Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2005-11-10
2009-08-25
Feild, Joseph H (Department: 2627)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
C369S112010
Reexamination Certificate
active
07580336
ABSTRACT:
An optical head has a beam input/output coupler on a planar waveguide and other parts including: a light transmitting element emitting a beam; a planar waveguide formed on a substrate and receiving the beam oscillated from the light transmitting element; a beam input/output coupler integrated as a thin film on a portion of the planar waveguide and receiving the beam through the planar waveguide to transmit the beam vertically toward a disc positioned above the planar waveguide or transmitting the beam reflected from the disc through the planar waveguide; and light receiving elements receiving the beam propagated to the planar waveguide through the beam input/output coupler.
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Chung Hee Sook
Kang Kwang Yong
Paek Mun Cheol
Park Yong Woo
Ryu Ho Jun
Electronics and Telecommunications Research Institute
Feild Joseph H
Ladas & Parry LLP
Lamb Christopher R
LandOfFree
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