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An optical compensation type long-wave infrared continuous zoom optical system

A long-wave infrared, optical compensation technology, applied in optics, optical components, instruments, etc., can solve problems such as image blur, achieve the effect of clear and stable imaging, large zoom ratio, and low control accuracy

Active Publication Date: 2018-01-26
凯迈(洛阳)测控有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to provide an optical compensation type long-wave infrared continuous zoom optical system, which is used to solve the problem that the mechanical compensation optical system tends to blur some images during the zoom process

Method used

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  • An optical compensation type long-wave infrared continuous zoom optical system
  • An optical compensation type long-wave infrared continuous zoom optical system
  • An optical compensation type long-wave infrared continuous zoom optical system

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] The optical compensation type long-wave infrared continuous zoom optical system provided by the present invention includes a front fixed mirror group, a front moving mirror group, a middle fixed mirror group, a rear moving mirror group and a rear fixed mirror group which are sequentially arranged from the object side to the image side. The positions of the front fixed mirror group, the middle fixed mirror group and the rear fixed mirror group are constant, and the distance between the front movable mirror group and the rear movable mirror group is also kept constant. In the process of zooming, the front and rear moving lens groups perform forward and backward linkage on the optical axis at equal intervals, at the same speed, and in the same direction.

[0030] Both the front moving lens group and the rear moving lens group are composed of two lenses, w...

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Abstract

The invention relates to an optical compensation type long-wave infrared continuous zoom optical system, which comprises a front fixed mirror group, a front moving mirror group, a middle fixed mirror group, a rear moving mirror group and a rear fixed mirror group arranged sequentially from the object side to the image side, The front moving mirror group is composed of the first moving lens and the second moving lens arranged in sequence, and the rear moving mirror group is composed of the third moving lens and the fourth moving lens arranged in sequence, and the front moving mirror group and the rear moving mirror group are on the optical axis Do front and rear linkage with equal distance, equal speed, and same direction to realize optical compensation continuous zoom. The optical compensation system has a simple structure and is easy to manufacture, and has low requirements on the precision of the control system. To overcome the disadvantage that the mechanical compensation system requires a complex cam structure or the precise cooperation of the double screw to ensure that the image remains clear during the zooming process.

Description

technical field [0001] The invention relates to an optical compensation type long-wave infrared continuous zoom optical system. Background technique [0002] Infrared imaging system has the advantages of all-weather work and no need for auxiliary lighting, and has been widely used in military fields such as warning, reconnaissance and guidance. For military equipment, the main targets on the ground are usually ground bunkers, factories, dams, tanks, armored vehicles, cars and soldiers. The surface temperature of these targets is generally not high, the radiation energy is small, and the peak value of thermal radiation is concentrated in the long-wave infrared band. In addition, in the process of atmospheric transmission, infrared rays are easily absorbed by substances, but for mist, long-wave infrared is easier to pass through. In this way, compared with medium-wave (3 μm ~ 5 μm) infrared, the long-wave infrared imaging system can be used at lower temperatures. Perform the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B15/15G02B1/00G03B17/17
CPCG02B15/15G03B17/17G02B1/00
Inventor 吉书鹏吴海清赵新亮李萍田海霞崔莉李同海
Owner 凯迈(洛阳)测控有限公司
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