Optical machine

Abstract

An optical machine is disclosed in the invention, and comprises a light source optical path lens set which provides incident light for a light modulation system, the light modulation system performs light processing on a light source and then emits the light through a projection optical path lens set to project the light to a projection plane, a light source optical path lens set module, a light modulation system module and a projection optical path lens set module are horizontally arranged, the light source optical path lens set module is provided with an integrally formed top wall, the top wall is made of a non-metal material, and a wiring terminal of the light source is arranged on the top wall; the light source optical path lens set module is provided with a first opening facing the negative direction of the Z axis; the light modulation system module is provided with a second opening facing the positive direction of the Z axis; the projection of the first opening on the XOY plane is not overlapped with the projection of the second opening on the XOY plane; and the optical machine further comprises an upper cover plate, and the upper cover plate is made of a metal material. Therefore, the probability of short circuit of the light source optical path lens group module is reduced; and meanwhile, the upper cover plate is made of a metal material, so that the light modulation system module can be cooled.

Description

technical field [0001] The invention relates to the technical field of DLP projection, in particular to an optical machine. Background technique [0002] Micro-projection technology is a new type of modern projection display technology. It gradually penetrates into people's daily life by realizing the miniaturization and portability of equipment, and has gradually become an important development trend of projection display. The digital light processing (Digital Light Processing, DLP) projection display method has the characteristics of high brightness, high contrast, and high resolution. It is combined with a new LED light source to realize a miniaturized portable micro-projection, which meets people's desire for portable and free projection display. demand. [0003] The projection imaging quality of a DLP projector is closely related to the optical path and the fixing method of optical components. DLP projectors often use three-color (R, G, B) diodes (LEDs) as light sourc...

AI Technical Summary

Problems solved by technology

It can be seen that DLP projectors are optical precision equipment. When an error occurs in a certain part of the optical path, the subsequent optical path propagation deviation will be amplified, or the light source utilization rate will be reduced, which directly affects the energy utilization rate of the entire projection system. Uniformity, projection quality, etc.

[0004] In order to pursue the miniaturization of DLP projectors, the size of DLP optical machines is getting smaller and smaller. However, due to the compact and rigorous structure of optical machines, the process of reducing the size will lead to poor heat dissipation and even short circuits. That is to say, the reliability of the optical machine is reduced, which will lead to the reduction of the service life of the optical machine.

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