New type colorful laser projection display device

Abstract

The invention discloses a novel colored laser projecting display device and belongs to the technical field of laser display. The novel colored laser projecting display device comprises a laser sourcemodule, a polarization light splitting prism, a dispersive splitting and beam combing component, a micro-display device, a projecting lens and a scanning mirror; wherein, three colored linear laser beams of red, green and blue output by the laser source module is projected to the scanning mirror to be scanned to form images after being modulated by the micro-display device respectively; as the proposal of linear beam scanning is adopted and the three colored laser beams of red, green and blue are modulated and recombined respectively after being dispersed by the dispersive splitting and beam combing component, so the design proposal of color separating time sequence modulation is not needed. Compared with the existing traditional projecting technical proposal, the invention has the advantages of simplifying the systematic design without modulating the laser, improving the utilization efficiency of laser source and enhancing the brightness of projecting images.

Description

technical field [0001] The present invention relates to a projection display device, more specifically, to a color laser projection display device that uses red, green and blue lasers as light sources, and simultaneously uses a spatial light modulator and a line scanning scheme. Background technique [0002] Traditional projection display devices generally use light sources such as metal halide bulbs, UHE (Ultra high efficiency) bulbs, and UHP (Ultra high performance) bulbs. Their common disadvantages are low electro-optical conversion efficiency, short life, and high cost. Usually, after thousands of hours of operation, the brightness will be seriously attenuated; due to technical limitations, the use of light bulbs as light sources also leads to the current projection system being too bulky. At the same time, due to the limitation of the light-emitting mechanism of the bulb, the color gamut of its imaging is small, and it is impossible to achieve more realistic color repro...

AI Technical Summary

Problems solved by technology

However, linear array spatial light modulators such as GLV and GEMS belong to MEMS (Micro-electromechanical System) devices, which have high cost and low light energy utilization rate; at the same time, the pixel unit size of such devices is relatively large, resulting in large device volume , more suitable for projection systems with larger shapes, which is not conducive to controlling the volume of projection systems

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