Projection type image display apparatus

Details Projection type image display apparatus Projection type image display apparatus

2006-12-05

2006-12-05

Koval, Melissa Jan (Department: 2851)

Optics: image projectors

Composite projected image

Reflector between lamp and screen

C345S156000, C353S050000, C353S122000

Reexamination Certificate

active

07144117

ABSTRACT:
A projection type image display apparatus including a scanning mirror and a projection lens adapted to project an image on an image-displaying screen by scanning with a laser beam, and a detector adapted to detect the presence or absence of an intruding object between the projection means and the screen, wherein detection by the detector is conducted relative to a position preceding the laser beam in the scan direction of the laser beam.

REFERENCES:
patent: 6460999 (2002-10-01), Suzuki
patent: 6575581 (2003-06-01), Tsurushima
patent: 6910778 (2005-06-01), Hamana et al.
patent: 6984039 (2006-01-01), Agostinelli
patent: 2004/0080404 (2004-04-01), White
patent: 2005/0024704 (2005-02-01), Sakai
patent: 2005/0225629 (2005-10-01), Kubota et al.
patent: 03-065916 (1991-03-01), None

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