DMD module, DLP machine and DLP projection device

Abstract

The invention relates to the field of optical and projection technology, and more particularly to a DMD module, a DLP machine and a DLP projection device. The DMD module includes a DMD chip, a main housing, a driving plate, a fixing member, a radiator and a connecting member. The radiator includes a radiating block. Through holes are disposed in the fixing member and the driving plate. The DMD chip is fixedly mounted on the main housing, the connecting member is connected to the main housing through the radiator, the fixing member and the driving plate in sequence, and the radiating block is in contact with the back surface of the DMD chip through the through holes in the fixing member and the driving plate. A spring piece is disposed between a stopper portion of the connecting member and the radiator, a spring is disposed between the stopper portion of the connecting member and the fixing member, and the spring passes through the radiator. Therefore, the invention can radiate the heat generated by the DMD chip in time, and ensure the contact accuracy and stability between the DMD chip and the driving plate, thereby improving the quality of a final output image.

Description

[0001] 【Technical field】 [0002] The invention relates to the field of optics and projection technology, in particular to a DMD component, a DLP optical machine and a DLP projection device. [0003] 【Background technique】 [0004] DLP (Digtal Light Processing, digital light processing) projectors have the characteristics of high native contrast, miniaturization of the machine, and closed optical path, making them more and more popular among users. Among them, DLP projectors use DMD ( Digtal Micromirror Device (digital micromirror device) chip is used as an imaging device, a projection technology that realizes projected images by adjusting reflected light. The DMD chip is the core component of the optical-mechanical assembly. In the optical-mechanical assembly, the light beam emitted by the laser passes through a series of optical lenses and finally reaches the DMD chip. The DMD chip processes the optical signal and finally forms an image. [0005] At present, the connection m...

AI Technical Summary

Problems solved by technology

Please see attached figure 1 In the prior art, the heat sink is directly locked with the driver board and the DMD chip by hard connection through screws. However, since the heat sink is generally large in size and heavy, when it is assembled with the driver board and the DMD chip It is easy to cause uneven fixed force or the relative position displacement between the components after being interfered by other structural parts such as the housing, which will lead to poor contact between the DMD chip and the driver board, making the image formed by the final output of the optical system appear. picture quality problem

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