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Mid-wave infrared turntable optical lens and control method thereof

An optical lens and infrared technology, applied in the field of optics, can solve problems such as limiting the application range of medium-wave infrared continuous zoom lenses, affecting the ability of the lens to search and detect infrared targets, and difficult production and processing, etc., to achieve excellent imaging quality, imaging Excellent quality and compact effect

Active Publication Date: 2018-10-02
FUJIAN FORECAM OPTICS CO LTD
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  • Claims
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Problems solved by technology

In many special occasions, the traditional dual-field or even three-field zoom lenses can no longer meet the application requirements. More and more fields have an increasing demand for infrared continuous zoom lenses. Higher requirements are put forward for stability, production and processing costs, and external structure dimensions.
At present, the length of the existing medium-wave infrared continuous zoom lens is too long, the production and processing are difficult and expensive, and the image plane drift and shake are relatively serious during the zooming process, which affects the search and detection capabilities of the lens for infrared targets and limits the medium-wave infrared Application Range of Continuous Zoom Lens

Method used

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  • Mid-wave infrared turntable optical lens and control method thereof
  • Mid-wave infrared turntable optical lens and control method thereof
  • Mid-wave infrared turntable optical lens and control method thereof

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Embodiment Construction

[0034] like Figure 1~8 As shown, a medium-wave infrared turntable optical lens, the optical system of the lens is sequentially provided with a front fixed group lens, a variable power group lens, a compensation group lens and a rear fixed group lens along the incident direction of light; A first reflector 5-18 for optical path refraction is placed obliquely at the rear, and a first positive lens 5-15 and a negative lens 5-14 are arranged above the first reflector 5-18, and the negative lens 5-14. A second reflective mirror 6-13 for light path bending is placed obliquely above, and a second positive lens 6-12 is placed in front of the second reflective mirror 6-13.

[0035] In this embodiment, the air gap between the front fixed lens group and the variable power lens group is 13.0-31.72 mm; the air gap between the variable power lens group and the compensation group lens is 15.6-51.3 mm; the compensation group lens The air gap between the lens and the rear fixed lens group is 7...

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Abstract

The invention relates to a medium-wave infrared turntable optical lens and a control method thereof. The optical system of the lens is sequentially provided with a front fixed lens group, a zoom lens group, a compensation group lens and a rear fixed lens group along the incident direction of light; A first reflector for turning the optical path is placed obliquely behind the rear fixed group of lenses, a first positive lens and a negative lens are arranged above the first reflector, and a second reflector for turning the light path is placed obliquely above the negative lens , a second positive lens is placed in front of the second mirror. The medium-wave infrared turntable optical lens has the advantages of high imaging quality, high transmittance, light weight, and short zoom compensation stroke; realizes a small and compact shape structure; reduces the difficulty and cost of lens production and processing.

Description

technical field [0001] The invention relates to a mid-wave infrared turntable optical lens and a control method thereof, belonging to the field of optical technology. Background technique [0002] In recent years, the application field of infrared imaging technology has made great progress, and has broad application prospects in forward-looking detection, sight and sight equipment, search and tracking systems, and civil security systems. In many special occasions, the traditional dual-field or even three-field zoom lenses can no longer meet the application requirements. More and more fields have an increasing demand for infrared continuous zoom lenses. Higher requirements are put forward for stability, production and processing costs, and external structure dimensions. At present, the length of the existing medium-wave infrared continuous zoom lens is too long, the production and processing are difficult and expensive, and the image plane drift and shake are relatively seri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B15/15G02B7/04G02B7/182G02B1/00G03B17/17
CPCG02B7/04G02B7/182G02B15/15G03B17/17G02B1/00
Inventor 陈潇张清苏周阳丘国雄
Owner FUJIAN FORECAM OPTICS CO LTD
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