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A parallax-free machine vision optical system

An optical system and machine vision technology, applied in optics, optical components, instruments, etc., can solve the problems of limited detection conditions, uneven brightness of the picture, large telecentricity, etc., to ensure stability, reduce sensitivity, and simplify the structure. Effect

Active Publication Date: 2020-11-10
FUJIAN FORECAM OPTICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A variety of machine vision lenses have been used in product inspection in the existing market, but these lenses have certain restrictions on the inspection conditions, and cannot meet the function of eliminating parallax
Such lenses generally have problems such as large distortion, large telecentricity, and uneven brightness of the picture.

Method used

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  • A parallax-free machine vision optical system
  • A parallax-free machine vision optical system

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] Such as figure 1 As shown, a parallax-free machine vision optical system, the optical system is composed of eight glass spherical lenses, the optical system of the lens is provided with a front group A, a diaphragm C, and a rear group sequentially along the incident direction of light from left to right B, flat glass, the front group A includes a biconvex lens A1 with a positive refractive power, a meniscus lens A2 with a positive refractive power, a meniscus lens A3 with a negative refractive power, and a positive refractive power Meniscus lens A4, biconvex positive lens A5, meniscus lens A6 with negative refractive power, the rear group B includes biconcave negative lens B1, biconvex positive lens B2.

[0018] In this embodiment, the meniscus lens A3 and the meniscus lens A4 constitute the first group of glued sheets, the biconvex pos...

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Abstract

The invention relates to a parallax elimination machine vision optical system. The optical system of the lens comprises a front group A, a aperture C, a rear group B and the flat glass sequentially arranged along the incident direction of the light from left to right, wherein the front group A comprises a double-convex lens A1 with positive refractive power, a meniscus lens A2 with positive refractive power, a meniscus lens A3 with negative refractive power, a meniscus lens A4 with positive refractive power, a double-convex positive lens A5 and a meniscus lens A6 with negative refractive power, and the rear group B comprises a double-concave negative lens B1 and a double-convex positive lens B2. The optical system meets telecentric system requirements of the object, magnifying powers of detected images can be made be uniform within the certain object distance range, and the distortion factor of the detected images is greatly reduced through quite small distortion.

Description

technical field [0001] The invention relates to a parallax-free machine vision optical system. Background technique [0002] In recent years, the field of machine vision has developed rapidly, and machine vision has become an important branch of the field of artificial intelligence. The complex and diverse detection environment puts forward higher requirements for lenses used in the field of machine vision. A variety of machine vision lenses have been used in product inspection in the existing market, but these lenses have certain restrictions on the inspection conditions and cannot satisfy the function of eliminating parallax. Such lenses generally have problems such as large distortion, large telecentricity, and uneven brightness of the picture. Contents of the invention [0003] The object of the present invention is to provide a simple-structured anti-parallax machine vision optical system aiming at the above deficiencies. [0004] The technical solution of the prese...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/00G02B13/00G02B1/00
CPCG02B1/00G02B13/0015G02B27/0025
Inventor 李俊攀杨樟洪魏雄斌吴庆锋
Owner FUJIAN FORECAM OPTICS CO LTD
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