Objective lens system for endoscopes

Details Objective lens system for endoscopes Objective lens system for endoscopes

1982-11-04

1985-01-15

Corbin, John K.

350450, G02B 934, G02B 1304

Patent

active

044935374

ABSTRACT:
An objective lens system for endoscopes comprising a first negative meniscus lens component, a second positive meniscus lens component, a third biconvex lens component and a fourth positive cemented doublet component consisting of a positive lens element and a negative lens element, said lens system having a super-wide angle and favorably corrected aberrations, especially spherical aberration and lateral chromatic aberration.

REFERENCES:
patent: 4042295 (1977-08-01), Yamashita et al.
patent: 4059344 (1977-11-01), Yamasita
patent: 4111529 (1978-09-01), Yamashita

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