Optics: image projectors – Projected image combined with real object
Reexamination Certificate
2005-03-01
2005-03-01
Nguyen, Judy (Department: 2851)
Optics: image projectors
Projected image combined with real object
C353S094000, C353S097000, C353S122000
Reexamination Certificate
active
06860604
ABSTRACT:
A method for projecting an image onto a front projection screen without the image being projected onto a presenter and without the presenter casting a shadow. Left and right rectilinear corrections of an image are simultaneously projected onto the screen from each of two positions that are off-axis on opposite sides of the centerline of the screen such that both projections register as a single image. A center of mass of the presenter's silhouette is generated. A vertical join line is located on the screen directly behind said presenter's center of mass. The portion of the projected image from the left projector that extends to the right of the join-line is inhibited. The portion of the projected image from the right projector that extends to the left of the join-line is also inhibited thereby providing the full projected image on the screen from the left and right image segments, without either segment projecting said image onto the presenter, and without casting the presenter's shadow onto the screen.
REFERENCES:
patent: 5270820 (1993-12-01), Fellinger
patent: 6361173 (2002-03-01), Vlahos et al.
patent: 6454415 (2002-09-01), Vlahos
Blackman Rochelle
Blakely & Sokoloff, Taylor & Zafman
Imatte, Inc.
Nguyen Judy
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