Recording and reproducing device and polarization direction controlling method
A technology of polarization direction and reproduction equipment, which is applied in the field of circularly polarized light output with the same rotation direction of circularly polarized light, and can solve the problems of complex holograms
Inactive Publication Date: 2010-06-09
SONY GRP CORP
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Problems solved by technology
On the other hand, this recording and reproducing system has the problem that the hologram formed by irradiation with signal light and reference light is complicated.
Method used
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no. 1 example
[0075] [Construction of Recording and Reproducing Device]
[0076] [Polarization Direction Control Method as First Example]
[0077] [Polarization Direction Control Method as Second Example]
[0078] [Summary of the first embodiment]
no. 2 example
[0080] [Polarization Direction Control Method as First Example]
[0081] [Polarization Direction Control Method as Second Example]
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Abstract
Disclosed herein is a recording and reproducing device including: a light source; an intensity modulating section; a polarization beam splitter; a selective polarization direction controlling section; a linearly polarized light / circularly polarized light converting section; and a driving controlling section and a polarization direction controlling method.
Description
technical field [0001] The present invention relates to a recording and reproducing apparatus that performs recording and reproducing on a holographic recording medium comprising a recording layer and a reflective circular polarizing film, wherein data is recorded on the recording layer by interference fringes between signal light and reference light In the present invention, the reflective circular polarizing film is formed under the recording layer and is formed to output circularly polarized light in the same rotation direction as incident circularly polarized light as reflected light. The present invention also relates to a polarization direction control method in a recording and reproducing device. [0002] The present invention also relates to a recording and reproducing apparatus that performs recording and reproducing on a holographic recording medium including a recording layer and a reflective linear polarizing film, wherein data is recorded on the recording medium b...
Claims
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IPC IPC(8): G11B7/0065G03H1/12G03H1/22
CPCG11B7/1365G03H2001/2276G11B7/0065G11B7/1369G11B7/128G11B7/1395G11B7/24044G03H2222/31G03H1/26
Inventor 伊藤辉将田中健二福本敦
Owner SONY GRP CORP
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