Infrared confocal wide-angle lens optical system

A wide-angle lens and infrared confocal technology, which is applied in the field of infrared confocal wide-angle lens optical systems, can solve the problems that cannot meet the high-definition requirements of day and night imaging, the surrounding brightness of the imaging picture is not large enough, and the relative illumination is low, so as to reduce the high and low temperature. The effect of drift, small temperature drift and high relative illumination

Pending Publication Date: 2019-04-16
UNION OPTECH
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Problems solved by technology

[0002] At present, the wide-angle lenses used in the vehicle and monitoring industries generally can only obtain good imaging effects in the wavelength range of 400-700nm, which cannot meet the high-definition requirements of imaging during the day and night, and the sharpness is seriously reduced in high and low temperature environments, and the temperature drift is large. The surrounding brightness of the imaging screen is not large enough, and the relative illumination is low

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  • Infrared confocal wide-angle lens optical system
  • Infrared confocal wide-angle lens optical system
  • Infrared confocal wide-angle lens optical system

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Embodiment Construction

[0051]The technical features of the present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can understand.

[0052] An infrared confocal wide-angle lens optical system, which is sequentially provided with a first lens 1, a diaphragm 2, a second lens 3, a third lens 4, a fourth lens 5, a fifth lens 6, and a sixth lens from the object side to the image side 7. Optical filter 8, protective glass 9, photosensitive chip 10;

[0053] Each lens has an object side and an image side, respectively, the first lens object side S1, the first lens image side S2, the second lens object side S3, the second lens image side S4, the third lens object side S5, the third lens Lens image side S6, fourth lens object side S7, fourth lens image side S8, fifth lens object side S9, fifth lens image side S10, sixth lens object side S11, sixth lens image side S12;

[0054] The first lens object side S1 is a convex surface...

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Abstract

The invention discloses an infrared confocal wide-angle lens optical system. The main points of the technical scheme are that the system is provided with a first lens, a diaphragm, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, an optical filter, protective glass and a photosensitive chip in sequence from the object side to the image side. The concave-convex spherical surface combination structure adopted by each lens can achieve an objective of high resolution of the wide-angle optical system through reasonably distributing the focal power and selecting glass materials with different dispersion coefficients, and can better achieve infrared confocal. The infrared confocal wide-angle lens optical system selects the structure form of six glass spherical lenses, and obtains high relative illumination while reducing the high and low temperature drift through reasonably controlling the thickness and air interval distance of each lens and selecting materials with anappropriate reflective index.

Description

【Technical field】 [0001] The invention relates to an infrared confocal wide-angle lens optical system. 【Background technique】 [0002] At present, the wide-angle lenses used in the vehicle and monitoring industries generally can only obtain good imaging effects in the wavelength range of 400-700nm, which cannot meet the high-definition requirements of imaging during the day and night, and the sharpness is seriously reduced in high and low temperature environments, and the temperature drift is large. The surrounding brightness of the imaging screen is not large enough, and the relative illuminance is low. [0003] The present invention is made based on this situation. 【Content of invention】 [0004] The object of the present invention is to overcome the deficiencies of the prior art and provide an infrared confocal wide-angle lens optical system. [0005] The present invention is achieved through the following technical solutions: [0006] An infrared confocal wide-angle...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/06G02B13/14
CPCG02B13/005G02B13/008G02B13/06G02B13/14
Inventor 罗吉祥肖明志
Owner UNION OPTECH
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