Optical machine and projector

Abstract

The invention provides an optical machine and a projector. The optical machine comprises an optical machine shell, wherein the optical machine shell comprises a top wall, a bottom wall and a side wall, a first positioning surface and a second positioning surface are arranged on the side wall, positioning structures are arranged at the two angular positions of the prism, each positioning structure comprises two positioning grooves which are arranged at intervals in the first direction, an elastic column is arranged in each positioning groove, each positioning groove comprises a loading opening for loading the elastic column and a lateral opening for lateral exposure, the loading opening of each positioning groove close to the top wall faces the top wall, and the loading opening of each positioning groove close to the bottom wall faces the bottom wall; the elastic column at the first corner position is pressed on the first corner, and the elastic column at the second corner position is pressed on the second corner, so that the second side face is pressed on the first positioning face, and the third side face is pressed on the second positioning face. Therefore, reliable pressing of the prism by the elastic columns can be guaranteed, smooth installation of the elastic columns can further be guaranteed, and the elastic columns are prevented from skewing and deforming in the positioning grooves to influence the pressing effect on the prism.

Description

technical field [0001] The invention relates to the technical field of DLP projection, in particular to an optical machine and a projector. Background technique [0002] The prism of the existing optical machine is usually set in two pieces. The two prisms are first bonded together, and then pressed against the inner wall of the optical machine housing through elastic parts. Due to the influence of space and structural layout, it is usually necessary to connect the elastic part and the inner wall of the optical machine. An adapter is added between the prisms to transmit the elastic force, the structure is complicated and it is easy to cause the position of the prisms to change. There are also some prisms that use an elastic metal sheet to press one side of the prism. The contact area is large and it is difficult to achieve accurate positioning. The elastic arm is not compact enough and it is difficult to realize a reasonable structural arrangement. Contents of the inventi...

AI Technical Summary

Problems solved by technology

[0002]The prism of the existing optical machine is usually set in two pieces, the two prisms are first glued together, and then pressed against the inner wall of the optical machine housing by elastic parts, Affected by the space and structural layout, it is usually necessary to add an adapter between the elastic member and the prism to transmit the elastic force, the structure is complex and it is easy to cause the position of the prism to change

There are also some prisms that use an elastic metal sheet to press one side of the prism. The contact area is large and it is difficult to achieve accurate positioning. Elastic arm, the structure is not compact enough and it is difficult to achieve a reasonable structural arrangement

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