Laser projection light source module and beam shaping method thereof as well as laser display equipment

A technology of laser module and light source module, which is applied in the field of optics, can solve the problems of increasing etendue of laser beams, unsatisfactory effect of dissipating speckles, and unreceivable effects, and achieve the effect of improving the effect of dissipating speckles and compressing etendue

Inactive Publication Date: 2011-08-10
HISENSE VISUAL TECH CO LTD
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Problems solved by technology

However, since the coherence of the laser light source will cause speckle in the projected image, in order to reduce the speckle noise of the image, the speckle elimination module will be placed between the light source and the optical machine, and the speckle elimination module will increase the etendue of the laser beam. So that the light beam of the light source cannot be effectively received by the light machine
Due to the limitation of etendue, the scattering angle of the speckle dissipation module cannot be too large, and the speckle dissipation effect is not ideal.

Method used

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  • Laser projection light source module and beam shaping method thereof as well as laser display equipment
  • Laser projection light source module and beam shaping method thereof as well as laser display equipment
  • Laser projection light source module and beam shaping method thereof as well as laser display equipment

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Embodiment Construction

[0015] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0016] figure 1 is a schematic diagram of a projection system according to an embodiment of the present invention.

[0017] Such as figure 1 As shown, the projection system includes a laser light source module ( figure 1 inside the dotted line box) and the projection module.

[0018] The laser light source module includes three parts: monochrome red, green, and blue laser modules, namely, red light module 10, green light module 20 and blue light module 30, polychromatic light optical etendue compression module 200, and laser decoherence module 300. The laser light source module may also include a shaping and uniform light module.

[0019] The red, green, and blue monochromatic laser module...

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Abstract

The invention discloses a laser projection light source module and a beam shaping method as well as laser display equipment. The laser projection light source module comprises a first laser module for emitting a first beam, a second laser module for emitting a second beam, a third laser module for emitting a third beam, and an optical coupler for receiving the first beam, the second beam and the third beam, and coupling the first, second and third beams into a first coupling beam, wherein the first laser module, the second laser module and the third laser module are the laser modules with different colours. By the invention, the speckle dissipating effect of the laser projection light source module can be improved.

Description

technical field [0001] The invention relates to the field of optics, in particular to a laser projection light source module, a beam shaping method thereof, and a laser display device. Background technique [0002] Laser display technology has the characteristics of rich colors, energy saving and environmental protection, and is considered to be the next generation mainstream display technology. Compared with LED light sources, the etendue of laser light sources is much smaller, which is conducive to the design of efficient projection light machines. However, since the coherence of the laser light source will cause speckle in the projected image, in order to reduce the speckle noise of the image, the speckle elimination module will be placed between the light source and the optical machine, and the speckle elimination module will increase the etendue of the laser beam. As a result, the light beam of the light source cannot be effectively received by the light machine. Due ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20G02B27/48G02B27/09G03B21/00F21V13/00
Inventor 陈昱田有良李巍
Owner HISENSE VISUAL TECH CO LTD
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