A projector with expandable laser light source

Abstract

The invention discloses a projector extensible to a laser light source. The projector comprises a projection lens, an optical engine module, a laser light source module, a fixed plate and a shaping lens, wherein the fixed plate is connected with the laser light source module; the laser light source module comprises a metal shell and a laser array; the laser array is arranged on an inner substrate in the metal shell; an optical path of each semiconductor laser in the laser array is provided with an inclined first reflection lens; a column of second reflection lenses and a third reflection lens are arranged at the same side of the laser array; and the third reflection lens and the shaping lens are correspondingly arranged. The projector can support expansion in design of the quantity of the lasers and can support expansion in design of the laser light source module, so that the flexibility for developing products with different brightness is greatly improved; the laser projector can reach very high brightness; and meanwhile, due to the design of the laser light source module, later maintenance is very convenient.

Description

technical field [0001] The invention relates to the field of projectors, in particular to a projector with an expandable laser light source. Background technique [0002] Currently, there are two main types of laser projector technology. [0003] One directly uses RGB three-color pure laser as the light source, and is connected to the optical engine through an optical fiber. In the industry, the red, green and blue lasers are usually made into separate modules. Each module only emits one kind of light, which leads to a large module to achieve high brightness. Once the design of each color module is completed, Subsequent entities cannot be changed without redesign, resulting in greatly affected flexibility and scalability. [0004] The other is the phosphor laser light source, currently limited by the characteristics of the phosphor material, the brightness of a single laser light source cannot be very high, usually lower than 7000 lumens, and limited by the circuit control...

AI Technical Summary

Problems solved by technology

In the industry, the red, green and blue lasers are usually made into separate modules. Each module only emits one kind of light, which leads to a large module to achieve high brightness. Once the design of each color module is completed, Subsequent entities cannot be changed unless redesigned, resulting in greatly affected flexibility and scalability

[0004] The other is the phosphor laser light source, currently limited by the characteristics of the phosphor material, the brightness of a single laser light source cannot be very high, usually lower than 7000 lumens, and limited by the circuit control of the DLP system, the phosphor laser light source module It can only support up to 2, and the brightness is also due to the loss of the optical system. Generally, the brightness can only be increased by 1.4 times, and the brightness increase is limited.

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