A flexible and high-precision secondary mirror assembly focusing mechanism

A high-precision, flexible technology, applied in the field of optics, can solve the problems of complex processing and assembly of the focusing mechanism, easy jamming during the focusing process, and poor focusing accuracy, so as to achieve high movement reliability, avoid interference and pollution, Eliminates friction and sticking effects

Active Publication Date: 2020-06-26
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a flexible and high-precision secondary mirror assembly focusing mechanism, which solves the problems of complex structure, poor focusing accuracy, easy stagnation in the focusing process, and complicated processing and assembly of the focusing mechanism in the traditional focusing method

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  • A flexible and high-precision secondary mirror assembly focusing mechanism
  • A flexible and high-precision secondary mirror assembly focusing mechanism
  • A flexible and high-precision secondary mirror assembly focusing mechanism

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Embodiment Construction

[0052]In order to make the purpose, advantages and features of the present invention more clear, a flexible and high-precision secondary mirror assembly focusing mechanism proposed by the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that: the drawings are all in a very simplified form and use inaccurate proportions, which are only used to facilitate and clearly illustrate the purpose of the embodiments of the present invention; secondly, the structures shown in the drawings are often actual structures part; again, each drawing needs to display different emphasis points, and sometimes adopts different scales.

[0053] Structure and composition

[0054] A flexible high-precision secondary mirror assembly focusing mechanism, mainly including a chassis 1, a fixed ring 2,...

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Abstract

The invention discloses a flexible and high-precision secondary mirror assembly focusing mechanism, which solves the problems of complex structure, poor focusing precision, easy stagnation in the focusing process, and complicated processing and assembly of the focusing mechanism in the traditional focusing method. The focusing mechanism includes: a base frame, a fixed ring, a flexible support guide mechanism, a detected ring plate, a piezoelectric ceramic actuator, a flexible amplification mechanism and a measurement feedback sensor; the base frame, a fixed ring, a detected ring plate, a flexible The supporting and guiding mechanisms are installed in sequence, and the focused secondary mirror assembly is installed on the flexible supporting and guiding mechanism. There are multiple piezoelectric ceramic actuators and flexible amplifying mechanisms, and they cooperate one by one to form multiple driving mechanisms for providing the focusing amount; A plurality of driving mechanisms are installed between the base frame and the supporting guide mechanism, and the measurement feedback sensor is installed on the base frame and used to measure the displacement of the focusing secondary mirror assembly.

Description

technical field [0001] The invention belongs to the field of optical technology, and in particular relates to a focusing mechanism of a flexible and high-precision secondary mirror assembly. Background technique [0002] The focusing mechanism is an important component in the optomechanical system. Ground-based telescopes, theodolites and other optical instruments are affected by changes in the operating environment temperature and other factors, causing changes in the distance between optical elements along the optical axis, which will cause system aberrations; space cameras are also subjected to harsh mechanics such as vibration, shock, high and low temperature during the launch phase. The impact of the environment may cause the image quality to decline. In view of the above situation, adjusting the defocus amount through the focusing system is a key link and an important means to ensure the image quality of the system. [0003] An imaging optical system generally consis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B7/182
CPCG02B7/182
Inventor 吕涛乔永明王瑞阮萍汶德胜李创
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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