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Light emitting unit, light source system and laser projection equipment

A light-emitting unit and light source system technology, applied in the field of projection, can solve the problems of damage to the fluorescent layer, low fluorescence excitation efficiency, poor heat dissipation effect of the fluorescent wheel, etc., and achieve the effect of low working temperature, high conversion efficiency, and rapid heat dissipation

Active Publication Date: 2021-11-19
QINGDAO HISENSE LASER DISPLAY CO LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the heat dissipation effect of the fluorescent wheel is poor
Moreover, when the working temperature of the fluorescent wheel is high, the fluorescence excitation efficiency of the fluorescent layer in the fluorescent wheel is low, and the fluorescent layer will also be damaged

Method used

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  • Light emitting unit, light source system and laser projection equipment
  • Light emitting unit, light source system and laser projection equipment
  • Light emitting unit, light source system and laser projection equipment

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Embodiment Construction

[0029] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0030] In the laser light source system, lasers are used to excite fluorescent materials to produce different colors of fluorescence as light sources for projection display systems. Compared with projection display light sources that use traditional bulb light sources, laser-excited fluorescent light sources have high brightness and bright colors. Low energy consumption and long service life make the projection equipment have the characteristics of high picture contrast and clear imaging.

[0031] Fluorescence is the light emitted by substances that absorb light or other electromagnetic radiation. That is, when a substance at room temperature is irradiated by incident light of a certain wavelength (usually ultraviolet rays or X-r...

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Abstract

The invention discloses a light emitting unit, a light source system and laser projection equipment, and belongs to the technical field of projection. The light emitting unit comprises a heat conduction substrate, a packaging shell, a light combining part, a fluorescent part, a first light emitting chip and a second light emitting chip, wherein the light combining part in the light emitting unit can guide light beams emitted by the first light emitting chip to the fluorescent part to excite fluorescence, meanwhile, the light combining part can guide light beams emitted by the second light emitting chip and the fluorescence excited by the fluorescent part to a light outlet of the packaging shell together, and the light outlet can output white light beams in a mixed mode. In addition, the fluorescent part is in direct contact with the heat conduction substrate. Therefore, the heat generated by the fluorescent part can be quickly transferred to the whole heat conduction substrate, so that the fluorescent part can be quickly radiated, the working temperature of the fluorescent part is lower, the conversion efficiency of the fluorescent part to fluorescence is higher, and the overall brightness of the light emitting unit is higher.

Description

technical field [0001] The present application relates to the field of projection technology, in particular to a light emitting unit, a light source system and a laser projection device. Background technique [0002] At present, the light sources of projection equipment are mainly divided into three types, namely, traditional light bulb light sources, light-emitting diode light sources (English: light-emitting diode; abbreviation: LED) and laser light sources. Among them, laser light sources are used as light sources for projection equipment. Bright colors, low energy consumption and long service life make the projection equipment have the characteristics of high picture contrast and clear imaging. [0003] A laser light source system includes: a laser, a fluorescent wheel and an optical path assembly. The laser includes multiple laser units for emitting monochromatic laser light. The fluorescent wheel includes a base plate and a fluorescent layer on the base plate. Where...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/16G03B21/14G03B21/20
CPCG03B21/16G03B21/145G03B21/204G03B21/206G03B21/2066G03B21/208
Inventor 张勇田有良
Owner QINGDAO HISENSE LASER DISPLAY CO LTD
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