Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate
2007-11-06
2007-11-06
Lester, Evelyn A. (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave temporal modulation
C359S263000, C359S318000, C359S320000, C359S323000, C345S084000
Reexamination Certificate
active
11346936
ABSTRACT:
A light control unit comprises: a substrate; an insulating film; a first transistor; a reflecting film formed on the insulating film; a light modulating film formed on the reflecting film; a plurality of pairs of electrodes arranged two-dimensionally on the light modulating film; and a polarizing plate formed on a first electrode. Here, the light modulating film is made of a material that varies in refractive index in accordance with the intensity of an electric field applied thereto. For such a material, PLZT containing Pb, Zr, Ti, and La as constituent elements may be used.
REFERENCES:
patent: 6819463 (2004-11-01), Noonan
patent: 2005/0168663 (2005-08-01), Miyachi et al.
patent: 2006/0138451 (2006-06-01), Fujimori et al.
patent: 5-257103 (1993-10-01), None
patent: 7-146657 (1995-06-01), None
patent: 2001-337303 (2001-12-01), None
patent: 2002-297008 (2002-10-01), None
An electronic translation of Japanese patent publication, JP 2001-337303, from the website of the National Center for Industrial Property Information and Training (as of Oct. 24, 2006).
International Search Report for International Application No. PCT/JP2004/011381 dated Nov. 9, 2004.
International Preliminary Report on Patentability for International Application No. PCT/JP2004/011381 dated May 18, 2006.
Fujimori Yoshikazu
Nakahara Ken
Nakamura Takashi
Cantor & Colburn LLP
Lester Evelyn A.
Rohm & Co., Ltd.
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