Wavelength conversion component and laser light source

A technology of wavelength conversion and components, applied in optics, instruments, projection devices, etc., can solve the problems of not meeting the conditions of high-power laser use, low thermal conductivity of silica gel, low thermal conductivity, etc., to ensure thermal stability and light conversion efficiency , Guaranteed heat exchange efficiency and high light conversion efficiency

Active Publication Date: 2020-02-25
QINGDAO HISENSE LASER DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) Use silica gel as a carrier to fix the phosphor on the substrate; mix the phosphor with silica gel, and then stick it on the substrate; due to the low thermal conductivity of silica gel and the low maximum temperature of silica gel, it cannot meet the requirements The use conditions of high-power lasers; in addition, due to the low thermal conductivity of silica gel, when the high-energy laser beam is irradiated on the phosphor, the temperature diffuses slowly, resulting in a higher temperature of the phosphor, thereby reducing the conversion efficiency of light
[0005] (2) Us

Method used

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  • Wavelength conversion component and laser light source
  • Wavelength conversion component and laser light source
  • Wavelength conversion component and laser light source

Examples

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Example Embodiment

[0042] Example one

[0043] Specific, such as figure 1 with figure 2 As shown, in the embodiment of the (reflective) wavelength conversion component 1 provided by the present invention, the substrate 10 is configured as a disc-shaped structure, and the fluorescent layer 11 is located on the first surface of the substrate 10.

[0044] Further, the wavelength conversion component 1 has two fan-shaped wavelength conversion regions 101 and a fan-shaped transmission region 102. One of the wavelength conversion regions 101 has a fan-shaped yellow fluorescent layer 11, specifically, the yellow fluorescent layer 11 is exposed to laser light. The excitation produces yellow fluorescence; the other wavelength conversion region 101 has a fan-shaped green fluorescent layer 11, specifically, the green fluorescent layer 11 is excited by laser to produce green fluorescence. Wherein, in other embodiments, in order to save material, the fluorescent layer 11 may be a ring structure, wherein the cent...

Example Embodiment

[0056] Example two

[0057] Specific, such as figure 1 with image 3 As shown, in the embodiment of the (transmissive) wavelength conversion component 1 provided by the present invention, the substrate 10 is configured as a disc-shaped structure, and the fluorescent layer 11 is located on the first surface of the substrate 10.

[0058] Further, the wavelength conversion component 1 has two fan-shaped wavelength conversion regions 101 and a fan-shaped transmission region 102. One of the wavelength conversion regions 101 has a fan-shaped yellow fluorescent layer 11, specifically, the yellow fluorescent layer 11 is exposed to laser light. The excitation produces yellow fluorescence; the other wavelength conversion area 101 of the laser beam has a fan-shaped green fluorescent layer 11, specifically, the green fluorescent layer 11 is excited by the laser to produce green fluorescence. Wherein, in other embodiments, in order to save material, the fluorescent layer 11 may be a ring struct...

Example Embodiment

[0069] Example three

[0070] Such as Figure 4 As shown, in this embodiment, the wavelength conversion component 1 is a (reflective) wavelength conversion component 1 of the embodiment. Figure 4 The straight line in the optical path represents the laser beam, and the dotted line represents the fluorescent beam (including yellow fluorescence and green fluorescence).

[0071] Specifically, the light beam emitted by the laser is blue light (spectral range is 420nm-470nm), which is adjusted to a stable parallel light after the lens assembly 3a, and then passes through the dichroic mirror 4a to the lens assembly 3b, and the lens assembly 3b is used for The laser beam is focused and collimated, and the laser beam is directed to the wavelength conversion component 1 after passing through the lens assembly 3b.

[0072] When the laser beam is directed to the transmission area 102, the laser beam passes through the transmission area 102 and is directed to the lens assembly 3c. The lens assem...

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PUM

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Abstract

The embodiment of the invention provides a wavelength conversion component and a laser light source, relates to the technical field of optical equipment, and solves the technical problems of low thermal reliability and low light conversion efficiency of the wavelength conversion component. The wavelength conversion component comprises a substrate, the substrate comprises a transmission area and atleast one wavelength conversion area, and a fluorescent layer is cured and formed in the wavelength conversion area. The transmission area is used for transmitting laser, and the fluorescent layer isused for being excited by the laser to generate fluorescence. According to the invention, the fluorescent layer is directly cured and formed on the wavelength conversion area, so that the intervention of other connecting media is avoided, the high heat resistance of the fluorescent layer is reserved to the maximum extent, and meanwhile, the heat exchange efficiency between the fluorescent layer and the substrate is greatly guaranteed due to the close fit of the fluorescent layer and the substrate. Thus, the thermal stability and the light conversion efficiency of the wavelength conversion component are ensured.

Description

technical field [0001] The invention relates to the technical field of optical equipment, in particular to a wavelength conversion component and a laser light source. Background technique [0002] Lasers are widely used in projection display devices because of their advantages of high brightness, strong monochromaticity, and wide color gamut. Nowadays, the size of projection displays is getting larger and larger, and the requirements for output energy of light sources are also getting higher and higher. [0003] At present, laser light sources widely use high-energy lasers to excite phosphors to emit light; the wavelength conversion components in the prior art are mainly fluorescent wheels, which include circular substrates, phosphors are fixed on the substrates through carriers, and laser beams are irradiated on the phosphors to realize light emission. In general, the fixation methods between the phosphor powder and the substrate can be roughly divided into two types: [0...

Claims

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Application Information

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IPC IPC(8): G03B21/20
CPCG03B21/204G03B21/2066G03B21/2013G03B21/206
Inventor 张勇高迪
Owner QINGDAO HISENSE LASER DISPLAY CO LTD
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