Optical system for stereoscopic rigid endoscope

Details Optical system for stereoscopic rigid endoscope Optical system for stereoscopic rigid endoscope

2005-01-14

2008-08-12

Leubecker, John P. (Department: 3739)

Surgery

Endoscope

Having imaging and illumination means

C600S111000, C348S045000, C348S058000

Reexamination Certificate

active

07410463

ABSTRACT:
An optical system for stereoscopic rigid endoscope is provided with first and second objective optical systems arranged to have a predetermined clearance therebetween and an optical path combining system that polarizes light passed through the first and second objective optical systems in directions perpendicular to each other. The optical path combining system parallelly shifts the optical axes of the first and second objective optical systems so that they coincide with each other. The shifting directions of the optical axes form an angle less than 90 degrees. A relaying optical system is provided inside the insertion unit of the endoscope. An optical axis of the relaying optical system is coaxial with the combined optical axes. An optical image separating system separates the light passed through the relaying optical system into first and second components that passed through the first and second objective optical systems and polarized by the optical path combining system, respectively.

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English Language Abstract of JP5-341207.

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