A super large target continuous zoom lens for line scan camera system

A camera system and zoom lens technology, applied in optical components, instruments, optics, etc., can solve the problems of not being able to provide small target detail recognition, low adjustability, and high cost at the same time, so as to meet the needs of industrial cameras and reduce system Effect of length, increasing resolution level

Active Publication Date: 2021-08-10
FUJIAN FORECAM OPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These lenses have their inherent defects. Their field of view is fixed, and they cannot simultaneously provide the functions of zooming in on small targets for detail recognition and complete sampling of large targets. Multiple camera systems must be configured to work at the same time, which in fact requires a larger volume. , higher cost, less adjustability

Method used

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  • A super large target continuous zoom lens for line scan camera system
  • A super large target continuous zoom lens for line scan camera system
  • A super large target continuous zoom lens for line scan camera system

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as Figure 1~5 As shown, the present invention is a super-large target surface continuous zoom lens for a line-scan camera system. In the optical system of the lens, a front fixed group A with a positive focal power is sequentially provided along the incident direction of the light from left to right. , zoom group B with negative power, compensation group C with positive power, diaphragm D, and rear fixed group E with negative power; by changing front fixed group A, zoom group B, compensation The interval between group C and diaphragm D, and keep the total length constant, realize the continuous change of focal length. When zooming from the wide-angle end to the telephoto end, the zoom group B is far away from the object side, and the compensation group C is close to the object side.

[0024] In this embodiment, the air ...

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PUM

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Abstract

The invention relates to a super-large target surface continuous zoom lens for a line-scan camera system, comprising a front fixed group A with a positive focal power, a zoom group B with a negative focal power, and a compensation group with a positive focal power C. Diaphragm D and the rear fixed group E with negative refractive power, the front fixed group A includes the first cemented group in which the negative meniscus lens A1 and the positive meniscus lens A2 are in close contact, and the positive meniscus lens A3; the zoom group B Including the second cemented group of double-concave lens B1, plano-concave lens B2 and positive meniscus lens B3; the compensation group C includes the third cemented group of double-convex lens C1, negative meniscus lens C2 and double-convex lens C3; the rear fixed group E includes The fourth cemented group of biconvex lens E1 and biconcave lens E2 in close contact, negative meniscus lens E3, the fifth cemented group of plano-convex lens E4 and biconcave lens E5 in close contact, biconvex lens E6, and mirror E7. The invention has a reasonable design, and realizes continuous variable focal length through the movement of the variable magnification group and the compensation group.

Description

Technical field: [0001] The invention belongs to the field of photoelectric technology, in particular to a super-large target surface continuous zoom lens for a line-scan camera system. Background technique: [0002] In the field of industrial photography, the degree of image restoration, image frame rate, and single frame rate information are getting higher and higher. The above requirements lead industrial imaging equipment to develop in the following directions: (1) The size of the detector is getting larger and the effective pixel The number increases, increasing the amount of single frame rate information; (2) The lens has a large amount of light, the exposure time is reduced, and the frame rate is increased; (3) The optical distortion is small, the image restoration degree is high, and because the image processing time is reduced, the frame rate is indirectly improved frequency rate. [0003] Therefore, in the field of linear array imaging, the selected lens must have...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B15/173G02B17/02G02B27/00
CPCG02B15/173G02B17/023G02B27/0025
Inventor 屈立辉肖维军张昌炜陈秀秀黄媛
Owner FUJIAN FORECAM OPTICS CO LTD
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