EP 1468244 A2 20041020 - INTERFEROMETRIC OPTICAL SYSTEM
Title (en)
INTERFEROMETRIC OPTICAL SYSTEM
Title (de)
INTERFEROMETRISCHE OPTISCHE ANORDNUNG
Title (fr)
SYSTEME OPTIQUE INTERFEROMETRIQUE
Publication
Application
Priority
- DE 10202120 A 20020121
- EP 0300568 W 20030121
Abstract (en)
[origin: WO03060422A2] The invention relates to an interferometric optical device with spectral dispersion comprising a light source, elements for generating a phase shift, elements for measuring the intensity of the interference signals, elements for selectively measuring the intensity of the interference signals and elements for determining the phase angle and/or a relative phase shift of the intensity of the interference signals. According to the invention, the elements for generating a phase shift between components with a different polarisation direction in at least one of the branches of the interferometer comprise a diffraction grating. The elements for selectively measuring the intensity of the interference signal in accordance with the polarisation also permit the determination of the respective intensity for the TE and TM components of the interference signal, based on the co-ordinate system of the diffraction grating.
IPC 1-7
IPC 8 full level
G01B 9/02 (2006.01)
CPC (source: EP US)
G01B 9/02022 (2013.01 - EP US); G01B 9/02081 (2013.01 - EP US); G01B 11/22 (2013.01 - EP US); G01B 2290/30 (2013.01 - EP US); G01B 2290/70 (2013.01 - EP US)
Citation (examination)
GIOVANNINI H. ET AL: "Interefrometric configuration based on a grating interferometer for the measurement of the phase between TE and TM polarizations after diffraction by gratings", OPTICS LETTERS, OSA, OPTICAL SOCIETY OF AMERICA, WASHINGTON, DC, US, vol. 20, no. 21, 1 November 1995 (1995-11-01), pages 2255 - 2257, XP002444900, ISSN: 0146-9592
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR
DOCDB simple family (publication)
WO 03060422 A2 20030724; WO 03060422 A3 20040205; AU 2003202583 A1 20030730; AU 2003202583 A8 20030730; DE 10202120 A1 20030731; EP 1468244 A2 20041020; JP 2005515414 A 20050526; US 2005117169 A1 20050602; US 7161683 B2 20070109
DOCDB simple family (application)
EP 0300568 W 20030121; AU 2003202583 A 20030121; DE 10202120 A 20020121; EP 03701534 A 20030121; JP 2003560470 A 20030121; US 50219505 A 20050207