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Long-wavelength infrared continuous zoom lens

A zoom lens, long-wave infrared technology, applied in the field of infrared optics, can solve the problem of inability to apply 640 × 512 yuan, etc., achieve good imaging effect, improve image quality, and improve the effect of detection range

Active Publication Date: 2015-05-06
11TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above zoom lenses are all based on uncooled detectors with a size of 320×256 and a pixel size of 30um×30um, and cannot be applied to a cooled detector with a size of 640×512 and a pixel size of 25um×25um. Require

Method used

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  • Long-wavelength infrared continuous zoom lens

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and do not limit the present invention.

[0027] figure 1 , figure 2 , image 3 They are schematic diagrams of the zoom lens in the embodiments of the present invention at the telephoto, the medium telephoto, and the short telephoto positions. Figure 1~3 Among them, 200 indicates the object side end, and 190 indicates the image side end. Such as figure 1 As shown, the zoom lens 100 of this embodiment includes: a first lens group 110 with positive refractive power, a second lens group 120 with negative refractive power, and a third lens group 130 with positive refractive power, which are sequentially arranged from the object side to the imaging side. , The fourth lens group 140 with negative refractive power, the first reflector 150 for refrac...

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Abstract

The invention discloses a long-wavelength infrared continuous zoom lens. The long-wavelength infrared continuous zoom lens comprises a first lens group with positive diopter, a second lens group with negative diopter, a third lens group with positive diopter, a fourth lens group with negative diopter, a first reflecting mirror used for deflecting a light path, a fifth lens group with positive diopter, a second reflecting mirror used for deflecting the light path and a sixth lens group with positive diopter, which are sequentially arranged from an object space to an image space. The long-wavelength infrared continuous zoom lens disclosed by the invention can reduce the cost and volume on the basis of improving the probing action range and improving the image quality as far as possible and can achieve a good imaging effect.

Description

Technical field [0001] The invention relates to the technical field of infrared optics, in particular to a long-wave infrared continuous zoom lens. Background technique [0002] In recent years, the application breadth and depth of infrared imaging technology has made great progress. Long-wave refrigerated detectors have significantly higher sensitivity than uncooled long-wave detectors. Therefore, they are used in target search, early warning detection, intelligence reconnaissance and other fields. Broad application prospects. In many special occasions, infrared dual-field or even three-field lenses no longer have application requirements. [0003] The long-wave infrared continuous zoom lens in the prior art is mainly suitable for a 320×256 element small area array detector. For example, the existing 5x magnification long-wave continuous zoom lens realized with 10 lenses has a focal length of 53mm-265mm; a 4x continuous zoom lens realized with 9 lenses has a focal length of 50mm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B15/173G02B15/20G02B3/02G01J5/08
Inventor 骆守俊范翔高山
Owner 11TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP