Optical: systems and elements – Projection screen – Acoustical
Reexamination Certificate
2007-05-14
2010-11-02
Mahoney, Christopher E (Department: 2862)
Optical: systems and elements
Projection screen
Acoustical
Reexamination Certificate
active
07826134
ABSTRACT:
Disclosed herein is a projection screen. The screen includes a soft thin elastic transmission sheet having an elongation rate of 50% or more and high transmissivity, the elastic transmission sheet constituting a front surface of the screen, and a thin image sheet for focusing an image projected from a projector, the image sheet constituting a rear surface of the screen. The image sheet may serve as a transmission sheet or a reflection sheet. The image sheet may be directly formed at the screen, or the image sheet may be a hard film attached to the rear of the elastic transmission sheet. A vibration plate is disposed at the outside of the image sheet. Consequently, incident image is transmitted or reflected without any interference with external light, and therefore, it is possible to increase the brightness of the screen by two to five times as compared to a conventional screen. Also, external acoustic sound is dispersed and focused on the elastic transmission sheet of the screen, and the acoustic sound is extinguished by the vibrate plate. Consequently, the screen according to the present invention has a sound absorbing function and a high-brightness image display function.
REFERENCES:
patent: 2862552 (1958-12-01), Franz
patent: 3523717 (1970-08-01), Glenn, Jr.
patent: 4143943 (1979-03-01), Rawson
patent: 4406519 (1983-09-01), Shaw
patent: 5159362 (1992-10-01), Monroe et al.
patent: 5361163 (1994-11-01), Matsuda et al.
patent: 7510111 (2009-03-01), Mikkelsen et al.
patent: 2003/0137728 (2003-07-01), Kuroda et al.
patent: 2004/0240054 (2004-12-01), Aiura et al.
patent: 06250289 (1994-09-01), None
Bacon & Thomas PLLC
Mahoney Christopher E
Rhodes Leon W.
LandOfFree
High-definition sound-absorbing screen does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High-definition sound-absorbing screen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-definition sound-absorbing screen will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4220966