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Efficient laser projection system

A laser projection, high-efficiency technology, applied in optics, instruments, projection devices, etc., can solve the problems of low optical efficiency and poor uniformity, and achieve the effect of improving efficiency, improving uniformity, and solving difficult installation and adjustment.

Inactive Publication Date: 2017-01-11
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a high-efficiency laser projection system, realize a new output mode of red, green and blue light, and solve the problems of low optical efficiency and poor uniformity in the traditional technology

Method used

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Embodiment

[0035] Such as figure 1 As shown, the high-efficiency laser projection system in this embodiment includes: a laser light source module 101; a beam expander lens group 102; a diffusion sheet 103; a light combining element 104; Light transfer module 107 / 108; three-color light combining element 109; color filter system 110; light tunnel device 111; lighting element group 112; light valve 113; projection lens 114.

[0036] In a specific implementation, the laser light source module 101 is a semiconductor laser light source plus a collimator lens corresponding to a single semiconductor laser light source. For example, the semiconductor laser light source is a laser diode, and the collimator lens is an aspherical glass lens. Further, the laser diode can be a blue laser diode bank array (Blue Laser diode Bank array), and the aspheric glass lens can be a collimating lens array corresponding to a single blue laser diode bank array, so that the light beam output by the laser light sour...

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Abstract

The invention relates to the technical field of laser displaying, and discloses an efficient laser projection system. A novel red-light green-light blue-light output mode is achieved, and the problems that in the traditional technology, the optical efficiency is low, and the evenness is bad are solved. The efficient laser projection system comprises laser light source modules (101), a beam expanding lens set (102), a diffusion sheet (103), a light compounding element (104), a fluorophor color conversion device (106), collimating condensing lens sets (105), blue-light transmission modules (107 / 108), three-color light compounding elements (109), a color filtering system (110), a light tunnel device (111), lighting element sets (112), a light valve (113) and a projection lens (114). The efficient laser projection system is suitable for laser projection displaying.

Description

technical field [0001] The invention relates to the technical field of laser display, in particular to an efficient laser projection system. Background technique [0002] In recent years, laser projection display systems have been widely used in various occasions due to their advantages such as long service life, rich colors and high screen brightness. Due to the high coherence of laser light, serious speckles appear on the screen of laser projection display systems using pure laser light source lighting modules, which greatly weakens the viewing effect of users. The price of such laser display products is also very high. It can only be used in large-scale film projectors and engineering projection markets. [0003] At present, the mainstream laser display products entering the home use blue laser diodes to excite phosphors to produce three primary colors. In this scheme, laser diodes can be arranged in multiple arrays, and the laser beam is focused on the surface of phosph...

Claims

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Application Information

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IPC IPC(8): G03B21/20
CPCG03B21/204G03B21/208
Inventor 文玮何龙陈志洁
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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