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Light source system, wavelength conversion device and related projection system

A technology of wavelength conversion device and light source system, which is applied to light sources, projection devices, lighting devices, etc., can solve the problems of reduced light conversion efficiency of wavelength conversion materials, low light conversion efficiency of wavelength conversion materials, etc. The effect of power density reduction

Active Publication Date: 2016-08-17
APPOTRONICS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the optical power density of the excitation light is higher, the photoconversion efficiency of the wavelength conversion material is lower; decline

Method used

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  • Light source system, wavelength conversion device and related projection system
  • Light source system, wavelength conversion device and related projection system
  • Light source system, wavelength conversion device and related projection system

Examples

Experimental program
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Embodiment 1

[0025] see Figure 1A , Figure 1A It is a structural schematic diagram of an embodiment of the light source system of the present invention. The light source system 100 includes an excitation light source 101 and a wavelength conversion device 11 .

[0026] The wavelength conversion device 11 includes a microstructure array 103 . The microstructure array includes a plurality of microstructures 103a, wherein each microstructure 103a includes a wavelength conversion material for absorbing light in one wavelength range and emitting light in another wavelength range. Commonly used wavelength converting materials include phosphors. The wavelength conversion material may also be materials with wavelength conversion capabilities such as quantum dots and fluorescent dyes, and is not limited to phosphors. Such as Figure 1B as shown, Figure 1B yes Figure 1A Schematic diagram of the structure of the wavelength conversion device in the light source system shown. In this embodimen...

Embodiment 2

[0038] see image 3 , image 3 It is a structural schematic diagram of another embodiment of the light source system of the present invention. In this embodiment, the light source system 300 includes an excitation light source 301 and a wavelength conversion device 33 . The wavelength conversion device 33 includes a microstructure array 303 and a substrate 305 . Different from Embodiment 1, the base 305 in this embodiment is made of light-transmitting material, and the microstructure array 303 is disposed in the base 305 .

[0039] The substrate 305 includes a first surface 305 a and a second surface 305 b opposite to the first surface 305 a, wherein the first surface 305 a is used for receiving the excitation light L1 from the excitation light source 301 . The microstructure array 303 has an undulating side facing the first surface 305a, and the extending direction of the microstructure array 303 is parallel to the first surface 305a.

[0040] Compared with Embodiment 1, ...

Embodiment 3

[0044] see Figure 4 , Figure 4 It is a structural schematic diagram of another embodiment of the light source system of the present invention. The light source system 400 includes an excitation light source (not shown) and a wavelength conversion device 44 . The wavelength conversion device 44 includes a wavelength conversion layer 403 . Different from the above embodiments, the microstructure array in the wavelength conversion device 44 in this embodiment is not arranged on the substrate or in the substrate, but is directly formed on the side of the wavelength conversion layer 403 facing the excitation light source as in the embodiment. 1 and 2 describe microstructure arrays. Compared with the above embodiments, in this embodiment, since no substrate is needed to carry the wavelength conversion layer, the cost can be reduced.

[0045] In this embodiment, the wavelength conversion device 44 is reflective, and each microstructure is columnar. This can be achieved by coat...

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Abstract

The embodiment of the invention discloses a light source system, a wavelength conversion device and a related projection system. The light source system comprises an excitation light source and a wavelength conversion device, wherein the excitation light source is used for generating an excitation light; the excitation light enters the wavelength conversion device; the wavelength conversion device comprises a microstructure array; the microstructure array comprises a plurality of microstructure bodies which are in a projection form; each microstructure body comprises a wavelength conversion material; the distance between any two adjacent microstructure bodies is greater than zero; scattering surfaces coat the microstructure bodies; the undulating surface of the microstructure array faces the incident excitation light; and a light spot, of the excitation light, formed on the wavelength conversion device covers at least one part of one microstructure body and also covers at least one part of the scattering surface between the microstructure body and one adjacent microstructure body, so that the excitation light is scattered through the scattering surface, mixed with excited light and emitted. The light source system which is efficient and emits hybrid light of the excitation light and the excited light can be provided.

Description

[0001] The present invention is based on the division of the patent application with the application number 201210395090.X, the title of the invention is light source system, wavelength conversion device and related projection system, and the application date is October 17, 2012. technical field [0002] The invention relates to the technical field of illumination and display, in particular to a light source system, a wavelength conversion device and a related projection system. Background technique [0003] In the light-emitting device of the lighting system or the projection system in the prior art, the excitation light is often used to excite the wavelength conversion material to generate the stimulated light. However, since the wavelength conversion efficiency of each wavelength conversion material particle cannot be 100% in the process of being excited, the energy lost therein is converted into heat, which results in the accumulation of heat of the wavelength conversion ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20F21V9/10F21Y115/10F21Y115/30F21V9/40
CPCG03B21/204
Inventor 胡飞李屹
Owner APPOTRONICS CORP LTD
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