Stereo optical system pair for stereo endoscope system
AssigneeOlympus Corporation
InventorTsutomu Igarashi
Life of this patent
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Abstract
An optical system pair for a stereo endoscope is described which enables adjustment of magnification matching in the production phase with low cost and small size for the resulting stereo endoscope products. The stereo optical system pair for stereo endoscope system includes a right optical system and a left optical system, wherein one of the right and left optical systems includes a lens group which has a refractive power, and which is designed to be moveable axially with a moveable range and has a position within the moveable range at which optical magnification equals to −1. Also described are optical arrangements of a stereo endoscope incorporating the stereo optical system pair.
Claims38
A stereo optical system pair for a stereo endoscope system, comprising:
- a right optical system and a left optical system,
- wherein one of the right and left optical systems includes a lens group which has a refractive power, and which is moveable axially with a moveable range and has a position within the moveable range at which its optical magnification equals to −1.
A method of assembling a stereo endoscope, comprising:
- assembling an objective optical system pair;
- then assembling a relay optical system;
- then assembling an imaging optical system pair;
- and
- then assembling an ocular optical system pair,
- wherein one of the imaging optical system pair or the ocular optical system pair includes a stereo optical system pair, the stereo optical pair including a right optical system and a left optical system, wherein one of the right and left optical systems includes a lens group which has a refractive power, and which is moveable axially with a moveable range and has a position within the moveable range at which its optical magnification is at a value which provides a quality image and makes the shift in focus position small.
A stereo optical system pair for a stereo endoscope system, comprising:
- a right optical system and a left optical system,
- wherein one of the right and left optical systems includes a lens group which has a refractive power, and which is moveable axially with a moveable range and has a position within the moveable range at which its optical magnification equals to the value which is selected within the range of −0.8 to 1.2.
Dependencies are inferred from the claim text.