Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Reexamination Certificate
2011-08-16
2011-08-16
Choi, Ling (Department: 1761)
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
C359S007000, C359S201200, C359S215100, C359S299000, C359S355000, C359S356000
Reexamination Certificate
active
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.
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Translation of official communication issued in the counterpart International Application No. PCT/JP2004/015046, mailed on Aug. 31, 2006.
Chiku Shinichiro
Fujii Takashi
Geho Mikio
Kitamura Kenji
Kumatoriya Makoto
Choi Ling
Keating & Bennett LLP
National Institute for Materials Science
Peets Monique
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