Laser projection display system based on full-semiconductor laser

Abstract

The invention discloses a laser projection display system based on a full-semiconductor laser. The laser projection display system comprises a laser light source module, a light path module, a circuit module and an optical sensor module, wherein the laser light source module is used for providing three required lasers, namely red laser, blue laser and green laser, for the projection display system; the light path module is used for performing light unification and imaging processing on light provided by the laser light source module, making the light illuminated on chips, transmitting the light modulated by the chips to a projection lens, and forming an image for output; the circuit module is used for regulating the chips in the light path module according to external audio and video signals and regulating the power of the three lasers in the laser light source module according to a certain algorithm and a conditioning signal generated by an optical sensor; and the optical sensor module is used for detecting the brightness of an external environment and the brightness of an image output by the system, forming a conditioning signal according to a certain algorithm and transmitting the conditioning signal to the circuit module. By the laser projection display system, manual or automatic regulation of the color gamut and the brightness is realized.

Description

technical field [0001] The invention relates to the technical field of laser projection display, in particular to a laser projection display system based on all semiconductor lasers that can realize dynamic color gamut and brightness. Background technique [0002] With the progress of society, people have higher and higher requirements for visual effects. Laser display has attracted widespread attention due to its advantages such as wide color gamut, long light source life and good color performance, and may become an important display technology for the next generation. [0003] To output high-brightness images, laser projection display systems require high-power three-color lasers. At present, the existing laser projection display systems mainly use high-power solid-state lasers. Due to the relatively large volume of high-power solid-state lasers and relatively low light efficiency, the application of laser display in the home and business fields is limited. [0004] Ho...

AI Technical Summary

Problems solved by technology

However, the current cost of semiconductor green lasers is relatively high, and the volume is relatively large when outputting high power, which brings difficulties to the application of all-semiconductor laser display technology

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