Screen of projector

Details Screen of projector Screen of projector

1998-10-26

2000-05-09

Epps, Georgia

Optical: systems and elements

Projection screen

Unitary sheet comprising plural refracting areas

359443, 359455, 359619, G03B 2160, G03B 2156, G02B 2710

Patent

active

060611782

ABSTRACT:
A projector screen is provided with a Fresnel lens for collimating lights projected from a projection lens provided in a projection device. A lenticular lens having a plurality of pillar lens elements successively arranged in parallel forms an image from the collimated lights projected by the Fresnel lens and spreads the image. A protection panel is installed on the front surface of the lenticular lens for protecting the lenticular lens. Also, a plurality of parallel spreading units is formed along the central axis of each lens element at the contact portion of the lenticular lens and the protection panel for providing a wide viewing angle of the image. The surface of the lenticular lens opposing the protection panel is flat so as to adhere to the protection panel.

REFERENCES:
patent: 3832032 (1974-08-01), Shimada
patent: 4525029 (1985-06-01), Inoue et al.
patent: 4979801 (1990-12-01), Park
patent: 5296922 (1994-03-01), Mitani et al.
patent: 5513037 (1996-04-01), Yoshida et al.
patent: 5581407 (1996-12-01), Mitani et al.
patent: 5724182 (1998-03-01), Mitani et al.
patent: 5745288 (1998-04-01), Miyata et al.

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