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Miniaturized infrared continuous zoom optical system with magnification lenses

An optical system and infrared technology, applied in the optical field, can solve the problems of many lenses, low resolution, long optical path size, etc., and achieve the effect of easy to change the focal length, excellent imaging quality, and good image quality maintenance

Inactive Publication Date: 2018-04-13
LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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  • Description
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Problems solved by technology

[0003] The usual infrared continuous zoom lens has a low resolution (320×240), uses double-group linkage or double-lens as a zoom mirror or compensation mirror, and has a long optical path. In order to shorten the size, a reflector is used to bend the optical path, which has high complexity and tolerance. Sensitive, with many lenses, it is difficult to meet the actual use requirements of high zoom ratio, small size and high reliability

Method used

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  • Miniaturized infrared continuous zoom optical system with magnification lenses
  • Miniaturized infrared continuous zoom optical system with magnification lenses
  • Miniaturized infrared continuous zoom optical system with magnification lenses

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Embodiment Construction

[0037] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0038] Embodiment of the present invention: according to the direction of the optical path, it includes the first magnification mirror 1, the second magnification mirror 2, the third magnification mirror 3, the first objective lens 4, the second objective lens 5, the variable power mirror 6, the compensation mirror 7, the first rear mirror Fixed mirror 8, second rear fixed mirror 9, third rear fixed mirror 10, first focusing mirror 11, focusing field of view diaphragm 12; behind the focusing field of view diaphragm 12 are the optical lenses of the detector; the external scene The radiation passes through the first magnification mirror 1, the second magnification mirror 2, the third magnification mirror 3, the first objective lens 4, the second objective lens 5, the variable magnification mirror 6, the compensation mirror 7, the first rear fixed mirror 8, and the s...

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Abstract

The invention relates to a miniaturized infrared continuous zoom optical system with magnification lenses, which comprises magnification lenses, a front fixing group, a zoom group, a compensation group, a rear fixing group and a focusing lens group. A single lens zoom group and a single lens compensation group are adopted for linkage, and a large zoom ratio is realized; through adopting an aspheric surface and a diffraction surface, advanced aberration, aberration between a point on the axis and a point out of the axis, aberration between a thin beam and a wide beam and various aberration arereduced; the axial space is compressed, and a satisfactory image quality is acquired in a full-view field, full-aperture and full-zoom range; and after the magnification lenses are removed, continuouszoom can be realized.

Description

technical field [0001] The invention belongs to the field of optical technology, and relates to a miniaturized infrared continuous zoom optical system with a magnification mirror. Background technique [0002] The infrared continuous zoom thermal imager is an imaging system whose focal length can be changed continuously, while the position of the image plane remains stable and the image quality remains good during the zooming process. In order to obtain images of different sizes on the image plane of a fixed-focus infrared camera, the distance between the target object and the lens must be changed or a lens with a different focal length must be replaced. The infrared continuous zoom thermal imager can continuously change the focal length of the system. Therefore, it can obtain target images of continuously changing sizes on the image plane, which is very beneficial for photoelectric detection, reconnaissance, and tracking. [0003] The usual infrared continuous zoom lens ha...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B15/163G02B27/00
CPCG02B15/163G02B27/0025
Inventor 赵菲菲张良白红涛梁瑞冰潘晓东
Owner LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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