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US 9,433,341 B2Granted
Compensated relays for reducing number of elements in rod lens endoscopes
AssigneeKARL STORZ Imaging, Inc.
InventorGeorge E. Duckett, III
Life of this patent
Estimating the term…
Abstract
An endoscope and optical system for an endoscope having rod lenses and correction lens groups where the number of relay lens systems is greater than the number of correction lens groups in the endoscope and optical system of the endoscope.
Claims20
An endoscope comprising:
- a shaft comprising a proximal end and a distal end and a longitudinal axis spanning the proximal end and the distal end;
- an optical system disposed in the shaft, the optical system including
- an objective lens system, and
- a first relay lens system, the first relay lens system having
- at least two rod lenses arranged in a series, each of the at least two rod lenses a singlet lens, and
- one doublet correction lens located between the at least two rod lenses and no other correction lens in the first relay lens system;
- and
- a plurality of additional relay lens pairs each having two symmetric singlet rod lenses, the plurality of additional relay lens pairs arranged in series with the first relay lens system, such that the number of additional relay lens pairs is greater than the number of relay lens systems that have a correction lens group.
5 more elements
An optical system for an endoscope comprising:
- a first relay lens system, the first relay lens system having
- at least two rod lenses arranged in a series, each of the at least two rod lenses a singlet lens, and
- one doublet correction lens located between the at least two rod lenses and no other correction lens in the first relay lens system;
- and
- a plurality of additional relay lens pairs each having two symmetric singlet rod lenses arranged in a series and no correction lens group, so that the number of additional relay lens pairs is greater than the number of relay lens systems that have a correction lens group.
2 more elements
Two or more relay lens systems for an optical system of an endoscope comprising:
- a first relay lens system comprising
- at least two rod lenses arranged in a series, each of the at least two rod lenses a singlet lens, and
- one doublet correction lens located between the at least two rod lenses and no other correction lens in the first relay lens system;
- and
- a plurality of additional relay lens pairs each having two symmetric singlet rod lenses arranged in a series, so that the number of additional relay lens pairs is greater than the number of relay lens systems that have a correction lens group.
2 more elements
Dependencies are inferred from the claim text.