G - Physics – 03 – B
Patent
G - Physics
03
B
G03B 21/62 (2006.01)
Patent
CA 2375465
Rear projection screens include a film layer having a plurality of lenses for diverging light horizontally and vertically. The horizontal viewing angle created by the lenses may be different from the vertical viewing angle. The light may be directed by the lenses in a particular direction, so that the direction of the maximum intensity light does not lie parallel to an axis normal to the screen surface. The lens film may be combined with an isotropic light disperser, such as a bulk diffuser.
L'invention concerne des écrans de projection arrières comprenant une couche de film présentant une pluralité de lentilles pour faire diverger la lumière horizontalement et verticalement. L'angle de vue horizontal créé par les lentilles peut être différent de l'angle de vue vertical. La lumière peut être dirigée par les lentilles dans une direction particulière, de sorte que la direction de la lumière d'intensité maximale ne soit pas parallèle à l'axe normal de la surface de l'écran. La couche de film peut être combinée à un répartiteur de lumière isotrope, tel qu'un diffuseur global.
Chou Hsin-Hsin
Fleming Patrick R.
Hodapp Theodore W.
Moshrefzadeh Robert S.
Nelson John C.
3m Innovative Properties Company
Smart & Biggar
LandOfFree
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