阅读说明：本技术 波长转换装置及光源系统 (Wavelength conversion device and light source system ) 是由 李乾 陈雨叁 王艳刚 许颜正 于 2018-09-10 设计创作，主要内容包括：一种波长转换装置及光源系统,所述波长转换装置包含波长转换部和非波长转换部,波长转换部包含多个波长转换模块,每个波长转换模块均包含沿激发光入射方向依次设置的透明导热基板、波长转换层以及反射层。本发明通过改进波长转换模块的结构,使反射层外置,在增加反射层厚度的同时还能优化波长转换装置的散热；每个波长转换模块选用不同的材料独立封装,以充分提升不同颜色波长转换模块的光效,从而提升波长转换装置的出光效率。(A wavelength conversion device comprises a wavelength conversion part and a non-wavelength conversion part, wherein the wavelength conversion part comprises a plurality of wavelength conversion modules, and each wavelength conversion module comprises a transparent heat conduction substrate, a wavelength conversion layer and a reflection layer which are sequentially arranged along the incident direction of exciting light. According to the invention, the structure of the wavelength conversion module is improved, so that the reflecting layer is arranged outside, and the heat dissipation of the wavelength conversion device can be optimized while the thickness of the reflecting layer is increased; each wavelength conversion module is independently packaged by different materials, so that the light efficiency of the wavelength conversion modules with different colors is fully improved, and the light emitting efficiency of the wavelength conversion device is improved.)

1. A wavelength conversion device is used for emitting excited light under the irradiation of exciting light, and is characterized by comprising a wavelength conversion part and a non-wavelength conversion part, wherein the wavelength conversion part comprises a plurality of wavelength conversion modules, and each wavelength conversion module comprises a transparent heat conduction substrate, a wavelength conversion layer and a reflection layer which are sequentially arranged along the incidence direction of the exciting light.

2. The wavelength conversion device according to claim 1, wherein the wavelength conversion portion includes a first wavelength conversion module and a second wavelength conversion module, the first wavelength conversion module includes a first transparent heat conductive substrate, a first wavelength conversion layer, and a first reflection layer that are sequentially arranged in an incident direction of the excitation light, and the second wavelength conversion module includes a second transparent heat conductive substrate, a second wavelength conversion layer, and a second reflection layer that are sequentially arranged in the incident direction of the excitation light.

3. The wavelength conversion device according to claim 2, wherein the first wavelength conversion layer contains a first wavelength conversion material and an organic binder, the first reflective layer contains scattering particles and an organic binder, the second wavelength conversion layer contains a second wavelength conversion material and an inorganic binder, and the second reflective layer contains scattering particles and an inorganic binder.

4. The wavelength conversion device according to claim 2, wherein the excitation light incident surfaces of the first transparent thermally conductive substrate and the second transparent thermally conductive substrate are located on the same plane.

5. The wavelength conversion device according to claim 2, wherein the wavelength conversion portion further comprises a third wavelength conversion module comprising a third transparent heat conductive substrate, a third wavelength conversion layer, and a third reflection layer disposed in this order along the incident direction of the excitation light.

6. The wavelength conversion device according to claim 5, wherein the excitation light incident surfaces of the first, second, and third transparent heat conductive substrates are located on the same plane.

7. The wavelength conversion device according to claim 5, wherein the third wavelength conversion layer is a fluorescent ceramic layer, or wherein the third wavelength conversion layer contains a third wavelength conversion material and an inorganic binder.

8. The wavelength conversion device of claim 2, wherein the first wavelength conversion module further comprises a fluorescent ceramic layer disposed between the first transparent thermally conductive substrate and the first wavelength conversion layer.

9. The wavelength conversion device according to claim 2, wherein the non-wavelength converting region comprises a fourth transparent thermally conductive substrate and a fourth reflective layer.

10. The wavelength conversion device according to claim 9, wherein the fourth reflective layer is disposed on an excitation light incident surface of the fourth transparent thermally conductive substrate.

11. The wavelength conversion device according to claim 1, wherein a reflective layer is further provided between the wavelength conversion layers of the adjacent wavelength conversion modules.

12. A light source system comprising a wavelength conversion device according to any one of claims 1 to 11.

Technical Field

The invention relates to a wavelength conversion device and a light source system, and belongs to the technical field of illumination and display manufacturing.

Background

The fluorescent powder is excited by utilizing light sources such as laser or LED to obtain preset monochromatic light or polychromatic light, and the fluorescent powder is a technical scheme widely applied to the fields of lighting sources, projection display and the like. The technical scheme is that laser or LED emergent light is often incident on a fluorescent powder color wheel rotating at high speed so as to realize good heat dissipation.

Disclosure of Invention

The present invention provides a wavelength conversion device and a light source system with good reflectivity and heat dissipation performance, aiming at the defects of the prior art.

The technical problem to be solved by the invention is realized by the following technical scheme:

a wavelength conversion device is used for emitting excited light under the irradiation of exciting light and comprises a wavelength conversion part and a non-wavelength conversion part, wherein the wavelength conversion part comprises a plurality of wavelength conversion modules, and each wavelength conversion module comprises a transparent heat conduction substrate, a wavelength conversion layer and a reflection layer which are sequentially arranged along the incidence direction of the exciting light.

Preferably, the wavelength conversion part includes a first wavelength conversion module and a second wavelength conversion module, the first wavelength conversion module includes a first transparent heat conduction substrate, a first wavelength conversion layer and a first reflection layer that are sequentially arranged along the incident direction of the excitation light, and the second wavelength conversion module includes a second transparent heat conduction substrate, a second wavelength conversion layer and a second reflection layer that are sequentially arranged along the incident direction of the excitation light.

Preferably, the first wavelength conversion layer includes a first wavelength conversion material and an organic binder, the first reflective layer includes scattering particles and an organic binder, the second wavelength conversion layer includes a second wavelength conversion material and an inorganic binder, and the second reflective layer includes scattering particles and an inorganic binder.

Preferably, the excitation light incident surfaces of the first transparent heat conductive substrate and the second transparent heat conductive substrate are located on the same plane.

Preferably, the wavelength conversion part further includes a third wavelength conversion module, and the third wavelength conversion module includes a third transparent heat conduction substrate, a third wavelength conversion layer, and a third reflection layer, which are sequentially disposed along the excitation light incidence direction.

Preferably, the excitation light incident surfaces of the first, second, and third transparent heat conductive substrates are located on the same plane.

Preferably, the third wavelength conversion layer is a fluorescent ceramic layer, or the third wavelength conversion layer contains a third wavelength conversion material and an inorganic binder.

Preferably, the first wavelength conversion module further comprises a fluorescent ceramic layer disposed between the first transparent heat conductive substrate and the first wavelength conversion layer.

Preferably, the non-wavelength converting region includes a fourth transparent thermally conductive substrate and a fourth reflective layer, the fourth reflective layer being disposed on the excitation light incident surface of the fourth transparent thermally conductive substrate.

Preferably, a reflective layer is further disposed between the wavelength conversion layers of the adjacent wavelength conversion modules.

The invention also provides a light source system comprising the wavelength conversion device.

In summary, the structure of the wavelength conversion module is improved, so that the reflective layer is externally arranged, and the heat dissipation of the wavelength conversion device can be optimized while the thickness of the reflective layer is increased; each wavelength conversion module is independently packaged by different materials so as to fully improve the light efficiency of the wavelength conversion modules with different colors, thereby improving the light extraction efficiency of the wavelength conversion device; the excitation light incidence surfaces of the transparent heat conduction substrates of the different-color wavelength conversion modules are arranged on the same plane, so that the collection efficiency of the collection lenses in the light path is consistent.

The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a schematic structural diagram of a wavelength conversion device according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a first wavelength conversion module according to one embodiment of the invention;

FIG. 3 is a cross-sectional view of a second wavelength conversion module according to one embodiment of the present invention;

FIG. 4 is a cross-sectional view of a third wavelength conversion module according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of a non-wavelength converting region according to an embodiment of the present invention;

FIG. 6 is a graph showing the relationship between the particle size and content of scattering particles and the reflectivity;

fig. 7 is a cross-sectional view of a third wavelength conversion module according to an embodiment of the present invention;

FIG. 8 is a flowchart illustrating a method for fabricating a wavelength conversion device according to an embodiment of the present invention;

fig. 9 is a cross-sectional view of a third wavelength conversion module according to an embodiment of the present invention.

[ description of reference ]

100 first wavelength conversion module

200 second wavelength conversion module

300 third wavelength conversion module

400 non-wavelength converting part

110 first wavelength conversion layer

120 first reflective layer

130 first transparent heat-conducting substrate

210 second wavelength converting layer

220 second reflective layer

230 second transparent heat-conducting substrate

310 third wavelength conversion layer

320 third reflective layer

330 third transparent heat-conducting substrate

420 fourth reflective layer

430 fourth transparent heat-conducting substrate

310' yellow fluorescent ceramic

320' third surrounding reflective layer

Detailed Description