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Compact-structure Kepler optical system

An optical system with a compact structure, which is applied in the field of telephoto optics to achieve the effects of improving resolution, reducing aberration, and increasing field of view and depth of field

Active Publication Date: 2015-05-06
淄博海泰新光光学技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a Kepler optical system with a compact structure, which not only ensures a shorter overall length of the telescopic system, but also overcomes the problem of US7719765B2 The patent cannot add the defect of the field diaphragm

Method used

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Embodiment 1

[0013] Embodiment 1: focusing lens 22 is a single lens, image transfer prism one 21 is a half pentagonal prism, image transfer prism two 23 is a Schmidt roof prism, the outgoing optical axis of the Schmidt roof prism and the incident optical axis of the half pentagonal prism coincide.

[0014] The working principle is: the light reflected from a distant object enters the objective lens group 1, converges into the half pentagonal prism through the objective lens group 1, exits from the exit surface of the half pentagonal prism, enters the focusing lens 22, and converges in the double convergence of the objective lens group 1 and the focusing lens 22 Under the action, the image distance will be shortened, and the image will be imaged at the field diaphragm after exiting the Schmidt roof prism, and a virtual image will be formed after passing through the eyepiece, and the human eye can observe the enlarged virtual image at the exit pupil. The pentagonal prism contains 2 reflectiv...

Embodiment 2

[0015] Embodiment 2: focusing lens 22 is a cemented lens, image transfer prism one 21 is a Schmidt roof prism, transfer image prism two 23 is a half pentagonal prism, the incident optical axis of the Schmidt roof prism and the outgoing optical axis of the half pentagonal prism coincide.

[0016] The working principle of embodiment 2 is similar to that of embodiment 1, and will not be repeated here.

[0017] The compact Kepler telescopic optical system of the present invention is particularly suitable for use in surgical operations, dental examinations, and pocket telescopes.

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Abstract

The invention relates to a compact-structure Kepler optical system and belongs to the technical field of telescopic optics. An adopted method includes that a Kepler optical system for image inversion of a conventional prism group is improved, and a focusing lens group is added between two prisms of an image inversion prism group to reduce imaging distance, so that the whole Kepler optical system is enabled to be compact in structure; an imaging face is enabled to be positioned between an image inversion component and an eyepiece group, and a field stop is added on the imaging face. Integral length of the conventional Kepler optical system is reduced effectively, so that a telescopic system is more compact in structure, aberration of the optical system can be reduced, resolution of the system is improved, and field angle and depth of field are increased. The compact-structure Kepler optical system is suitable for being applied to surgery, dental examination and miniature telescopes.

Description

technical field [0001] The invention relates to a compact Kepler optical system, which belongs to the technical field of telescopic optics. Background technique [0002] The Kepler telescopic system is the most widely used telescopic system, and the Kepler telescopic system using the Bechan prism group to convert the image is more widely used because it has the advantages of a relatively compact structure while forming a positive image. In recent years, some new applications require the structure of the entire telescopic system to be more compact, such as dental examinations in the medical field, magnifying glasses used in some surgical operations or some pocket-sized telescopes, and the overall length of the entire system has been raised. Shorter requirements, it is difficult to meet the requirements of the application by using the Bechan prism group Kepler telescopic system commonly used at present. US Patent US7719765B2 proposes an improved Kepler telescopic system, at th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/00G02B23/00G02B7/04G02B7/18
CPCG02B7/04G02B7/1805G02B23/02G02B23/06
Inventor 辜长明
Owner 淄博海泰新光光学技术有限公司
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