Lenticular lens sheet and projection screen

Details Lenticular lens sheet and projection screen Lenticular lens sheet and projection screen

2006-03-14

2006-03-14

Perkey, W. B. (Department: 2851)

Optical: systems and elements

Projection screen

Unitary sheet comprising plural refracting areas

C359S457000, C359S459000, C359S454000, C359S619000

Reexamination Certificate

active

07012743

ABSTRACT:
A high contrast a lenticular lens sheet that improves the brightness of an image and the angle of visibility. The width A, between the lens elements on a light-emission side and a side wall of a black stripe portion is made to be 15 μm or less. P represents the pitch of the lens element and H represents the width of the black stripe portion as viewed n a cross section perpendicular to the lens element, the difference F in height between the black stripe portion and the lens element is set to have a range that is expressed by the inequality: 0.098 P≦F≦(P-H)/2 tan(π/3). Simultaneously, the width B as measured from an apex portion of the black stripe portion in regard to a colored portion on a side wall of the black stripe portion is set to have a range that is expressed by the inequality: 0.30 F≦B≦0.89 F.

REFERENCES:
patent: 4919515 (1990-04-01), Hasegawa et al.
patent: 5042908 (1991-08-01), Ajima
patent: 5426531 (1995-06-01), Tsukagoshi
patent: 5611611 (1997-03-01), Ogino et al.
patent: 5870225 (1999-02-01), Ogino et al.
patent: 6046847 (2000-04-01), Takahashi
patent: 6157491 (2000-12-01), Watanabe et al.
patent: 6169633 (2001-01-01), Watanabe
patent: 6185038 (2001-02-01), Yamaguchi et al.
patent: 6421181 (2002-07-01), Yoshida et al.
patent: 6665118 (2003-12-01), Yamaguchi et al.
patent: 2002/0044360 (2002-04-01), Yoshida et al.
patent: 10-254064 (1998-12-01), None
patent: 11072849 (1999-03-01), None

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