Beam splitting system and optical information read/write device

Details Beam splitting system and optical information read/write device Beam splitting system and optical information read/write device

2007-10-16

2007-10-16

Hindi, Nabil (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S112080

Reexamination Certificate

active

10854159

ABSTRACT:
A light beam splitting element that splits a beam incident on a beam receiving surface into a plurality of beams. The beam receiving surface has at least one predetermined area that directs a portion of the incident beam to proceed in a predetermined direction, the portion of the beam incident on the one predetermined area being insusceptible to spherical aberration. Further, the beam receiving surface has at least another predetermined area that directs another portion of the incident beam to proceed in another predetermined direction, the another portion of the beam incident on the another predetermined area being susceptible to spherical aberration.

REFERENCES:
patent: 7020055 (2006-03-01), Kim et al.
patent: 2002/0054554 (2002-05-01), Yamanaka
patent: 2002/0093744 (2002-07-01), Yamamoto et al.
patent: 2002-150569 (2002-05-01), None
patent: 2002-150598 (2002-05-01), None

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