Optical disk apparatus and optical aberration correcting method

Details Optical disk apparatus and optical aberration correcting method Optical disk apparatus and optical aberration correcting method

2011-06-14

2011-06-14

Edun, Muhammad N. (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044320, C369S044370, C369S112230, C369S112020

Reexamination Certificate

active

07961565

ABSTRACT:
An optical disk apparatus irradiates first and second lights, which are emitted from an identical light source, on a disk-like volumetric recording medium from both sides thereof with first and second object lenses corresponding to the first and second lights, respectively, such that the lights are focused in an identical focal point position and records a standing wave. The optical disk apparatus includes an aberration adding unit that adds complementary aberrations to the first and second lights made incident on the volumetric recording medium, respectively.

REFERENCES:
patent: 7224653 (2007-05-01), Takehara et al.
patent: 4-87028 (1992-03-01), None
patent: 11-133843 (1999-05-01), None
patent: 2002-123948 (2002-04-01), None
patent: 2006-209821 (2006-08-01), None
patent: 2006-338782 (2006-12-01), None
Robert R. McLeod, et al., “Microholographic multilayer optical disk data storage”, Applied Optics, vol. 44, No. 16, Jun. 1, 2005, 1 cover and pp. 3197-3207.

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