Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Reexamination Certificate
2006-06-27
2006-06-27
Phan, James (Department: 2872)
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
C359S214100, C250S559370
Reexamination Certificate
active
07068408
ABSTRACT:
An optical apparatus is disclosed which has a scanner for scanning a predetermined area with a laser beam. The optical apparatus comprises: a laser source; a scanner having a scanning mirror for causing a laser beam generated by the laser source to scan; an angle sensor for sensing angles of the scanning mirror of the scanner; a fault detection block for determining whether the scanning mirror operates safely and normally based at least on angle information coming from the angle sensor; and a projection control block for controlling projection of the laser beam based on fault detection information coming from the fault detection block.
REFERENCES:
patent: 2000-194302 (2000-07-01), None
Kananen Ronald P.
Phan James
Rader & Fishman & Grauer, PLLC
Sony Corporation
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