Title:
METHOD AND DEVICES FOR MEASURING LENGTH
Document Type and Number:
WIPO Patent Application WO/2012/076654
Kind Code:
A3
Abstract:
Methods and devices for measuring length are made available. In this context, a light beam (10) is detected after passing at least once through a section to be measured, a phase angle of the detected light beam is determined through comparison with a reference (12), a length of the section is determined as a function of the phase angle, and correction is carried out as a function of an amplitude of the detected light beam.
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Inventors:
SPRUCK BERND (DE)
Application Number:
PCT/EP2011/072208
Publication Date:
August 09, 2012
Filing Date:
December 08, 2011
Export Citation:
Assignee:
ZEISS CARL AG (DE)
SPRUCK BERND (DE)
SPRUCK BERND (DE)
International Classes:
G01S13/10; G01S13/36
Foreign References:
| EP1219973A2 | 2002-07-03 | |||
| EP0933649A2 | 1999-08-04 | |||
| EP0010064A1 | 1980-04-16 |
Other References:
TAYLOR J ET AL: "CHARACTERIZATION OF NOISE PROPERTIES IN PHOTODETECTORS: A STEP TOWARD ULTRA-LOW PHASE NOISE MICROWAVES", 41ST ANNUAL PRECISE TIME AND TIME INTERVAL (PTTI) SYSTEMS AND APPLICATIONS MEETING,, vol. 41, 16 November 2009 (2009-11-16), pages 339 - 348, XP007920182
Attorney, Agent or Firm:
STICHT, Andreas (München, DE)
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