Projector

Abstract

A projection device is prepared as setting fixture component of optical machine on optical machine and arranging an internal regulation screw hole on Z axle direction of said fixture component as wellas setting a regulation frame on regulation unit and arranging an external regulation screw hole on Z axle direction of regulation frame then using regulation screw to connect said internal and external regulation screw holes for making optical machine have regulation mechanism.

Description

【Technical field】 [0001] The present invention relates to a projection device, in particular to a projection device that can adjust the optical mechanism in the projection device to improve the focal length error and improve the projection quality. 【Background technique】 [0002] Such as figure 1 As shown, the image projection function of the conventional projection device 90 mainly comes from an internal optical machine 91 , which is fixed on a base 92 and then projects the image on a mirror or screen 93 . The optical machine 91 is a precision component, and has a certain focal length design value, but because the optical machine 91 itself is manufactured and assembled, often due to factors such as mechanism tolerance, assembly tolerance, optical tolerance or transportation process, the optical machine 91 The Z-axis position (the projection direction of the projection lens of the optical machine 91) produces a displacement change (that is, not on the design value), which i...

AI Technical Summary

Problems solved by technology

The optical machine 91 is a precision component, and has a certain focal length design value, but because the optical machine 91 itself is manufactured and assembled, often due to factors such as mechanism tolerance, assembly tolerance, optical tolerance or transportation process, the optical machine 91 The Z-axis position (the projection direction of the projection lens of the optical machine 91) produces a displacement change (that is, it is not on the design value), and then causes the focal length to be incorrect and the image to be unclear.

And although the projection device will have other adjustment mechanisms to adjust the focal length or projection position after the optical machine is assembled, in the prior art, because the optical machine 91 itself is fixed on the base 92 and cannot be adjusted, resulting in The Z-axis projection focal length of the optical machine cannot be adjusted, so that the correct design value of the focal length of the optical machine itself cannot be implemented, which seriously affects the imaging quality of the projection equipment. Therefore, how to improve the design so that the optical machine itself has an adjustment function to ensure It has the precise quality foundation of the correct focal length design value when the projection equipment is assembled, and it is a key direction for the industry to make further efforts in research and development.

[0003] In view of the disadvantages of the above-mentioned projection device that its optical mechanism itself does not have an adjustment function and the fact that its structural design is not ideal, the inventor of this case started to develop and conceive its solution, hoping to develop a more adjustable and convenient operation. Optical and mechanical adjustment structure, in order to serve the public and promote the development of this industry, then after a long time of conception, the present invention came into being

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