Laser hybrid light source projector and light source device thereof

Abstract

The invention relates to a laser hybrid light source projector and a light source device thereof. The light source device comprises a blue LED light source, a red LED light source, a green LED light source, lens groups at the front ends of the light sources, a blue semiconductor laser tube, a lens group at the front end of the blue semiconductor laser tube, a spectroscope A and a spectroscope B; the surface of the green LED light source is provided with green fluorescent powder; the green LED light source is opposite to the semiconductor laser tube, the spectroscope B is located between the green LED light source and the semiconductor laser tube, the blue LED light source is arranged at one side of the spectroscope B, and the spectroscope A is arranged at the front of the red LED light source. The laser hybrid light source projector does not use the light source system of a laser projector with a color wheel, so that the influence of the color wheel on the picture quality is avoided; the blue semiconductor laser irradiates the fluorescent powder on the green LED, the brightness of the original green LED is obviously improved without increasing the numerical aperture of the light emitting area of the LED, and accordingly the output brightness of the projector is improved.

Description

[0001] technical field [0002] The invention belongs to the technical field of projection display, and in particular relates to a laser mixed light source projector and a light source device thereof. Background technique [0003] Laser mixed light source means that the light source of the projector is composed of LED and LD (Laser Diode, semiconductor laser). At present, the laser hybrid / pure laser light source (R+B) projector, see the principle scheme figure 1 : The red LED (or red LD) and the blue LD excite the green phosphor on the color wheel to generate green light, the blue LD emits light directly, and alternately irradiates the DMD (Digital Micro mirror Device) in time, using the visual residue of the human eye effect, a color image is presented on the screen through a projection lens. [0004] On the color wheel, about 1 / 5 to 1 / 4 of the circumference area is a piece of transparent glass, and the remaining area of ​​about 3 / 4 to 4 / 5 is a metal plate as thick as gla...

AI Technical Summary

Problems solved by technology

[0005] The shortcomings of using the color wheel are mainly reflected in: due to the use of a rotating mechanical color wheel, the response speed of the entire light source system is greatly reduced, and the inherent advantages of the nanosecond-level high-speed response of the solid light source are not exerted; the speed of the color wheel is limited. Very slight deviation will cause color distortion and image quality deterioration; the color wheel coated with phosphor, the turntable is all exposed to the air, after a period of operation, the color wheel will be dirty, the performance of the projector will decline, and cleaning and maintenance are required

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