Autostereoscopic video device

H - Electricity – 04 – N

Patent

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Details

H04N 13/02 (2006.01) G02B 27/22 (2006.01) G03B 35/00 (2006.01) H04N 13/00 (2006.01) H04N 15/00 (2006.01)

Patent

CA 2161262

An autostereoscopic video picture taking device having a single camera and using a cylindrical lens system comprises, successively, an entrance objective (L1, L2); a lens system (20), its focal length being such that, for an image surface equal to the pitch (p) of the lenses which compose it, the image of the entrance aperture diaphragm of the telecentric objective (L1, L2) has a nominal width equal to said pitch; a transfer lens (L3, L4) with a magnification less than one; an image sensor (22). The transfer lens (L3, L4) reflects the rays from the lens system (20) to the image sensor (22), the image (21) from the lens system (20) in the transfer lens (L3, L4) being such that the pitch (p) of the lenses in the lens system (20) corresponds to an integral number of image points (pixels) of the image sensor (22).

La présente invention pourvoit un appareil de projection pour la projection des images stéréoscopiques. L'appareil comprend une pluralité de projecteurs vidéo dont chacun projette une image élémentaire représentant un point de vue respectif desdites images stéréoscopiques sur un plan de diffusion. L'appareil comprend également un premier réseau cylindrique constitué d'un réseau lenticulaire disposé en amont du plan diffusant et un deuxième réseau cylindrique disposé en aval du plan de diffusion. L'angle d'inclinaison des réseaux cylindriques est inférieur ou égal à la moitié de la taille d'un point de l'image (pixel) sur l'écran. L'angle d'inclinaison du deuxième réseau cylindrique est égal à ou sensiblement inférieur que l'angle d'inclinaison du premier réseau cylindrique.

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