Long-focal-length high-uniformity vision detection system and manufacturing method thereof

A visual inspection and uniformity technology, which is applied in installation, optics, instruments, etc., can solve the problems of small light transmission of the inspection lens, poor close-range image quality, and complex structure, so as to improve the illumination and field area, and balance the optical focus Degree, improve the effect of primary chromatic aberration

Pending Publication Date: 2021-02-26
FUJIAN FUGUANG TIANTONG OPTICS
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Problems solved by technology

[0003] The present invention improves the above problems, that is, the technical problem to be solved by the present invention is that the current detection lens has problems such as small light transmission, complex structure, low and uneven illumination, and poor close-range image quality.

Method used

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  • Long-focal-length high-uniformity vision detection system and manufacturing method thereof
  • Long-focal-length high-uniformity vision detection system and manufacturing method thereof
  • Long-focal-length high-uniformity vision detection system and manufacturing method thereof

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] Such as Figure 1~4 As shown, a long focal length and high uniformity visual inspection system, the optical system of the lens is sequentially provided with a front lens group A, a diaphragm, a rear lens group B, and a flat protective glass D along the incident direction of light from left to right, The front lens group A includes a crescent-shaped lens A1 with a positive refractive power, a crescent-shaped lens A2 with a positive refractive power, and a crescent-shaped lens A3 with a negative refractive power arranged in sequence. The rear lens group B sequentially includes a crescent-shaped lens B1 with a negative power, a biconvex lens B2 with a positive power, a bi-convex lens B3 with a positive power, and a crescent lens with a positive power. Shaped lens B4, crescent-shaped lens B5 with negative power, flat protective gl...

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Abstract

The invention provides a machine vision system of a long-focal-length high-uniformity vision detection system and a manufacturing method thereof. A front lens group A, a diaphragm, a rear lens group Band flat protective glass are sequentially arranged in an optical system of a lens in the incident direction of light from left to right. The front lens group A comprises a crescent lens A1 with positive focal power, a crescent lens A2 with positive focal power and a crescent lens A3 with negative focal power which are arranged in sequence. The rear lens group B sequentially comprises a crescentlens B1 with negative focal power, a biconvex lens B2 with positive focal power, a biconvex lens B3 with positive focal power, a crescent lens B4 with positive focal power, a crescent lens B5 with negative focal power and flat protective glass. The machine vision system has the characteristics of large focal length, short working distance, light structure, large light transmission, highilluminanceand the like, and can be matched with a CMOS with 2 / 3'' 5 million pixels.

Description

technical field [0001] The invention relates to a machine vision system of a long focal length and high uniformity vision detection system and a manufacturing method thereof. Background technique [0002] At present, many inspection lenses similar to this kind of invention have been put into use, but other such lenses have small light transmission, complex structure, low and uneven illumination, poor close-up image quality, high cost or low edge MTF, etc. It is difficult to meet the current detection needs, making it difficult to effectively promote this type of lens. Contents of the invention [0003] The present invention improves the above problems, that is, the technical problem to be solved by the present invention is that the current detection lens has problems such as small light transmission, complex structure, low and uneven illuminance, and poor close-range image quality. [0004] The specific embodiment of the present invention is: a long focal length and high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B7/02G02B1/00G02B27/00
CPCG02B1/00G02B7/025G02B13/006G02B27/0025
Inventor 谢建城李俊攀何丽鹏
Owner FUJIAN FUGUANG TIANTONG OPTICS
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