WO2018214333A1

WO2018214333A1 - Wavelength conversion device and light source system

Info

Publication number: WO2018214333A1
Application number: PCT/CN2017/100568
Authority: WO
Inventors: 戴达炎; 郭祖强; 李屹
Original assignee: 深圳市光峰光电技术有限公司
Priority date: 2017-05-26
Filing date: 2017-09-05
Publication date: 2018-11-29
Also published as: CN206863465U

Abstract

A wavelength conversion device (120, 220) and a light source system (100, 200). The wavelength conversion device (120, 220) comprises a light filter layer (125, 225) and a wavelength conversion layer (123, 223) which are stacked; a preset spacing distance is provided between the light filter layer (125, 225) and the wavelength conversion layer (123, 223). For the wavelength conversion device (120, 220), the light filer layer (125, 225), the wavelength conversion layer (123, 223), and a substrate (121, 221) are stacked, such that the wavelength conversion device (120, 220) has a small size; this facilitates miniaturization design of the wavelength conversion device (120, 220) and the light source system (100, 200), and thus improves portability and market competitiveness of the light source system (100, 200) and related projection apparatuses. In addition, the preset spacing distance is provided between the wavelength conversion layer (123, 223) and the light filter layer (125, 225), and therefore, light emitting efficiency and light emitting brightness of excited light generated by the wavelength conversion layer (123, 223) are improved.

Description

Wavelength conversion device and light source system

Technical field

The utility model relates to the field of projection technology, in particular to a wavelength conversion device and a light source system.

Background technique

The use of laser-excited phosphors to generate lasers is currently a widely used light source solution in the fields of illumination and projection.

technical problem

Common illumination devices include an excitation source, a wavelength conversion device, and a drive device. The wavelength conversion device is rotated at a high speed by the driving device, and the wavelength conversion device is provided with a wavelength conversion material such as phosphor, and the excitation light generated by the excitation light source is incident on the surface of the wavelength conversion device, and the wavelength conversion material is excited by the excitation light to generate the laser light. For the field of projection display, etc., the fluorescence spectrum of the phosphor is too wide, and direct use of the phosphor by the laser as the projection light source makes the color saturation of the displayed image not high. Therefore, in the prior art, a filter is disposed on the wavelength conversion device to trap a portion of the band fluorescence.

Generally, the filter is disposed on the outer ring of the wavelength conversion device, which results in an increase in the size of the wavelength conversion device, and the volume of the wavelength conversion device and the light source system is increased, which is disadvantageous for the miniaturization design of the light source system and the projection system.

Technical solution

In view of this, the present invention provides a small-volume wavelength conversion device and a light source system.

A wavelength conversion device includes a filter layer and a wavelength conversion layer disposed in a stack, and a predetermined separation distance is disposed between the filter layer and the wavelength conversion layer.

A light source system comprising an excitation light source, a spectroscopic light combining device for generating excitation light, and a wavelength conversion device for guiding the excitation light to the wavelength conversion device The wavelength conversion device converts part of the excitation light into a laser light, and the laser light and the unconverted partial excitation light are emitted from the wavelength conversion device and then projected to the light combining and combining device, and the light combining and combining device It is also used to combine the laser-exposed and unconverted partial excitation light into the same optical path.

Beneficial effect

In the wavelength conversion device and the light source system provided by the present invention, the filter layer and the wavelength conversion layer are stacked at a predetermined interval, so that the size of the wavelength conversion device is small, which is advantageous for the wavelength conversion. The miniaturization design of the device and the light source system improves the portability and market competitiveness of the light source system and related projection devices. In addition, a predetermined distance is spaced between the wavelength conversion layer and the filter layer, and a laser light generated by the wavelength conversion layer is refracted on a side of the filter layer adjacent to the wavelength conversion layer, and refraction occurs. The laser light can be directly emitted through the filter layer, so that the predetermined interval distance is set between the wavelength conversion layer and the filter layer, so that the light-emitting efficiency of the laser light can be improved. Light output brightness.

DRAWINGS

FIG. 1 is a schematic diagram of a light source system according to a first embodiment of the present invention.

2 is a top plan view of the wavelength conversion device shown in FIG. 1.

Fig. 3 is a plan view showing the surface of a wavelength conversion device in another modified embodiment.

Fig. 4 is a view showing the transmittance of the first filter in the first embodiment.

Fig. 5 is a view showing the transmittance of the second filter in the first embodiment.

FIG. 6 is a schematic diagram of a light source system according to a second embodiment of the present invention.

Fig. 7 is a top plan view showing the surface of the light combining and combining device shown in Fig. 7.

FIG. 8 is a schematic diagram of a wavelength conversion device according to a third embodiment of the present invention.

Main component symbol description

光源系统 Light source system	100 、 200 100, 200
激发光源 Excitation source	101 101
分光合光装置 Optical splitting device	102 、 202 102, 202
分光区 Spectroscopic area	2021 2021
透射区 Transmissive zone	2022 2022
波长转换装置 Wavelength conversion device	120 、 220 、 320 120, 220, 320
滤光层 Filter layer	125 、 225 、 325 125, 225, 325
基板 Substrate	121 、 221 121, 221
非转换区 Non-conversion zone	121b 、 221b 121b, 221b
侧壁 Side wall	121c 121c
反射面 Reflective surface	121d 121d
波长转换层 Wavelength conversion layer	123 、 223 、 323 123, 223, 323
第一区段 First section	1231 1231
第二区段 Second section	1232 1232
介质 medium	124 、 224 、 324 124, 224, 324
第一滤光片 First filter	1251 1251
第二滤光片 Second filter	1252 1252
第三滤光片 Third filter	2253 2253
散热组件 Heat sink	126 126
驱动装置 Drive unit	128 、 228 、 328 128, 228, 328
激发光收集装置 Excitation light collecting device	140 140
匀光装置 Homogenizer	108 、 208 108, 208
散射材料层 Scattering material layer	217 217

The present invention will be further described in conjunction with the above drawings in the following detailed description.

BEST MODE FOR CARRYING OUT THE INVENTION

Please refer to FIG. 1. FIG. 1 is a schematic diagram of a light source system 100 according to a first embodiment of the present invention. The light source system 100 includes an excitation light source 101, a beam splitting device 102, a wavelength conversion device 120, an excitation light collecting device 140, and a light homogenizing device 108.

The excitation light source 101 is used to generate excitation light. The excitation light source 101 may be disposed at one side of the wavelength conversion device 120. Further, the excitation light source 101 may be a blue light source that emits blue light excitation light. It can be understood that the excitation light source is not limited to a blue light source, and the excitation light source may also be a violet light source, a red light source, a green light source or a white light source. In this embodiment, the excitation light source 101 includes a blue laser for emitting blue laser light as the excitation light. It can be understood that the excitation light source 101 may include one, two or more blue lasers, specifically The number of lasers can be selected according to actual needs.

The beam splitting device 102 and the excitation light source 101 may be disposed on the same side of the wavelength conversion device 120, and the beam splitting device 102 is located on the optical path of the excitation light, and guides the excitation light to The wavelength conversion device 120. The beam splitting device 102 also directs the laser light generated by the wavelength conversion device 120 to the light homogenizing device 108.

As shown in FIG. 1, in the embodiment, the wavelength conversion device 120 is a reflective color wheel for converting the excitation light into the laser light of at least one color light. The wavelength conversion device 120 is located on the optical path where the excitation light emitted by the excitation light source 101 is located. The wavelength conversion device 120 is composed of a filter layer 125, a wavelength conversion layer 123, a substrate 121, and a heat dissipation component 126 which are stacked in this order from top to bottom. A driving device 128 is disposed at the center of the bottom of the substrate 121, and the driving device 128 drives the high-speed rotation of the entire wavelength conversion device 120. A predetermined distance is disposed between the filter layer 125 and the wavelength conversion layer 123. Further, a medium 124 is filled between the filter layer 125 and the wavelength conversion layer 123.

The wavelength conversion device 120 is a reflective wavelength conversion device, such as a reflective color wheel, which has the advantage of sufficient heat dissipation space. The heat dissipating component 126 can further improve the heat dissipation effect of the wavelength conversion device 120, and the heat dissipating component 126 is disposed on the other surface of the wavelength conversion device 120 (ie, the side opposite to the light emitting surface of the wavelength conversion device 120). The heat dissipating component 126 may be a heat dissipating blade, and the heat dissipating blade may be in the shape of a circular ring, a columnar protrusion, a sheet-like protrusion or the like distributed along the circumference.

The driving device 128 is disposed at a center of the bottom of the wavelength conversion device 120 and drives the wavelength conversion device 120 to periodically move. The wavelength conversion device 120 rotates at a high speed with the driving device 128 as an axis.

The substrate 121 is used to carry other components in the wavelength conversion device 120, and the substrate 121 has high reflectivity in the ultraviolet/visible region, and a specular reflection material such as high-reflectivity metal such as high anti-aluminum or silver may be used. It is also possible to use a diffuse reflection material such as silica gel or ceramics containing scattering particles.

Please refer to FIG. 2 further in conjunction with FIG. 1. FIG. 2 is a top plan view of the wavelength conversion device shown in FIG. 1. The surface of the substrate 121 includes a conversion region and a non-conversion region 121b, and the conversion region and the non-conversion region 121b are both fan-shaped regions having the same radius as the surface. The conversion area is for carrying the wavelength conversion layer 123; the non-transformation area 121b is for setting an optical path conversion layer, and the optical path conversion layer can reflect or transmit light. Since the wavelength conversion device 120 rotates with the driving device 128 as an axis, the conversion region and the non-conversion region 121b are alternately located on the optical path where the excitation light is located, and further, due to the periodicity of the wavelength conversion device 120. The high-speed rotation, so that the conversion region and the non-conversion region 121b are periodically alternated with the wavelength conversion device 120 on the optical path where the excitation light is located.

In another preferred embodiment, the wavelength conversion device 120 is a transmissive color wheel or a partially transmissive color wheel. That is, one or all of the conversion region and the non-conversion region 121b are transmission regions, and the excitation light and the optical path of the laser light after the wavelength conversion device 120 are the same as those in the first embodiment. different.

In this embodiment, the optical path conversion layer includes a reflective surface 121d that is fan-shaped and distributed on an edge of the substrate 121. The optical path conversion layer includes a reflective surface 121d connected between the sidewall 121c of the substrate 121 and the non-conversion region 121b, and the reflective surface 121d and the sidewall 121c and the The non-conversion zone 121b is at a predetermined angle. The reflective surface 121d is periodically located on the optical path where the excitation light is located, and the excitation light is reflected by the reflective surface 121d and enters the excitation light collecting device 140 (FIG. 1). It can be understood that the reflecting surface 121d can be attached with a scattering film, which together with the reflecting surface scatters and reflects the excitation light to the excitation light collecting device 140.

The wavelength conversion layer 123 covers the conversion region and includes a first segment 1231 and a second segment 1232. The wavelength conversion layer 123 is uniformly provided with a wavelength conversion material. In the embodiment, the wavelength conversion material is a phosphor, and the first segment 1231 and the second segment 1232 are respectively coated with different colors. The phosphor, the phosphor on each segment receives the excitation light and emits a laser of a corresponding color. Wherein the laser received by the laser comprises at least two different colors of light, each segment corresponding to emitting a color of the laser.

It can be understood that the wavelength conversion device 120 can be periodically rotated along its center such that each segment region is periodically located on the optical path of the excitation light emitted by the excitation light source 101. When the excitation light is irradiated to the first segment 1231 or the second segment 1232, the phosphor on the first segment 1231 or the second segment 1232 is excited by the excitation light, And the laser of the corresponding color is emitted. In this embodiment, the first segment 1231 is provided with a red phosphor to emit a red laser, and the second segment 1232 is provided with a green phosphor to emit a green laser. In another modified embodiment, the first section 1231 may also be provided with a yellow phosphor to emit a yellow laser. Alternatively, in yet another modified embodiment, the first segment 1231 and the second segment 1232 are each provided with a yellow phosphor.

The wavelength conversion device 120 is further covered with the filter layer 125, and the filter layer 125 is configured to filter and specify the light. Light in a wavelength range such that a laser beam of a specified wavelength range is transmitted to the spectroscopic unit 102 via the filter layer 125. Specifically, the filter layer 125 can set a light having a narrow wavelength range to pass through to obtain more pure monochromatic light.

As shown in FIG. 2, the filter layer 125 includes a first filter 1251 and a second filter 1252, the first filter 1251 covers the first segment 1231, and the second filter The sheet 1252 covers the second section 1232, that is, the laser light of both colors is transmitted through the filter layer 125.

Please refer to FIG. 3. FIG. 3 is a top plan view of the wavelength conversion device in another modified embodiment. In the other modified embodiment, the first segment 1231 is provided with the yellow phosphor to generate the yellow laser, and the second segment 1232 is provided with a green phosphor to generate a green laser. Correspondingly, the filter layer 125 includes only the first filter 1251, and the first filter 1251 covers the first segment 1231, that is, the yellow laser is filtered by the filter layer 125 and then emits red. By the laser, the green is directly emitted by the laser.

Please refer to FIG. 4 to FIG. 5. FIG. 4 is a schematic diagram showing the transmittance of the first filter in the first embodiment, and FIG. 5 is a schematic diagram showing the transmittance of the second filter in the first embodiment. Since the first light and the second light are different in color, correspondingly, the transmittances of the first filter 1251 (FIG. 2) and the second filter 1252 (FIG. 2) are different. .

As shown in FIG. 4, the first filter 1251 can transmit blue light and red light, and reflect green light and yellow light, that is, the blue excitation light can be transmitted through the first color filter 1251 to the The wavelength conversion layer 123; since the yellow light may be mixed by a ratio of red light and green light, the red laser light or the yellow laser light may be transmitted through the first color filter 1251 to the red color. Laser light is applied to the beam splitting device 102. The red-receiving laser light emitted from the wavelength conversion device can be generated not only by the excitation of the red phosphor, but also by the excitation light to excite the yellow phosphor to obtain a red laser.

As shown in FIG. 5, in the embodiment, the second filter 1252 is a short-wavelength filter, and the second filter 1252 can transmit blue light and green light, and reflects red light, that is, the first The second filter 1252 is capable of transmitting the excitation light and the second light.

As shown in FIG. 1 , the medium 124 is disposed between the wavelength conversion layer 123 and the filter layer 125 . The refractive index of the wavelength conversion layer 123 and the filter layer 125 are similar. It can be understood that the refractive index of the medium 124 can be smaller than the refractive index of the wavelength conversion layer 123 and the filter layer 125. . Moreover, when the medium 124 is selected, the difference between the refractive index of the medium 124 and the refractive index of the filter layer 125 may be made as large as possible, or the difference between the refractive index of the medium 124 and the refractive index of the wavelength conversion layer 123 may be as large as possible. Big.

Specifically, if the wavelength conversion layer 123 and the filter layer 125 are attached to each other, since the refractive index between the wavelength conversion layer 123 and the filter layer 125 is close, the laser light enters the The filter layer 125 will propagate laterally, resulting in loss of light. In this embodiment, a preset separation distance is set between the wavelength conversion layer 123 and the filter layer 125, and the received laser light is between the side of the filter layer 125 adjacent to the wavelength conversion layer 123. Refraction occurs, and the refracted laser energy can be directly emitted through the filter layer 125, so that the presence of the predetermined separation distance can improve the light extraction efficiency of the laser, and for the same optical path, the preset The light-emitting efficiency of the wavelength conversion device 120 of the separation distance is 35% higher than that of the wavelength conversion device 120 without the predetermined separation distance. Further, the larger the preset separation distance, the larger the divergence angle of the laser light that is emitted. In order to ensure that the laser is emitted at a small divergence angle, the predetermined separation distance is controlled within 0.5 mm.

As shown in FIG. 1 , a predetermined separation distance is disposed between the wavelength conversion layer 123 and the filter layer 125 , and a medium 124 is disposed in the preset separation distance, and the medium 124 in FIG. 1 is Air, the filter layer 125 covers the wavelength conversion layer 123 and needs to be fixed to the wavelength conversion device 120 by a holding portion.

As shown in FIG. 1, the laser light and the unconverted partial excitation light are emitted from the wavelength conversion device 120 and transmitted along different optical paths. The unconverted part of the excitation light is emitted from the wavelength conversion device 120 and then incident on the excitation light collecting device 140. The excitation light collecting device 140 collects, reflects, and scatters the unconverted partial excitation light, and then guides Part of the excitation light that is not converted is projected to the spectroscopic light combining device 102. The laser light emitted from the wavelength conversion device 120 is projected to the light combining and combining device 102.

The excitation light collecting device 140 may be provided with one or more of a concentrating element, a reflective element, and a astigmatism element as needed.

The beam splitting device 102 directs a portion of the excitation light that is not converted and the laser beam to exit along the same optical path. A portion of the excitation light that is not converted, the laser light is mixed in the light homogenizing device 108 and enters the optomechanical system. The light homogenizing device 108 may include one or more components such as a light homogenizing rod and a fly-eye lens. In this embodiment, the light homogenizing device 108 is a light homogenizing rod.

In this embodiment, the excitation light source 101 emits blue excitation light, and the excitation light is reflected by the optical splitting device 102 and then irradiated onto the wavelength conversion device 120. The wavelength conversion device 120 is in the driving device. The 128 drive rotates at a high speed.

In the first period, the excitation light is transmitted through the filter layer 125 to the wavelength conversion layer 123, and the excitation light excites the wavelength conversion layer 123 to generate the laser light, and the laser light passes through The filter layer 125 and the beam splitting device 102 are transmitted to the light homogenizing device 108.

In the second period, the excitation light is irradiated to the reflective surface 121d, and the reflective surface 121d reflects the excitation light into the excitation light collecting device 140. At this timing, the excitation light is reflected, scattered, and concentrated by the excitation light collecting device 140, and finally guided to the spectroscopic unit 102 and the light homogenizing device 108.

Part of the excitation light that is not converted, the laser light is guided by the splitting and combining device 102 along the same optical path to the light homogenizing device 108, and the light homogenizing device 108 pairs the unconverted partial excitation light and the received light The laser is homogenized and enters the optomechanical system.

In the wavelength conversion device 120 provided in this embodiment, since the filter layer 125 and the wavelength conversion layer 123 are stacked, the size of the wavelength conversion device 120 is small, which is advantageous for the wavelength conversion device 120. The miniaturization design of the light source system 100 improves the portability and market competitiveness of the light source system 100 and related projection equipment. In addition, a preset separation distance is disposed between the wavelength conversion layer 123 and the filter layer 125, so that the laser light is refracted on a side of the filter layer 125 adjacent to the wavelength conversion layer 123, and occurs. The refracted laser light can be directly emitted through the filter layer 125, and thus the presence of the predetermined separation distance can improve the light-emitting efficiency and the light-emitting brightness of the laser light.

Please refer to FIG. 6. FIG. 6 is a schematic diagram of a wavelength conversion device according to a second embodiment of the present invention. The difference between the present embodiment and the first embodiment is that the medium 124 is a colloid, and the colloid is disposed in a preset area between the filter layer 125 and the wavelength conversion layer 123. Specifically, the preset area is The edge of the wavelength conversion layer 123, the filter layer 125 and the wavelength conversion layer 123 are fixed by dispensing.

Please refer to FIG. 6 to FIG. 7. FIG. 6 is a schematic diagram of a light source system according to a second embodiment of the present invention, and FIG. 7 is a top plan view of the second optical splitting device as shown in FIG. The second embodiment is compared with the first embodiment, and the main difference is that the structure of the optical combining device 202 and the wavelength conversion device 220 is improved in the light source system 200, and the excitation light recovery is correspondingly improved. Light path.

As shown in FIG. 6, the wavelength conversion device 220 includes a filter layer 225, a substrate 221, an optical path conversion layer, and a wavelength conversion layer 223. In this embodiment, the optical path conversion layer includes a scattering material layer 217. One side of the substrate 221 includes a conversion region and a non-conversion region 221b, the wavelength conversion layer 223 covers the conversion region, and the non-transition region 221b is provided with the scattering material layer 217. The wavelength conversion layer 223 is the same as the wavelength conversion layer 123 in the first embodiment, and is used to generate a red laser and a green laser.

The filter layer 225 covers the wavelength conversion layer 223 and the scattering material layer 217, and includes a third filter 2253 capable of transmitting the excitation light, the third filter 2253 covering the scattering material Layer 217. When the scattering material layer 217 is periodically located on the optical path where the excitation light is located, the scattering material layer 217 scatters the excitation light and emits it to the optical splitting device 202.

As shown in FIG. 7, the spectroscopic light combining device 202 may be a zone coating filter. The third optical combining device includes a beam splitting region 2021 that reflects blue light and transmits red light and green light, and a transmissive region 2022 that transmits red, green, and blue light. The excitation light emitted by the scattering material layer 217 is transmitted to the light homogenizing device 208 via the transmissive region 2022, and the red laser light and the green laser light generated by the wavelength conversion layer are transmitted from the light splitting region 2021 to the The light homogenizing device 208, that is, the light combining and combining device 202, guides the excitation light and the laser light to be emitted to the light homogenizing device 208 along the same optical path.

The light source system 200 provided in the second embodiment improves the excitation light recovery optical path as compared with the light source system 100 provided in the first embodiment, reducing the number of components of the light source system 200, The volume of the light source system 200 is reduced, which facilitates the miniaturization design of the wavelength conversion device and the light source system 200, and improves the portability and market competitiveness of the related projection device.

Please refer to FIG. 8. FIG. 8 is a schematic diagram of a wavelength conversion device according to a third embodiment of the present invention. This embodiment is different from the first embodiment in that the medium 324 disposed between the wavelength conversion layer 323 and the filter layer 325 in the wavelength conversion device 320 in the present embodiment is a colloid. The colloid is disposed in a predetermined area between the filter layer 325 and the wavelength conversion layer 323. Specifically, the preset area is an edge of the wavelength conversion layer 323, and the filter layer 325 is The wavelength conversion layer 323 is fixed by dispensing. The wavelength conversion layer 323 and the filter layer 325 are integrally bonded by the colloid.

The third embodiment is compared with the first embodiment, the filter layer 325 in the third embodiment is fixed to the wavelength conversion layer 323 without other components, and the wavelength conversion device is reduced. The number of components of 320 reduces the volume of the wavelength conversion device 320, which facilitates the miniaturization of the wavelength conversion device 320 and reduces production costs.

The above is only the embodiment of the present invention, and thus does not limit the scope of the patent of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the utility model and the drawings, or directly or indirectly applied to other The related technical fields are all included in the scope of patent protection of the present invention.

Claims

A wavelength conversion device, comprising: a filter layer and a wavelength conversion layer disposed in a stacked manner, wherein a predetermined separation distance is disposed between the filter layer and the wavelength conversion layer.

2. A wavelength conversion device according to claim 1 wherein said predetermined spacing distance is less than 0.5 mm.

The wavelength conversion device according to claim 1, wherein the filter layer is for filtering light and obtaining light in a specified wavelength range, and the wavelength conversion device includes a holding portion, the filter The layer is fixed to the wavelength conversion device by the holding portion.

The wavelength conversion device according to claim 3, wherein the holding portion comprises a colloid, the filter layer and the wavelength conversion layer are bonded by the colloid, and the colloid is disposed on the filter An edge region between the light layer and the wavelength conversion layer.

The wavelength conversion device according to claim 1, wherein the wavelength conversion device comprises a substrate, a surface of the substrate comprises a conversion region and a non-conversion region, and the wavelength conversion layer covers the conversion region, The non-conversion area is provided with an optical path conversion layer for reflecting or transmitting the excitation light.

The wavelength conversion device according to claim 5, wherein the optical path conversion layer comprises a reflective surface, the reflective surface is connected between a sidewall of the substrate and the non-conversion region, and The reflecting surface is at a predetermined angle with the side wall and the non-converting zone.

The wavelength conversion device according to claim 5, wherein the optical path conversion layer comprises a scattering material layer covering the non-conversion region.

The wavelength conversion device of claim 1 , wherein the wavelength conversion layer comprises a first segment and a second segment, the filter layer covering the first segment and/or the The second section.

The wavelength conversion device according to claim 5, wherein the other surface of the substrate is provided with a heat dissipating component, the other surface facing away from a surface on which the conversion region and the non-conversion region are located.

A light source system, comprising: an excitation light source, a spectroscopic unit, and the wavelength conversion device according to any one of claims 1-9,

The excitation light source is for generating excitation light;

The light combining and combining device directs the excitation light to the wavelength conversion device;

The wavelength conversion device converts part of the excitation light into a laser light, and the laser light and the unconverted partial excitation light are emitted from the wavelength conversion device and then projected to the light combining and combining device;

The beam splitting device is further configured to combine the laser-receiving and the unconverted partial excitation light into the same optical path.

The light source system according to claim 10, wherein the light source system further comprises an excitation light collecting device, wherein the received laser light and the unconverted partial excitation light are emitted from the wavelength conversion device and are different in different directions. Optical path transmission;

Part of the unexcited excitation light is emitted from the wavelength conversion device and then incident on the excitation light collecting device, and the excitation light collecting device collects, reflects, and scatters the unexcited portion of the excitation light, and the guide is not converted. Part of the excitation light is projected onto the optical splitting device;

The laser light emitted from the wavelength conversion device is projected to the light combining and combining device.

12. The light source system of claim 10, wherein

The light combining unit reflects the excitation light and transmits the laser light; or the light combining unit includes a light splitting region and a transmissive region, wherein the spectroscopic region reflects the excitation light transmitted by a laser, and the transmissive region transmits The excitation light and the received laser light.

The light source system according to claim 10, wherein the light source system comprises a light homogenizing device, and the laser light and the unconverted partial excitation light emitted from the light splitting and combining device pass through the uniformity The light device is lighted and then emerges.