Endoscope objective optical system

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United States of America Patent

PATENT NO 9372336
APP PUB NO 20140155694A1
SERIAL NO

14100257

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Provided is an endoscope objective optical system including, in order from an object side, an aperture stop, a front group having positive refractive power, and a rear group having positive refractive power, in which the rear group is formed by joining a single lens having positive refractive power and a single lens having negative refractive power and is joined to an imaging device; a joining surface between the single lenses has positive refractive power; and the endoscope objective optical system satisfies following Conditional Expression (1):

description='In-line Formulae' end='lead'0.15<fF/fR<0.5,  (1)description='In-line Formulae' end='tail'

where fF indicates a focal length of the front group, and fR indicates a focal length of the rear group.

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Patent Owner(s)

Patent OwnerAddress
OLYMPUS CORPORATIONTOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Murata, Keiji Tokyo, JP 18 101

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