Interferometric arrangement for determining the transit time of light in a sample

• US 20040150829A1
• Filed: 03/31/2004
• Published: 08/05/2004
• Est. Priority Date: 04/17/2001
• Status: Abandoned Application

• Current Assignee: Medizinisches Laserzentrum Lübeck GmbH
• Original Assignee: Medizinisches Laserzentrum Lübeck GmbH
• Inventors: Wosnitza, Martin, Koch, Peter
• Application Number:
  US10/475,040
• Publication Number:
  US 20040150829A1
• Time in Patent Office: Days
• US Class Current: 356/477
• CPC Class Codes: G01B 9/02041 characterised by particular imaging or detection techniques
• CPC Class Codes: G01B 9/02057 by using common path configuration, i.e. reference and object path almost entirely overlapping
• CPC Class Codes: G01B 9/02091 Tomographic interferometers, e.g. based on optical coherence
• CPC Class Codes: G01B 9/02097 Self-interferometers
• CPC Class Codes: G01J 9/02 by interferometric methods using interferometers for measuring optically the linear dimensions of objects G01B9/02
• CPC Class Codes: G01N 21/4795 spatially resolved investigating of object in scattering medium in vivo A61B

Abstract

An interferometric arrangement device is used for determining the transit time distribution of light in the sample branch of an interferometer in which the light returning from the reference branch and the sample branch is superimposed, and by means of the intensity distribution of the superimposed light, a transit time distribution of the light in the sample branch is determined. Evaluation takes place by means of the spatial intensity distribution of the superimposed light. The sample and reference light is guided from the sample location to the evaluating device in a common fibre.

Claims

1. An interferometric arrangement for determining the transit time distribution of light in a sample having a light source whose light is supplied to a sample to be examined, in which the light returning from the sample is supplied by means of a light waveguide to a detector with downstream evaluating device, and characterized in that the light returning from the sample and guided in the light waveguide is split into two parts which are superimposed and supplied to the optical detector.