Optical device using a polarizing beam splitter

Details Optical device using a polarizing beam splitter Optical device using a polarizing beam splitter

G - Physics

02

B

G02B 27/28 (2006.01)

Patent

CA 2446959

An optical device adapted for handling plane polarised light comprising a beamsplitter cube formed of two prisms (22A, B) having a polarising beamsplitter (PBS) arrangement located between the hypoteneuse faces of the prisms, the cube having a first pair of opposing faces forming an illumination input face and an illumination output face (22), and a second pair (26, 32) of opposing faces at which reflection means are located, wherein image-forming light is output from the output face, the image being derived from a display source (30) located at one of the other faces of the cube and the arrangement of the reflection means being such that the cube does not support an intermediate image of the display source.

Dispositif optique conçu pour traiter de la lumière polarisée sur un plan, qui comprend un cube séparateur de faisceau constitué de deux prismes (22A, B) et comportant un aménagement séparateur de faisceau (PBS) polarisant situé entre les faces d'hypoténuse des prismes. Le cube comporte une première paire de faces opposées formant une face d'entrée d'éclairement et une face (22) de sortie d'éclairement, et une deuxième paire (26, 32) de faces opposées comprenant des moyens de réflexion. La lumière formatrice d'image est produite par la face de sortie, l'image étant dérivée d'une source (30) d'affichage située sur une face de la deuxième paire de faces du cube ; et l'aménagement des moyens de réflexion est tel que le cube ne reçoit pas d'image intermédiaire de la source d'affichage.

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