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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)	G11B 7/0065 Recording, reproducing or erasing by using optical interference patterns, e.g. holograms G03H 1/10 using modulated reference beam G03H 1/22 Processes or apparatus for obtaining an optical image from holograms;;

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National University Corporation Hokkaido University Institute for the Promotion of Business-Regional Collaboration
URL: http://www.mcip.hokudai.ac.jp/cms/cgi-bin/index.pl?view_category_lang=2
E-mail:
Address: Kita 21-jyo Nishi 11-chome, Kita-ku, Sapporo-shi,Hokkaido, Japan , 001-0021
Fax: 81-11-706-9550

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Contact Information for " 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 "

National University Corporation Hokkaido University Institute for the Promotion of Business-Regional Collaboration
URL: http://www.mcip.hokudai.ac.jp/cms/cgi-bin/index.pl?view_category_lang=2
E-mail:
Address: Kita 21-jyo Nishi 11-chome, Kita-ku, Sapporo-shi,Hokkaido, Japan , 001-0021
Fax: 81-11-706-9550

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Gazette	WO 2013/008641(PDF,2333KB)