The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 05, 2019
Filed:
Dec. 14, 2016
Canon Usa Inc., Melville, NY (US);
Zhuo Wang, Middleton, MA (US);
Canon U.S.A., Inc., Melville, NY (US);
Abstract
A three-dimensional (3D) endoscope is provided. The 3D endoscope comprises a probe; a positioning device to locate a tip of the probe at a first position O and a second position O'; a light guide extending through the probe and configured to guide a light propagating through the probe configured to project on a surface a first light beam from the tip at the first position and a second light beam from the tip at the second position; a detector configured to detect the first light beam reflected from the surface and the second light beam reflected from the surface; and an image processor configured to determine a first distance R between the first position and the surface based on a position difference between the first and second positions, a first deflection angle θ of the first light beam deflected from the probe at the first position and a second deflection angle θ′ of the second light beam deflected from the probe; obtain image data carried by the first and second light beams detected by the detector; and obtain a 3D image based, the first distance R, the first deflection angle θ, and the first rotation angle φ associated with each pixel on the image.