit is configured to couple light of different wavelength ranges. The mixed image beam of the image to be displayed generated by the flat panel display is spliced into the image to be displayed after being coupled out by the waveguide module coupling unit.

在本申请中，平板显示屏700每次可以显示至少两幅不同视场角子图像，平板显示屏700的每个像素点携带了至少两组不同视场角子像素信息。其中，第一视场角子像素由R1波长的红光色彩单元、G1波长的绿光色彩单元、B1波长的蓝光色彩单元调制；第二视场角子像素由R2波长的红光色彩单元、G2波长的绿光色彩单元、B2波长的蓝光色彩单元调制……第N视场角子像素由Rm波长的红光色彩单元、Gm波长的绿光色彩单元、Bm波长的蓝光色彩单元调制。In the present application, the flat panel display 700 can display at least two different FOV sub-images each time, and each pixel of the flat panel display 700 carries at least two sets of different FOV sub-pixel information. Among them, the first field of view sub-pixel is modulated by the R1 wavelength red color unit, the G1 wavelength of the green color unit, and the B1 wavelength of the blue light unit; the second field of view sub-pixel is modulated by the R2 wavelength of the red light unit and the G2 wavelength. Modulation of green light color unit, blue light color unit of B2 wavelength ... The Nth field angle sub-pixel is modulated by red light color unit of Rm wavelength, green light color unit of Gm wavelength, and blue light color unit of Bm wavelength.

本实施例中，波导模组如何对输入光束进行波长选择并耦入传输，再耦出拼接过程与基于波导的显示模组的第一组实施例一致，在此不再赘述。In this embodiment, how the waveguide module selects the wavelength of the input beam and couples it to the transmission, and then the coupling and splicing process is the same as the first group of embodiments of the waveguide-based display module, and is not repeated here.

MEMS扫描模组实施例：Example of MEMS scanning module:

基于与光纤扫描模组同样的思路，本发明实施例还公开了一种MEMS扫描模组850，如图11A所示，包括MEMS扫描器和光源，所述光源包括N组光源，每组光源包括R、G、B三种发光单元，所述N组光源中相同色彩通道的N种发光单元被配置为发射不同波长的光，N为大于等于2的整数。所述发光光源中的N组光源为N组激光管光源或N组LED光源。Based on the same idea as the fiber scanning module, an embodiment of the present invention also discloses a MEMS scanning module 850. As shown in FIG. 11A, it includes a MEMS scanner and a light source. The light source includes N groups of light sources, and each group of light sources includes Three types of light-emitting units of R, G, and B. The N types of light-emitting units of the same color channel in the N groups of light sources are configured to emit light of different wavelengths, and N is an integer greater than or equal to two. The N group light sources in the light emitting light source are N group laser tube light sources or N group LED light sources.

在图中，可以看出有N组RGB光源，其中，第一光源的红光产生器产生R1波长的红光，绿光产生器产生G1波长的绿光，蓝光产生器产生B1波长的蓝光；第二光源的红光产生器产生R2波长的红光，绿光产生器产生G2波长的绿光，蓝光产生器产生B2波长的蓝光……第N光源的红光产生器产生Rn波长的红光，绿光产生器产生Gn波长的绿光，蓝光产生器产生Bn波长的蓝光。各组光源产生的光合束后一起经MEMS扫描模组的扫描镜反射扫描出去。In the figure, it can be seen that there are N groups of RGB light sources. Among them, the red light generator of the first light source generates red light of R1 wavelength, the green light generator generates green light of G1 wavelength, and the blue light generator generates blue light of B1 wavelength; The red light generator of the second light source generates red light of the R2 wavelength, the green light generator generates green light of the G2 wavelength, the blue light generator generates blue light of the B2 wavelength ... The red light generator of the Nth light source generates red light of Rn wavelength The green light generator generates green light with a wavelength of Gn, and the blue light generator generates blue light with a wavelength of Bn. The light generated by each group of light sources is combined and scanned out by the reflection mirror of the MEMS scanning module.

可选地，如图11B所示，图中MEMS扫描模组800的扫描镜810所扫描的每个像素都是由第一光源821和第二光源822调制的光束合束反射出去。其中，第一光源821的红光产生器产生R1波长的红光，绿光产生器产生G1波长的绿光，蓝光产生器产生B1波长的蓝光；第二光源822的红光产生器产生R2波长的红光，绿光产生器产生G2波长的绿光，蓝光产生器产生B2波长的蓝光。这里的光源可以是发光二极管LED或激光器。Optionally, as shown in FIG. 11B, each pixel scanned by the scanning mirror 810 of the MEMS scanning module 800 in the figure is combined and reflected by the light beams modulated by the first light source 821 and the second light source 822. Among them, the red light generator of the first light source 821 generates red light of R1 wavelength, the green light generator generates green light of G1 wavelength, and the blue light generator generates blue light of B1 wavelength; the red light generator of the second light source 822 generates R2 wavelength The red light, the green light generator generates green light with a wavelength of G2, and the blue light generator generates blue light with a wavelength of B2. The light source here may be a light emitting diode LED or a laser.

基于波导的显示模组的第三组实施例(图像产生子单元为MEMS扫描模组)：The third group of embodiments of the waveguide-based display module (the image generating sub-unit is a MEMS scanning module):

图12实施例所示的基于波导的显示模组，其图像产生单元为一组上述实施例中所述的MEMS扫描模组，其中：The waveguide-based display module shown in the embodiment in FIG. 12 has an image generating unit as a set of the MEMS scanning modules described in the above embodiments, wherein:

图像分割单元，用于将待显示图像分割为N个子图像，N为大于等于2的整数；N个子图像可以理解为N个不同视场角子图像。An image segmentation unit is configured to divide an image to be displayed into N sub-images, where N is an integer greater than or equal to 2; N sub-images can be understood as N sub-images with different field angles.

所述MEMS扫描模组的每个像素包括N组子像素，该MEMS扫描模组通过波分复用的方式调制出包含所述N个子图像的混合光束，各子图像光束中的相同色彩光束具有不同波长；Each pixel of the MEMS scanning module includes N groups of sub-pixels, and the MEMS scanning module modulates a mixed light beam including the N sub-images in a wavelength division multiplexing manner. The same-color light beams in each sub-image light beam have Different wavelengths

波导模组，设置在所述MEMS扫描模组的出光光路上，波导模组具有多层耦入单元和多层耦出单元，每层耦入单元被配置为耦入不同波长范围的光，所述MEMS扫描模组产生的待显示图像混合光束经波导模组耦出单元耦出后的出射图像拼接为所述待显示图像。A waveguide module is provided on the light-emitting optical path of the MEMS scanning module. The waveguide module has a multi-layer coupling unit and a multi-layer coupling unit. Each of the coupling units is configured to couple light of different wavelength ranges. The mixed image of the to-be-displayed image generated by the MEMS scanning module is spliced into the to-be-displayed image after coupling out by the waveguide module coupling unit.

在本实施例中，N组光源分别调制N个不同视场角子图像形成图像光束，合束后竟扫描镜逐像素反射扫描出去。第一光源的红光产生器产生R1波长的红光，绿光产生器产生G1波长的绿光，蓝光产生器产生B1波长的蓝光；第二光源的红光产生器产生R2波长的红光，绿光产生器产生G2波长的绿光，蓝光产生器产生B2波长的蓝光……第N光源的红光产生器产生Rn波长的红光，绿光产生器产生Gn波长的绿光，蓝光产生器产生Bn波长的蓝光。In this embodiment, the N groups of light sources modulate N sub-images of different field angles to form an image beam, and after the beams are combined, the scanning mirror scans out pixel by pixel. The red light generator of the first light source generates red light with a wavelength of R1, the green light generator generates green light with a wavelength of G1, and the blue light generator generates blue light with a wavelength of B1; the red light generator of the second light source generates red light with a wavelength of R2, The green light generator generates green light of G2 wavelength, the blue light generator generates blue light of B2 wavelength ... The red light generator of the Nth light source generates red light of the Rn wavelength, the green light generator generates green light of the Gn wavelength, and the blue light generator Blue light of Bn wavelength is generated.

在本实施例中，MEMS扫描器的扫描镜反射的混合图像光经目镜光学***准直后被耦入到N组堆叠设置的波导基片中，每组波导基片只耦入对应视场角子图像光束，即，第一视场角子图像光束耦入第一组波导基片，第二视场角子图像光束耦入第二组波导基片……第N视场角子图像光束耦入第N组波导基片。N个视场角子图像光束在各自的波导基片传输后耦出拼接成上述待显示图像。如此便拓宽了显示模组的视场角。In this embodiment, the mixed image light reflected by the scanning mirror of the MEMS scanner is collimated by the eyepiece optical system and is coupled into N groups of stacked waveguide substrates. Each group of waveguide substrates is only coupled to the corresponding field of view. The image beam, that is, the first field of view sub-image beam is coupled to the first group of waveguide substrates, the second field of view sub-image beam is coupled to the second group of waveguide substrates ... the N-th field of view sub-image beam is coupled to the N group Waveguide substrate. The N field-of-view sub-image beams are coupled and spliced into the image to be displayed after being transmitted by the respective waveguide substrates. This widens the field of view of the display module.

同样，本实施例中，各层波导如何对输入光束进行波长选择并耦入传输，再耦出拼接过程与基于波导的显示模组的第一组实施例一致，在此不再赘述。Similarly, in this embodiment, how the waveguides of each layer select the wavelength of the input beam and couple it to the transmission, and then the coupling and splicing process is the same as the first set of embodiments of the waveguide-based display module, which is not repeated here.

基于波导的显示模组的第四组实施例(图像产生单元与波导模组之间设置光束分离Fourth embodiment of the waveguide-based display module (beam separation is set between the image generating unit and the waveguide module 器)：器):

前述基于波导的显示模组的第一组实施例～第三组实施例中，波导模组需要被设计为具备分离待显示图像混合光束中的不同波长光束及实现视场角角度调整两个功能，对波导模组设计及加工工艺要求很高，不利于规模量产。本实施例中，为了解决这一问题，提出在图像产生单元与波导模组之间设置光束分离器，可分担光束分离工作及部分视场角调整工作，减轻波导模组设计难度及加工难度,第一组实施例～第三组实施例均可按照本实施例方式进行改进。In the foregoing first to third embodiments of the waveguide-based display module, the waveguide module needs to be designed to have two functions of separating beams of different wavelengths in the mixed beam of the image to be displayed and adjusting the angle of view angle. The requirements for the design and processing of waveguide modules are very high, which is not conducive to mass production. In this embodiment, in order to solve this problem, it is proposed to set a beam splitter between the image generating unit and the waveguide module, which can share the beam splitting work and part of the field angle adjustment work, reducing the design difficulty and processing difficulty of the waveguide module, The first group of embodiments to the third group of embodiments can be improved in the manner of this embodiment.

参见图13，为本发明实施例基于波导的显示模组的结构示意图，图13～图14中图像产生单元以图4B中的光纤扫描模组为例。Referring to FIG. 13, which is a schematic structural diagram of a waveguide-based display module according to an embodiment of the present invention. The image generating unit in FIGS. 13 to 14 is based on the optical fiber scanning module in FIG. 4B as an example.

左下角为待显示图像S，第一组光源221(波长为R1G1B1)和第二光源222(波长为R2G2B2)分别调制出该待显示图像S的第一视场图像S1和第二视场图像S2；第一视场图像S1和第二视场图像S2的光束输入光纤扫描器210的同一根扫描光纤中进行扫描。The lower left corner is the image S to be displayed. The first group of light sources 221 (wavelength R1G1B1) and the second light source 222 (wavelength R2G2B2) respectively modulate a first field of view image S1 and a second field of view image S2 of the image to be displayed S ; The light beams of the first field of view image S1 and the second field of view image S2 are input to the same scanning fiber of the fiber scanner 210 for scanning.

光纤扫描器210的出光光路上设置有光束分离器930，光束分离器930可以包括多个二向色滤光器，二向色滤光器可以为带通滤光器、短通滤光器、长通滤光器中的一种或多种，该光束分离器930用于将不同波长的光束进行分离，同时通过设计二向色滤光器的反射角度，可以调整每束分离光束的出射角度。当光束分离器采用多个长波通滤光器时，长波通滤光器的截止波长逐渐升高；当光束分离器采用短波通滤光器时，短波通滤光器的截止波长逐渐降低；每层耦入单元只耦入待显示图像混合光束中一个波长的光束。图13以光束分离器930同光轴设置6个短通滤光器931-496为例，这6个短通滤光器截止波长逐渐降低，分别反射波长为R1、R2、G1、G2、B1、B2(650nm、635nm、530nm、520nm、460nm、450nm)的光束。其中短通滤光器931、933、935反射的是同一个子图像(第一视场图像S1)的三个波长光束，因此在设计时，三个短通滤光器931、933、935反射角度相同；短通滤光器932、934、936反射的是同一个子图像(第二视场图像S2)的三个波长光束，因此三个短通滤光器932、934、936的反射角度相同，而这三个与931、933、935反射角度不同，两组光束出射的光锥角度重叠越小，拼接市场角越大。A beam splitter 930 is provided on the light output path of the fiber scanner 210. The beam splitter 930 may include multiple dichroic filters. The dichroic filters may be band-pass filters, short-pass filters, One or more of long-pass filters. The beam splitter 930 is used to separate beams of different wavelengths. At the same time, by designing the reflection angle of the dichroic filter, the exit angle of each separated beam can be adjusted. . When the beam splitter uses multiple long-pass filters, the cut-off wavelength of the long-pass filter gradually increases; when the beam splitter uses a short-pass filter, the cut-off wavelength of the short-pass filter gradually decreases; each The layer coupling unit is only coupled to a beam of one wavelength in the mixed beam of the image to be displayed. Figure 13 uses the beam splitter 930 as an example to set six short-pass filters 931-496 on the same optical axis. The cut-off wavelengths of these six short-pass filters gradually decrease, and the reflected wavelengths are R1, R2, G1, G2, and B1, respectively. , B2 (650nm, 635nm, 530nm, 520nm, 460nm, 450nm). Among them, the short-

pass filters

931, 933, and 935 reflect three wavelength beams of the same sub-image (first field of view image S1). Therefore, when designing, the three short-

pass filters

931, 933, and 935 reflect angles. The same; the short-

pass filters

932, 934, and 936 reflect three wavelength beams of the same sub-image (second field of view image S2), so the reflection angles of the three short-

pass filters

932, 934, and 936 are the same, These three are different from the reflection angles of 931, 933, and 935. The smaller the overlap of the light cone angles emitted by the two groups of beams, the larger the splicing market angle.

假设图13中，扫描光纤的摆动角度为-20°～20°，可以通过设置各个短通滤光器931-936的角度，使第一视场图像S1的光束(R1G1B1)以-40°～0°进入波导941、943、945的耦入光栅；第二视场图像S2的光束(R2G2B2)以0°～40°进入波导942、944、946的耦入光栅。Assume that the swing angle of the scanning fiber in FIG. 13 is -20 ° to 20 °. The angle of each short-pass filter 931-936 can be set to make the light beam (R1G1B1) of the first field of view image S1 from -40 ° to 0 ° enters the coupling gratings of

waveguides

941, 943, and 945; the light beam (R2G2B2) of the second field of view image S2 enters the coupling gratings of

waveguides

942, 944, and 946 at 0 ° to 40 °.

当光束分离器采用带通滤波器时，图13中的光束分离器930可同样可以采取6个带通滤波器，每个带通滤波器反射一个波长的光即可。当然，当光束分离器采用带通滤波器时，也可以如图14中的光束分离器950，设置2个带通滤光器951和952，分别反射波长为R1、G1、B1(650nm、530nm、460nm)和R2、G2、B2(635nm、520nm、450nm)的两组光束。同样由于2个带通滤光器951和952反正的视场图像不同，二者反射角度需要设置为不同，同样，带通滤光器951和952反射光锥重叠越小，拼接市场角越大。When the beam splitter uses a band-pass filter, the beam splitter 930 in FIG. 13 can also adopt 6 band-pass filters, and each band-pass filter can reflect light of one wavelength. Of course, when a band-pass filter is used for the beam splitter, two band-

pass filters

951 and 952 may be provided as in the beam splitter 950 in FIG. 14, and the reflection wavelengths are R1, G1, B1 (650nm, 530nm, respectively). , 460nm) and R2, G2, B2 (635nm, 520nm, 450nm). Also, because the field-of-view images of the two

bandpass filters

951 and 952 are different, the reflection angles of the two need to be set differently. Similarly, the smaller the overlap of the reflection cones of the

bandpass filters

951 and 952, the larger the stitching market angle. .

波导模组，设置在所述光束分离器的出光光路上，波导模组具有多层耦入单元和多层耦出单元，每层耦入单元耦入不同波长范围的光，所述耦出单元为耦出光栅或耦出反射镜阵列。图13中光束分离器930错位分出了6束光，波导941-946的耦入光栅设置于各光束的出光位置，将各光束耦入到各个波导中进行传输，波导941、943、945中的耦入光栅、中继光栅和耦出光栅相互配合将第一视场图像S1的光束以与第一视场角度耦出；波导942、944、946中的耦入光栅、中继光栅和耦出光栅相互配合将第二视场图像S2的光束以与第二视场角度耦出；第一视场图像S1和第二视场图像S2在波导外互相拼接成完整视场图像。图14中光束分离器930错位分出了2束光，其中，第一光束为波长R1G1B1的第一视场图像光束，第二光束为波长R2G2B2的第二视场图像光束；波导947-952的耦入光栅设置于这两光束的出光位置，其中，波导947-949的耦入光栅设置在一条光路上，将波长R1G1B1的第一视场图像光束分别耦入各个波导中进行传输，波导950-952的耦入光栅设置在另一条光路上，将波长R2G2B2的第二视场图像光束分别耦入各个波导中进行传输；波导947-952中的耦入光栅、中继光栅和耦出光栅相互配合将第一视场图像S1的光束以与第一视场角度耦出；波导947-949中的耦入光栅、中继光栅和耦出光栅相互配合将第二视场图像S2的光束以与第二视场角度耦出；第一视场图像S1和第二视场图像S2在波导外互相拼接成完整视场图像。A waveguide module is provided on the light exiting optical path of the beam splitter. The waveguide module has a multi-layer coupling unit and a multi-layer coupling unit. Each layer of the coupling unit couples light of a different wavelength range. The coupling unit Coupling grating or mirror array. In Fig. 13, the beam splitter 930 separates 6 beams of light. The coupling gratings of the waveguides 941 to 946 are set at the light exit positions of the beams, and the beams are coupled to the waveguides for transmission. The

waveguides

941, 943, and 945 are transmitted. The coupling grating, relay grating, and coupling-out grating cooperate with each other to couple the light beam of the first field of view image S1 at an angle with the first field of view; the coupling grating, relay grating, and coupling in

waveguides

942, 944, and 946 The exit gratings cooperate with each other to couple the light beam of the second field of view image S2 with the second field of view angle; the first field of view image S1 and the second field of view image S2 are spliced together outside the waveguide to form a complete field of view image. In FIG. 14, the beam splitter 930 separates two beams. Among them, the first beam is a first field of view image beam with a wavelength of R1G1B1, and the second beam is a second field of view image beam with a wavelength of R2G2B2; Coupling gratings are set at the light exit positions of these two beams. Among them, the coupling gratings of waveguides 947-949 are set on an optical path, and the first field-of-view image beams with wavelengths R1G1B1 are respectively coupled to each waveguide for transmission. The coupling grating of 952 is set on another optical path, and the second field-of-view image beam of wavelength R2G2B2 is coupled into each waveguide for transmission; the coupling grating, relay grating, and coupling grating in waveguide 947-952 cooperate with each other. Coupling the light beam of the first field of view image S1 with the first field of view angle; the coupling gratings, relay gratings, and decoupling gratings in the waveguides 947-949 cooperate with each other to match the light beam of the second field of view image S2 with the first The two field of view angles are coupled out; the first field of view image S1 and the second field of view image S2 are spliced to each other outside the waveguide to form a complete field of view image.

光束分离器的形式，可以是横向一字形错位排布，如图15所示，也可以是折叠型错位排布，如图16所示；还可以是折叠型排布，如图17所示，折叠型排布可以使耦入设计结构更紧凑。The form of the beam splitter can be a horizontal zigzag misalignment arrangement, as shown in FIG. 15, or a folding misalignment arrangement, as shown in FIG. 16; it can also be a folding arrangement, as shown in FIG. 17, The folding arrangement can make the coupling design structure more compact.

同样，在基于波导的显示模组的第四组实施例，当所述图像产生单元通过多个图像产生子单元将所述M个子图像同时调制射出时，多个图像产生子单元的光束在入射到光束分离器前相互拼接。Similarly, in the fourth group of embodiments of the waveguide-based display module, when the image generating unit modulates and outputs the M sub-images through multiple image generating sub-units at the same time, the light beams of the multiple image generating sub-units are incident. Go to the beam splitter before splicing.

本发明所有实施例中，“待显示图像”可以是一幅完整图像，也可以是一幅完整图像中的局部图像，即本发明实施例中的一种基于波导的显示模组本身可以作为一个独立模组单独处理完整视场画面，也可以作为拼接模组中的一部分，只处理局部视场画面，与多个类似模组拼接后实现完整视场画面。In all embodiments of the present invention, the “image to be displayed” may be a complete image or a partial image in a complete image, that is, a waveguide-based display module in the embodiment of the present invention may be used as a The independent module can process the complete FOV picture separately, and can also be used as a part of the stitching module. It can only process the partial FOV picture, and realize the complete FOV picture after splicing with multiple similar modules.

在基于波导的显示模组的所有实施例中，作为一种优选的实施方式，每组波导基片中均设置有中继单元，用于沿垂直于耦出单元的扩瞳方向的方向扩瞳，中继单元可以为中继光栅，也可以为反射镜阵列。以图6A以中继光栅为例，图中耦出单元在Y方向进行扩瞳，中继光栅则在X方向进行扩瞳。In all embodiments of the waveguide-based display module, as a preferred implementation mode, a relay unit is provided in each group of waveguide substrates for dilating pupils in a direction perpendicular to the dilation direction of the decoupling unit. The relay unit may be a relay grating or a mirror array. Taking FIG. 6A as an example of a relay grating, the coupling unit in the figure performs pupil dilation in the Y direction, and the relay grating performs pupil dilation in the X direction.

在基于波导的显示模组的所有实施例中，图像分割单元将待显示图像分割为若干个子图像时，相邻子图像可以具有或不具有相同图像区域，当相邻子图像具有相同图像区域视，相邻子图像在拼接中会存在一些重叠的部分，但最终呈现在人眼的仍是上述待显示图像。In all embodiments of the waveguide-based display module, when an image segmentation unit divides an image to be displayed into several sub-images, adjacent sub-images may or may not have the same image area. When adjacent sub-images have the same image area, There will be some overlapping parts in the stitching of adjacent sub-images, but it is still the above-mentioned image to be displayed that is finally displayed to the human eye.

另外，本发明实施例还提供了一种应用本发明实施例基于波导的显示模组的近眼显示设备。In addition, an embodiment of the present invention also provides a near-eye display device to which the waveguide-based display module of the embodiment of the present invention is applied.

由于本发明基于波导的显示模组采用了波分复用方式，在实现同样分辨率同样视场角的情况下，扫描光纤数量可减少，有利于近眼显示设备的小型化生产，即本发明采用了一种全新思路解决近眼显示模组大视场和小型化兼顾问题。Because the waveguide-based display module of the present invention adopts a wavelength division multiplexing method, the number of scanning fibers can be reduced under the condition of achieving the same resolution and the same field of view, which is beneficial to the miniaturization of near-eye display devices. A new idea is proposed to solve the problems of large field of view and miniaturization of the near-eye display module.

本说明书中公开的所有特征，或公开的所有方法或过程中的步骤，除了互相排斥的特征和/或步骤以外，均可以以任何方式组合。All features disclosed in this specification, or all disclosed methods or steps, other than mutually exclusive features and / or steps, may be combined in any manner.

本说明书(包括任何附加权利要求、摘要和附图)中公开的任一特征，除非特别叙述，均可被其他等效或具有类似目的的替代特征加以替换。即，除非特别叙述，每个特征只是一系列等效或类似特征中的一个例子而已。Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless specifically stated otherwise, may be replaced by other equivalent or similar purpose alternative features. That is, unless specifically stated, each feature is just one example of a series of equivalent or similar features.

本发明并不局限于前述的具体实施方式。本发明扩展到任何在本说明书中披露的新特征或任何新的组合，以及披露的任一新的方法或过程的步骤或任何新的组合。The invention is not limited to the foregoing specific embodiments. The invention extends to any new feature or any new combination disclosed in this specification, and to any new method or process step or any new combination disclosed.

Claims

一种光纤扫描模组，包括光纤扫描器和输入光源，光纤扫描器包括至少一根扫描光纤，其特征在于：一根扫描光纤对应一路输入光源，一路所述输入光源包括N组光源，每组光源至少包括R、G、B三种发光单元，所述N组光源中相同色彩通道的发光单元被配置为发射不同波长的光，N为大于等于2的整数。An optical fiber scanning module includes an optical fiber scanner and an input light source. The optical fiber scanner includes at least one scanning optical fiber, which is characterized in that one scanning optical fiber corresponds to one input light source, and one input light source includes N groups of light sources, each group The light source includes at least three light-emitting units of R, G, and B. The light-emitting units of the same color channel in the N groups of light sources are configured to emit light of different wavelengths, and N is an integer greater than or equal to two.
如权利要求1所述的光纤扫描模组，其特征在于，一路所述输入光源中的N组光源产生的光线，经合束后输入所述光纤扫描器中的一根扫描光纤中。The optical fiber scanning module according to claim 1, wherein the light rays generated by the N groups of light sources among the input light sources are combined and input into one scanning optical fiber in the optical fiber scanner.
如权利要求2所述的光纤扫描模组，其特征在于，当光纤扫描器包含两根以上扫描光纤时，每根扫描光纤对应的输入光源波长配置相同。The optical fiber scanning module according to claim 2, wherein when the optical fiber scanner includes two or more scanning optical fibers, the wavelength configuration of the input light source corresponding to each scanning optical fiber is the same.
如权利要求1至3任一项所述的光纤扫描模组，其特征在于，一路所述输入光源中的N组光源为N组激光管光源或N组LED光源。The optical fiber scanning module according to any one of claims 1 to 3, wherein the N light sources in the input light source are N laser light sources or N LED light sources.
如权利要求4所述的光纤扫描模组，其特征在于，所述N等于2。The optical fiber scanning module according to claim 4, wherein the N is equal to two.
一种MEMS扫描模组，包括MEMS扫描器和发光光源，其特征在于，所述发光光源包括N组光源，每组光源至少包括R、G、B三种发光单元，所述N组光源中相同色彩通道的发光单元被配置为发射不同波长的光，N为大于等于2的整数。A MEMS scanning module includes a MEMS scanner and a light emitting light source, wherein the light emitting light source includes N groups of light sources, and each group of light sources includes at least three types of light emitting units: R, G, and B. The N groups of light sources are the same The light emitting unit of the color channel is configured to emit light of different wavelengths, and N is an integer of 2 or more.
如权利要求6所述的MEMS扫描模组，其特征在于，所述N组光源出射的光线合束后射向所述MEMS扫描器。The MEMS scanning module according to claim 6, wherein the light rays emitted from the N groups of light sources are combined and emitted toward the MEMS scanner.
如权利要求6或7所述的MEMS扫描模组，其特征在于，所述发光光源中的N组光源为N组激光管光源或N组LED光源。The MEMS scanning module according to claim 6 or 7, wherein the N groups of light sources in the light emitting light source are N groups of laser tube light sources or N groups of LED light sources.
一种基于波导的显示模组，其特征在于，包括：A waveguide-based display module is characterized in that it includes:

图像分割单元，用于将待显示图像分割为M个子图像，M为大于等于2的整数；An image segmentation unit, configured to segment an image to be displayed into M sub-images, where M is an integer greater than or equal to 2;

图像产生单元，包括一个或多个图像产生子单元，当图像产生单元包含至少两个图像产生子单元时，各图像产生子单元发光波长配置相同；每个所述图像产生子单元通过波分复用的方式调制出N个子图像的混合光束，每个所述图像产生子单元所产生的N个子图像光束中的相同色彩光束具有不同波长，N为大于等于2的整数；所述图像产生单元通过一个或多个图像产生子单元将所述M个子图像同时调制射出，经准直光学***准直后形成包含M个子图像光束的待显示图像混合光束；An image generation unit includes one or more image generation sub-units. When the image generation unit includes at least two image generation sub-units, the light emission wavelength configuration of each image generation sub-unit is the same; each of the image generation sub-units undergoes wavelength division multiplexing. A mixed light beam of N sub-images is modulated in a manner, and the same color light beams in the N sub-image light beams produced by each of the image generation sub-units have different wavelengths, and N is an integer greater than or equal to 2; the image generation unit passes One or more image generating sub-units modulating and outputting the M sub-images at the same time, and collimating through a collimating optical system to form a mixed light beam to be displayed including M sub-image light beams;

波导模组，设置在所述图像产生单元的出光光路上，波导模组具有多层耦入单元和多层耦出单元，每层耦入单元被配置为耦入不同波长范围的光，所述图像产生单元产生的待显示图像混合光束经波导模组耦出单元耦出后的出射图像拼接为所述待显示图像。The waveguide module is disposed on the light output optical path of the image generating unit. The waveguide module has a multi-layer coupling unit and a multi-layer coupling unit. Each coupling unit is configured to couple light of different wavelength ranges. The mixed image of the to-be-displayed image generated by the image generation unit is spliced into the to-be-displayed image after being coupled out by the waveguide module coupling unit.
如权利要求9所述的显示模组，其特征在于，当所述图像产生单元通过多个图像产生子单元将所述M个子图像同时调制射出时，多个图像产生子单元的光束在入射到波导模组前相互拼接。The display module according to claim 9, wherein when the image generating unit modulates and outputs the M sub-images through a plurality of image generating sub-units at the same time, the light beams of the plurality of image generating sub-units are incident on The waveguide modules are spliced to each other.
如权利要求10所述的显示模组，其特征在于，当每个子图像由R、G、B三种发光单元调制时，所述波导模组包括3*N层耦入单元和3*N层耦出单元，除最后一层耦入单元外，其他每层耦入单元被分别配置成只耦入待显示图像混合光束中一个波长的光束，所述耦入单元为反射式光栅或滤光片。The display module according to claim 10, wherein when each sub-image is modulated by three types of light emitting units: R, G, and B, the waveguide module includes a 3 * N layer coupling unit and a 3 * N layer Coupling unit, except for the coupling unit of the last layer, the coupling units of each layer are respectively configured to couple only one wavelength of the mixed light beam of the image to be displayed. The coupling unit is a reflective grating or a filter. .
如权利要求10所述的显示模组，其特征在于，所述波导模组包括N层堆叠设置的波导基片，当每个子图像由R、G、B三种发光单元调制时，除所述N层堆叠设置的波导基片的最后一层耦入单元外，其他每层波导基片的耦入单元为滤光片，每片滤光片被设计为反射对应子图像光束的RGB三波段光且透射其他波段光。The display module according to claim 10, wherein the waveguide module comprises N-layer stacked waveguide substrates, and when each sub-image is modulated by three kinds of light-emitting units of R, G, and B, The last layer of waveguide substrates stacked in N layers is coupled outside the unit. The coupling unit of each other waveguide substrate is a filter. Each filter is designed to reflect the RGB three-band light corresponding to the sub-image beam. And transmit light in other bands.
如权利要求10所述的显示模组，其特征在于，当每个子图像由R、G、B三种发光单元调制时，所述波导模组包括3*N层耦入单元和3*N层耦出单元，除最后一层耦入单元外，其他耦入单元均采用长波通滤光片或短波通滤光片；当耦入单元均采用长波通滤光片时，第一层耦入单元至倒数第二层耦入单元的长波通滤光片的截止波长逐渐升高，当耦入单元均采用短波通滤光片时，第一层耦入单元至倒数第二层耦入单元的短波通滤光片的截止波长逐渐降低；每层耦入单元只耦入待显示图像混合光束中一个波长的光束。The display module according to claim 10, wherein when each sub-image is modulated by three types of light emitting units: R, G, and B, the waveguide module includes a 3 * N layer coupling unit and a 3 * N layer Coupling unit, except for the last layer of coupling unit, all other coupling units use long pass filters or short pass filters; when the coupling unit uses long pass filters, the first layer is coupled to the unit The cut-off wavelength of the long-pass filter to the penultimate layer coupling unit gradually increases. When the short-pass filter is used as the coupling unit, the short wave from the first-layer coupling unit to the penultimate-layer coupling unit The cut-off wavelength of the pass filter is gradually reduced; each layer of the coupling unit is only coupled to a beam of one wavelength in the mixed beam of the image to be displayed.
如权利要求11至13任一项所述的显示模组，其特征在于，所述耦出单元为耦出光栅或耦出反射镜阵列。The display module according to any one of claims 11 to 13, wherein the decoupling unit is a decoupling grating or a decoupling mirror array.
如权利要求14所述的显示模组，其特征在于，所述每组波导模组中均设置有中继单元，用于沿垂直于耦出单元的扩瞳方向的方向扩瞳。The display module according to claim 14, wherein a relay unit is provided in each group of waveguide modules for dilating pupils in a direction perpendicular to the dilation direction of the decoupling unit.
如权利要求14所述的显示模组，其特征在于，所述图像分割单元分割出的多个子图像中相邻子图像具有相同图像区域。The display module according to claim 14, wherein adjacent sub-images among the plurality of sub-images segmented by the image segmentation unit have the same image area.
如权利要求9至13任一项所述的显示模组，其特征在于，所述图像产生单元为权利要求1至5任一项所述的光纤扫描模组。The display module according to any one of claims 9 to 13, wherein the image generating unit is the fiber optic scanning module according to any one of claims 1 to 5.
如权利要求9至13任一项所述的显示模组，其特征在于，所述图像产生子单元为权利要求6至8任一项所述的MEMS扫描模组。The display module according to any one of claims 9 to 13, wherein the image generation subunit is the MEMS scanning module according to any one of claims 6 to 8.
一种显示设备，其特征在于，包括至少一组权利要求9至18任一项所述基于波导A display device, comprising at least one waveguide-based waveguide according to any one of claims 9 to 18