Encoder for optical coherence tomography scanner

Patent metadata

Field	Value
Publication number	US-10684115-B2
Application number	US-201716067337-A
Country	US
Kind code	B2
Filing date	Jan 20, 2017
Priority date	Jan 22, 2016
Publication date	Jun 16, 2020
Grant date	Jun 16, 2020

Abstract

Disclosed is an optical coherence tomography scanner and a method for recording sub-surface scans of an object, wherein a position encoder is arranged in the path of the probing beam of an interferometric system. The encoder pattern is detected in a sequence of A scans at generated for different probing beam positions on the scanned object, the probing beam position and/or inclination for at least one A scan of said sequence of A scans is deducing based on the detected encoder pattern, and the sub-surface scan of the object is generated based on the sequence of A scans taking into account the deduced probing beam position and/or inclination.

First claim

The invention claimed is:

1. An optical coherence tomography scanner for recording sub-surface scans of an object, wherein the optical coherence tomography scanner comprises:
an interferometric system configured for projecting a probing beam onto the scanned object and recording sub-surface data at different probing beam positions on the scanned object;
a position encoder arranged in the path of the probing beam, where the encoder comprises a pattern at least partly formed by a…

Assignees

• 3Shape As

Inventors

• Kumar Ashwani
• Nair Deepak Vijayakumar
• Ask Erik
• Hollenbeck Karl-Josef

Classifications

• G01D5/34761

  Physics · mapped topic

• G01B9/02072

  Physics · mapped topic

• G06T2207/10101

  Physics · mapped topic

• G01B9/02091 Primary

  Physics · mapped topic