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1. WO2006096962 - OVERHEAD PROJECTION SYSTEM

Publication Number WO/2006/096962
Publication Date 21.09.2006
International Application No. PCT/CA2006/000351
International Filing Date 13.03.2006
IPC
H04N 5/74 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
74Projection arrangements for image reproduction, e.g. using eidophor
CPC
G03B 21/132
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
21Projectors or projection-type viewers; Accessories therefor
132Overhead projectors, i.e. capable of projecting hand-writing or drawing during action
Applicants
  • SMART TECHNOLOGIES INC. [CA]/[CA] (AllExceptUS)
  • KEENAN, Vaughn E. [CA]/[CA] (UsOnly)
Inventors
  • KEENAN, Vaughn E.
Agents
  • RUSTON, David A.
Priority Data
2,501,21418.03.2005CA
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) OVERHEAD PROJECTION SYSTEM
(FR) SYSTEME DE RETROPROJECTION
Abstract
(EN)
An overhead projection system (20) comprises a generally horizontal projector assembly (22) and a display screen (26) having a display surface (26a) disposed beneath the projector assembly. The projector assembly includes a projector (44) aimed to project images onto the display surface of the display screen. At least one tether (50) acts between the projector assembly and at least one structural element above the projector assembly.
(FR)
La présente invention décrit un système de rétroprojection (20) qui comprend un assemblage de projecteur généralement horizontal (22) et un écran d'affichage (26) possédant une surface d'affichage (26a) disposée sous l'assemblage de projecteur. L'assemblage de projecteur comprend un projecteur (44) destiné à projeter des images sur la surface d'affichage de l'écran. Au moins une attache (50) agit entre l'assemblage de projecteur et au moins un élément structurel placé au-dessus de l'assemblage de projecteur.
Also published as
EP6705304
Latest bibliographic data on file with the International Bureau