US2012092761A1PendingUtilityA1

Microscope system

Assignee: MATSUI KUMIKOPriority: Jan 23, 2008Filed: Dec 22, 2011Published: Apr 19, 2012

Est. expiryJan 23, 2028(~1.5 yrs left)· nominal 20-yr term from priority

Inventors:Kumiko Matsui Katsuya Watanabe

G02B 13/22Y10S359/90A61B 2090/373G02B 21/14G02B 21/02A61B 90/20

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Claims

Abstract

A microscope system is characterized in comprising a transmission illumination optical system having a light source ( 11 ) and a condenser lens ( 13 ); a first dry objective ( 15 a ) having a magnification of from 20 or higher to 40 or lower and capable of viewing by at least one of a differential interference viewing method and a modulation contrast viewing method; and a second dry objective ( 15 b ) having a magnification of from 60 or higher to 100 or lower and capable of viewing by a differential interference viewing method; the first objective ( 15 a ) and the second objective ( 15 b ) being exchangeable.

Claims

exact text as granted — not AI-modified

1 - 8 . (canceled) 
     
     
         9 . A microscope system for micro-insemination, comprising:
 a transmission illumination optical system having a light source and a condenser lens;   a first dry objective having a magnification of from 20 or higher to 40 or lower and capable of viewing by at least one of a differential interference viewing method and a modulation contrast viewing method; and   a second dry objective having a magnification of from 60 or higher to 100 or lower and capable of viewing by a differential interference viewing method;   the first objective and the second objective being exchangeable.   
     
     
         10 . The microscope system for micro-insemination according to  claim 9 , characterized in that the following conditional expressions are satisfied:
   0.78≦NA&lt;1.0
       f/ 3 ≦WD&lt; 2 f,      where NA is the numerical aperture of the second objective, f is focal length thereof, and WD is working distance thereof.   
     
     
         11 . The microscope system for micro-insemination according to  claim 9 , characterized in that the following conditional expression is satisfied when viewing by the differential interference viewing method using the second objective:
   0.3λ/NA≦ S≦ 0.61λ/NA,
   where S is the shear distance in the object plane, NA is the numerical aperture of the second objective, and λ is the wavelength of the viewed light.   
     
     
         12 . The microscope system for micro-insemination according to  claim 9 , characterized in that the second objective has a correction ring for correcting aberration fluctuation due to changes in factors including temperature and cover glass thickness.

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