Optical engine

Abstract

The invention discloses an optical engine, and belongs to the field of laser projection and laser light sources. The optical engine comprises a light source assembly, a prism assembly, at least two light valves and a lens assembly. Light beams emitted by the light source assembly enter the at least two light valves, the light valves process the received light beams and then output the light beams to the prism assembly, and the prism assembly receives the light beams output by the light valves and emits the light beams to the lens assembly. According to the optical engine provided by the invention, the refractive indexes of prisms in the prism assembly are equal, and traveling distances of the light beams output by the at least two light valves between the light valve light-in surfaces of the prism assembly and the light-out surfaces of the prism assembly are equal so that the sizes of the light beams output by the light valves are the same when the light beams exit the prism assembly. The problem that the sizes of the light beams emitted by different light valves are possibly different when the light beams are emitted to a lens from the prism assembly in the prior art is solved. The sizes of the plurality of light beams emitted from the prism to the lens are consistent so that the imaging quality of the optical engine is improved.

Description

technical field [0001] The present application relates to the field of laser projection and laser light source, in particular to an optical engine. Background technique [0002] At present, laser projection technology is a new type of projection technology on the market. The main advantages of laser light source are high brightness, bright colors, low energy consumption, long life and small size, which makes laser projection technology have high picture contrast and clear imaging. characteristics, so laser projection technology has become the mainstream development direction in the market. With the development of projector technology and the market, in order to enable users to experience better viewing enjoyment when using the projector during the day, projectors with higher brightness are required, but the luminous flux output by the single light valve projector system is after all Limited, higher luminous flux requires multiple light valve systems. [0003] An optical en...

AI Technical Summary

Problems solved by technology

[0004] However, in the above optical engine, the beams emitted by different light valves may have different sizes when they are emitted from the prism assembly to the lens, which may lead to poor imaging quality

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