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Lens barrel system and microscope

A microscope and lens barrel technology, applied in microscopes, instruments, optics, etc., can solve the problems of lateral chromatic aberration, complex objective lens structure, large construction length, etc., to eliminate spherical aberration and/or coma, improve optical properties, reduce Effects of Monochromatic Imaging Aberrations

Active Publication Date: 2021-02-02
CARL ZEISS MICROSCOPY GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lenses of the tube system are made of expensive glass
Disadvantages of the tube system according to US 2010 / 172 029 A1 include the relatively large build length and the fact that compensation of lateral chromatic aberration cannot be used by the objective and the tube system, resulting in a complex construction of the objective and thus high costs

Method used

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  • Lens barrel system and microscope
  • Lens barrel system and microscope
  • Lens barrel system and microscope

Examples

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Embodiment Construction

[0071] Different variants of the tube system 1 of the microscope are described below. First, the general properties of the lens barrel system according to the present invention are described.

[0072] Tube system 1 consists of two tube lenses L 1 , L 2 and glass element G. The tube lens L 1 , L 2 Has refractive power.

[0073] Glass element G has no refractive power. As an example, it could be a deflecting prism.

[0074] The object field of the tube system 1 is at infinity. The entrance pupil EP of the tube system 1 is at LP, ie at a finite distance. LP denotes the relative z position of the entrance pupil of the tube system with respect to the contact surface of the objective. The same value, -15mm, is assumed for all exemplary embodiments.

[0075] The actual relative position of the entrance pupil EP of the tube system 1 depends on the objective used. The example illustrated below relates to a field number SFZ of 25 and an image-side numerical aperture NA' of 0....

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Abstract

A lens barrel system (1) of a microscope comprises two lenses (L1, L2) and a glass element (G). The system has a compact construction and aberration within a specified range.

Description

[0001] Cross References to Related Applications [0002] The entire content of German patent application DE 10 2019 211 360.5 is hereby incorporated by reference. technical field [0003] The invention relates to a lens barrel system for a microscope. In addition, the invention relates to a microscope with such a tube system. Background technique [0004] WO 2005 / 088 378 A1 already discloses a tube system for a microscope, in which the infinity space between the objective and the tube system has not yet been fully corrected. In this case, changes in the length of the infinity space produce changes in lateral chromatic aberration due to longitudinal chromatic aberration that is not fully corrected, as well as changes in coma and other monochromatic imaging aberrations. In addition, lateral chromatic aberration occurs on the optical axis of the barrel system if the objective lens and the barrel system are laterally offset from each other or if a flat plate made of glass is i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B21/02G02B27/00G02B1/00
CPCG02B21/02G02B27/0062G02B27/0025G02B1/00G02B13/00
Inventor R.史M.汉弗特T.诺比斯P.施努尔J.诺布利希
Owner CARL ZEISS MICROSCOPY GMBH