Objective lens design for miniature endoscope

Details Objective lens design for miniature endoscope Objective lens design for miniature endoscope

2011-01-11

2011-01-11

Martinez, Joseph (Department: 2873)

Optical: systems and elements

Lens

Reverse telephoto

C359S749000, C359S754000

Reexamination Certificate

active

07869140

ABSTRACT:
An endoscope objective lens system design is disclosed, generally comprising a first lens group having overall negative refractive power, a second lens group having overall positive refractive power, and an aperture diaphragm disposed between the first and second lens groups wherein the first lens group includes a plano-concave lens with its concave surface facing the objective end of the endoscope.

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Extended European Search Report, EP 08006212, Oct. 9, 2008, 6 pages.

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