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Focusing mechanism

A technology of a drive mechanism and a parallel four-bar mechanism, applied in the field of space remote sensing, can solve problems such as spontaneous vibration, camera shooting accuracy and focus adjustment interference.

Active Publication Date: 2021-01-15
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The purpose of the present invention is to provide a focusing mechanism based on a flexible hinge connection, aiming at solving the technical problem that the camera shooting accuracy and focus adjustment are disturbed when the remote sensing camera is in high-altitude flight due to spontaneous vibration, resonance, and overload

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Embodiment Construction

[0015] 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 embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0016] The following is attached Figure 1-5 The concrete realization of the present invention is described in detail with specific embodiment:

[0017] as attached figure 1 , 2 , 5, a focusing mechanism of the present invention includes a flexible parallel four-bar mechanism for installing the focal plane assembly of the remote sensing camera 10 and a driving mechanism that makes the flexible parallel four-bar mechanism reciprocate; the flexible parallel four-bar mechanism includes : upper frame 1, drive link 2, support link 3, flexible hinge 4 and fixed end 5; upper frame 1 includes a vertical...

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Abstract

The present invention is applicable to the technical field of space remote sensing, and provides a focusing mechanism. By using flexible hinges at both ends of the supporting connecting rod in the flexible parallel four-bar mechanism to connect the transmission base and the fixed end respectively, the entire flexible parallel four-bar mechanism has elastic deformation Ability, when the focal plane assembly is set on the four-bar mechanism, the elastic deformation of the four-bar mechanism can not only adjust the position of the focal plane, but also does not have the gap and mechanical friction caused by the moving parts of the general transmission mechanism, effectively preventing the remote sensing camera from flying at high altitude. The environment is due to the loss of precision of the focusing mechanism due to slide rails, cam gaps, etc., and the occurrence of cold welding of moving parts at high altitude or in a vacuum environment.

Description

technical field [0001] The invention belongs to the technical field of space remote sensing, is mainly applied to the adjustment of the focal plane of a space optical remote sensing camera, and particularly relates to a focusing mechanism. Background technique [0002] Space optical remote sensing cameras have important scientific and military significance in the fields of high-altitude ground observation and space exploration. Because the remote sensing camera will be affected by shock, vibration, overload, etc. during the transportation process, the focal plane of the camera will be deviated to different degrees due to changes in environmental conditions (such as pressure, temperature, microgravity, etc.) or changes in the imaging object distance during orbit operation. In order to ensure the imaging quality of the remote sensing camera at high altitude or even in a vacuum environment, it is necessary to design a set of focusing mechanism for the remote sensing camera that...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B7/00
CPCG02B7/00
Inventor 郭疆邵明东齐洪宇李宪斌周龙加
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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