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US 9,068,824 B2Granted
Stereoscopic endoscope for measuring a three dimensional surface
AssigneeNaviswiss AG
InventorsCharles Findeisen, Bruno Knobel, Christof Ballweg
Life of this patent
Estimating the term…
Abstract
An endoscope having two entry lenses, which are arranged spaced from each other and the fields of view of which overlap, and having guiding devices. The entry lenses are spaced so far apart from each other that the outer edges thereof protrude beyond the cross-sectional area of the guiding devices, and a lens displacing the axis beam is inserted between one entry lens and the guiding devices. A method for the use of the endoscope.
Claims9
A medical stereoscopic endoscope for measuring a three dimensional surface of an object, comprising:
- a tube;
- two entry lenses, which are arranged spaced from each other and the fields of view of which overlap;
- guiding devices disposed in the tube for rotation and translation of the entry lenses relative to the tube, between a first position wherein the entry lenses are spaced apart by a distance so that that outer edges of the entry lenses protrude over the cross-sectional surface of the tube and a second position wherein the entry lenses are spaced apart by a distance so that outer edges of the entry lenses do not protrude over the cross-sectional surface of the tube;
- an optical displacement element that displaces the axial beam being inserted between an entry lens and the guiding devices, wherein for optical measurements, the entry lenses can be disposed at a defined variable distance from each other by means of mechanical devices integrated into the guiding devices, the entry lenses being positioned by rotating, so that the spacing between the optical axes of the entry lenses is adjustable in a defined manner by means of the devices;
- and
- an illumination device disposed in the tube for illuminating the fields of view of the entry lenses with structured light and with illuminating light to illuminate an observed structure with a pattern of the structured light and with the illuminating light,
- wherein the guiding devices are rotatable so that the entry lenses are positioned over the illumination device.
4 more elements
An endoscope comprising:
- a tube;
- two light guides disposed in the tube, each light guide having an entry lenses, the light guides being configured so that the entry lenses are spaced from each other and have fields of view which overlap;
- an optical displacement element inserted between an entry lens and the light guides for displacing light travelling along a light guide so that the light continues to travel parallel in an initial direction of travel and along the light guide;
- the light guides being positioned in the tube so that the tube receives the light guides so that the light guides can be rotated and displaced along their lengths, relative to the tube, the entry lenses being spaced apart by a distance so that outer edges of the entry lenses protrude over the cross-sectional surface of the endoscope and the optical displacement element, wherein for optical measurement, the entry lenses can be disposed at a defined variable distance from each other so that the spacing between the optical axes of the entry lenses is adjustable;
- and
- an illumination device disposed in the tube for illuminating the fields of view of the entry lenses with structured light and with illuminating light to illuminate an observed structure with a pattern of the structured light and with the illuminating light;
- the light guides being rotatable so that the entry lenses are positioned over the illumination device.
4 more elements
Dependencies are inferred from the claim text.