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Wavelength conversion device and related fluorescent color wheel and projection device

A technology of wavelength conversion device and fluorescent color wheel, which is applied in the direction of lighting devices, projection devices, lighting device components, etc., can solve the problems of low outgoing light efficiency and large optical expansion, and achieve high outgoing light efficiency and not easy to crack Deformation, high hardness effect

Active Publication Date: 2018-07-20
APPOTRONICS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the defects of low light emission efficiency and large etendue of the above-mentioned wavelength conversion device in the prior art, the present invention provides a wavelength conversion device capable of providing output light with high efficiency and small etendue

Method used

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  • Wavelength conversion device and related fluorescent color wheel and projection device
  • Wavelength conversion device and related fluorescent color wheel and projection device
  • Wavelength conversion device and related fluorescent color wheel and projection device

Examples

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Embodiment 1

[0033] Such as figure 1 as shown, figure 1 It is a schematic structural diagram of a wavelength conversion device according to Embodiment 1 of the present invention. The wavelength conversion device includes a light-emitting layer 101, a sapphire layer 102, and a specular reflection film 103, wherein between the light-emitting layer 101 and the sapphire layer 102, the sapphire layer 102 and the specular reflection film 103 close connection between them.

[0034] In the working state, the light emitted by the luminescent layer 101 passes through the sapphire layer 102 , reaches the specular reflection film 103 , is reflected by the specular reflection film 103 , passes through the sapphire layer 102 and the luminescent layer 101 in sequence, and then exits. The heat generated by the light-emitting layer 101 is conducted to the specular reflection film 103 through the sapphire layer 102 and dissipated from the sapphire layer 102 and the specular reflection film 103 .

[0035] ...

Embodiment 2

[0044] See image 3 , image 3It is a structural schematic diagram of the fluorescent color wheel of the second embodiment of the present invention. Compared with Embodiment 1, the fluorescent color wheel of this embodiment has an additional driving device 305, which is used to drive the wavelength conversion device to rotate.

[0045] Compared with the fixed wavelength conversion device without the driving device 305 , the fluorescent color wheel in this embodiment uses rotation to dissipate heat faster, so that it can work under higher optical power.

[0046] Figure 4 It is a structural schematic diagram of a modified embodiment of the second embodiment. Compared with the second embodiment, the sapphire layer 402 is fixedly connected with the driving device 405, the driving device 405 drives the sapphire layer 402 to rotate, and the sapphire layer 402 drives the light emitting layer 401 and the mirror reflection film 403 to rotate. Since the sapphire layer 402 has a cry...

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Abstract

The invention discloses a wavelength conversion device, a relevant fluorescent color wheel and a relevant projection device. The wavelength conversion device comprises a light-emitting layer, a sapphire layer and a specular reflection film which are stacked in sequence. The sapphire layer is used for supporting the light-emitting layer and the specular reflection film. The sapphire layer has the beneficial effects of being high in hardness, good in surface flatness and high in heat conductivity, so that plating of the specular reflection film is facilitated, heat can be evenly spread to the surface of the specular reflection film, the specular reflection film is not liable to crack or deform in the plating and using process, high reflectivity can be maintained during long-time work, and the light-emitting efficiency of the wavelength conversion device is high.

Description

technical field [0001] The invention relates to the field of light-emitting devices, in particular to a wavelength conversion device, a related lighting device, a fluorescent color wheel and a projection device. Background technique [0002] With the development of display and lighting technology, the original halogen bulb as a light source is increasingly unable to meet the high power and high brightness requirements of display and lighting. Visible light of various colors can be obtained by using excitation light emitted by a solid-state light source such as an LD (Laser Diode, laser diode) to excite wavelength conversion materials, and this technology is increasingly used in lighting and display. This technology has the advantages of high efficiency, low energy consumption, low cost, and long life, and is an ideal alternative to existing white or monochromatic light sources. [0003] Due to the high efficiency of the reflective wavelength conversion device, it is widely ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21V9/40G03B21/20
Inventor 胡飞杨佳翼
Owner APPOTRONICS CORP LTD
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