Microscope objective lens

Details Microscope objective lens Microscope objective lens

1983-11-15

1986-05-13

Corbin, John K.

G02B 2102

Patent

active

045882649

ABSTRACT:
A microscope objective lens of medium or high magnification having a great working distance and yet having an excellent imaging performance comprises, in succession from the object side, a first lens group of positive refractive power for converting a light flux from an object into a convergent light flux, the first lens group having a positive meniscus lens component having its concave surface facing the object side and a cemented lens component, a second lens group having a cemented lens component of small refractive power disposed in the convergent light flux, and a third lens group having a meniscus lens component having its convex surface facing the object side and a succeeding negative lens component. The objective lens satisfies the following conditions:

REFERENCES:
patent: 4261654 (1981-04-01), Rybicki
patent: 4403835 (1983-09-01), Ushida

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