Rear projection apparatus

Details Rear projection apparatus Rear projection apparatus

1981-10-05

1984-02-14

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 931

Patent

active

044320108

ABSTRACT:
A rear projection apparatus for displaying a color image including red, green and blue color image sources located horizontally to each other in this order for producing respective color images of different colors. Projection lenses are located respectively in front of the image sources for projecting light flux of the respective image sources along converging optical paths, and a screen is located at convergent points of the projected light fluxes. The screen includes a light-transmitting lenticular sheet having an input surface and an exit surface wherein the input surface is constituted by horizontally diffusing lenticular profiles having a ratio of a lenticulated depth X.sub.v to a close-axis-curvature radius R.sub.l (X.sub.v /R.sub.l) which is within the range 0.5 to 1.8, with the profiles being prolonged along the optical axis and constituting aspherical input lenticular lenses.

REFERENCES:
patent: 4054907 (1977-10-01), Itoh
patent: 4219843 (1980-08-01), Tarahashi

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