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Fluorescence conversion system

A technology of conversion system and fluorescence, which is applied in the field of conversion system, can solve the problems of light attenuation and other problems, and achieve the effect of reducing light attenuation and reducing the easy accumulation of dust

Active Publication Date: 2017-01-11
QINGDAO HISENSE LASER DISPLAY CO LTD
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Problems solved by technology

[0005] When applied to products, technicians found that the blue laser will experience serious light attenuation after passing through the above-mentioned wavelength conversion components and lens components.

Method used

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Embodiment Construction

[0028] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] An embodiment of the present invention provides a fluorescence conversion system, such as image 3 As shown, it includes a laser excitation light source 11, a fluorescent wheel 13, a first lens assembly 131a and a second lens assembly 131b respectively located on both sides of the fluorescent wheel. Among them, fluorescent wheel 13, such as Figure 4 As shown, it includes a reflective part 136 and a transmissive part 135. The re...

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Abstract

The invention discloses a fluorescence conversion system comprising a laser excitation light source, a fluorescent wheel, a first lens assembly and a second lens assembly. The first lens assembly and the second lens assembly are arranged at the front side and the back side of the fluorescent wheel. The laser excitation light source enters the fluorescent wheel by the first lens assembly to excite the fluorescent wheel to emit fluorescent light; the fluorescent light is reflected by the fluorescence wheel and then is emitted by the first lens assembly; and the laser excitation light source passes through the fluorescent wheel and is emitted by the second lens assembly. A distance between the second lens assembly and the first lens assembly is larger than an equivalent focal length of the first lens assembly, thereby reducing light attenuation caused by passing through the second lens assembly by the laser excitation light source.

Description

technical field [0001] The present invention relates to the technical field of laser projection light sources, in particular to a conversion system that uses laser excitation to generate fluorescence. Background technique [0002] At present, laser is used in the field of projection display because of its high brightness, strong monochromaticity, and wide color gamut. However, due to the high cost of laser and the serious image speckle phenomenon caused by laser, the current commercial laser source Mixed light source with LED light source or fluorescent light. [0003] figure 1 A schematic diagram of an optical system for laser-excited fluorescence is shown. The hybrid light source system includes a laser array 11 that emits laser light. The blue light in nature has a short wavelength and the cost of blue lasers is relatively low. Blue lasers are usually selected. The principle of fluorescence generation is to use the high energy of the laser to excite the phosphor to emit...

Claims

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Application Information

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IPC IPC(8): G03B21/20F21V9/10G02B27/10F21V9/40
Inventor 田有良李巍刘显荣张勇
Owner QINGDAO HISENSE LASER DISPLAY CO LTD
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