Projection display system

Details Projection display system Projection display system

G - Physics

03

B

G03B 21/60 (2006.01)

Patent

CA 2485672

In one embodiment, a projection screen includes a diffuse reflecting polarizer that diffusively reflects light polarized in a first direction and transmits light polarized in a second direction. The projection screen may also include a second polarizer adjacent a back side of the diffuse reflecting polarizer, wherein the second polarizer is oriented to transmit light polarized in the second direction. The projection screen may appear substantially diffuse when viewed from a front side and substantially transparent when viewed from a back side.

L'invention porte sur un écran de projection comportant dans une exécution un polariseur à réflexion diffuse réfléchissant la lumière polarisée dans une première direction et transmettant la lumière polarisée dans une deuxième direction. L'écran de projection peut également comporter un deuxième polariseur, jouxtant le côté arrière du polariseur à réflexion diffuse, et orienté pour transmettre la lumière polarisée dans une deuxième direction. L'écran de projection peut paraître sensiblement diffus vu du se l'avant, et sensiblement transparent vu de l'arrière.

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