Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Reexamination Certificate
2011-03-01
2011-03-01
Phan, James (Department: 2872)
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
C359S196100, C359S197100, C359S208100, C359S212100
Reexamination Certificate
active
07898713
ABSTRACT:
At least one exemplary embodiment is directed to an image display apparatus which displays an image on a surface to be scanned and includes a light source configured to emit a light beam modulated on the basis of image information, a scanner configured to scan the surface to be scanned with the light beam emitted from the light source, a light receiver configured to receive the light beam that is incident upon a particular area of the surface to be scanned when the surface to be scanned is scanned with the light beam, a first determiner configured to determine whether or not an output signal from the light receiver are output at a predetermined time interval, and a controller configured to control driving of the light source on the basis of a determination signal from the determiner.
REFERENCES:
patent: 5489950 (1996-02-01), Masuda
patent: 7711175 (2010-05-01), Endo et al.
patent: 2004/0264006 (2004-12-01), Hatakeyama et al.
patent: 2004-094199 (2004-03-01), None
patent: 2004-264670 (2004-09-01), None
patent: 2005-024695 (2005-01-01), None
Canon Kabushiki Kaisha
Canon USA Inc. IP Division
Phan James
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