Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2006-07-18
2006-07-18
Miller, Brian E. (Department: 2652)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
Reexamination Certificate
active
07079472
ABSTRACT:
An optical head of a type useable in a optical disk reader/writer is provided. One of the optical elements is provided in a fashion that one or more optical parameters or characteristics of the system are invariant, regardless of whether the one optical element is used, or not. In one embodiment the optical element is a beamshaper. In order to provide the desired invariant property, the surfaces of the optical element are preferably formed with high accuracy. One manner of economically achieving high accuracy is to measure errors or imperfections in a first formed, preferably etched, surface and adjust the shape or position of a second aligned etched surface so as to at least partially compensate for the errors or imperfections.
REFERENCES:
patent: 4768183 (1988-08-01), Ohnishi et al.
patent: 5286338 (1994-02-01), Feldblum et al.
patent: 5923635 (1999-07-01), Yamanaka
patent: 5930220 (1999-07-01), Shimano et al.
patent: 5995476 (1999-11-01), Kim
patent: 6128134 (2000-10-01), Feldman et al.
patent: 6195208 (2001-02-01), Ngoi et al.
patent: 6359845 (2002-03-01), Lee et al.
patent: 6404709 (2002-06-01), Kouno
patent: 6552317 (2003-04-01), Takeda et al.
patent: 6577376 (2003-06-01), Shih
patent: 6664998 (2003-12-01), Kyoya et al.
patent: 0 886 352 (1998-12-01), None
patent: 11176744 (1999-07-01), None
patent: WO 00/33121 (2000-06-01), None
Brown, et al.; “Anamorphic Lenses For Laser Diode Circularization”, in Laser Diodes and LEDs In Industrial, Measurement, Imaging and Sensors Applications II: Testing, Packaging and Reliabilioty of Semiconductor Lasers V. Preceedings of SPIE, vol. 3945 (2000).
Bell Bernard
Redmond Ian
Shuman Curt
Battaglia Michael V.
DPHI Acquisitions, Inc.
Hallman Jonathan W.
MacPherson Kwok & Chen & Heid LLP
Miller Brian E.
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