Lenticular sheet, rear-projection screen or TV using the same, a

Details Lenticular sheet, rear-projection screen or TV using the same, a Lenticular sheet, rear-projection screen or TV using the same, a

1996-10-24

1999-02-09

Malley, Daniel P.

Optical: systems and elements

Projection screen

Unitary sheet comprising plural refracting areas

359455, G03R 2756

Patent

active

058702245

ABSTRACT:
The present invention provides a lenticular sheet in which cylindrical lens parts including a radiation curable resin are formed on one side of a transparent support, and at least a light-diffusing layer and light-blocking stripes are formed on the flat surface located on the opposite side of said sheet. Cylindrical lens parts with a fine pitch of 0.3 mm or less can be obtained; furthermore, finely pitched light-blocking stripes can be accurately formed in the desired positions.
A projection screen constructed by combining the aforementioned lenticular sheet with a Fresnel lens sheet is ideally suited for viewing a liquid crystal projection TV with a high image definition.

REFERENCES:
patent: 4165154 (1979-08-01), Takahashi
patent: 4408837 (1983-10-01), Kozaki et al.
patent: 4666248 (1987-05-01), van de Ven
patent: 4721361 (1988-01-01), Van De Ven
patent: 5066099 (1991-11-01), Yoshida et al.
patent: 5184224 (1993-02-01), Mtani et al.
patent: 5191472 (1993-03-01), Kurematsu et al.
patent: 5668662 (1997-09-01), Magocs et al.
Article by Law et al., entitled "Projection Screens for Home Television Receivers" published by Journal of the Optical Society of America, vol. 38, No. 6, Jun. 1948, pp. 497-502.
Background material entitled "Projection TV Systems," pp. 4-10-4-14.

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