Optical: systems and elements – Projection screen – Rear projection screen
Reexamination Certificate
2011-04-05
2011-11-08
Laballe, Clayton E (Department: 2862)
Optical: systems and elements
Projection screen
Rear projection screen
C359S461000
Reexamination Certificate
active
08054547
ABSTRACT:
A seamless, shadowless, rear projection full dome imaging system comprising a 360° screen having a plurality of translucent screen sections, a rigid superstructure to which the screen sections are attached; clamping rings to hold the screen sections together; clamp arms to attach the screen sections to the superstructure, a transparent light guide attached to each clamping ring; adjacent screen sections being held between adjacent light guides by clamp arms; a plurality of projectors projecting a light image onto the rear of the screen sections; the light guides having a rear face angled perpendicular to the projected light; and a narrow front edge on the front side of the light guide. All surfaces of the light guides, except the rear face and the narrow front edge, are coated with a black opaque finish.
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Anderson Glyn H.
Anderson Janeen D.
Bryce Jeffrey W.
Perkins Joshua W.
Acaji, Inc.
Astor Sanford
Butler Kevin
Laballe Clayton E
Lewis Brisbois Bisgaard & Smith
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