Title:
一体型反射投影システム
Document Type and Number:
Japanese Patent JP3864051
Kind Code:
B2
Abstract:
A front projection display system that integrates an optical engine, having control and power supply electronics, and a dedicated projection screen to provide a compact video display device. The projection engine is coupled to a high gain projection screen, having an optimized reflection pattern to give optimum optical performance in ambient light and viewing angle sensitive environments. Components of the projection engine are modularly placed in a retractable arm, pivotally connected to the screen. The arm offers precise registration to the screen apparatus and thus repeatably precisely aligns optically and mechanically to the screen. The projection wall system has an open projection position and a closed storage position. Use of a radically offset projection head having matching keystone correction features allows the arm to protrude above the head of the presenter and offer a sharp and unobtrusive projection zone.
Inventors:
Ernesto M Rodriguez Jr.
Dennis F Bandar Wharf
Dennis F Bandar Wharf
Application Number:
JP2000602682A
Publication Date:
December 27, 2006
Filing Date:
June 29, 1999
Export Citation:
Assignee:
3M INNOVATIVE PROPERTIES COMPANY
International Classes:
G03B21/00; G03B21/10; G03B21/14; G03B21/16; G03B21/30; G03B21/60; H04N5/74; H04N17/00
Domestic Patent References:
| JP2196230A | ||||
| JP3027085A | ||||
| JP2027390U | ||||
| JP2230288A | ||||
| JP10206969A | ||||
| JP3056951A | ||||
| JP62201737U | ||||
| JP10256777A | ||||
| JP4277810A |
Attorney, Agent or Firm:
Aoyama Aoi
Akira Ito
Akira Ito