Lens fixing module and projection device
A technology for fixing molds and lenses, applied to projection devices, installations, instruments, etc., can solve problems such as high manufacturing costs, loose lens installation, and large number of components, so as to improve reliability, facilitate and speedy replacement process, and reduce manufacturing costs. cost effect
Inactive Publication Date: 2019-04-26
QISDA OPTRONICS (SUZHOU) CO LTD +1
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0005] In order to solve the problems of large number of components, high manufacturing cost, and unstable lens installation, the present invention proposes a lens fixing module, which is more convenient to install and remove the lens and has higher reliability of lens fixing
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[0027] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the invention. Moreover, in order to avoid obscuring the invention, the detailed explanation is omitted about the well-known part.
[0028] A lens fixing module provided in an embodiment of the present invention, the lens fixing module includes a fixing frame and a fixing base, the first limiting part directly formed on the fixing frame cooperates with the second limiting part provided on the fixing base, The lens is fixed in three dimensions, which prevents the lens from rotating and falling off in the axial direction, improves the reliability of lens fixing, facilitates manufacturing and assembly, reduces manufacturing costs,...
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The invention provides a lens fixing module and a projection device. The lens fixing module is used to fix the lens with a lens flange on the outside. The lens fixing module includes: a fixing frame, which is provided with a first groove corresponding to the lens flange, and the fixing frame is adjacent to the first groove along the first direction. There is a first limiting part; the fixed base is provided with a second groove communicating with the first groove and a second limiting part located in the second groove, and the width of the second groove is larger than that of the first groove. The width of the groove; wherein, the lens flange enters the second groove from the first groove and then rotates in the first direction until the lens flange is fixed in the second groove. At this time, the first limiting part abuts the lens convex edge to prevent its loose displacement along the optical axis direction, and the second limit part abuts against the lens flange to prevent its rotational displacement along the circumferential direction. The lens fixing module provided by the invention can fix the lens, prevent rotation and axial falling off, improve the reliability of fixing the lens, and reduce the manufacturing cost.
Description
technical field [0001] The invention relates to a lens fixing module and a projection device. Background technique [0002] The projector needs to pass through the lens to project the image on the screen. In order to get a clear image, it is usually necessary to adjust the focal length and magnification of the lens, and the focal length and magnification of each lens are within a certain range. When the environment changes , beyond the adjustment range of focal length and magnification, there is the possibility of changing the lens. The use environment mainly refers to the distance from the projector lens to the screen. In fact, projectors are generally equipped with standard lenses, but the space used may be long or narrow, and it is difficult to obtain satisfactory results with standard lenses. If you want to get a large image at a short distance, you need a short-focus lens, and if you want to get a clear image at a long distance, you need a telephoto lens. [0003] As...
Claims
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IPC IPC(8): G02B7/02G03B21/14
CPCG02B7/021G03B21/14
Inventor 庄定颖萧启宏陈柏舟何文中林颖芳
Owner QISDA OPTRONICS (SUZHOU) CO LTD