Title:
A VARIABLE SIZE PROJECTION SCREEN APPARATUS
Document Type and Number:
WIPO Patent Application WO1999056172
Kind Code:
A3
Abstract:
A variable size projection screen apparatus comprises image projection means with image feed means and beam generation means, and a screen for imaging the beam. The screen image can be resized in at least two distinctly different sizes. In particular, the screen proper is physically resizable in a lateral direction on at least two distinct levels.
Inventors:
BERGMAN ANTHONIE H
Application Number:
PCT/IB1999/000662
Publication Date:
January 13, 2000
Filing Date:
April 15, 1999
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
PHILIPS SVENSKA AB (SE)
PHILIPS SVENSKA AB (SE)
International Classes:
G03B1/00; G03B21/56; G03B21/58; H04N5/74; (IPC1-7): H04N5/74
Domestic Patent References:
| WO1998057492A1 | 1998-12-17 |
Foreign References:
| DE19600818A1 | 1996-07-18 | |||
| US4795946A | 1989-01-03 | |||
| US5461431A | 1995-10-24 | |||
| US5519447A | 1996-05-21 | |||
| US5793340A | 1998-08-11 | |||
| JPH06237429A | 1994-08-23 |
Download PDF:
Previous Patent: REFLECTION COLOR LIQUID CRYSTAL DISPLAY
Next Patent: IMMERSIVE EXPERIENCE MOTION PICTURE THEATRE AND METHOD
Next Patent: IMMERSIVE EXPERIENCE MOTION PICTURE THEATRE AND METHOD