Optical head and hologram recording device including the same

Details Optical head and hologram recording device including the same Optical head and hologram recording device including the same

2005-06-07

2005-06-07

Boutsikaris, Leonidas (Department: 2872)

Optical: systems and elements

Holographic system or element

Hardware for producing a hologram

C365S125000, C365S216000, C365S234000, C369S103000

Reexamination Certificate

active

06903853

ABSTRACT:
An optical head comprises an integrated unit for recording and reproducing page data on a reflective recording medium, wherein the integrated unit includes recording and reproducing units each corresponding to a bit of data of the page data, wherein each of the recording and reproducing units has a light emitter for emitting an object beam and a reference beam, an optical switch for transmitting or blocking the object beam, and a detector. Each of the recording and reproducing units records a bit of data corresponding to a state indicating whether or not a hologram has been formed and reproduces a bit of data corresponding to a state indicating whether or not a reference beam has been received by the light receiver when a reference beam is emitted to a recording position. The integrated unit of the optical head records and reproduces page data on a recording medium by recording and reproducing bit data on the recording medium by each of the recording and reproducing units.

REFERENCES:
patent: 4458345 (1984-07-01), Bjorklund et al.
patent: 6322933 (2001-11-01), Daiber et al.
patent: 2002/0015376 (2002-02-01), Liu et al.
patent: 2002/0191236 (2002-12-01), King

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