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Wavelength conversion device and light source system

A technology of wavelength conversion device and wavelength conversion layer, which is applied in projection devices, lighting devices, components of lighting devices, etc., can solve the problems of increasing the thermal resistance of the reflective layer and reducing the heat dissipation performance, so as to improve the light efficiency and collection efficiency Consistent, the effect of improving light extraction efficiency

Inactive Publication Date: 2020-03-17
APPOTRONICS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the optical power continues to increase, the requirements for the reflectivity of the reflective layer gradually increase. Increasing the thickness of the reflective layer is one of the effective ways to increase its reflectivity, and increasing the thickness of the reflective layer will inevitably increase the reflectivity of the reflective layer. thermal resistance, reducing the thermal performance of the

Method used

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  • Wavelength conversion device and light source system
  • Wavelength conversion device and light source system
  • Wavelength conversion device and light source system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The present invention provides a wavelength conversion device for emitting received light under the irradiation of excitation light, which includes a wavelength conversion part and a non-wavelength conversion part.

[0048] The wavelength conversion part includes a plurality of wavelength conversion modules, and each wavelength conversion module is fan-shaped. Each wavelength conversion module includes a transparent heat-conducting substrate, a wavelength conversion layer, and a reflection layer arranged in sequence along the incident direction of the excitation light. The color of the wavelength conversion layer can be Red, yellow, green, orange or cyan, etc. Specifically, when 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-conducting substrate, a first wavelength conversion layer, and a first The reflective layer, the second...

Embodiment 2

[0087] Compared with the first embodiment, this embodiment differs in that the wavelength conversion layer of the third wavelength conversion module is made of yellow fluorescent ceramics. Due to the current YAG: Ce 3+ The preparation process of yellow fluorescent ceramics is relatively mature, and its luminous efficiency has surpassed the combination of inorganic adhesives and yellow fluorescent powder, and has great advantages in heat resistance, thermal conductivity and reliability.

[0088] In this embodiment, the manufacturing steps of the improved third wavelength conversion module are as follows:

[0089] printing a third reflective slurry layer on the non-polished surface of the yellow fluorescent ceramics polished on one side, and drying the third reflective slurry layer;

[0090] On one side of the third transparent heat-conducting substrate, a yellow-light color-correcting coating layer is deposited by vacuum evaporation or magnetron sputtering. The function of th...

Embodiment 3

[0094] Compared with the second embodiment, this embodiment differs in the structure of the first wavelength conversion module.

[0095] Figure 9 It is a cross-sectional view of the first wavelength conversion module in Embodiment 3 of the present invention. Due to the poor heat resistance of the red phosphor, in order to improve the heat resistance of the first wavelength conversion module, such as Figure 9 As shown, in this embodiment, a fluorescent ceramic layer (yellow fluorescent ceramic 310') is also provided between the first wavelength conversion layer 110 of the first wavelength conversion module and the first transparent heat-conducting substrate 130, that is, the first wavelength conversion layer in this embodiment. A wavelength conversion module includes a first transparent heat-conducting substrate 130 , a yellow fluorescent ceramic 310 ′, a first wavelength conversion layer 110 and a first reflection layer 120 sequentially arranged along the incident direction...

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Abstract

The invention discloses a wavelength conversion device and a light source system. The wavelength conversion device comprises a wavelength conversion part and a non-wavelength-conversion part. The wavelength conversion part comprises multiple wavelength conversion modules. Each wavelength conversion module comprises a transparent heat conduction base plate, a wavelength conversion layer and a reflecting layer which are sequentially arranged in the excitation light incidence direction. By means of the wavelength conversion device and the light source system, due to the improvement of the structure of the wavelength conversion modules, the reflecting layers are externally arranged, the thickness of the reflecting layers is increased, and meanwhile heat dissipation of the wavelength conversiondevice can also be optimized. The wavelength conversion modules are independently packaged with different materials, the light efficiency of wavelength conversion modules in different colors is sufficiently improved, and therefore the light emitting efficiency of the wavelength conversion device is improved.

Description

technical field [0001] The invention relates to a wavelength conversion device and a light source system, belonging to the technical field of lighting and display manufacturing. Background technique [0002] Using light sources such as lasers or LEDs to excite phosphors to obtain predetermined monochromatic light or polychromatic light is a technical solution widely used in the fields of lighting sources, projection displays, and the like. This technical solution often uses laser light or LED light to be incident on the high-speed rotating fluorescent pink wheel to achieve good heat dissipation. [0003] The reflective color wheel in the prior art generally includes a substrate, a reflective layer, and a light-emitting layer stacked in sequence. The heat generated by the light-emitting layer being irradiated by laser or LED is conducted to the substrate through the reflective layer, and then dissipated from the substrate to the air. Due to the low thermal conductivity of th...

Claims

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Application Information

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IPC IPC(8): F21V9/40F21V9/30G03B21/20G03B21/16
CPCF21V9/30F21V9/40G03B21/16G03B21/204G02B26/00G03B21/20H01L33/50
Inventor 李乾陈雨叁王艳刚许颜正
Owner APPOTRONICS CORP LTD
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