Optics: image projectors – Reflector
Reexamination Certificate
2003-02-21
2004-04-27
Dowling, William C. (Department: 2851)
Optics: image projectors
Reflector
C353S079000, C353S088000, C359S449000
Reexamination Certificate
active
06726335
ABSTRACT:
TECHNICAL FIELD
The present invention is generally related to the field of image projection systems.
BACKGROUND INFORMATION
In U.S. patent applications Ser. Nos. 09/519,537 and 09/876,400, an invention was disclosed whereby a substantially transparent medium could be used as a projection screen for capturing an image from an image projector. When the medium was not capturing an image from an image projector, its substantially transparent characteristic permitted persons to see through the medium. However, the system also provided an ability for the medium to capture an image from an image projector for viewing by persons. In one embodiment, the medium was made to have a characteristic that caused it to be nearly opaque, or substantially translucent (permitting the passage of light, but not sufficient as to be able to view objects clearly), so that persons could see clearly the image projected.
The present invention takes the advantages of this system to further uses.
REFERENCES:
patent: 5426531 (1995-06-01), Tsukagoshi
patent: 6572232 (2003-06-01), Yaniv
patent: 6577355 (2003-06-01), Yaniv
Sweaton Michael C.
Tikhonski Alexei
Yaniv Zvi
Dowling William C.
Kordzik Kelly K.
SI Diamond Technology Inc.
Winstead Sechrest & Minick P.C.
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