Television display system for modulating projected beams'...

H - Electricity – 04 – N

Patent

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Details

H04N 9/31 (2006.01) H04N 5/74 (2006.01)

Patent

CA 2070771

A television display apparatus (10) wherein a white light source (12) emits a beam onto a plurality of dichroic mirrors (20) which split the beam into three beams of the primary colors, then reflects the three primary beams onto three deformable reflective surfaces (44), which again reflect the beams through slits (36) in a non- reflective surface (34), thereby modulating the intensity of the beams. The amount of light passing through the slits (36) is horizontally scanned by one surface of a rotating polygonal mirror (54), then passes through collimating and projection lenses and onto a screen.

Un appareil d'affichage de télévision (10) dans lequel une source de lumière blanche (12) émet un faisceau sur une pluralité de miroirs dichroïques (20), lesquels subdivisent le faisceau en trois faisceaux des couleurs primaires, renvoient ensuite les trois faisceaux primaires sur trois surfaces réfléchissantes déformables (44), lesquelles à nouveau renvoient les faisceaux par des fentes (36) sur une surface non réfléchissante (34), modulant ainsi l'intensité des faisceaux. La quantité de lumière passant par les fentes (36) est balayée horizontalement par une surface d'un miroir polygonal rotatif (54), puis elle passe dans des lentilles de collimation et de projection et tombe sur un écran.

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