Laser projection display device based on optical fibre laser

Abstract

The disclosed laser projection display device based on fiber laser comprises: from front to back, a fiber laser device to generate three primary colors, a light path modulation device, a beam synthesis device, a scanner, a projection objective, and a display screen, wherein the laser device comprises a red fiber laser as outside added frequency structure, a green and blue fiber laser both as inner double frequency structure. This invention improves laser display quality greatly with low cost and long lifetime.

Description

technical field [0001] The invention belongs to the field of laser video display, which uses fiber lasers as the laser light source in laser video display, which can greatly improve the performance of laser projection display, such as clarity, resolution and brightness. Laser projection display device with fiber laser. Background technique [0002] Since the 1990s, with the continuous development of high and new technologies, TV display technology has also been constantly introducing new ones. Various color TV display technologies have been researched internationally, such as LCD TV display technology, rear projection TV display technology, plasma TV display technology, etc. TV display technology and more. With the development of all-solid-state laser technology, especially the appearance of red, green, and blue primary-color lasers that can produce high power and high beam quality, the development of laser color TV display technology has been promoted. Using the advantage...

AI Technical Summary

Problems solved by technology

At present, laser TV is still in the stage of experimental research, and the main factors hindering its commercialization and civilian use are: (1) the primary color laser source is bulky and expensive; (2) the high-speed scanning device is technically difficult

At present, the primary color light source of laser TV is mainly obtained through the following two methods: (1) using beam expansion technology to obtain uniform light projection, but there is serious interference noise in the picture; (2) using rapidly developing all-solid-state lasers as red and green , blue primary color generation device, the current experimental research on laser TV mostly uses this method to obtain the primary color light source, combined with the advantages of high power and high beam quality of solid-state lasers, it can greatly improve the resolution and stability of laser color video images , clarity, brightness and other performances, but the all-solid-state lasers used in laser TVs are bulky and require water-cooling devices, and the cost is high. Combined with the high-speed scanning system, the volume is also relatively large, etc. These inherent defects will increase the volume of laser TVs And increase its price, thus seriously hindering the commercialization and civilian use of laser TV

Images