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Large-target-surface large-viewing-angle machine vision lens

A machine vision, large viewing angle technology, applied in the field of lenses, can solve the problems of small supporting target surface, small field of view, large distortion, etc., and achieve the effect of low distortion, large field of view, and small distortion.

Pending Publication Date: 2021-04-30
JIANGXI PHENIX OPTICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing machine vision lenses generally have defects of different types or degrees, such as small target surface, low pixels, small field of view, and large distortion.

Method used

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  • Large-target-surface large-viewing-angle machine vision lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] Such as Figure 1-5 As shown, a machine vision lens with a large target surface and a large viewing angle includes the first lens group G arranged sequentially from the object plane to the image plane 1 , stop ST, second lens group G 2 , the third lens group G 3 . Among them, the first lens group G 1 Including optical elements L arranged sequentially from the object plane to the image plane 11 , optical element L 12 , optical element L 13 , optical element L 14 , optical element L 15 , optical element L 16 , optical element L 17 and optics L 18 , the second lens group G 2 Including optical elements L arranged sequentially from the object plane to the image plane 21 , optical element L 22 , optical element L 23 , optical element L 24 and optics L 25 , the third lens group G 3 Including optical elements L arranged sequentially from the object plane to the image plane 31 and optics L 32

[0098] Specifically, such as figure 1 Shown, L 11 is a positive...

Embodiment 2

[0109] Such as Figure 6-10 As shown, a machine vision lens with a large target surface and a large viewing angle includes the first lens group G arranged sequentially from the object plane to the image plane 1 , stop ST, second lens group G 2 , the third lens group G 3 . Among them, the first lens group G 1 Including optical elements L arranged sequentially from the object plane to the image plane 11 , optical element L 12 , optical element L 13 , optical element L 14 , optical element L 15 , optical element L 16 , optical element L 17 and optics L 18 , the second lens group G 2 Including optical elements L arranged sequentially from the object plane to the image plane 21 and optics L 22 , the third lens group G 3 Including optical elements L arranged sequentially from the object plane to the image plane 31 , optical element L 32 , optical element L 33 , optical element L 34 , optical element L 35 and optics L 36 .

[0110] Specifically, such as Figure ...

Embodiment 3

[0121] Such as Figure 11-15 As shown, a machine vision lens with a large target surface and a large viewing angle includes the first lens group G arranged sequentially from the object plane to the image plane 1 , stop ST, second lens group G 2 , the third lens group G 3 . Among them, the first lens group G 1 Including optical elements L arranged sequentially from the object plane to the image plane 11 , optical element L 12 , optical element L 13 , optical element L 14 , optical element L 15 , optical element L 16 and optics L 17 , the second lens group G 2 Including optical elements L arranged sequentially from the object plane to the image plane 21 and optics L 22 , the third lens group G 3 Including optical elements L arranged sequentially from the object plane to the image plane 31 , optical element L 32 , optical element L 33 , optical element L 34 and optics L 35 .

[0122] Specifically, such as Figure 11 Shown, L 11 is a positive meniscus lens, L ...

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Abstract

The invention discloses a large-target-surface large-viewing-angle machine vision lens which comprises a first lens group G1, a second lens group G2 and a third lens group G3 with positive focal power which are sequentially arranged from an object surface to an image surface, and during focusing, the first lens group G1 and the third lens group G3 are fixed relative to the image surface, and the second lens group G2 moves along an optical axis. According to the lens, by reasonably controlling the focal length ratio, the lens shape and the focal power of each lens group, high-quality imaging can be realized in a wide working distance range, the distortion is small, the resolution is high, the lens has a large target surface, a large viewing angle and high pixel performance, and the miniaturization and light weight of the lens are easy to realize.

Description

technical field [0001] The invention belongs to the technical field of lenses, and in particular relates to a machine vision lens with a large target surface and a large viewing angle. Background technique [0002] Machine vision refers to the use of machines instead of human eyes for measurement and judgment. The visual lens captures the picture, and converts the captured target into an image signal through an image capture device such as an industrial camera, and then through an image processing system, calculates these signals and extracts target features, such as position, size, appearance, etc., and then according to the preset Conditional output results to realize automatic identification, judgment, measurement and other functions. [0003] Existing machine vision lenses generally have defects of different types or degrees such as small target surface, low pixels, small field of view, and large distortion. Therefore, with the development of chip technology and the im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B15/17
CPCG02B15/17
Inventor 虞翔宋喆男梁宏皓汤熙斌
Owner JIANGXI PHENIX OPTICS TECH CO LTD
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