Low-distortion high-resolution day and night dual-purpose miniature pick-up lens

A high-resolution, miniature camera technology, applied in the field of lenses, which can solve the problems of narrow spectral range, large picture difference, large image distortion, etc., and achieve uniform illumination and excellent aberration correction effect.

Active Publication Date: 2012-12-12
FUJIAN FORECAM OPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The emergence and application of small TV surveillance cameras have a history of 20 to 30 years. There are various specifications and models of miniature camera lenses to match them. Their performance indicators vary, and most of them are low-end products with low performance indicators. Applicable to ordinary cameras with 200,000 to 300,000 pixels; the adaptive spectral range is narrow, and can only be used under daytime light conditions of 480nm to 700nm; the image distortion is large, and the difference between the image distortion and the real scene becomes larger, and the authenticity is poor

Method used

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  • Low-distortion high-resolution day and night dual-purpose miniature pick-up lens

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Embodiment Construction

[0012] refer to figure 1 with figure 2 , the present invention relates to a low-distortion, high-resolution, day-and-night dual-purpose miniature camera lens. Along the incident direction of light from left to right, a front group A with a negative focal power and a rear group B with a positive focal power are arranged respectively. Group A is composed of negative crescent lens A-1, biconvex lens A-2 and plano-concave lens A-3; the rear group B is composed of biconvex lens B-1 and biconcave lens B-2 closely bonded group, negative crescent lens B -3. It is composed of a glued set of negative crescent lens B-4 and biconvex lens B-5 in close contact.

[0013] The air gap between the above-mentioned front group A and the rear group B is: 4.11mm, the air gap between the negative crescent lens A-1 and the biconvex lens A-2 is 0.79mm, and the biconvex lens A-2 and the plano-concave lens The air gap of A-3 is 0.1mm, and the air gap between the double-convex lens B-1 and the bi-conc...

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Abstract

The invention relates to a low-distortion high-resolution day and night dual-purpose miniature pick-up lens, comprising a front set A with negative focal power and a rear set B with positive focal power, wherein the front set A and the rear B are arranged along the incident direction of light from left to right. The miniature pick-up lens provided by the invention is characterized in that the front set A comprises a negative crescent lens A-1, a biconvex lens A-2 and a plano-concave lens A-3; the rear set B comprises a bonding group formed by hermetically adhering a biconvex lens B-1 with a biconcave lens B-2, a negative crescent lens B-3, and a bonding group formed by hermetically adhering a negative crescent lens B-4 with a biconvex lens B-5. The low-distortion high-resolution day and night dual-purpose miniature pick-up lens has the advantages of low distortion, large relative aperture, high resolution and broad spectrum confocal, and is a mainstream product for a miniature television monitoring pick-up system.

Description

technical field [0001] The invention relates to a low-distortion, high-resolution day-night dual-purpose miniature camera lens with large relative aperture, high resolution, high transmittance, vibration and impact resistance, and belongs to the field of lenses. Background technique [0002] The emergence and application of small TV surveillance cameras have a history of 20 to 30 years. There are various specifications and models of miniature camera lenses to match them. Their performance indicators vary, and most of them are low-end products with low performance indicators. It is suitable for ordinary cameras with 200,000 to 300,000 pixels; the adaptive spectral range is narrow, and can only be used under daytime light conditions of 480nm to 700nm; the image distortion is large, and the difference between image distortion and the real scene becomes larger, and the authenticity is poor. Contents of the invention [0003] The purpose of the present invention is to overcome ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/04G02B13/18G02B7/02
Inventor 屈立辉许端霞
Owner FUJIAN FORECAM OPTICS CO LTD
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