Lens material, optical electronic component and optical...

Optical: systems and elements – Holographic system or element – Using a hologram as an optical element

Reexamination Certificate

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C359S007000, C359S201200, C359S215100, C359S299000, C359S355000, C359S356000

Reexamination Certificate

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07999983

ABSTRACT:
An optical material includes lithium tantalate, and a molar composition ratio of lithium oxide and tantalum oxide (Li2O/Ta2O5) in the lithium tantalate is in the range of 0.975 to 0.982. Since an optical material having a high refractive index is provided in an optical unit, at the same focal distance, a lens thickness can be significantly reduced. As a result, an optical electronic component and an optical electronic device including the optical material has a reduced size and thickness and is highly functional.

REFERENCES:
patent: 4898641 (1990-02-01), Ogihara et al.
patent: 6043940 (2000-03-01), Kamiyama et al.
patent: 6211999 (2001-04-01), Gopalan et al.
patent: 6673330 (2004-01-01), Kitamura et al.
patent: 2004/0234867 (2004-11-01), Hatano et al.
patent: 11-35393 (1999-02-01), None
patent: 2002-300001 (2002-10-01), None
patent: 2002300001 (2002-10-01), None
patent: 2003-63894 (2003-03-01), None
patent: 88/08271 (1988-11-01), None
Nagata; “Zukai Rendu Ga Wakaru Hon,” pp. 56-59; Jan. 30, 2003.
Nakamura et al.; “Influence of Powder Supply on Radio-Frequency Power Stability and Compositional Uniformity in Near Stoichiometric LiTaO3 Crystal Grown by Double-Crucible Czochralski Method,” Journal of Crystal Growth; 2002, Elsevier Science B.V.; vol. 245; pp. 267-272.
Bordui et al.; “Stoichiometry Issues in Single-Crystal Lithium Tantalate,” Journal of Applied Physics; Oct. 1, 1995; vol. 78; No. 7; pp. 4647-4650.
Kim et al.; “Growth of LixTa1-xO3 Single Crystals and Their Optical Properties,” Journal of Crystal Growth; 2001; vol. 229; pp. 243-247.
Translation of official communication issued in the counterpart International Application No. PCT/JP2004/015046, mailed on Aug. 31, 2006.

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