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An infrared lens for a dual-band navigation sensor

An infrared lens and sensor technology, applied in the field of infrared lens, can solve the problems of lens fragmentation, blurred image, unsuitable ordinary infrared lens, etc., and achieve the effect of compact structure and guaranteed stability

Active Publication Date: 2020-07-17
FUJIAN FORECAM OPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The image quality of the lens deteriorates, the position of the theoretical image plane and the focal plane of the detector do not coincide, etc., resulting in the image collected by the detector being blurred or even unable to see the image at all; more seriously, it may cause the lens to break
Therefore, traditional ordinary infrared lenses are not suitable for use in special application environments

Method used

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  • An infrared lens for a dual-band navigation sensor
  • An infrared lens for a dual-band navigation sensor
  • An infrared lens for a dual-band navigation sensor

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0014] Such as Figure 1~2 As shown, an infrared lens for a dual-band navigation sensor in this embodiment includes a positive lens A, a negative lens B, and a positive lens C arranged sequentially along the light incident direction; The air space between the negative lens B and the positive lens C is 17 mm.

[0015] As can be seen from the above, the beneficial effect of the present invention is that the optical path structure composed of the positive lens A, the negative lens B and the positive lens C of the present invention can achieve the following technical indicators:

[0016] (1) Working band: 8μm-14μm;

[0017] (2) Focal length: f'=49.3mm;

[0018] (3) Detector: long-wave infrared uncooled type 1024×768, 17μm;

[0019] (4) Field of view: 20°×15°;

[0020] (5) Relative aperture D / f': 1 / 0.9.

[0021] The parameters of the optical s...

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Abstract

The invention relates to an infrared lens for a dual-band navigation sensor, comprising a positive lens A, a negative lens B and a positive lens C arranged sequentially along the incident direction of light; an air gap between the positive lens A and the negative lens B The air gap between the negative lens B and the positive lens C is 17 mm. The beneficial effect of the invention is that the structure is simple, compact and stable, and can cooperate with a dual-band navigation sensor.

Description

technical field [0001] The invention relates to an infrared lens for a dual-band navigation sensor. Background technique [0002] Ordinary infrared lenses are generally used indoors or outdoors with good environmental conditions, because infrared lenses have a long distance at night; good anti-interference performance; intuitive images, easy to observe; strong ability to penetrate smoke, dust, and haze; all-weather, all-day It has the advantages of multi-target panoramic observation, tracking and target recognition capabilities, and good anti-target stealth capabilities. The application of infrared lenses is becoming more and more extensive, but generally the requirements for vibration are not high. Below 1g, there is no special requirement for weight. For a high-intensity vibration environment with a vibration frequency f=10 to 2000Hz and a root mean square vibration overload of 14.3g in three directions, the mechanical strength of ordinary infrared lenses is not enough, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B7/02
CPCG02B7/021
Inventor 林春生陈潇陈丽娜陈秋萍徐玉洁
Owner FUJIAN FORECAM OPTICS CO LTD
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