High-magnification high-resolution catadioptric telecentric lens

A high-resolution, telecentric lens technology, applied in the field of optical lenses, can solve the problem that the magnification and resolution cannot meet the requirements, and achieve the effect of reducing the overall volume

Pending Publication Date: 2022-02-01
SHENZHEN DAJIAN OPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the maximum magnification of telecentric lens is generally 1-1.5 times, 2 times is relatively rare, NA (fiber numerical aperture) is generally below 0.1, and the target surface is generally less than 1 inch. For some new applications at present, magnification and resolution rate can not meet the requirements

Method used

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Embodiment Construction

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present invention. .

[0024] Such as figure 1 As shown, the specific structure of the present invention is: a high-magnification high-resolution catadioptric telecentric lens, including a first reflector 10 and a second reflector 11 that are inclined and oppositely arranged, and the distance between the object plane and the first reflector 10 is A first lens 1 is arranged between them, a second lens 2, a third lens 3 and a fourth lens 4 are arranged in sequence between the first reflecting mirror 10 and the second reflecting mirror 11, and the second reflecting mirror 11 and the image plane The fifth lens 5, the sixth lens...

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PUM

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Abstract

The invention relates to a high-magnification high-resolution catadioptric telecentric lens which comprises a first reflector and a second reflector, wherein a first lens is arranged between an object plane and the first reflector, and a second lens, a third lens and a fourth lens are arranged between the first reflector and the second reflector; a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens are arranged between the second reflector and the image plane, and the first lens is a plano-convex lens protruding towards the image direction; the second lens is a plano-convex lens protruding towards the image direction; the third lens is glued with the fourth lens; the third lens is a biconvex lens; the fourth lens is a plano-concave lens which is concave towards the object direction; the fifth lens is glued with the sixth lens; the fifth lens is a concave plano-concave lens; the sixth lens is a biconvex lens; the seventh lens is glued with the eighth lens; the seventh lens is a biconvex lens; the eighth lens is a biconcave lens; and the ninth lens is a biconcave lens. The maximum magnification is 4 times, the maximum support of the target surface is 30 mm, and NA is greater than 1.5.

Description

technical field [0001] The invention relates to the field of optical lenses, in particular to a high-magnification and high-resolution reflection telecentric lens. Background technique [0002] With the rapid development of science and technology, lens imaging is applied to more and more fields, such as industrial automation detection, laser ranging, spectral measurement and many other fields. These fields have higher and higher requirements for lenses, requiring lens resolution High, large depth of field, wide applicable spectral range, achromatic, small size, strong versatility, large target surface, etc. [0003] At present, the maximum magnification of telecentric lens is generally 1-1.5 times, 2 times is relatively rare, NA (fiber numerical aperture) is generally below 0.1, and the target surface is generally less than 1 inch. For some new applications at present, magnification and resolution rate cannot meet the requirements. Contents of the invention [0004] The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/22G02B17/08G03B11/00
CPCG02B13/22G02B17/08G03B11/00
Inventor 苏晓明陈晓静王凯
Owner SHENZHEN DAJIAN OPTICS CO LTD
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