Patent
1988-10-18
1990-05-01
Wintercorn, Richard A.
G03B 2160
Patent
active
049213300
ABSTRACT:
A video projector includes a cabinet having a scren mounting opening, a projector unit housed within the cabinet, and a generally rectangular composite projection screen secured to the cabinet to cover the screen mounting opening and a picture is projected from the projector unit onto the screen. The composite screen includes a laminar structure of a Fresnel lens plate and a lenticular lens plate. The lenticular lens plate has a height smaller than the height of the Fresnel lens plate and an upper edge connected by adhesive tape with an upper edge of the Fresnel lens plate such than a lower edge of the lenticular lens plate opposite to the upper edge is offset in an upward direction relative to a lower edge of the Fresnel lens plate to provide a margin extending along the width of the composite screen for accommodating the expansion of the lenticular lens plate. The composite screen is secured to the cabinet and covers the screen mounting opening so that a gap can be formed between the upper clamping fixture and the top edge of the composite screen.
REFERENCES:
patent: 3580661 (1971-05-01), Cooper, Jr.
patent: 4439027 (1984-03-01), Shioda et al.
patent: 4512631 (1985-04-01), Van Breemen
patent: 4679900 (1987-07-01), McKechnie et al.
patent: 4730897 (1988-03-01), McKechnie et al.
Takahashi Motoo
Tsukagoshi Kazuo
Mitsubishi Denki & Kabushiki Kaisha
Wintercorn Richard A.
LandOfFree
Back projection screen in a video projector does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Back projection screen in a video projector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Back projection screen in a video projector will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-825917