G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 5/30 (2006.01) G02B 27/18 (2006.01) G03F 7/20 (2006.01)
Patent
CA 2239785
A polariser (14) for polarising by reflection, in particular for polarising ultraviolet light when wide apertures are used, is provided with transparent plane-parallel plates each of which is inclined at an angle to the light entering parallel to the optical axis (10). To improve transmission of p-polarised light and reduce transmision of s-polarised light, it is proposed that a number of plane-parallel plates should be inclined in the same direction relative to the optical axis (10) and arranged in a stack, the angle (17) of the incident light relative to the perpendicular (16) to the plate in question being within the Brewster angle range.
L'invention concerne un polariseur (14) destiné à la polarisation par réflexion, notamment la polarisation de la lumière ultraviolette pour de grandes ouvertures. Le polariseur possède des lames transparentes à faces parallèles, dont chacune est disposée de manière à former un angle avec la lumière incidente qui est parallèle à l'axe optique (10). Pour améliorer la transmission de la polarisation P et réduire la transmission de la polarisation S, plusieurs lames à faces parallèles sont inclinées dans la même direction par rapport à l'axe optique (10) et sont empilées. L'angle (17) que forme la lumière incidente avec la normale (16) de chaque lame se situe dans la zone de l'angle d'incidence brewsterienne.
Lullau Friedrich
Mayer Claus
Gowling Lafleur Henderson Llp
Lullau Friedrich
Xeikon Ip Bv
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