G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 27/48 (2006.01) G03H 1/32 (2006.01)
Patent
CA 2336266
A method and apparatus for converting a beam of light that is substantially coherent and has a coherence length into substantially incoherent radiation. The method has the steps of collimating the beam, delaying a first portion of the beam by a first optical delay by ballistic passage through a first cell of an optical element, and delaying each of a plurality of other portions of the beam by an optical delay different from the first optical delay by an amount exceeding the coherence length of the beam.
L'invention concerne un procédé et un appareil permettant de convertir un faisceau de lumière sensiblement cohérente et possédant une longueur de cohérence en un rayonnement sensiblement non cohérent. Le procédé consiste à collimer le faisceau, à retarder une première partie du faisceau pour un premier délai optique par un premier passage balistique à travers une première cellule d'un élément optique et à retarder chacune des autres parties du faisceau pour un délai qui diffère du premier délai optique d'une valeur supérieure à la longueur de cohérence du faisceau.
Gowling Lafleur Henderson Llp
Optimet Optical Metrology Ltd.
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