WO2021179770A1

WO2021179770A1 - Wavelength conversion apparatus, light source system and projection device

Info

Publication number: WO2021179770A1
Application number: PCT/CN2020/142134
Authority: WO
Inventors: 胡飞; 杨炳柯; 李屹
Original assignee: 深圳光峰科技股份有限公司
Priority date: 2020-03-13
Filing date: 2020-12-31
Publication date: 2021-09-16
Also published as: CN113391508A

Abstract

A wavelength conversion apparatus (107), comprising a first section (A) and a second section (B), wherein at least one inclined reflection slope (1071) is provided on the first section (A), and is used to receive incident light incident on the first section (A) and make reflected outgoing light exit on an optical path different from that of the incident light by means of the inclined reflection slope (1071); and the second section (B) is provided with a wavelength conversion material, which is used to receive incident light incident on the second section (B), and emit outgoing light the wavelength of which is different from that of the incident light. Thus, the light incident on the first section (A) and then reflected, and the light emitted from the second section (B) may be emitted from the wavelength conversion apparatus (107) on different optical paths, and thus a rear optical path may be designed separately for the light reflected by the first section (A) and the light emitted from the second section (B), which makes the optical path structure more flexible and more adaptable.

Description

一种波长转换装置、光源***及投影设备Wavelength conversion device, light source system and projection equipment

【技术领域】【Technical Field】

本申请涉及光学投影领域，尤其涉及一种波长转换装置、光源***及投影设备。This application relates to the field of optical projection, in particular to a wavelength conversion device, a light source system and a projection device.

【背景技术】【Background technique】

在相关技术中，实现激光与荧光合光直接发出白光的典型方案主要有以下几种：In related technologies, the typical schemes for realizing the direct emission of white light from the combination of laser and fluorescence mainly include the following:

一种方案是利用光学元件的区域透反特性，令分光合光镜的中心区域镀膜与周围区域镀膜不同，其中，中心区域为透蓝反黄，而周围区域则在可见光波长范围全部反射。第一光经过会聚透镜会聚后，在分光合光镜位置会聚成面积很小的一个光斑，从中心区域透射过去，然后经过收集透镜，在波长转换装置上激发荧光。通过控制荧光材料的混合比例，可以使得部分蓝光激发荧光粉，转换为荧光，另外的一部分蓝光被散射成与荧光的光学扩展量相当的朗伯光，此时荧光与蓝光混合达到白平衡。此后，被散射的蓝光到达分光合光镜处；此时，周围区域的蓝光被反射进入后方光学***，而中心区域的蓝光会透射过去损失掉。One solution is to make use of the regional transmission and reflection characteristics of the optical element to make the coating of the central area of the beam splitter and the surrounding area different. The central area is transparent and blue, while the surrounding area is all reflected in the visible wavelength range. After the first light is condensed by the condensing lens, it is condensed into a small spot at the position of the light splitting and combining lens, transmitted through the central area, and then passed through the collecting lens to excite fluorescence on the wavelength conversion device. By controlling the mixing ratio of the fluorescent material, part of the blue light can excite the phosphor and be converted into fluorescence, and the other part of the blue light is scattered into Lambertian light equivalent to the optical extension of the fluorescence. At this time, the fluorescence and blue light are mixed to achieve white balance. After that, the scattered blue light reaches the light splitting and combining mirror; at this time, the blue light in the surrounding area is reflected into the rear optical system, and the blue light in the central area will be lost through transmission.

另一种方案是在分光合光镜的前表面镀一层蓝光分光膜，反射一部分蓝光，并透射另一部分的蓝光，反射蓝光和透射蓝光的透反比例会影响光源最终出光的白光色坐标；分光合光镜的后表面仍然是镀透蓝反黄的膜层。激光光源发出的激光束在分光合光镜的前表面被分成透射的蓝光光束和反射的蓝光光束，其中透射的蓝光光束会在色轮处激发产生荧光，荧光经分光合光镜反射进入后方光路；被分出来的反射的蓝光光束会被散射片散射成朗伯光，被散射的蓝光光束到达分光合光镜。此时，被散射的蓝光光束会被再次分光，其中部分蓝光透射过分光合光镜，作为蓝色基色光进入后方光路，而部分蓝光光束则因被反射而损失掉。Another solution is to plate a blue light splitting film on the front surface of the light splitter and combiner to reflect part of the blue light and transmit another part of the blue light. The ratio of the reflected blue light and the transmitted blue light will affect the final white light color coordinates of the light source; The back surface of the photosynthetic mirror is still plated with a blue and anti-yellow film. The laser beam emitted by the laser light source is divided into a transmitted blue light beam and a reflected blue light beam on the front surface of the light splitting and combining mirror. The transmitted blue light beam will excite fluorescence at the color wheel, and the fluorescence will be reflected by the light splitting and combining mirror to enter the rear light path. ; The separated reflected blue light beam will be scattered into Lambertian light by the diffuser, and the scattered blue light beam will reach the light splitting and combining mirror. At this time, the scattered blue light beam will be split again, and part of the blue light will pass through the light splitter and combiner and enter the rear optical path as the blue primary color light, while part of the blue light beam will be lost due to reflection.

上述两种光源***的方案中，在对第一光和荧光进行合光时，会不可避免的造成第一光的损耗，降低了第一光的利用率，影响最终投影设备的显示效果。In the above two light source system solutions, when the first light and the fluorescent light are combined, the loss of the first light will inevitably be caused, the utilization rate of the first light is reduced, and the display effect of the final projection device is affected.

【发明内容】[Summary of the invention]

本申请的目的在于提供一种波长转换装置、光源***及投影设备，可减少光源***的光损耗。The purpose of this application is to provide a wavelength conversion device, a light source system, and a projection device, which can reduce the light loss of the light source system.

为了实现上述目的，一方面本申请提出一种波长转换装置，该波长转换装置包括第一区段和第二区段，所述第一区段上设置有至少一个倾斜反射斜面，用于接收入射所述第一区段的入射光并通过所述倾斜反射斜面令反射的出射光以不同于所述入射光的光路出射；所述第二区段设置有波长转换材料，用于接收入射所述第二区段的入射光，并出射波长不同所述入射光的出射光。In order to achieve the above objective, on the one hand, this application proposes a wavelength conversion device. The wavelength conversion device includes a first section and a second section. The first section is provided with at least one inclined reflection slope for receiving incident light. The incident light of the first section makes the reflected outgoing light exit through the oblique reflection inclined surface in an optical path different from the incident light; the second section is provided with a wavelength conversion material for receiving the incident light The incident light in the second section emits the incident light with different wavelengths.

另一方面本申请提出一种光源***，该光源***包括第一光源组件、第一导光组件、第一合光组件以及上述波长转换装置；其中，On the other hand, this application proposes a light source system, which includes a first light source component, a first light guide component, a first light combining component, and the above-mentioned wavelength conversion device; wherein,

所述第一光源组件用于发射第一光；The first light source assembly is used to emit first light;

所述第一导光组件设置于第一光的传输路径上，用于将所述第一光引导至所述波长转换装置；The first light guide component is arranged on the transmission path of the first light, and is used to guide the first light to the wavelength conversion device;

所述波长转换装置包括基于所述第一光不发生波长转换的第一区段，以及基于所述第一光而出射第二光的第二区段；所述第一区段上设置有至少一个倾斜反射斜面，通过所述倾斜反射斜面令反射的第一光以不同于入射至所述第一区段的第一光的光路入射至所述第一合光组件；所述第二区段用于接收所述第一光并向所述第一合光组件出射所述第二光；其中，所述第一光和所述第二光的波长范围不同；The wavelength conversion device includes a first section that does not perform wavelength conversion based on the first light, and a second section that emits second light based on the first light; the first section is provided with at least An oblique reflection oblique surface through which the reflected first light enters the first light combining component through an optical path different from that of the first light incident to the first section; the second section For receiving the first light and emitting the second light to the first light combining component; wherein the wavelength ranges of the first light and the second light are different;

所述第一合光组件接收所述经过所述倾斜反射斜面反射的第一光和所述第二光，并引导至相同的出射光通道。The first light combining component receives the first light and the second light reflected by the inclined reflection slope, and guides the first light and the second light to the same exit light channel.

另一方面本申请提出一种投影设备，该投影设备包括光源子***和光机子***，其中，所述光源子***向所述光机子***出射投影光，所述光机子***接收所述投影光并基于所述投影光进行调制形成与待显示画面对应的图像光，以使所述图像光能够在投影平面上显示；其中，所述光源子***为上述光源***。On the other hand, this application proposes a projection device that includes a light source subsystem and an opto-mechanical subsystem, wherein the light source subsystem emits projection light to the opto-mechanical subsystem, and the opto-mechanical subsystem receives the projection light and Based on the projection light, modulation is performed to form image light corresponding to the picture to be displayed, so that the image light can be displayed on the projection plane; wherein, the light source subsystem is the light source system described above.

本申请的该波长转换装置包括第一区段和第二区段，所述第一区段上设置有至少一个倾斜反射斜面，用于接收入射所述第一区段的入射光并通过所述倾斜反射斜面令反射的出射光以不同于所述入射光的光路出射；所述第二区段设置有波长转换材料，用于接收入射所述第二区段的入射光，并出射波长不同所述入射光的出射光。由此，可将入射至第一区段后被反射光与第二区段出射的光以不同的光路从波长转换装置出射，进而可分别对被第一区段反射的光与第二区段出射的光分别设计后方光路，令光路结构更加灵活，适应性强。The wavelength conversion device of the present application includes a first section and a second section. The first section is provided with at least one oblique reflection inclined surface for receiving incident light incident on the first section and passing through the first section. The oblique reflection slope makes the reflected outgoing light exit in an optical path different from the incident light; the second section is provided with a wavelength conversion material for receiving the incident light incident to the second section, and the emitted light has a different wavelength. The exit light of the incident light. In this way, the reflected light after incident on the first section and the light emitted from the second section can be emitted from the wavelength conversion device through different optical paths, and the light reflected by the first section and the light reflected by the second section can be respectively emitted from the wavelength conversion device. The rear light path is designed separately for the emitted light, which makes the light path structure more flexible and adaptable.

【附图说明】【Explanation of the drawings】

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

图1为相关技术中的激光荧光光源***第一实施例结构示意图；Fig. 1 is a schematic structural diagram of a first embodiment of a laser fluorescent light source system in the related art;

图2为相关技术中的激光荧光光源***第二实施例结构示意图；2 is a schematic structural diagram of a second embodiment of a laser fluorescent light source system in the related art;

图3a为本申请波长转换装置中第一区段的倾斜反射斜面一实施方式的结构示意图；FIG. 3a is a schematic structural diagram of an embodiment of the inclined reflection slope of the first section of the wavelength conversion device of the present application; FIG.

图3b为本申请波长转换装置中第一区段的倾斜反射斜面另一实施方式的结构示意图；3b is a schematic structural diagram of another embodiment of the inclined reflection slope of the first section of the wavelength conversion device of the present application;

图3c为本申请波长转换装置中第一区段的倾斜反射斜面又一实施方式的结构示意图；3c is a schematic structural diagram of another embodiment of the inclined reflection slope of the first section of the wavelength conversion device of the present application;

图3d为本申请波长转换装置中第一区段的倾斜反射斜面再一实施方式的结构示意图；3d is a schematic structural diagram of still another embodiment of the inclined reflection slope of the first section of the wavelength conversion device of the present application;

图4a为本申请波长转换装置一实施方式的结构示意图；4a is a schematic structural diagram of an embodiment of a wavelength conversion device according to the present application;

图4b为本申请波长转换装置另一实施方式的结构示意图；4b is a schematic structural diagram of another embodiment of the wavelength conversion device of this application;

图5为本申请光源***一实施例的结构示意图；FIG. 5 is a schematic structural diagram of an embodiment of a light source system according to this application;

图6为图5所示的光源***在另一视角下的结构示意图；Fig. 6 is a schematic structural diagram of the light source system shown in Fig. 5 from another viewing angle;

图7为本申请光源***中第一导光组件一实施方式的结构示意图；FIG. 7 is a schematic structural diagram of an embodiment of the first light guide component in the light source system of this application;

图8为本申请光源***另一实施例的结构示意图；FIG. 8 is a schematic structural diagram of another embodiment of a light source system according to this application;

图9为本申请光源***又一实施例的结构示意图；FIG. 9 is a schematic structural diagram of another embodiment of a light source system according to this application;

图10为本申请投影设备一实施例的结构示意图。FIG. 10 is a schematic structural diagram of an embodiment of a projection device according to this application.

【具体实施方式】【Detailed ways】

下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

现有技术中，通过采用以荧光反射镜作为分光合光元件对激发光进行分光，令部分激发光被引导至波长转换装置以激发荧光材料产生荧光，另一部分激发光作为一种基色光，进而令荧光和作为基色光的部分激发光在荧光反射镜处进行合光，从而实现激光与荧光合光直接发出白光，通常采用的技术方案主要包括以下两种：In the prior art, a fluorescent mirror is used as a light-splitting and combining element to split the excitation light, so that part of the excitation light is guided to the wavelength conversion device to excite the fluorescent material to produce fluorescence, and the other part of the excitation light is used as a primary color light. The fluorescence and the part of the excitation light as the primary color light are combined at the fluorescence reflector to realize the direct emission of white light from the combined light of the laser and the fluorescence. The usual technical solutions mainly include the following two:

第一种技术方案如图1所示，荧光反射镜设置成区域镀膜的反射激光，其中心区域镀膜镀透蓝反黄膜，而周围区域镀透射膜或增透膜。作为激发光的激光经过会聚透镜会聚后，在荧光反射镜位置处会聚成面积很小的一个光斑，从荧光反射镜的中心区域透射，然后经过收集透镜组，在波长转换装置上激发产生荧光。通过控制荧光材料的混合比例，可以使得部分激光激发荧光粉，转换为荧光，另外的一部分激光被散射成与荧光的光学扩展量相当的朗伯光，此时荧光与激光混合达到白平衡。此后，被散射的激光到达荧光反射镜处；此时，入射荧光反射镜的周围区域的激光被反射进入后方光学***，而入射荧光反射镜的中心区域的激光会因透射而损失掉。The first technical solution is shown in Figure 1. The fluorescent mirror is set to reflect laser light with area coating, the center area is coated with blue and anti-yellow film, and the surrounding area is coated with transmissive film or anti-reflection film. After the excitation light is condensed by the condensing lens, it condenses into a small spot at the position of the fluorescent mirror, transmits through the central area of the fluorescent mirror, and then passes through the collection lens group to excite fluorescence on the wavelength conversion device. By controlling the mixing ratio of the fluorescent material, part of the laser light can excite the phosphor and convert it into fluorescence, and the other part of the laser light is scattered into Lambertian light equivalent to the optical extension of the fluorescence. At this time, the fluorescence and the laser are mixed to achieve white balance. After that, the scattered laser light reaches the fluorescent mirror; at this time, the laser light incident on the surrounding area of the fluorescent mirror is reflected into the rear optical system, and the laser light incident on the central area of the fluorescent mirror will be lost due to transmission.

第二种技术方案如图2所示，荧光反射镜的面向激光光源的前表面镀了一层与激光对应的分光膜，该分光膜可按预设分光比例反射一部分激光，并透射另一部分的激光，该预设分光比例会影响光源最终出光的白光色坐标。以激光光源为蓝光为例，激光为蓝光，荧光反射镜的朝向波长转换装置的后表面镀有透蓝反黄的膜层。激光光源发出的蓝光在荧光反射镜的前表面以预设反光比例被分成透射的蓝光和反射的蓝光，其中透射的蓝光会在波长转换装置处激发产生荧光，荧光经荧光收集透镜组收集后被荧光反射镜反射入后方光路；被反射的蓝光则入射散射片，在散射片处被散射成朗伯光，被散射的蓝光经蓝光收集透镜后入射荧光反射镜；此时，被散射的蓝光会被再次分光，其中一部分的蓝光透射过荧光反射镜作为蓝色基色光进入后方光路，而另一部分蓝光光束则因被反射而损失掉。The second technical solution is shown in Figure 2. The front surface of the fluorescent mirror facing the laser light source is coated with a dichroic film corresponding to the laser. For lasers, the preset light splitting ratio will affect the final white light color coordinates of the light source. Taking blue light as the laser light source as an example, the laser light is blue light, and the rear surface of the fluorescent mirror facing the wavelength conversion device is plated with a blue translucent and yellow transmissive film. The blue light emitted by the laser light source is divided into transmitted blue light and reflected blue light on the front surface of the fluorescent mirror with a preset reflection ratio. The transmitted blue light will be excited at the wavelength conversion device to produce fluorescence, and the fluorescence will be collected by the fluorescence collecting lens group. The fluorescent mirror reflects into the rear light path; the reflected blue light enters the diffuser, where it is scattered into Lambertian light, and the scattered blue light enters the fluorescent mirror after passing through the blue collecting lens; at this time, the scattered blue light will be After being split again, part of the blue light is transmitted through the fluorescent mirror and enters the rear optical path as the blue primary light, while the other part of the blue light beam is lost due to reflection.

上述的两种光源***方案中，由于荧光反射镜对激发光始终是部分反射部分透射的，因此在对蓝光和荧光进行合光时会不可避免的造成蓝光的损耗，降低了激发光的利用率，减小投影设备的图像亮度，最终影响投影设备的显示效果。In the above two light source system solutions, because the fluorescent mirror is always partially reflecting and partially transmitting the excitation light, it will inevitably cause the loss of blue light when combining the blue light and the fluorescent light, which reduces the utilization rate of the excitation light. , Reduce the image brightness of the projection device, and ultimately affect the display effect of the projection device.

本实施例的波长转换装置包括第一区段和第二区段，所述第一区段上设置有至少一个倾斜反射斜面，用于接收入射所述第一区段的入射光并通过所述倾斜反射斜面令反射的出射光以不同于所述入射光的光路出射；所述第二区段设置有波长转换材料，用于接收入射所述第二区段的入射光，并出射波长不同所述入射光的出射光。由此，可将入射至第一区段后被反射光与第二区段出射的光以不同的光路从波长转换装置出射，进而可分别对被第一区段反射的光与第二区段出射的光分别设计后方光路，令光路结构更加灵活，适应性更强。The wavelength conversion device of this embodiment includes a first section and a second section. The first section is provided with at least one oblique reflection inclined surface for receiving incident light incident on the first section and passing through the first section. The oblique reflection slope makes the reflected outgoing light exit in an optical path different from the incident light; the second section is provided with a wavelength conversion material for receiving the incident light incident to the second section, and the emitted light has a different wavelength. The exit light of the incident light. In this way, the reflected light after incident on the first section and the light emitted from the second section can be emitted from the wavelength conversion device through different optical paths, and the light reflected by the first section and the light reflected by the second section can be respectively emitted from the wavelength conversion device. The rear light path is designed separately for the emitted light, which makes the light path structure more flexible and adaptable.

本申请提出一种波长转换装置，该波长转换装置上设置有多个区段，其中，第一区段上可不设置波长转换材料，进而不会基于入射第一区段的光而发生波长转换；进一步，第一区段上设置有至少一个倾斜反射斜面，第一区段可接收入射第一区段的光并通过倾斜反射斜面令反射的光以不同于的光路出射。第二区段上具有波长转换材料，可基于入射第二区段的光而发生波长转换材料，进而出射波段范围不同的光。The present application proposes a wavelength conversion device. The wavelength conversion device is provided with a plurality of sections, wherein the first section may not be provided with a wavelength conversion material, so that no wavelength conversion occurs based on the light incident to the first section; Further, at least one oblique reflection slope is provided on the first section, and the first section can receive the light incident to the first section and make the reflected light exit through a different light path through the oblique reflection slope. The second section has a wavelength conversion material, and the wavelength conversion material can be generated based on the light incident in the second section, and then light with a different wavelength range is emitted.

如图3a至图3b所示，波长转换装置107上的第一区段的倾斜反射斜面可由具有倾斜反射面的凸起结构构成，如图3a所示，可在波长转换装置107的第一区段上设置一个三角形凸起结构，由三角形凸起结构的斜面作为该倾斜反射斜面；此外，也可如图3b所示，在波长转换装置107的第一区段上设置两个斜面相对于的三角形凸起结构，由两个三角形凸起结构的相对的两个倾斜面作为倾斜反射斜面。As shown in FIGS. 3a to 3b, the inclined reflection inclined surface of the first section of the wavelength conversion device 107 can be composed of a convex structure with an inclined reflection surface. As shown in FIG. 3a, the first area of the wavelength conversion device 107 A triangular convex structure is provided on the section, and the slope of the triangular convex structure is used as the inclined reflection slope; in addition, as shown in FIG. 3b, two slopes are arranged on the first section of the wavelength conversion device 107 relative to In the triangular convex structure, two opposite inclined surfaces of the two triangular convex structures are used as inclined reflection inclined surfaces.

进一步，如图3c至图3d所示，波长转正装置107上的第一区段的倾斜反射斜面也可由在第一区段上设置的凹槽构成，凹槽的侧面相对于凹槽底面倾斜以构成第一区段上的倾斜反射斜面。如图3c所示，该凹槽可为三角形凹槽，三角形凹槽的倾斜面即可作为第一区段上的倾斜反射斜面。此外，也可如图3d所示，该凹槽也可为梯形凹槽，由梯形凹槽的两个相对的倾斜反射斜面构成第一区段上的倾斜反射斜面。Furthermore, as shown in FIGS. 3c to 3d, the inclined reflection inclined surface of the first section on the wavelength correction device 107 may also be formed by a groove provided on the first section, and the side surface of the groove is inclined relative to the bottom surface of the groove. The inclined reflection slope on the first section is formed. As shown in FIG. 3c, the groove may be a triangular groove, and the inclined surface of the triangular groove may be used as the inclined reflecting inclined surface on the first section. In addition, as shown in FIG. 3d, the groove may also be a trapezoidal groove, and two opposite inclined reflection inclined surfaces of the trapezoidal groove constitute the inclined reflection inclined surface on the first section.

进一步，本实施例中波长转换装置107可为如图4a所示的板状波长转换装置或如图4b所示桶形波长转换装置，第一区段A不基于入射的光进行波长转换，且设置有至少一倾斜反射斜面，第二区域B中包含有波长转换材料，可基于入射的光而产生波长转换后出射波段范围不同的光。本实施例中，波长转换装置107的第一区段A上的倾斜反射斜面在第一区段上可连续设置，如图7a和图7b中的第一区段A上的阴影填充区域所示；在其他实施方式在，第一区段A上的倾斜反射斜面可对应于入射的光的脉冲时序间隔设置而间隔设置。Further, the wavelength conversion device 107 in this embodiment may be a plate-shaped wavelength conversion device as shown in FIG. 4a or a barrel-shaped wavelength conversion device as shown in FIG. 4b, and the first section A does not perform wavelength conversion based on incident light, and At least one oblique reflection inclined surface is provided, and the second area B contains a wavelength conversion material, which can generate light with different wavelength ranges after wavelength conversion based on the incident light. In this embodiment, the oblique reflection slope on the first section A of the wavelength conversion device 107 can be continuously arranged on the first section, as shown in the hatched area on the first section A in FIG. 7a and FIG. 7b In other embodiments, the oblique reflection slopes on the first section A can be arranged at intervals corresponding to the pulse timing interval of the incident light.

进一步，本申请提出一种光源***，该光源***包括第一光源组件、第一导光组件、波长转换装置及第一合光组件。第一光源组件用于出射第一光，第一光被第一导光组件引导至波长转换装置；波长转换装置上设置有多个区段，其中，基于第一光不产生波长转换的区段为第一区段，基于第一光产生波长转换而出射第二光区段为第二区段，其中，第二光的波段范围与第一光的波段范围不同。波长转换装置连接有一驱动装置，波长转换装置在驱动装置的驱动下周期性运动以使第一区段和第二区段时序的暴露于第一光的光路上。进一步，第二区段设置有波长转换材料，当第二区段暴露于第一光的光路上时，被引导至第二区段的第一光被波长转换材料吸收进而激发产生第二光；第一区段上设置有至少一个倾斜反射斜面，当第一区段暴露于第一光的光路上时，被引导至第一区段的第一光入射在至少一个倾斜反射斜面上被反射。本申请中，第一光相对于第一区段和第二区段的入射区域均垂直入射，第二区段出射的第二光被垂直反射，第一区段反射的第一光则基于倾斜反射斜面的以一倾角反射，由此第二区段出射的第二光和被反射的第一光在波长转换装置之后的光路不重叠，以不同的光路被引导至第一合光组件处进行合光。其中，该波长转换装置可为图3至图4所示的任意实施例的波长转换装置，具体结构请参见上述描述，此处不再赘述。Furthermore, the present application provides a light source system, which includes a first light source component, a first light guide component, a wavelength conversion device, and a first light combining component. The first light source assembly is used to emit the first light, and the first light is guided by the first light guide assembly to the wavelength conversion device; the wavelength conversion device is provided with a plurality of sections, wherein the section does not generate wavelength conversion based on the first light It is the first section, and the second light is emitted based on the wavelength conversion of the first light. The second light is the second section, wherein the wavelength range of the second light is different from the wavelength range of the first light. The wavelength conversion device is connected with a driving device, and the wavelength conversion device periodically moves under the driving of the driving device so that the first section and the second section are sequentially exposed to the optical path of the first light. Further, the second section is provided with a wavelength conversion material, and when the second section is exposed to the optical path of the first light, the first light guided to the second section is absorbed by the wavelength conversion material to be excited to generate the second light; At least one oblique reflection slope is provided on the first section, and when the first section is exposed to the optical path of the first light, the first light guided to the first section is incident on the at least one oblique reflection slope to be reflected. In this application, the first light is incident vertically with respect to the incident areas of the first section and the second section, the second light emitted from the second section is reflected vertically, and the first light reflected by the first section is based on the tilt The reflective slope is reflected at an inclination angle, so that the second light emitted from the second section and the reflected first light do not overlap the optical paths behind the wavelength conversion device, and are guided to the first light combining assembly by different optical paths. Heguang. Wherein, the wavelength conversion device may be the wavelength conversion device of any embodiment shown in FIG. 3 to FIG. 4. For the specific structure, please refer to the above description, which will not be repeated here.

其中，第一光和第二光能够合光形成彩色图像，即第一光和第二光合光后的光谱能够包含三基色光的光谱；以第一光为蓝光为例，第二光可为黄光，或第二光可包括红光和绿光。Among them, the first light and the second light can be combined to form a color image, that is, the spectrum of the first light and the second photosynthesized light can include the spectrum of the three primary colors; taking the first light as blue light as an example, the second light can be Yellow light, or the second light may include red light and green light.

本申请通过在第一区段上设置用于反射第一光的倾斜反射斜面，以使被反射的第一光的光路不同于第二区段激发产生的第二光的光路，由此可在波长转换装置后分别引导第一光和第二光入射至第一合光组件，在各自的光路中可不再设置波长选择元件、区域透射元件或半反半透元件等分光元件，因此在第一光和第二光从波长转换装置出射到入射至第一合光组件的过程中不会出现因光学元件的透反特性而导致的光损耗，可提高投影设备出射的光亮度，提高显示质量。In this application, an inclined reflection slope for reflecting the first light is provided on the first section, so that the optical path of the reflected first light is different from the optical path of the second light generated by the excitation of the second section. After the wavelength conversion device, the first light and the second light are respectively guided to enter the first light combining component. The wavelength selection element, the area transmission element or the semi-transmissive element and other light splitting elements can no longer be arranged in the respective optical paths. Therefore, in the first When the light and the second light are emitted from the wavelength conversion device to the first light combining component, there will be no light loss caused by the transflective characteristics of the optical element, which can increase the brightness of the light emitted by the projection device and improve the display quality.

本申请中，第一导光组件可为区域镀膜的二向色片，其包括中心区域和环绕中心区域的周围区域，其中，中心区域镀有二向色膜，以使该中心区域能够反射与第一光的波长范围对应的光，并透射其他波长范围的光；周围区域镀有透射面或增透膜，以使周围区域能够透射所有波长范围的光。In this application, the first light guide component may be a zone-coated dichroic film, which includes a central area and a surrounding area surrounding the central area, wherein the central area is plated with a dichroic film so that the central area can reflect and The first light corresponds to light in the wavelength range and transmits light in other wavelength ranges; the surrounding area is plated with a transmission surface or an anti-reflection coating so that the surrounding area can transmit light in all wavelength ranges.

本申请中，波长转换装置可为板状波长转换装置或桶形波长转换装置，且第一区段和第二区段均可为多个，且多个第二区段可包括多个第二子区段，其中，多个第二子区段的颜色可相同或不同，满足波长转换装置的第一区段反射的第一光和第二区段出射的第二光的光谱范围至少覆盖三基色光的光谱范围即可，例如第二区段可仅为黄色区段，或第二区段包括红色第二子区段、绿色第二子区段、黄色第二子区段、琥珀色第二子区段等。In this application, the wavelength conversion device may be a plate-shaped wavelength conversion device or a barrel-shaped wavelength conversion device, and there may be multiple first and second sections, and the multiple second sections may include multiple second sections. Sub-sections, wherein the colors of the multiple second sub-sections may be the same or different, satisfying that the spectral ranges of the first light reflected by the first section and the second light emitted by the second section of the wavelength conversion device cover at least three The spectrum range of the primary color light is sufficient. For example, the second section may only be the yellow section, or the second section may include the red second subsection, the green second subsection, the yellow second subsection, and the amber section Two subsections and so on.

本申请中，第一光源组件出射的第一光入射第一导光组件的中心区域，在该中心区域处被反射，并垂直入射至波长转换装置。在波长转换装置的第二区段，第一光被吸收并激发波长转换材料产生出射的第二光，其中，第二光相对于波长转换装置垂直出射；在波长转换装置的第一区段，第一光被倾斜反射斜面以一倾角反射进而相对于入射的第一光的光路发生偏移。由此，被反射的第一光可避开第一导光组件的中心区域而被引导至第一合光组件，即可避免第一光的光损耗，可提高投影设备出射的光亮度，提高显示质量。In the present application, the first light emitted by the first light source assembly enters the central area of the first light guide assembly, is reflected at the central area, and enters the wavelength conversion device perpendicularly. In the second section of the wavelength conversion device, the first light is absorbed and excites the wavelength conversion material to generate emitted second light, wherein the second light exits perpendicularly with respect to the wavelength conversion device; in the first section of the wavelength conversion device, The first light is reflected by the oblique reflection inclined surface at an inclination angle and then is offset relative to the optical path of the incident first light. As a result, the reflected first light can avoid the central area of the first light guide component and be guided to the first light combining component, which can avoid the light loss of the first light, and can increase the brightness of the light emitted by the projection device. Display quality.

请一并参阅图5和图6，图5为本申请光源***一实施例的结构示意图，图6为图5所示的光源***在另一视角下的结构示意图。如图5和图6所示，本实施例的光源***10包括第一光源组件101、第一导光组件104、波长转换装置107及第一合光组件111。第一光源组件101可包括多个光源，用于发射第一光，本实施例中以第一光为蓝光为例，第一光源组件101可包括多个蓝光光源。其中，第一光源组件101包括的多个光源可为激光光源、LED光源等。第一导光组件104设置于第一光源组件101出射的第一光的传输路径上，用于将第一光引导至波长转换装置107。本实施例中，第一导光组件104可为区域镀膜的二向色片，如图7所示，第一导光组件104包括中心区域1041和环绕中心区域1041的周围区域1042，中心区域1041为镀有二向色膜层的镀膜区域，反射与蓝光波段的光，而透射其他波段的光；周围区域1042镀有透射膜或增透膜，第一光源组件101出射的蓝光入射至第一导光组件104的中心区域1041而被反射至波长转换装置107。Please refer to FIGS. 5 and 6 together. FIG. 5 is a schematic structural diagram of an embodiment of a light source system according to the present application, and FIG. 6 is a schematic structural diagram of the light source system shown in FIG. 5 from another perspective. As shown in FIGS. 5 and 6, the light source system 10 of this embodiment includes a first light source component 101, a first light guide component 104, a wavelength conversion device 107 and a first light combining component 111. The first light source assembly 101 may include multiple light sources for emitting first light. In this embodiment, taking the first light as blue light as an example, the first light source assembly 101 may include multiple blue light sources. Wherein, the multiple light sources included in the first light source assembly 101 may be laser light sources, LED light sources, and the like. The first light guide component 104 is disposed on the transmission path of the first light emitted by the first light source component 101 for guiding the first light to the wavelength conversion device 107. In this embodiment, the first light guide component 104 may be a zone-coated dichroic film. As shown in FIG. 7, the first light guide component 104 includes a central area 1041 and a surrounding area 1042 surrounding the central area 1041. The central area 1041 It is the coated area coated with the dichroic film layer, which reflects light in the blue wavelength band, while transmitting light in other wavelength bands; the surrounding area 1042 is coated with a transmissive film or an anti-reflection film, and the blue light emitted by the first light source assembly 101 enters the first The central area 1041 of the light guide component 104 is reflected to the wavelength conversion device 107.

如图5和图6所示，可在第一导光组件104和波长转换装置107之间设置收集透镜组，以对被第一导光组件104反射的第一光进行会聚进而令第一光以较小的光斑入射波长转换装置107。本实施例中，蓝光经过第一导光组件104的中心区域1041反射后的光轴与收集透镜组的光轴重叠。其中，收集透镜组可包括第一收集透镜105和第二收集透镜106。As shown in FIGS. 5 and 6, a collection lens group may be provided between the first light guide component 104 and the wavelength conversion device 107 to converge the first light reflected by the first light guide component 104 to make the first light The wavelength conversion device 107 is incident with a smaller light spot. In this embodiment, the optical axis of the blue light reflected by the central area 1041 of the first light guide component 104 overlaps with the optical axis of the collection lens group. Wherein, the collection lens group may include a first collection lens 105 and a second collection lens 106.

进一步，本实施例中波长转换装置107上设置有多个区段，其中，基于蓝光不产生波长转换的区域为第一区段，基于蓝光激发产生第二光的区段为第二区段。本实施例以第二区段为一个黄色区段为例，黄色区段上包含有黄色荧光材料，能够吸收蓝光，在蓝光的激发下产生并出射黄色荧光。波长转换装置107连接有一驱动装置(图中未示出)，波长转换装置107在驱动装置的驱动下周期性运动以使第一区段和第二区段时序的暴露于蓝光的光路上。进一步，当第二区段经过蓝光的光路上时，被引导至第二区段的蓝光被波长装换装置的第二区段上的黄色荧光材料吸收，进而产生并出射黄色荧光；当第一区段经过蓝光的光束上时，被引导至第一区段的蓝光被第一区段上设置的至少一个倾斜反射斜面反射。其中，蓝光垂直入射波长转换装置107，第二区段出射的黄色荧光也相对于第二区段垂直出射，而被倾斜反射斜面反射的蓝光则以一倾角反射；由此，波长转换装置的第二区段出射的黄色荧光的出射光路相对于蓝激光的入射光路重叠，而被倾斜反射斜面反射的蓝光的光路与入射的蓝光的光路不重叠，进而令第二区段出射的黄色荧光和被第一区段反射的蓝光在波长转换装置107处被分离，以不同的光路出射，并分别被引导至第一合光组件111，在第一合光组件111处被合光。Further, in this embodiment, the wavelength conversion device 107 is provided with a plurality of sections. Among them, the region that does not produce wavelength conversion based on blue light is the first section, and the section that generates second light based on blue excitation is the second section. In this embodiment, the second section is a yellow section as an example. The yellow section contains a yellow fluorescent material, which can absorb blue light, and generates and emits yellow fluorescence under the excitation of the blue light. The wavelength conversion device 107 is connected to a driving device (not shown in the figure), and the wavelength conversion device 107 is driven by the driving device to periodically move so that the first section and the second section are sequentially exposed to the light path of blue light. Further, when the second section passes through the light path of the blue light, the blue light guided to the second section is absorbed by the yellow fluorescent material on the second section of the wavelength conversion device, thereby generating and emitting yellow fluorescence; When the section passes on the light beam of blue light, the blue light guided to the first section is reflected by at least one oblique reflection slope provided on the first section. Among them, the blue light enters the wavelength conversion device 107 vertically, the yellow fluorescence emitted from the second section is also emitted vertically relative to the second section, and the blue light reflected by the oblique reflection slope is reflected at an inclination angle; thus, the second section of the wavelength conversion device The light path of the yellow fluorescent light emitted from the two sections overlaps with the incident light path of the blue laser, while the light path of the blue light reflected by the oblique reflection slope does not overlap with the light path of the incident blue light. The blue light reflected by the first section is separated at the wavelength conversion device 107, exits in different light paths, and is respectively guided to the first light combining component 111, and is combined at the first light combining component 111.

具体的，黄色荧光从波长装换装置的第二区段出射后经过收集透镜106、105，并透射过第一导光组件104后入射至第一合光组件111，本实施例中，第一合光组件111为透黄反蓝的二向色片，由此黄色荧光可透射过第一合光组件111而进一步入射至匀光器件109。进一步参阅图6，图6中的箭头指示了蓝光被第一区段反射的光路，即蓝光入射第一区段后，被第一区段上设置的倾斜反射斜面1071反射，反射后的蓝光的光路与入射的蓝光的光路不重叠，由此，反射后的蓝光不再经过第一导光组件104的中心区域，而是绕过第一导光组件104或透射过第一导光组件104的周围区域，进而入射至第二导光组件110，被第二导光组件110引导至第一合光组件111，蓝光进一步被第一合光组件111反射而进入匀光器件109，由此，在第一合光组件111处实现蓝光和黄色荧光的合光。其中，第二导光组件110可为反射镜110。Specifically, the yellow fluorescent light is emitted from the second section of the wavelength conversion device, passes through the

collection lenses

106, 105, passes through the first light guide assembly 104, and then enters the first light combining assembly 111. In this embodiment, the first The light combining component 111 is a dichroic sheet that transmits yellow and reversed blue, so that the yellow fluorescence can be transmitted through the first light combining component 111 and be further incident on the light homogenizing device 109. Further referring to Figure 6, the arrow in Figure 6 indicates the light path of the blue light reflected by the first section, that is, after the blue light enters the first section, it is reflected by the inclined reflection slope 1071 set on the first section, and the reflected blue light The light path does not overlap with the light path of the incident blue light. Therefore, the reflected blue light no longer passes through the central area of the first light guide component 104, but bypasses the first light guide component 104 or transmits through the first light guide component 104. The surrounding area is further incident on the second light guide assembly 110, and is guided by the second light guide assembly 110 to the first light combining assembly 111. The blue light is further reflected by the first light combining assembly 111 and enters the homogenizing device 109. The first light combining component 111 realizes the light combining of blue and yellow fluorescence. Wherein, the second light guide component 110 may be a reflector 110.

在该实施例中，由于从波长转换装置的第二区段出射的黄色荧光和被第一区段反射的蓝光在波长转换装置处被分离，在共同入射第一合光组件之前在不同的光路中进行传输，在各自的路径中不再设置波长选择元件、区域透射元件或半反半透元件等分光元件，因此在黄色荧光和蓝光从波长转换装置出射到入射至第一合光组件的过程中，均不会出现因光学元件的透反特性而导致的光损耗，提高光利用率，提高最终的光束亮度。In this embodiment, since the yellow fluorescence emitted from the second section of the wavelength conversion device and the blue light reflected by the first section are separated at the wavelength conversion device, they are in different light paths before being incident on the first light combining unit. The wavelength selection element, the area transmission element, or the semi-reflective semi-transparent element and other light splitting elements are no longer installed in the respective paths. Therefore, the yellow fluorescence and blue light are emitted from the wavelength conversion device to enter the first light combining component. In all, there is no light loss caused by the transflective characteristics of the optical element, which improves the light utilization rate and improves the final beam brightness.

本实施例中可采用多种方式设置第一区段上的倾斜反射斜面。本实施例以图3d所示的梯形凹槽为例，其具有两个相对的两个倾斜反射斜面1071，如图6所示，第一光源组件101出射的蓝光被第一导光组件104的中心区域反射后沿收集透镜105、106的光轴垂直入射至第一个倾斜反射斜面1071，被第一个倾斜反射斜面1071反射至相对的第二个倾斜反射斜面1071，最终被第二个倾斜反射斜面1071反射后离开波长转换装置；由于第一个倾斜反射斜面和第二个倾斜反射斜面的倾斜角均为45°；由此，蓝光被第二个倾斜反射斜面反射后平行于收集透镜106、105的光轴出射，且相对于收集透镜106、105的光轴在光源 ***的厚度方向上发生了一定偏移；进一步，被反射的蓝光进入收集透镜106、105后基于收集透镜106、105的会聚作用而发生光路偏移，令被反射的蓝光从第一导光组件104的周围区域1042入射至反射镜110，或绕开第一导光组件104入射至反射镜110。In this embodiment, a variety of ways can be used to set the inclined reflection slope on the first section. In this embodiment, the trapezoidal groove shown in FIG. 3d is taken as an example, which has two opposite inclined reflection slopes 1071. As shown in FIG. The central area is reflected along the optical axis of the collecting

lenses

105 and 106 and is incident perpendicularly to the first inclined reflection inclined surface 1071, and is reflected by the first inclined reflection inclined surface 1071 to the opposite second inclined reflection inclined surface 1071, and finally is inclined by the second inclined reflection inclined surface 1071. The reflection inclined surface 1071 leaves the wavelength conversion device after being reflected; since the inclination angles of the first inclined reflection inclined surface and the second inclined reflection inclined surface are both 45°; therefore, the blue light is reflected by the second inclined reflection inclined surface and is parallel to the collection lens 106 The optical axis of, 105 exits, and the optical axis of the

collection lens

106, 105 has a certain offset in the thickness direction of the light source system; further, the reflected blue light enters the

collection lens

106, 105 based on the

collection lens

106, 105 The light path is shifted due to the convergence effect of, so that the reflected blue light enters the mirror 110 from the surrounding area 1042 of the first light guide component 104 or enters the mirror 110 without the first light guide component 104.

在其他实施方式中，也可在第一区段上设置具有两个倾斜反射斜面的三角形凹槽，或如图3c所示的具有一个倾斜反射斜面的三角形凹槽，在其他实施方式中也可在第一区段上设置如图3a或图3b所示的具有至少一个倾斜反射斜面的凸起，以在第一区段上形成至少一个倾斜反射斜面。进一步，根据镜面反射原理，被波长装换装置107反射的蓝光的偏转角度为入射的蓝光相对于倾斜反射斜面的入射角的两倍。由此，当倾斜反射斜面为一个时，为了保证被反射的第一光能够顺利避开第一导光组件104的中心区域出射，倾斜反射斜面的倾角可小于45°。若倾斜反射斜面为梯形凹槽或三角形凹槽中的两个反射面对应的侧面，且倾角可均为的45°In other embodiments, a triangular groove with two inclined reflection slopes may also be provided on the first section, or a triangular groove with one inclined reflection slope as shown in FIG. 3c. In other embodiments, A protrusion having at least one inclined reflection inclined surface as shown in FIG. 3a or FIG. 3b is arranged on the first section to form at least one inclined reflection inclined surface on the first section. Further, according to the principle of specular reflection, the deflection angle of the blue light reflected by the wavelength conversion device 107 is twice the incident angle of the incident blue light with respect to the oblique reflection slope. Therefore, when there is one inclined reflection slope, in order to ensure that the reflected first light can smoothly escape from the central area of the first light guide component 104, the inclination angle of the inclined reflection slope may be less than 45°. If the inclined reflection slope is a trapezoidal groove or a triangular groove corresponding to the two reflection surfaces, and the inclination angle can be 45°

进一步，第二导光组件110可为具有散热材料的反射散射片，进而在对蓝光进行反射的同时对蓝光进行散射，令入射第一合光组件111的蓝光为朗伯光，其光学扩展量与入射第一合光组件111的黄色荧光的光学扩展量相当，提高蓝光和黄色荧光的合光效率，提高两者合光后的光分布更加均匀。Further, the second light guide component 110 may be a reflective scattering sheet with a heat dissipation material, which further diffuses the blue light while reflecting the blue light, so that the blue light incident on the first light combining component 111 is Lambertian light, and its optical extension is The optical expansion amount of the yellow fluorescence incident on the first light combining component 111 is equivalent, and the light combining efficiency of the blue and yellow fluorescence is improved, and the light distribution after the two combined light is more uniform.

进一步参阅图5和图6，本实施例的光源***还可包括设置于第一光源组件101与第一导光组件104之间的光路上的整形收集透镜组，用于对第一光源组件101出射的蓝光进行光斑整形和光斑压缩，以调整蓝光入射至第一导光组件104上的光斑尺寸和/或光斑形状。其中，该整形收集透镜组可包括第二导光组件102和匀光装置103，第二导光组件102可对应于第一光源组件101中的激光光源设置，用于引导并压缩第一光源组件101在第一导光组件104上的光斑尺寸。匀光装置103用于对被压缩后的蓝光进行匀光处理，匀光装置103可为复眼透镜、复眼收集透镜组件、方棒、散射片等光学元件，本申请不做限制。Further referring to FIGS. 5 and 6, the light source system of this embodiment may further include a shaping and collecting lens group arranged on the optical path between the first light source assembly 101 and the first light guide assembly 104, and is used to align the first light source assembly 101 The emitted blue light undergoes spot shaping and spot compression to adjust the spot size and/or spot shape of the blue light incident on the first light guide component 104. Wherein, the shaping collection lens group may include a second light guide assembly 102 and a light homogenizing device 103, and the second light guide assembly 102 may correspond to the laser light source arrangement in the first light source assembly 101, and is used to guide and compress the first light source assembly 101 The spot size on the first light guide component 104. The homogenizing device 103 is used for homogenizing the compressed blue light. The homogenizing device 103 can be an optical element such as a compound eye lens, a compound eye collecting lens assembly, a square rod, a diffuser, etc., which is not limited in this application.

进一步，本实施例的光源***10还可包括中继收集透镜组，该中继收集透镜组包括设置在第一导光组件104和第一合光组件111之间的第一中继透镜108，以及设置在波长转换装置107和第二导光组件110之间的第二中继透镜(图中未画出)，以利用第一中继透镜108和第二中继透镜分别对波长转换装置107出射的黄色荧光和蓝光进行光束整形，分别调制黄色荧光和蓝光的尺寸和/或形状。可以理解的是，第二中继透镜也可设置在第二导光组件110与第一合光组件111之间。Further, the light source system 10 of this embodiment may further include a relay collection lens group including a first relay lens 108 arranged between the first light guide component 104 and the first light combining component 111, And a second relay lens (not shown in the figure) arranged between the wavelength conversion device 107 and the second light guide assembly 110, so that the first relay lens 108 and the second relay lens are used to respectively align the wavelength conversion device 107 The emitted yellow fluorescence and blue light are subjected to beam shaping, and the size and/or shape of the yellow fluorescence and blue light are respectively modulated. It can be understood that the second relay lens may also be disposed between the second light guide component 110 and the first light combining component 111.

在上述实施例中，在波长转换装置的第一区段上设置倾斜反射斜面，进而使得从波长转换装置的第二区段出射的第二光和被第一区段反射的第一光在波长转换装置处以不同的光路出色而被分离，在共同入射第一合光组件之前在不同的光路中进行传输，在各自的路径中不再设置波长选择元件、区域透射元件或半反半透元件等分光元件，因此在第二光和第一光从波长转换装置出射到入射至第一合光组件的过程中，均不会出现因光学元件的透返特性而导致的光损耗，提高了合光效率，增强了显示效果。此外，本实施例中的波长转换装置可采用筒形色轮，进而可缩小光学***的体积，且光源***中包含的光学元件相对简单，进而可达到简化光路、缩小光源体积、降低成本等目的。第一光源组件可选用激光光源，利用激光的光学扩展量小的特点，可进一步提高合光效率。In the above embodiment, the oblique reflection slope is provided on the first section of the wavelength conversion device, so that the second light emitted from the second section of the wavelength conversion device and the first light reflected by the first section are at the wavelength The conversion device is separated by different optical paths, and transmits in different optical paths before being incident on the first light combining component together. There is no longer any wavelength selection element, area transmission element or semi-reflective semi-transparent element in the respective paths. The light splitting element, therefore, when the second light and the first light are emitted from the wavelength conversion device to the first light combining component, there will be no light loss due to the transmissive characteristics of the optical element, which improves the light combining Efficiency, enhanced display effect. In addition, the wavelength conversion device in this embodiment can use a cylindrical color wheel, which can reduce the volume of the optical system, and the optical elements included in the light source system are relatively simple, thereby simplifying the light path, reducing the volume of the light source, and reducing the cost. . A laser light source can be used as the first light source component, which can further improve the light combining efficiency by taking advantage of the small optical extension of the laser.

请参阅图8，图8为本申请光源***另一实施例的结构示意图。如图8所示，该光源***20与图3所示的光源***10类似，本实施例中具有与图3所示的光源***10中的附图标号的光学元件相同，此处不再赘述。本实施例的光源***20与光源***10的区别在于，本实施例中第一导光组件204的中心区域镀有的二向色膜层透射蓝光波段的光而反射其他波段的光，即第一导光组件204的中心区域为透蓝反黄区域，第一导光组件204的周围区域同样镀有透射膜或增透膜，对光具有透射作用。Please refer to FIG. 8, which is a schematic structural diagram of another embodiment of a light source system of this application. As shown in FIG. 8, the light source system 20 is similar to the light source system 10 shown in FIG. . The difference between the light source system 20 of this embodiment and the light source system 10 is that the dichroic film layer plated in the central area of the first light guide component 204 in this embodiment transmits light in the blue wavelength band and reflects light in other wavelength bands, that is, the first The central area of a light guide component 204 is a translucent and yellowish area, and the surrounding area of the first light guide component 204 is also plated with a transmissive film or an anti-reflection film, which has a transmissive effect on light.

进一步，本实施例的光源***20中还包括设置在第一光源组件101和第一导光组件204之间的光束压缩透镜组，用于进一步压缩入射至第一导光组件104上的光斑尺寸，以使入射到波长转换装置107上的光斑的截面更小，从而更易于从空间上将被第一区段反射的蓝光和第二区段出射的黄色荧光分开。其中，光束压缩透镜组可包括相邻设置的正透镜203和负透镜205，在其他实施方式中，还可进一步增加光束压缩透镜组中包含的透镜数量或改变透镜类型。光源***20中，在第一导光组件204和第二导光组件110之间设置有用于对被反射的蓝光进行光束整形的第二中继透镜206。Further, the light source system 20 of the present embodiment further includes a beam compression lens group arranged between the first light source assembly 101 and the first light guide assembly 204 to further compress the size of the light spot incident on the first light guide assembly 104 In order to make the cross section of the light spot incident on the wavelength conversion device 107 smaller, it is easier to spatially separate the blue light reflected by the first section and the yellow fluorescence emitted by the second section. Wherein, the beam compression lens group may include a positive lens 203 and a negative lens 205 arranged adjacently. In other embodiments, the number of lenses included in the beam compression lens group may be further increased or the lens type may be changed. In the light source system 20, a second relay lens 206 for beam shaping the reflected blue light is provided between the first light guide component 204 and the second light guide component 110.

请参阅图9，图9为本申请光源***又一实施例的结构示意图。如图9所示，该光源***30可包括初始光源***100和补充光源***300。本实施例中，初始光源***100可为图3或图8所示的光源***10、20。补充光源***300包括会聚透镜组312、补充光源组件318、补充光匀光组件319、补充光中继透镜320、第三导光组件313、会聚透镜组314。其中，第三导光组件313可为区域镀膜的二向色片，其中心区域镀有二向色膜，以在中心区域反射与补充光源组件318出射的光的波段对应的光，而透射其他波段的光；其周围区域镀可镀透射膜或增透膜。Please refer to FIG. 9, which is a schematic structural diagram of another embodiment of a light source system according to the present application. As shown in FIG. 9, the light source system 30 may include an initial light source system 100 and a supplementary light source system 300. In this embodiment, the initial light source system 100 may be the

light source systems

10 and 20 shown in FIG. 3 or FIG. 8. The supplementary light source system 300 includes a condensing lens group 312, a supplementary light source component 318, a supplementary light homogenizing component 319, a supplementary light relay lens 320, a third light guide component 313, and a condensing lens group 314. Wherein, the third light guide component 313 can be a zone-coated dichroic film, the central area of which is coated with a dichroic film to reflect the light corresponding to the wavelength band of the light emitted by the supplementary light source component 318, and transmit other light sources. Wave band light; the surrounding area is plated with transmissive film or anti-reflection film.

补充光源组件318可为激光光源，相应的，第三导光组件313的中心区域可基于激光的光斑较小而设置的较小。补充光源组件318出射的补充激光入射至第三导光组件313的中心区域后被反射至会聚透镜组314，透过会聚透镜组314进入后方光路。初始光源***100出射的光经过会聚透镜组312后入射至第三导光组件313，经过第三导光组件313透射后进入后方光路。由此，补充光源组件318出射的补充激光和初始光源***100出射的光可在第三导光组件313处合光。可以理解的是，当初始光源***100出射的光入射至第三导光组件313时，由于初始光源***100出射的光包含蓝光波段和黄光波段，因此在第三导光组件313的中心区域会被反射掉一部分与补充光源组件318出射的光的波段对应的光，引起一定程度的光损耗；但由于第三导光组件313的中心区域较小，该损耗较小，可忽略。补充光源组件318可为绿光激光光源组件、红光光源组件等。The supplementary light source component 318 may be a laser light source, and correspondingly, the central area of the third light guide component 313 may be set smaller based on the smaller light spot of the laser. The supplementary laser light emitted by the supplementary light source assembly 318 enters the central area of the third light guide assembly 313 and is reflected to the condensing lens group 314, and enters the rear optical path through the condensing lens group 314. The light emitted by the initial light source system 100 enters the third light guide component 313 after passing through the condensing lens group 312, passes through the third light guide component 313, and enters the rear light path. Thus, the supplementary laser light emitted by the supplementary light source assembly 318 and the light emitted by the initial light source system 100 can be combined at the third light guide assembly 313. It can be understood that when the light emitted by the initial light source system 100 is incident on the third light guide component 313, since the light emitted by the initial light source system 100 includes the blue wavelength band and the yellow light wavelength band, it is in the central area of the third light guide component 313. A part of the light corresponding to the wavelength band of the light emitted by the supplementary light source assembly 318 will be reflected away, causing a certain degree of light loss; but because the central area of the third light guide assembly 313 is small, the loss is small and can be ignored. The supplementary light source assembly 318 may be a green laser light source assembly, a red light source assembly, or the like.

请参阅图10，图10为本申请投影设备一实施例的结构示意图。如图10所示，该投影设备40包括光源子***和光机子***，其中，光源子***用于提供投影光，光机子***包括投影棱镜和空间光调制器，光源子***出射的投影光经过棱镜***的第一棱镜415，被引导至空间光调制器416进行图像调制形成图像光，图像光进一步透过第一棱镜415和第二棱镜417后在投影平面(图中未画出)上进行图像投影。其中，光源子***可为图3、图8或图9所示的光源***10、20、30，具体结构可参见上述对图3、图8或图9所示的光源***的说明，此处不在赘述。Please refer to FIG. 10, which is a schematic structural diagram of an embodiment of a projection device according to the present application. As shown in FIG. 10, the projection device 40 includes a light source subsystem and an optical engine subsystem. The light source subsystem is used to provide projection light, and the optical engine subsystem includes a projection prism and a spatial light modulator. The projection light emitted by the light source subsystem passes through the prism. The first prism 415 of the system is guided to the spatial light modulator 416 for image modulation to form image light, and the image light further passes through the first prism 415 and the second prism 417 and then performs an image on the projection plane (not shown in the figure). projection. Wherein, the light source subsystem may be the

light source system

10, 20, 30 shown in FIG. 3, FIG. 8 or FIG. 9. For the specific structure, please refer to the above description of the light source system shown in FIG. I won't repeat it.

本申请提供的光源***，通过在波长转换装置上的第一区段上设置倾斜反射斜面，其中第一区段为不会基于光源出射的第一光产生波长转换的区段，进而令经过倾斜反射斜面反射的第一光以不同于入射至第一区段的第一光的光路入射至第一合光组件，而由第二区段出射的荧光的光路与入射第二区段的第一光的光路重叠，由此令波长装换装置反射的第一光和其出射的荧光的光路不重叠，进而对波长装换装置反射的第一光和其出射的荧光进行合光时采用不同的光路进行合光，可有效减小第一光的光损耗。In the light source system provided by the present application, the first section of the wavelength conversion device is provided with an oblique reflection inclined surface. The first light reflected by the reflective inclined surface enters the first light combining component through an optical path different from the first light incident to the first section, and the optical path of the fluorescent light emitted from the second section is the same as that of the first light incident to the second section. The light paths overlap, so that the light paths of the first light reflected by the wavelength conversion device and the fluorescence emitted by the wavelength conversion device do not overlap, and different light paths are used when combining the first light reflected by the wavelength conversion device and the fluorescence emitted by the wavelength conversion device. Combining light in the light path can effectively reduce the light loss of the first light.

尽管本申请的实施方案已公开如上，但并不仅仅限于说明书和实施方案中所列运用，它完全可以被适用于各种适合本申请的领域，对于熟悉本领域的人员而言，可容易地实现另外的修改，因此在不背离权利要求及等同范围所限定的一般概念下，本申请并不限于特定的细节和这里所示出与描述的图例。Although the embodiments of this application have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for this application. For those familiar with the field, it can be easily Other modifications are implemented, so without departing from the general concept defined by the claims and equivalent scope, the present application is not limited to the specific details and the illustrations shown and described here.

Claims

一种波长转换装置，其特征在于，包括第一区段和第二区段，所述第一区段上设置有至少一个倾斜反射斜面，用于接收入射所述第一区段的入射光并通过所述倾斜反射斜面令反射的出射光以不同于所述入射光的光路出射；所述第二区段设置有波长转换材料，用于接收入射所述第二区段的入射光，并出射波长不同所述入射光的出射光。A wavelength conversion device is characterized in that it comprises a first section and a second section. The first section is provided with at least one oblique reflection inclined surface for receiving incident light incident on the first section and The reflected outgoing light is emitted through the oblique reflecting inclined surface through a different optical path from the incident light; the second section is provided with a wavelength conversion material for receiving the incident light incident on the second section and emitting it Outgoing light of the incident light having different wavelengths.
根据权利要求1所述的波长转换装置，其特征在于，所述第一区段上设置有凸起结构，所述凸起结构的倾斜面构成所述倾斜反射斜面。The wavelength conversion device according to claim 1, wherein a convex structure is provided on the first section, and the inclined surface of the convex structure constitutes the inclined reflection inclined surface.
根据权利要求1所述的波长转换装置，其特征在于，所述第一区段上设置有凹槽，所述凹槽的侧面相对底面倾斜以构成所述倾斜反射斜面。The wavelength conversion device according to claim 1, wherein a groove is provided on the first section, and the side surface of the groove is inclined with respect to the bottom surface to form the inclined reflection inclined surface.
根据权利要求3所述的波长转换装置，其特征在于，所述凹槽为三角形凹槽或梯形凹槽。The wavelength conversion device according to claim 3, wherein the groove is a triangular groove or a trapezoidal groove.
一种光源***，其特征在于，包括第一光源组件、第一导光组件、第一合光组件以及权利要求1-4任一项所述的波长转换装置，其中，A light source system, characterized by comprising a first light source component, a first light guide component, a first light combining component, and the wavelength conversion device according to any one of claims 1 to 4, wherein:

所述第一光源组件用于发射第一光；The first light source assembly is used to emit first light;

所述第一导光组件设置于第一光的传输路径上，用于将所述第一光引导至所述波长转换装置；The first light guide component is arranged on the transmission path of the first light, and is used to guide the first light to the wavelength conversion device;

所述波长转换装置包括基于所述第一光不发生波长转换的第一区段，以及基于所述第一光而出射第二光的第二区段；所述第一区段上设置有至少一个倾斜反射斜面，通过所述倾斜反射斜面令反射的第一光以不同于入射至所述第一区段的第一光的光路入射至所述第一合光组件；所述第二区段用于接收所述第一光并向所述第一合光组件出射所述第二光；其中，所述第一光和所述第二光的波长范围不同；The wavelength conversion device includes a first section that does not perform wavelength conversion based on the first light, and a second section that emits second light based on the first light; the first section is provided with at least An oblique reflection oblique surface through which the reflected first light enters the first light combining component through an optical path different from that of the first light incident to the first section; the second section For receiving the first light and emitting the second light to the first light combining component; wherein the wavelength ranges of the first light and the second light are different;

所述第一合光组件接收所述经过所述倾斜反射斜面反射的第一光和所述第二光，并引导至相同的出射光通道。The first light combining component receives the first light and the second light reflected by the inclined reflection slope, and guides the first light and the second light to the same exit light channel.
根据权利要求5所述的一种光源***，其特征在于，所述光源***还包括第二导光组件；The light source system according to claim 5, wherein the light source system further comprises a second light guide component;

所述第二导光组件用于接收经过所述第一区段反射的第一光，并将所述第一光反射至所述第一合光组件。The second light guide component is used for receiving the first light reflected by the first section and reflecting the first light to the first light combining component.
根据权利要求5所述的一种光源***，其特征在于，所述光源***还包括设置于所述第一光在所述波长转换装置之后的光路上的中继透镜，所述中继透镜用于在所述第一光入射所述第一合光组件之前对所述第一光进行调制。The light source system according to claim 5, wherein the light source system further comprises a relay lens arranged on the optical path of the first light behind the wavelength conversion device, and the relay lens is used for The first light is modulated before the first light enters the first light combining component.
根据权利要求5所述的一种光源***，其特征在于，所述光源***还包括设置于所述第一光源组件和所述第一导光组件之间的整形收集透镜组，所述整形收集透镜组用于压缩所述第一光源组件出射的第一光在所述第一导光组件上形成的光斑尺寸。The light source system according to claim 5, wherein the light source system further comprises a shaping and collecting lens group arranged between the first light source assembly and the first light guide assembly, and the shaping and collecting lens group The lens group is used to compress the spot size of the first light emitted by the first light source assembly on the first light guide assembly.
根据权利要求5所述的一种光源***，其特征在于，所述光源***还包括补充光源组件和第三导光组件；The light source system according to claim 5, wherein the light source system further comprises a supplementary light source component and a third light guide component;

所述补充光源组件用于发射补充光；The supplementary light source assembly is used to emit supplementary light;

所述第三导光组件设置在所述第一合光组件之后的光路上，且经过所述补充光的光路，用于对所述第一合光组件出射的合成光和所述补充光进行合光处理。The third light guide component is arranged on the optical path after the first light combining component, and passes through the optical path of the supplementary light, and is used to perform processing on the synthesized light emitted by the first light combining component and the supplementary light. Synthetic processing.
一种投影设备，其特征在于，包括光源子***和光机子***，其中，所述光源子***向所述光机子***出射投影光，所述光机子***接收所述投影光并基于所述投影光进行调制形成与待显示画面对应的图像光，以使所述图像光能够在投影平面上显示；其中，所述光源子***为权利要求5-9任意一项所述的光源***。A projection device, characterized by comprising a light source subsystem and an opto-mechanical subsystem, wherein the light source subsystem emits projection light to the opto-mechanical subsystem, and the opto-mechanical subsystem receives the projection light and based on the projection light Perform modulation to form image light corresponding to the picture to be displayed, so that the image light can be displayed on the projection plane; wherein, the light source subsystem is the light source system according to any one of claims 5-9.