Mirror support structure, mirror assembly and optical remote sensing camera
A technology of mirror support and optical remote sensing, which is applied in the field of aerial optical remote sensing cameras and optical remote sensing cameras, can solve the problems of high machining precision of mechanical parts, difficulty in controlling screw tightening torque, small temperature change range, etc., and achieve high-precision positioning and Torque-free connection, wide temperature change adaptability, and the effect of improving structural support rigidity
Active Publication Date: 2019-04-02
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
[0004] 1) The processing precision of mechanical parts is high and the assembly process is complicated;
[0005] 2) The temperature adaptability and support stiffness put forward opposite requirements on the stiffness of the flexible parts. The contradiction between temperature adaptability and support stiffness needs to be weighed comprehensively during design, so that this support method can only adapt to a small range of temperature changes
[0007] The optical surface of the mirror is sensitive to the change of screw tightening torque. When the mirror assembly is tightly connected with the camera body, the tightening torque of each screw is difficult to control
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[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.
[0037] Under the action of a uniform temperature load, the total amount of thermal deformation of the optical surface of the mirror is the superposition of the free thermal deformation component (expansion / contraction) and the bending elastic deformation component caused by the temperature-induced mechanical load. Free thermal deformation makes the radius of curvature of the optical surface of the mirror shrink or enlarge proportionally, and temperature-induced mechanical loads cause elastic bending deformation of the optical surface of the mirror. Because the influence of free thermal...
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The invention discloses a mirror supporting structure, a mirror assembly and an optical remote sensing camera. The mirror supporting structure of the present invention includes a base, a flexible arm, a positioning surface and an external interface. The flexible arms are multiple and evenly arranged on the base in an axisymmetric manner. The positioning surface is arranged on the base. The external interface is arranged on the base. The invention also discloses a mirror assembly including the mirror support structure and an optical remote sensing camera.
Description
technical field [0001] The invention relates to the field of aerial optical remote sensing cameras, in particular to a mirror supporting structure, a mirror assembly and an optical remote sensing camera. Background technique [0002] In the aviation working environment, the thermal environment of the optical remote sensing camera will change greatly with factors such as seasons, working locations, flight altitudes, and weather conditions. Ambient temperature fluctuations will deteriorate the optical surface shape of the camera's optical components, resulting in a decrease in system performance. In order to ensure the working performance of the system, the aeronautical optical remote sensing camera generally adopts active thermal control measures. The mirror is one of the core optical components of the aerial optical remote sensing camera, and its temperature adaptability has an important impact on the working performance and thermal control cost of the camera. The temperat...
Claims
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IPC IPC(8): G02B7/182G02B7/18G03B17/12
CPCG02B7/181G02B7/182G03B17/12
Inventor 李海星张继超史磊丁亚林张洪文刘波蒋宁王乃祥管坐辇
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI