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Light source device for laser display

A light source device and laser display technology, which is applied in the coupling of lasers, laser parts, optical waveguides, etc., can solve the problems of system instability, unsatisfactory effect, complex structure, etc. The effect of reducing power consumption

Inactive Publication Date: 2009-12-02
PHOEBUS VISION OPTO ELECTRONICS TECH
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Problems solved by technology

[0005] However, in laser display, in the method of dispersing speckle and shimming in the above two patents, the more lasers there are, the more significant the effect of dispersing speckle is. Therefore, in this technology, multiple lasers are used for laser display The devices all have the problems of large volume, high cost, and complex structure, and the use of too many lasers is prone to various problems, resulting in system instability and difficult maintenance, so the effect of practical application is not ideal

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Embodiment Construction

[0028] image 3 It is an embodiment of a laser light source device using an optical fiber. The laser light source device includes n lasers L1-Ln (n is an integer, and n≥2) arranged in sequence in the optical path and a beam combining device. The beam combining The device includes n optical fibers 33 , a bundling device 34 for bundling the n optical fibers 33 , and a coupling device 32 arranged between the n lasers and their corresponding n optical fiber input ends. Each laser corresponds to one of the optical fibers 33 , and each laser is respectively arranged at the input end of the corresponding optical fiber. The coupling device 32 may include n collimating lenses and / or n focusing lenses, and the laser beams emitted by each laser are respectively subjected to beam shaping (collimating and / or focusing lenses) through corresponding collimating lenses and / or focusing lenses in the coupling device 32 or focusing) and then coupled into the corresponding optical fiber 33, the l...

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Abstract

The invention provides a light source device for laser display, which is characterized in that the light source device for laser display comprises a plurality of lasers for outputting polarization laser light and a beam combining device combining laser light transmitted by the plurality of lasers, wherein, the laser light transmitted by the lasers is respectively irradiated into the beam combining device so as to be combined into a laser beam via the beam combining device to be output; a plurality of bunches of laser light output by the plurality of lasers have various polarization directions. The invention lowers the production cost of laser source devices, reduces volume and lowers power consumption, and thus the invention has wider applicable range and situation.

Description

technical field [0001] The invention relates to the field of laser display, in particular to a light source device for laser display. Background technique [0002] Due to its high brightness, monochromaticity and directivity, laser has incomparable advantages in the field of display. Laser is coherent. If it is directly projected as a light source without decoherence processing, we will see an image with obvious interference fringes on the receiving screen, which is the so-called speckle, which greatly affects the image quality, so in In laser display technology, decoherence is an essential step. [0003] The Chinese patent whose publication number is CN101144876 adopts the method of multi-beam laser coupling to realize the functions of shimming and dissipating speckles. like figure 1 As shown, L1-Ln are RGB (red, green, blue) three-color laser light sources, which are placed in parallel in the same direction, and the light emitted by the laser is shaped by a shaping devi...

Claims

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Application Information

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IPC IPC(8): G02B27/48G02B6/42H01S5/00H01S3/00
Inventor 许江珂石靖波贾中达
Owner PHOEBUS VISION OPTO ELECTRONICS TECH
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