Optical head and optical head device

Details Optical head and optical head device Optical head and optical head device

2006-07-20

2009-02-10

Feild, Joseph (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

Reexamination Certificate

active

07489617

ABSTRACT:
An optical head which has a prism with an incident section, an internal reflective surface and an emergent surface, and an optical head device which employs the optical head. Light emitted from a light source is incident to the prism through the incident section, reflects at least once on the internal reflective surface and is converged in the vicinity of the emergent surface. Then, the light effuses through the emergent surface as near field light.

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Objective Lenses for DVD & Near Field Optical Disk Pick-Up by Chul Woo Lee et al. Optical System Lab Corporate Technical Operation, SamSung Electronics Co., Ltd TuP 1 ODF '98, Tokyo Jun. 16, 1998.
Notification of Reasons for Refusal mailed Apr. 30, 2008, directed to counterpart JP application No. 11-077460; 7 pages.

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