Title:
MICROSCOPE OBJECTIVE OPTICAL SYSTEM HAVING WIDE SPECTRUM, LARGE NUMERICAL APERTURE, AND ULTRA-HIGH FLUX
Document Type and Number:
WIPO Patent Application WO/2020/215867
Kind Code:
A1
Abstract:
A microscope objective optical system that has a wide spectrum, a large numerical aperture and ultra-high flux, successively comprising along the optical axis direction from an object plane to an image plane: a first lens group, a second lens group, a third lens group, and a fourth lens group, which are 20 lenses in total, wherein the first lens group is a catadioptric lens group, and light emitted from the object plane is imaged to a primary image plane (23) by means of folding a light path twice. The first lens group has positive focal power; the second lens group and the third lens group image the light that traverses the primary image plane (23) to a secondary image plane (24), and the second lens group and the third lens group both have positive focal power; and the fourth lens group images the light that traverses the secondary image plane (24) to the image plane. The present optical system has a small size while having a wide imaging spectrum and a large field angle.
Inventors:
ZHANG XIN (CN)
WANG CHAO (CN)
QU HEMENG (CN)
GUAN HAIJUN (CN)
SHI GUANGWEI (CN)
WANG CHAO (CN)
QU HEMENG (CN)
GUAN HAIJUN (CN)
SHI GUANGWEI (CN)
Application Number:
PCT/CN2020/076163
Publication Date:
October 29, 2020
Filing Date:
February 21, 2020
Export Citation:
Assignee:
CHANGCHUN INSTITUTE OF OPTICS FINE MECH AND PHYSICS CHINESE ACADEMY OF SC (CN)
CHANNGCHUN CHANGGUANG ADVANCED OPTICS TECH CO LTD (CN)
CHANNGCHUN CHANGGUANG ADVANCED OPTICS TECH CO LTD (CN)
International Classes:
G02B21/02; G02B1/00; G02B17/08; G02B21/33
Foreign References:
| CN110045492A | 2019-07-23 | |||
| CN210072183U | 2020-02-14 | |||
| US20130308181A1 | 2013-11-21 | |||
| US20140226203A1 | 2014-08-14 | |||
| US10139610B2 | 2018-11-27 | |||
| CN107505692A | 2017-12-22 |
Attorney, Agent or Firm:
SHENZHEN KEJIN INTELLECTUAL PROPERTY OFFICE (CN)
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