Single DLP (digital light processing) projector with laser light sources
A laser light source and projector technology, applied in the optical field, can solve the problems of low color saturation, noise, rainbow phenomenon image signal, etc., and achieve the effect of solving the problem of poor color saturation
Inactive Publication Date: 2013-06-26
BOSHLAND MEDIA CO LTD
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Problems solved by technology
The structure of the color wheel is removed, which fundamentally solves the problems caused by the above-mentioned color wheel; by using the three primary color lights provided by the three primary color lasers to replace the three primary color lights produced by a single composite light source through the color wheel , It completely solves the problems of low color saturation, "rainbow phenomenon" and image signal noise in the traditional single DLP technology, and at the same time greatly improves the brightness and lifespan. Calculated by continuous use for 24 hours a day for 365 days, the lifespan is about 5 years
Method used
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Embodiment 1
[0033] as attached figure 2 and 3 As shown, the single DLP projector of the present invention includes: zoom focus projection lens group 1; DMD chip 2; supporting heat dissipation system 3; control circuit system 4; light source group 5; beam expander group 6; rectangular hole shutter 7; " Cross" prism group 8; high-frequency pulse power supply group 9.
[0034] The high-frequency pulse power supply 9 supplies pulse power to the R, G, and B lasers of the light source group respectively at a frequency of 200 Hz. The thin-beam laser emitted by the laser is respectively expanded into beams of required diameter through the beam expander group 6. Then the light beam is adjusted by the rectangular hole shutter 7 to become a rectangular light beam meeting the required size. The R, G, and B three beams of laser light respectively enter the "cross" prism group 8 from three directions, and then output from the fourth direction respectively. The output light beam can be connected to...
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The invention discloses a single DLP (digital light processing) projector with laser light sources. The single DLP projector structurally comprises a variable-focal-length focusing projection lens set, a DMD (digital mirror device) chip, a matched cooling system, a control circuit system, a light source set, a beam expander set, a rectangular hole dimmer, a 'cross-shaped' prism set and a high-frequency pulse power source set. The high-frequency pulse power source set supplies power for lasers, the lasers emit light sequentially passing the beam expander, the rectangular dimmer and the 'cross-shaped' prism set to reach the variable-focal-length focusing projection lens set. By omitting the structure of colored wheels, the problems caused by the colored wheels are solved thoroughly, three primary colors provided by RGB (red, green and blue) lasers are substituted for those generated by a single composite light source through the colored wheels, the problems of low color saturation, 'rainbow effect' and image signal noise of conventional single DLP technique are solved thoroughly, luminance is greatly improved and the service life is prolonged simultaneously.
Description
technical field [0001] The invention relates to a design and manufacture method of a single DLP projector with a laser light source structure, and belongs to the field of optical technology. Background technique [0002] Current projection technologies are divided into three categories: LCD technology, DLP (Digital Light Processing, digital light processing) technology, and LCos technology. Among them, LCos technology is still under development, and LCD and DLP are mainstream technologies. [0003] As a very mature projection technology, LCD technology has its advantages, such as high color saturation and so on. But there are many problems: LCD is difficult to achieve no light output; LCD technology still has convergence problems; LCD technology will have image retention of still images; LCD panels and polarizers will decay over time, resulting in image quality degradation problems and so on. [0004] The DLP technology can mostly overcome the above problems, and the mains...
Claims
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Login to View More IPC IPC(8): G03B21/20G03B21/14
Inventor 孙迪
Owner BOSHLAND MEDIA CO LTD