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Parallax elimination machine vision optical system

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

Active Publication Date: 2018-11-20
FUJIAN FORECAM OPTICS CO LTD
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  • Summary
  • 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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Embodiment Construction

[0016] The present invention will be further described below with reference to the drawings and specific embodiments.

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

[0018] In this embodiment, the meniscus lens A3 and the meniscus lens A4 constitute the front group cemented sheet one, the double convex positive lens A...

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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 in the field of artificial intelligence. The complex and diverse detection environment has put forward higher requirements for lenses used in the field of machine vision. There are a variety of machine vision lenses used in product inspection in the existing market, but these lenses have certain restrictions on the inspection conditions and cannot meet the function of parallax reduction. This type of lens generally has problems such as large distortion, large telecentricity, and uneven brightness of the picture. Summary of the invention [0003] The purpose of the present invention is to solve the above shortcomings and provide a simple structure aparallax machine vision optical system. [0004] The technical solution of the present invention...

Claims

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Application Information

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Patent Type & Authority Applications(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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