Transmission type screen using a fly-eye lens

Details Transmission type screen using a fly-eye lens Transmission type screen using a fly-eye lens

2007-06-26

2007-06-26

Perkey, W. B. (Department: 2851)

Optical: systems and elements

Projection screen

Unitary sheet comprising plural refracting areas

C359S460000, C359S020000, C348S059000

Reexamination Certificate

active

10980864

ABSTRACT:
A transmission type screen including a fly-eye lens having a convex shape on one side thereof and a light-shielding layer provided on an opposite side of a lens surface of the fly-eye lens and having a plurality of openings provided near each focus of lens unit cells, wherein if uniform light perpendicular to an optical axis of the lens unit cell is incident upon the lens surface, luminance on an emission side of the screen when the screen is observed from a direction inclined against the optical axis of the lens unit lens by a predetermined angle in a horizontal direction when the screen is used is larger than luminance when the screen is observed from a direction inclined by the same angle as that in the horizontal direction in a vertical direction when the screen is used.

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Patent Abstracts of Japan, Publication No. 2000-111708 dated Apr. 21, 2000, 1 pg.

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