Optical recording device and optical recording and...

Details Optical recording device and optical recording and... Optical recording device and optical recording and...

2008-11-06

2011-11-01

Bibbins, Latanya (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

08050164

ABSTRACT:
An optical recording device includes a light source, a spatial light modulator, a correcting optical system and a light guiding section. The spatial light modulator includes plural pixels, a signal light region that displays a signal light pattern, and a reference light region that displays a reference light pattern. The spatial light modulator modulates and outputs incident light for each pixel in accordance with a display pattern. The correcting optical system includes a pair of axicon lenses that correct the emitted light from the light source so as to flatten the light intensity distribution thereof on an irradiated surface of the spatial light modulator. The light guiding section guides the corrected light to the spatial light modulator. The signal light and the reference light are irradiated onto an optical recording medium simultaneously and a hologram is recorded into the optical recording medium.

REFERENCES:
patent: 7511867 (2009-03-01), Yasuda et al.
patent: 7639587 (2009-12-01), Sakaguchi et al.
patent: 2007/0153663 (2007-07-01), Fukumoto et al.
patent: 1624451 (2006-02-01), None
patent: 2006-301465 (2006-11-01), None
patent: 10-2007-00150556 (2007-01-01), None
Chinese Office Action for Chinese Patent Application No. 200810183822.2 dated Jun. 11, 2010.

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