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Lens installing and positioning device in cold optical technology

A technology for installing and positioning lenses, which is applied in the low-temperature infrared field to achieve the effects of simple structure, guaranteed surface shape accuracy, and high lens positioning accuracy

Active Publication Date: 2017-05-31
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem of lens installation and fixation within a large temperature range (the temperature change is generally not lower than 200K), the present invention provides a lens installation and positioning device in cold optical technology to meet the technical requirements for lens installation within a large temperature range

Method used

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  • Lens installing and positioning device in cold optical technology

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Embodiment Construction

[0035] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0036] Such as figure 1 As shown, the installation and positioning device of a lens in a cold optical technology of the present invention is an axisymmetric structure, mainly including a main lens barrel 1, a lens 2, a tetrafluoroethylene pad 3, a fine tooth adjusting screw 4, and a mirror interval Circle 5, lens two 6, lens pressure ring 7, compression spring 8, compression screw 9, gland 10, fastening screw 11.

[0037] The inside of the main lens barrel 1 is used to place two lenses. The inner wall of the front end of the main lens barrel 1 is provided with a slope, the circumference of the front end of the main lens barrel 1 is provided with two through holes, and the inner wall of the main lens barrel 1 is provided with a stepped structure. The outer wall of the tube 1 is also provided with a stepped structure, and the rear end of the main lens tube 1 ...

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Abstract

The invention relates to a lens installing and positioning device in a cold optical technology, and relates to the field of low-temperature infrared. The lens installing and positioning device comprises a main lens cone, two lenses, a tetrafluoroethylene cushion, fine-thread adjusting screws, a mirror spacer ring, a lens pressing ring, pressure springs, pressing screws and a pressing cover. The first lens is positioned through cooperation of an oblique face at the front end of the main lens cone and an oblique face of the first lens, optical spacing between the first lens and the second lens is guaranteed through the mirror spacer ring, the mirror spacer ring is in oblique face fit with the two lenses, the second lens is pressed through the lens pressing ring, pressing force between the second lens and the lens pressing ring is realized through the pressure springs, connection between the pressing screws and the main lens cone is used for adjusting the pressing force, and the pressing cover plays a protective role. The lens installing and positioning device solves the problem of lens installing and fixing within a large temperature change range, can adapt to thermal deformation of the lenses and a supporting structure thereof within a large temperature change range, and guarantees that the lenses are not damaged irrecoverably while surface shape precision of lens surfaces is guaranteed.

Description

technical field [0001] The invention relates to the field of low-temperature infrared technology, in particular to a lens installation and positioning device in cold optical technology. Background technique [0002] With the continuous development of infrared technology, the application of infrared imaging terminals and other equipment on ground-based and space large-aperture telescopes is becoming more and more extensive. At the same time, people have higher and higher requirements for the performance of infrared detection instruments. When the target signal is very weak, the signal distance is relatively long, and the temperature is low, the thermal radiation and stray light of the optical system and its related supporting components in the infrared detection instrument will affect the detection performance. In order to reduce the impact of these aspects, refrigeration technology is generally used to reduce the temperature of the optical system and related supporting compo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/02
CPCG02B7/02G02B7/023G02B7/026
Inventor 刘祥意张景旭李宏壮范磊王文攀
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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