Laser projection equipment

A technology of laser projection and equipment, which is applied in the directions of optics, image reproducers using projection devices, instruments, etc., can solve the problems that cannot be fully received by the beam splitting module 16, the size is too large, and the miniaturization design of the laser projection equipment 10 is disadvantageous. Achieve the effect that is conducive to miniaturized design
CN103747221AActive Publication Date: 2014-04-23QISDA OPTRONICS (SUZHOU) CO LTD +1
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
QISDA OPTRONICS (SUZHOU) CO LTD
Publication Date
2014-04-23

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Abstract

The invention provides laser projection equipment. The laser projection equipment comprises a light combination module and a light splitting module, wherein the light combination module comprises a first laser light source group, a quarter-wave plate, a first spectroscope and a reflector; the first laser light source group comprises a first laser light source and a second laser light source, which are oppositely arranged and are used for respectively transmitting first polarized light and second polarized light with the same polarization; the first spectroscope is inclined to the quarter-wave plate for reflecting the second polarized light to penetrate the quarter-wave plate and reflecting the first polarized light; the reflector is parallel to the quarter-wave plate and is adjacent to the first laser light source group for reflecting the second polarized light to the quarter-wave plate so as to cause the second polarized light to penetrate through the first spectroscope and to be combined with the first polarized light to form laser beam after penetrating through the quarter-wave plate. The light splitting module is used for receiving the laser beam so as to split the laser beam into a plurality of imaging colored light.
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Description

technical field

[0001] The present invention relates to a laser projection device, especially a laser projection module that uses a beam splitter, a quarter-wave plate and a reflector to combine polarized light to directly reduce the size of the laser beam generated by the light combination module. Background technique

[0002] Generally speaking, common laser projection equipment adopts the configuration of light combining module and light splitting module to generate multiple imaging color lights for subsequent projection and imaging. For the relevant configuration, please refer to figure 1 . figure 1 It is a schematic diagram of a laser projection device 10 in the prior art. Such as figure 1 As shown, the laser projection device 10 includes a light combining module 12, a light guide module 14, and a light splitting module 16, wherein the light combining module 12 includes a plurality of mirrors 18, a plurality of first laser light sources 20, and a plurality of second l...

Claims

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