Wide viewing angle screen and projection television...

Details Wide viewing angle screen and projection television... Wide viewing angle screen and projection television...

2006-11-21

2006-11-21

Mahoney, Christopher (Department: 2851)

Optical: systems and elements

Projection screen

Unitary sheet comprising plural refracting areas

C359S623000

Reexamination Certificate

active

07139124

ABSTRACT:
A screen having a wide viewing angle and a projection television including the screen are provided. The screen includes a Fresnel lens sheet for converting incident light into near-parallel light, a lenticular lens sheet including a horizontal array of vertical cylindrical lenses for horizontally emitting light, in which vertical black stripes are formed in parallel on connection portions for the cylindrical lenses, and a light diffusion film including a vertical array of horizontal cylindrical lenses for vertically emitting light, in which horizontal black stripes are formed in parallel on connection portions for the cylindrical lenses. In particular, the screen has a wide vertical viewing angle and a high contrast ratio, thereby providing a high definition image.

REFERENCES:
patent: 2618198 (1952-11-01), Luboshez
patent: 4923280 (1990-05-01), Clausen et al.
patent: 5066099 (1991-11-01), Yoshida et al.
patent: RE33795 (1992-01-01), Ogino
patent: 5513036 (1996-04-01), Watanabe et al.
patent: 5615045 (1997-03-01), Takuma et al.
patent: 6124969 (2000-09-01), Funazaki et al.
patent: 6822792 (2004-11-01), Goto
patent: 6862139 (2005-03-01), Chang et al.
patent: 2005/0117212 (2005-06-01), Kumagai et al.
patent: 2000-338607 (2000-12-01), None
patent: 96-015507 (1996-11-01), None
patent: 1999-0072845 (1999-09-01), None
patent: 2000-0015228 (2000-03-01), None

Affiliated with

Also associated with

Rating

Wide viewing angle screen and projection television... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wide viewing angle screen and projection television..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wide viewing angle screen and projection television... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3664805