Top > Search of International Patents > HOLOGRAM REPRODUCTION METHOD, OPTICAL PHASE-TO-INTENSITY CONVERSION METHOD, DECODING METHOD OF ENCRYPTED PHASE-MODULATED SIGNAL, HOLOGRAM RECORDING AND REPRODUCTION DEVICE, AND OPTICAL PHASE-TO-INTENSITY CONVERTER

HOLOGRAM REPRODUCTION METHOD, OPTICAL PHASE-TO-INTENSITY CONVERSION METHOD, DECODING METHOD OF ENCRYPTED PHASE-MODULATED SIGNAL, HOLOGRAM RECORDING AND REPRODUCTION DEVICE, AND OPTICAL PHASE-TO-INTENSITY CONVERTER

Foreign code F130007137
File No. S2011-0696-N0
Posted date Jan 30, 2013
Country WIPO
International application number 2012JP066607
International publication number WO 2013/008641
Date of international filing Jun 28, 2012
Date of international publication Jan 17, 2013
Priority data
  • P2011-154192 (Jul 12, 2011) JP
Title HOLOGRAM REPRODUCTION METHOD, OPTICAL PHASE-TO-INTENSITY CONVERSION METHOD, DECODING METHOD OF ENCRYPTED PHASE-MODULATED SIGNAL, HOLOGRAM RECORDING AND REPRODUCTION DEVICE, AND OPTICAL PHASE-TO-INTENSITY CONVERTER
Abstract

A phase distribution signal is generated by using an SLM (11) to phase-modulate light emitted from a laser source (10). By focusing the phase distribution signal via an objective lens (12) onto a hologram recording medium (13), the phase distribution signal is recorded in the hologram recording medium (13). For reproduction, the same optical system is used to irradiate the reproduction-time read-out beam onto the hologram recording medium (13), and the generated optical intensity signal is read in an imaging element (15).

  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY,
  • OKAMOTO, ATSUSHI,
  • TAKABAYASHI, MASANORI
  • Inventor
  • OKAMOTO, ATSUSHI,
  • TAKABAYASHI, MASANORI
IPC(International Patent Classification)
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