Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2007-07-03
2007-07-03
Dinh, Tan (Department: 2627)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
C369S112280, C369S112250, C369S112080
Reexamination Certificate
active
10092650
ABSTRACT:
A lens for an optical recording and reproducing system includes: a plane of incidence on which a light generated from a light source is made incident; a first reflection side for reflecting a light passing through a plane of incidence; and a second reflection side for reflecting again the light that has been reflected on the first reflection side, the second reflection side being formed to be an ellipsoid side, and the first reflection side and the second reflection side being coated with a reflection material. A very small optical system in its size and weight is possibly constructed, so that information recording and reproducing can be possible only with one focussing lens without a necessity of an objective lens. Accordingly, an ultra-thin optical recording and reproducing system of which height is remarkably reduced can be provided. In addition, since the weight of the head portion can be reduced and the entrance pupil of the light source can be made small, a power consumption of a driving unit and an overall system can be much reduced.
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Dinh Tan
Giesy Adam R.
Lee Hong Degerman Kang & Schmadeka
LG Electronics Inc.
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