Light path structure and method for inclined projection picture and offset projection picture

Abstract

The invention discloses a light path structure and method for an inclined projection picture and an offset projection picture, and the method comprises the steps: changing a refraction angle path of a light source through the refraction of the light source at a projection front end, and adjusting a standard lens base through a mode of projecting an intermediate image, so as to change the positions of a symmetry axis of a standard lens and an optical axis of an imaging surface; therefore, the effects of inclination and offset of different projection images are achieved, different projection image inclination angles and different proportions of offset are achieved, and the imaging effect of light source projection adjustment is achieved. The projection light machine solves the problems that a traditional projection light machine needs to incline or bias a display chip to achieve the purpose of image inclination or bias, a main body part of an illumination light path of the projection light machine needs to be inclined or modified, and after the inclination angle and the bias angle of the display chip brought by a light machine main body are determined, the main body of the light machine needs to be modified for the modification of the inclination angle and the bias angle; and the projection light machine has the advantage of convenient adjustment of the inclination and bias.

Description

technical field [0001] The invention relates to the technical field of projectors, in particular to an optical path structure and method for oblique projection pictures and offset projection pictures. Background technique [0002] In order to achieve flexible projection screen display in 3D scanning, it is often necessary to offset or tilt the projection screen. In traditional projection light machines, to achieve this purpose, the display chip needs to be tilted or offset to achieve screen tilt or offset. The purpose of this structure is to tilt or modify the main part of the illumination light path of the projection light machine. Once the tilt angle and offset angle of the display chip brought by the light machine body are determined, modify the tilt angle or offset angle It is necessary to modify the main body of the optical engine. This modification will be a large project and cannot be easily realized. To solve this problem, we introduce a new optical path structure. ...

AI Technical Summary

Problems solved by technology

[0002] In order to achieve flexible projection screen display in 3D scanning, it is often necessary to offset or tilt the projection screen. In traditional projection light machines, to achieve this purpose, the display chip needs to be tilted or offset to achieve screen tilt or offset. The purpose of this structure is to tilt or modify the main part of the illumination light path of the projection light machine. Once the tilt angle and offset angle of the display chip brought by the light machine body are determined, modify the tilt angle or offset angle It is necessary to modify the main body of the optical engine. This modification will be a large project and cannot be easily realized. To solve this problem, we introduce a new optical path structure. place

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