Tracking assisted optical procedure
US6736508B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2002 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Jul 26, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B2290/65
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
One embodiment of the present invention is an optical coherence tomography (“OCT”) application apparatus that performs an OCT application on an object. The OCT application apparatus includes: (a) an OCT scanning apparatus which outputs a scanning beam of OCT scanning radiation; and (b) an active tracking system that generates and scans a tracking beam of tracking radiation in a predetermined pattern over a region; wherein the active tracking system includes an analysis system that: (i) when the object is at a calibration position, scans the tracking beam about an irregular reference tracking feature in the region, and detects a calibration retro-reflected tracking beam to form calibration information; (ii) after the calibration information is formed, scans the tracking beam over the region, detects a displacement retro-reflected tracking beam, and analyzes the detected displacement retro-reflected tracking beam together with the calibration information to detect movement of the object; (iii) generates tracking signals; and (iv) applies the tracking signals to a tracking mechanism system to cause the tracking beam and the scanning beam to follow movement of the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.