Optical modules and projectors
An optical module and projector technology, applied in optics, instruments, projection devices, etc., can solve problems such as the frequency of reciprocating deflection not meeting expectations, reducing the rigidity of the shaft structure, and going against the trend of miniaturization design.
Active Publication Date: 2022-03-08
CORETRONIC
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Problems solved by technology
[0004] However, with the miniaturization design trend of the projector and its optical module, the size of the swing structure and its shaft must be correspondingly miniaturized, which increases the structural rigidity of the shaft due to the shortened length. Unexpected frequencies causing reciprocating deflection of rotating structures
If the length of the shaft is increased to reduce the structural rigidity of the shaft in order to solve the above problems, it will go against the miniaturization design trend
In addition, if the outer diameter of the shaft portion is reduced to reduce the structural rigidity of the shaft portion in order to solve the above problems, it will increase the difficulty in manufacturing
Furthermore, since the miniaturized rotating structure cannot provide enough space for locking and assembling, it needs to be an integrally formed structure, and because the overall swing structure needs to have sufficient structural strength, it is difficult to choose a low-strength one to solve the above problems. material to reduce the structural rigidity of the shaft
Therefore, how to avoid the frequency of the reciprocating deflection due to the excessive structural rigidity of the shaft part from not meeting expectations while taking into account the miniaturization design of the optical module, the feasibility of manufacturing, and the overall structural strength is an important issue in the design of the above-mentioned optical module. issue
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[0018] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referring to the directions of the drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.
[0019] figure 1 is a schematic diagram of a projector according to an embodiment of the present invention. Please refer to figure 1 , the projector 50 of this embodiment includes a light source 52 , a light valve 54 and a projection lens 56 . The light source 52 is used to provide the illumination beam L1, the light valve 54 is located on the transmission path of the illumination beam L1 and is used for converting the illumination beam L1 into an image beam L2, and the projection lens ...
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An optical module includes a base, at least one shaft, at least one frame and optical elements. The shaft is curved. The frame body is connected to the base body through the shaft portion, and is used for swinging relative to the base body with the shaft portion as a rotation axis. At least one of the base body and the frame body has at least one connecting surface parallel to the rotating shaft, and the shaft part is connected to the connecting surface. The optical element is arranged in the frame. In addition, a projector with the above optical module is also mentioned. The optical module and the projector using the optical module of the present invention can effectively reduce the size of the optical module.
Description
technical field [0001] The present invention relates to a display device and an optical module, and particularly relates to a projector and an optical module thereof. Background technique [0002] A projector is a display device used to produce large-scale images. The imaging principle of the projector is to convert the illumination beam generated by the light source into an image beam through the light valve, and then project the image beam onto the screen or the wall through the projection lens. [0003] In the current projector products, the resolution of the image screen projected by the projector has gradually failed to meet the market demand. In order to further increase the resolution of the video image, a high-resolution light valve can be used in the projector, but this will lead to the problem of high cost of the projector. In addition, in some projectors, an optical module with optical swing technology can be additionally configured. The swing structure includes...
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IPC IPC(8): G03B21/14G03B21/20
CPCG03B21/142G03B21/145G03B21/20
Inventor 陈韦豪林淑瑜左佳卿
Owner CORETRONIC