Color regulating plate for solid light source projector

Abstract

The invention discloses a color regulating plate for a solid light source projector, wherein a fixing hole is arranged on the center of the color regulating plate; the plate is divided a blue light area, a green light area and a red light area along the circumferential direction; the blue light area is provided with a light filter capable of penetrating blue and red lights but reflecting green light, a green fluorescent powder layer, a substrate and a light filter capable of penetrating green light but reflecting blue and red lights, from an incidence side to an emergent side; the red light area is provided with the light filter capable of penetrating blue and green lights but reflecting red light, a red fluorescent powder layer, the substrate and the light filter capable of penetrating red light but reflecting blue and green lights, from incidence side to emergent side; and the blue light area comprises the substrate. The chromaticity of three basic color lights of the color regulating plate is matched by adjusting the opening circumferential angles in the blue light area, the green light area and the red light area after a solid light source and the red and green fluorescent powder layers are confirmed. The color regulating plate can generate blue, green and red three basic color lights. When the color regulating plate is used, the color regulating plate rotates at a fixed speed, the color picture having no flicker and no tail of moving objects can be observed, and the color regulating plate has the advantages of high light efficiency, low power consumption, long service life, safety, light and handy property, and the like.

Description

technical field [0001] The invention relates to a color modulation disc used in a solid light source projector to generate three primary color lights of blue (B), green (G) and red (R). Background technique [0002] Most current digital projectors use ultra-high pressure (UHP) mercury lamps as the light source, with a power consumption of 100-300 watts and a light effect of 60 lumens / watt, so the brightness that can be produced is greater than 6000 lumens, but due to the minimum arc length of the bulb It is 1-1.4mm, so the light energy utilization rate is only about 20%, and the average life of the bulb is about 3000 hours. Obviously, due to the high power consumption and short life of the light bulb, its application into the home is greatly limited. [0003] Light-emitting diodes (LEDs) and laser diodes (LDs) are being rapidly popularized and applied as a new generation of energy-saving and environmentally friendly solid-state light sources. Their advantages: First, high l...

AI Technical Summary

Problems solved by technology

[0004] In digital projectors with LED and LD as light sources, because a single solid light source still has the problem of insufficient brightness, the solid light sources of the three primary colors of blue, green, and red must use multiple LEDs or LDs to form three sets of array light sources to meet certain requirements. The brightness requirements of the solid light source will bring a problem of difficulty in heat dissipation of the solid light source, increase in the volume of the projector, and increase in cost. It is a wise choice to increase the number of light sources, alleviate the difficulty of heat dissipation, and reduce the size and cost of the projector.

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