Carbon fiber composite mirror tube for co-axial three-mirror reflective optical system camera
An optical system and composite material technology, which is applied in the field of the connection structure of the primary and secondary mirrors of cameras, can solve problems such as the inability to guarantee the transfer function of the optical system, and achieve the effect of reasonable lay-up design, guaranteed performance requirements, and guaranteed accuracy requirements.
Inactive Publication Date: 2009-12-23
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology
[0005] The purpose of the present invention is to provide a carbon fiber composite lens barrel for a coaxial three-mirror optical system camera, which solves the technical problem that the existing primary and secondary mirror connection structures cannot guarantee the transfer function of the optical system
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[0015] For the visible light coaxial three-mirror system, the design of the lens barrel is biased towards a higher first-order frequency design (greater than 200Hz), so the design adopts a barrel structure of carbon fiber composite material.
[0016] In the camera structure of the coaxial three-mirror optical system, the secondary mirror system 1 is installed on the left end of the lens barrel 2 , the primary mirror system 4 is installed on the right end of the lens barrel 2 , and the fixed fulcrum 3 is arranged on the lens barrel 2 . The schematic diagram of the installation structure of the primary and secondary mirror components is as follows: figure 1 .
[0017] The carbon fiber composite lens barrel is a laminate made of single-layer plates laid at different angles. The thickness of the single-layer plate is very thin, and the thickness after curing is 0.125mm, showing the characteristics of in-plane orthotropy. The design of the carbon fiber composite lens barrel is to ...
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Abstract
The invention relates to a carbon fiber composite mirror tube for a co-axial three-mirror reflective optical system camera. A secondary mirror system is loaded at one end of the mirror tube, and a main mirror system is loaded at the other end of the mirror tube. The mirror tube is formed by laying laminated sheets, and the laminated sheets are formed by laying carbon fiber composite single panels according to the total number of laying layers, laying corners and laying sequence, wherein the number of the laying layers is 22 or 24 or 26. The invention solves the technical problem that the prior connecting structure of a main mirror and a secondary mirror can not guarantee the transfer function of an optical system. The invention adopts the high-modulus mirror tube made of M40J / 648 carbon fiber composite single panels and has the advantages that the laying design is reasonable; the technology is relatively simple; the precision requirement of the main mirror and the secondary mirror is guaranteed; and the property requirement of the high-resolution optical system is guaranteed.
Description
technical field [0001] The invention relates to a connecting structure of primary and secondary mirrors of a camera. Background technique [0002] In the coaxial three-mirror system with a long focal length of visible light, the camera resolution index reaches the level of meters and submeters, and the magnification of the primary and secondary mirrors is often tens of times, so that small errors between the primary and secondary mirrors may be magnified Exceeding the precision requirements after system assembly will affect the MTF (transfer function) of the entire system, which puts forward very high requirements for the design of the connection structure of the camera's primary and secondary mirrors. [0003] The magnification ratio of the primary and secondary mirrors of the coaxial three-mirror optical system camera is 40 times. Mirror attachments place high demands. [0004] Primary and secondary mirrors are most sensitive to assembly tilt tolerance requirements. In ...
Claims
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IPC IPC(8): G02B7/02B32B5/12
Inventor 解永杰张禹康李英才陈荣利胡永明吴萌源
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI