Transmission type screen and method of manufacturing the same

Details Transmission type screen and method of manufacturing the same Transmission type screen and method of manufacturing the same

1991-03-28

1991-10-22

Wintercorn, Richard A.

Optical: systems and elements

Projection screen

Unitary sheet comprising plural refracting areas

359443, G03B 2160

Patent

active

050589890

ABSTRACT:
A transmission type screen having a screen body constituted by at least one plastic sheet formed of a multiplicity of transparent plastic strands arranged in the shape of a sheet, each the strands being welded together at outer surfaces thereof. Each of the transparent strand may have a main portion and another portion different from the main portion in terms of optical effects. This transmission type screen is manfactured by spinning off the transparent strands from a spinning nozzle while aligning the strands; welding each adjacent over of the strands to form a sheet; and forming a screen body from at least one sheet obtained in this manner.

REFERENCES:
patent: 1824353 (1931-09-01), Jensen
patent: 2016185 (1935-10-01), Thomson
patent: 2028496 (1936-01-01), Chiti
patent: 3561840 (1971-02-01), Seki et al.
patent: 4006965 (1977-02-01), Takada et al.
patent: 4566756 (1986-01-01), Heijnemans

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