EP 1086365 A1 20010328 - POLARIMETRIC METHOD FOR DETERMINING THE (MAIN-)OSCILLATION PLANE OF POLARISED LIGHT ON ABOUT 0.1 mo AND MINIATURISABLE DEVICE FOR ITS IMPLEMENTATION
Title (en)
POLARIMETRIC METHOD FOR DETERMINING THE (MAIN-)OSCILLATION PLANE OF POLARISED LIGHT ON ABOUT 0.1 mo AND MINIATURISABLE DEVICE FOR ITS IMPLEMENTATION
Title (de)
POLARIMETRISCHES VERFAHREN ZUR BESTIMMUNG DER (HAUPT-) SCHWINGUNGSEBENE POLARISIERTEN LICHTS AUF ETWA 0,1 mo UND MINIATURISIERBARE VORRICHTUNG ZU SEINER DURCHFÜHRUNG
Title (fr)
PROCEDE POLARIMETRIQUE POUR LA DETERMINATION DU PLAN D'OSCILLATION (PRINCIPAL) DE LA LUMIERE POLARISEE SUR ENVIRON 0,1 mo, ET DISPOSITIF MINIATURISABLE POUR SA MISE EN OEUVRE
Publication
Application
Priority
- DE 19826294 A 19980612
- EP 9904015 W 19990611
Abstract (en)
[origin: WO9966309A1] The invention relates to a method and a device for accurate determination of the oscillation plane of polarised light. According to said method, the light of a light source (1) is polarised by means of a polarisation filter (2) having an adjustment angle theta 0 determined relatively to the first reference plane, i.e. the incidence plane on the reflecting surface (4). The polarised beam (12) penetrates the object to be measured in the measuring chamber (3) and the rotation angle varies by a low angular value theta MG. The sum of theta 0 and theta MG is equal to the rotation angle theta e with which the beam (13) exiting the measuring chamber is partially reflected on the surface of an optically thicker medium (4). The partially reflected beam is then decomposed into two partial beams (15a: extraordinary beam, 15b: ordinary beam) in a polarisation prism (5) having a reference plane, i.e. the oscillation plane of the ordinary beam, with an adjustment angle ( theta *) determined relatively to the first reference plane, the two partial beams having oscillation planes which are exactly perpendicular to one another. The intensities I0 et Ia of the two partial beams are determined photometrically by means of two detectors (6a, 6b) and the ratio (Q) of the measured intensities is formed (ratio builder: 8).
IPC 1-7
IPC 8 full level
A61B 5/145 (2006.01); A61B 5/1455 (2006.01); G01J 4/04 (2006.01); G01N 21/21 (2006.01)
CPC (source: EP US)
G01J 4/04 (2013.01 - EP US)
Citation (search report)
See references of WO 9966309A1
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9966309 A1 19991223; AU 4607499 A 20000105; CN 1305586 A 20010725; DE 19826294 C1 20000210; EP 1086365 A1 20010328; JP 2002518669 A 20020625; US 6577393 B1 20030610
DOCDB simple family (application)
EP 9904015 W 19990611; AU 4607499 A 19990611; CN 99807278 A 19990611; DE 19826294 A 19980612; EP 99929174 A 19990611; JP 2000555078 A 19990611; US 71938801 A 20010323