Objective optical system for endoscopes

Details Objective optical system for endoscopes Objective optical system for endoscopes

1995-04-28

1997-04-08

Epps, Georgia Y.

Optical: systems and elements

Lens

Microscope objective

359717, 359740, 359793, G02B 2102, G02B 302, G02B 900

Patent

active

056193807

ABSTRACT:
An objective optical system for endoscopes consisting, in order from the object side, of a front lens unit having a negative refractive power, and a rear lens unit which is composed of a single lens component and has a positive refractive power. This objective optical system comprises a small number of lens components, has favorably corrected aberrations and satisfies the following condition:

REFERENCES:
patent: 4354734 (1982-10-01), Nakahashi
patent: 4858002 (1989-08-01), Zobel
patent: 5223982 (1993-06-01), Suzuki et al.

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