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8k line scanning lens

A scanning lens and k-line technology, applied in the field of online scanning lens, can solve the problems of low image precision, large color difference, easy image distortion, etc., and achieve the effect of improving the detection quality

Inactive Publication Date: 2008-07-09
THE 45TH RES INST OF CETC
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of 8k line scan lens, to solve the problems of low precision, large chromatic aberration and easy image distortion of traditional line scan lens

Method used

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  • 8k line scanning lens
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  • 8k line scanning lens

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Embodiment Construction

[0023] Examples see figure 1 , figure 2 , image 3 As shown, this 8k line scan lens includes a lens barrel 10 and a variable diaphragm 9 and a plurality of mirrors that are linearly combined in the lens barrel 10, and is characterized in that: from the object space to the image space, the lens barrel In 10, the first convex-concave lens 1, the second convex-concave lens 2, the first biconvex lens 3 and the glued part of the first biconcave lens 4, the variable diaphragm 9, the second biconcave lens 5 and the second biconcave lens 5 are fixed in sequence. A glued piece of convex lens 6 , a first concave-convex lens 7 , and a second concave-convex lens 8 .

[0024] A plurality of annular bosses 101 for fixing the lenses are distributed on the inner wall of the lens barrel 10 .

[0025] The working process of the present invention: the present invention is used in the visible spectrum range, and the chromatic aberration needs to be strictly corrected. At the same time, in vie...

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Abstract

A 8k line scan lens is characterized in that, from an object side to an image side, a first convex-concave lens, a second convex-concave lens, a doublet of a first biconvex lens and a first biconcave lens, an iris, a doublet of a second biconcave lens and a second biconvex lens, a first concave-convex lens and a second concave-convex lens are sequentially fixed in a lens barrel. The invention has the advantages of high accuracy and small aberration, and the image is unlikely to be distorted. The line scan lens with adjustable amplification rate can be applied in automatic optical detection equipment and can be matched with large-size and high-accuracy line array CCD camera.

Description

(1) Technical field [0001] The invention relates to a lens, in particular to a line scan lens. (2) Background technology [0002] At present, automatic optical inspection (AOI) equipment has been widely used in the automatic inspection of printed circuit boards to improve production efficiency and yield, and the line scan lens is the core component of automatic optical inspection equipment, only the lens is accurate and clear Only by obtaining real printed circuit board images can the back-end image processing be carried out. Most of the lens components on the previous automatic optical inspection equipment are imported from abroad. These line scan lenses have the defects of low precision, large chromatic aberration, and easy distortion. The distortion rate of foreign imported products is generally around 0.1%. (3) Contents of the invention [0003] The object of the present invention is to provide an 8k line scan lens to solve the problems of low precision, large chromat...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B7/02
Inventor 孙明睿姚立新吴光庆杨志黄晓鹏
Owner THE 45TH RES INST OF CETC
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