Light control sheet, surface light source unit and liquid crysta

Details Light control sheet, surface light source unit and liquid crysta Light control sheet, surface light source unit and liquid crysta

1996-10-09

1999-04-06

Cariaso, Alan

Illumination

Revolving

362330, 362339, 385146, F21V 800

Patent

active

058907912

ABSTRACT:
A light control sheet for receiving a light incident on one surface thereof and for emitting the received light from the other surface thereof, includes plural prisms which is provided at least one of surfaces of the sheet. Each of the prisms has a generatrix in parallel to each other, and has two side surfaces formed on both sides with respect to a plane surface which includes the generatrix and is perpendicular to the light control sheet. The two side surfaces have asymmetrical shapes each other with respect to the plane surface, and at least one of the two side surfaces is nonplanar.

REFERENCES:
patent: 3716710 (1973-02-01), Clostermann et al.
patent: 5032963 (1991-07-01), Granstrom
patent: 5303322 (1994-04-01), Winston et al.
patent: 5506929 (1996-04-01), Tai et al.

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