Wavelength conversion component and laser light source

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...

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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) Use glass or ceramics as a carrier to fix the phosphor powder on the substrate; mix the glass or ceramics with the phosphor powder, heat-melt and sinter and solidify to form a phosphor layer, and then fix the fixed phosphor layer on the substrate with silica gel; but The optical efficiency of the phosphor layer is low. 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, causing the temperature of the phosphor to be higher, thereby reducing the light intensity. Conversion efficiency

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