Projectors with security area detection

Details Projectors with security area detection Projectors with security area detection

2008-02-18

2010-12-28

Sohn, Seung C (Department: 2878)

Optics: image projectors

Miscellaneous

C250S222100

Reexamination Certificate

active

07857467

ABSTRACT:
A projector comprising a light engine, a detector, and a control unit is disclosed. The light engine comprises a light source and generates a projection beam based on the light from the light source. The space which the projection beam passes through is defined as a projection area, and a security area is defined by the projector to include or overlap the projection area. The detector detects whether a living organism is in the security area or not. When the detector detects a living organism in the security area, the detector generates a warning signal and transmits the warning signal to the control unit. After receiving the warning signal, the control unit directs the projector to enter a security mode to protect the living organism from being hurt.

REFERENCES:
patent: 5117221 (1992-05-01), Mishica, Jr.
patent: 7018055 (2006-03-01), Suzuki
patent: 2006/0225352 (2006-10-01), Fischer et al.
patent: 1523439 (2004-08-01), None
patent: I232346 (2005-05-01), None
CN Office Action mailed Jan. 8, 2010.
English translation of CN1523439, pub. Aug. 25, 2004.
English language abstract of TW I232346, published May 11, 2005.

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