Image-forming lens system

Details Image-forming lens system Image-forming lens system

1982-05-25

1985-01-01

Corbin, John K.

350474, 350477, G02B 912

Patent

active

044913940

ABSTRACT:
An image forming lens system comprising a front lens group having a positive refractive power and consisting of a positive lens component and a negative lens component or consisting of a positive lens component and a cemented lens component consisting of a positive lens element and a negative lens element cemented with each other, and a rear lens group having a negative refractive power and being a single lens component or a cemented lens component consisting of a negative lens element and a positive lens element cemented with each other or consisting of a negative lens element and a positive lens element separated from each other. The entire lens system has a positive power and satisfies the conditions necessary for a microscopic objective and can relay an image without impairing the image performance of the objective.

REFERENCES:
patent: 2440088 (1948-04-01), Grey
patent: 3176583 (1965-04-01), Klein
patent: 3355234 (1967-11-01), Muller
patent: 3471218 (1969-10-01), Benford et al.

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