The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 05, 2022
Filed:
Jun. 21, 2017
Applicant:
Mil-kin Inc., Tokyo, JP;
Inventors:
Assignee:
MIL-KIN INC., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 21/02 (2006.01); G02B 15/10 (2006.01); G02B 21/36 (2006.01); G02B 21/04 (2006.01); G02B 21/06 (2006.01);
U.S. Cl.
CPC ...
G02B 21/025 (2013.01); G02B 15/10 (2013.01); G02B 21/36 (2013.01); G02B 21/04 (2013.01); G02B 21/06 (2013.01);
Abstract
The optical system for a microscope includes an illumination lens group Gand an objective optical system. The objective optical system has an objective lens group G, a first image forming lens group G, and a second image forming lens group G, which are disposed in this order from the object side, and satisfies the following conditional expressions. NA×2≤NA≤NA×15 . . . (1); 0.01≤NA≤0.1 . . . (2); and 25≤M≤100 . . . (3), where NAdenotes the numerical aperture of the illumination lens group G, NAdenotes the numerical aperture of the objective lens group G, and Mdenotes the image-formation magnification of the objective lens group G