Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2007-02-27
2007-02-27
Wellington, Andrea (Department: 2627)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
C369S112270
Reexamination Certificate
active
10319469
ABSTRACT:
An integrated optical head is provided. In the integrated optical head, a light source emits light. A waveguide guides the light. An input coupler is located at one edge of the waveguide, and couples light emitted from the light source and transmits the coupled light to the waveguide. An output coupler is located at another edge of the waveguide, and couples light emitted from the waveguide and focuses the coupled light on an optical disc. A light path changing unit is installed on the waveguide, and changes the light path of light that has been reflected by the optical disc and then passed through the output coupler. An optical detector receives the light passed through the light path changing unit and converts the received light into an electrical signal in order to detect information from the optical disc Accordingly, an input coupling efficiency and an output coupling efficiency are improved, such that light loss is reduced. Thus, recording and reproduction of an optical head can be improved, and a light, compact, integrated optical head can be obtained.
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Notice to Submit Response issued by the Korean Patent Office in corresponding application 10-2002-0052461 on Jun. 28, 2004.
Chinese Office Action and English translation.
Cho Eun-hyoung
Lee Myung-bok
Nikolai Petrov
Sohn Jin-seung
Agustin Peter Vincent
Buchanan & Ingersoll & Rooney PC
Samsung Electronics Co,. Ltd.
Wellington Andrea
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