Non-interfering color viewing system using spectral...

G - Physics – 03 – B

Patent

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G03B 21/08 (2006.01) G02B 27/01 (2006.01) G09B 9/30 (2006.01) G09B 9/32 (2006.01) G02B 5/28 (2006.01) G02B 5/30 (2006.01) G02B 27/00 (2006.01)

Patent

CA 2094151

A viewing system operative to provide non-interfering color displays to two or more viewers disposed within a catadioptric projection display system. The non-interfering viewing system includes a projector subsystem 10 for generating a first image with radiant energy from a first set of color wavelengths and for generating a second image with radiant energy from a second set of color wavelengths. The first and second sets of wavelengths are spectrally multiplexed so as to include first and second red, blue and green wavelengths, respectively. A visor 32 is worn by a first viewer and includes a first triple notch filter. The first triple notch filter is adapted to transmit radiant energy of wavelengths included within the first set to the first viewer and to reject incident radiant energy of wavelengths included within the second set. A second visor 32 is worn by a second viewer and includes a second triple notch filter. The second triple notch filter is adapted to transmit radiant energy of wavelengths within the second set to the second viewer and to reject incident radiant energy of wavelengths within the first set.

L'invention est un système de visualisation servant à produire des affichages couleur distincts exempts de parasites pour deux spectateurs ou plus utilisant un dispositif d'affichage à projection catadioptrique. Le système de visualisation de l'invention comprend un sous-système de projection 10 servant à produire une première image avec de la lumière située dans un premier ensemble de longueurs d'onde, et une seconde image avec de la lumière située dans un second ensemble de longueurs d'onde. Ces deux ensembles de longueurs d'onde subissent un multiplexage spectral incorporant une première et une seconde longueur d'onde de rouge, de bleu et de vert. Le premier spectateur porte des lunettes de visionnement 32 dotées d'un premier filtre à trois bandes passantes étroites. Ce filtre est adapté pour transmettre les longueurs d'onde du premier ensemble au premier spectateur et pour bloquer les longueurs d'onde du second ensemble. Le second spectateur porte des lunettes de visionnement 32 dotées d'un second filtre à trois bandes passantes étroites. Ce filtre est adapté pour transmettre les longueurs d'onde du second ensemble au second spectateur et pour bloquer les longueurs d'onde du premier ensemble.

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