Optical: systems and elements – Optical modulator – Light wave directional modulation
Reexamination Certificate
2007-07-09
2008-12-30
Spector, David N (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave directional modulation
C359S321000, C359S322000
Reexamination Certificate
active
07471446
ABSTRACT:
A scan-type optical apparatus includes a light source device that emits a laser beam, an electro-optic element that conducts scan of the laser beam emitted from the light source device by varying refractive index distribution in accordance with the level of voltage to be applied, and a light blocking member disposed on an optical path of the laser beam emitted from the electro-optic element when no voltage is applied to the electro-optic element.
REFERENCES:
patent: 2008/0117499 (2008-05-01), Nojima
patent: 2008/0204851 (2008-08-01), Uchikawa et al.
patent: 2008/0204858 (2008-08-01), Won et al.
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patent: A-2005-241482 (2005-09-01), None
patent: A-2006-085189 (2006-03-01), None
“Discovery of a Novel Beam Scanning Phenomenon,”Nippon Telegraph and Telephone Corporation; May 18, 2006 (with Translation).
“Novel Beam Scanning Phenomenon Using KTN Crystal;”NTT Technical Review; vol. 4; No. 7; Jul. 2006.
Nojima Shigeo
Uchikawa Daisuke
Oliff & Berridg,e PLC
Seiko Epson Corporation
Spector David N
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