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Optical lens achieving temperature compensation

An optical lens and temperature compensation technology, applied in the field of optical lens, can solve problems such as large impact, unsatisfactory imaging clarity, poor temperature compensation performance, etc., and achieve high-resolution effects

Active Publication Date: 2014-08-27
舜宇光学(中山)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, limited by the physical properties of the plastic material itself, thermal expansion and contraction caused by temperature changes have a great impact on imaging, and the temperature compensation performance is not good enough to maintain a perfect temperature range of -30°C to +70°C. Imaging clarity

Method used

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  • Optical lens achieving temperature compensation
  • Optical lens achieving temperature compensation
  • Optical lens achieving temperature compensation

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Embodiment Construction

[0037] A further detailed description will be made below in conjunction with the accompanying drawings and embodiments of the present invention:

[0038] Such as figure 1 As shown, an optical lens for realizing temperature compensation includes a lens housing, and a lens made of optical glass and / or optical resin is arranged in the lens housing from the object side to the image side, including in turn:

[0039] The first lens 1 has a straw hat lens with negative power;

[0040] The second lens 3 has a biconvex lens with positive power;

[0041] The third lens 4, which has a biconvex lens with positive refractive power;

[0042] The fourth lens 5, which has a biconcave lens with negative power;

[0043] A diaphragm element 2 is arranged between the first lens 1 and the second lens 3, the fourth lens 5 is optically connected with a color filter 6, and the visible light band and the near-infrared band introduced by the lens are focused on the same focal plane , enabling clear...

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Abstract

The invention discloses an optical lens achieving temperature compensation. The optical lens comprises a lens outer shell, and lens bodies are arranged inside the lens outer shell from object space to image space and made of optical glass and / or optical resin. The lens bodies sequentially comprise the first lens body, the second lens body, the third lens body and the fourth lens body. The first lens body is a straw-hat-shaped lens body with negative focal power, the second lens body is a bi-convex type lens body with positive focal power, the third lens body is a bi-convex type lens body with positive focal power, and the fourth lens body is a bi-concave type lens body with negative focal power. A diaphragm element is arranged between the first lens body and the second lens body, the fourth lens body is connected with a color filter, visible light bands and near-infrared bands guided into the lens are focused on the same focal plane, and therefore the optical lens can clearly perform imaging in day and night modes.

Description

[technical field] [0001] The invention relates to an optical lens for realizing temperature compensation. [Background technique] [0002] With the rapid rise of the security monitoring market this year and the optimization and improvement of digital processing and network transmission speeds, the quality requirements for security monitoring lenses have been greatly improved, from ordinary monitoring needs to high-definition identification, from single-point small-scale applications in government agencies to ordinary The cost control in the civilian market, and its strict, complex and changeable environment, have higher and higher requirements for camera lenses. [0003] At present, the security monitoring lens is generally composed of 4 to 6 lenses, all of which are spherical glass. With the soaring price of raw materials, the price of finished glass lenses is also getting higher and higher, which leads to the high cost of camera lenses, and it is difficult to popularize th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/18G02B13/14G02B1/04G02B1/00
Inventor 高屹东白兴安梁伟朝范家永陈鹏翟林燕赵会堂吴正香付湘发蔡维展靳明生吴振
Owner 舜宇光学(中山)有限公司
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