Title:
HOLOGRAM REPRODUCTION DEVICE AND HOLOGRAM REPRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2017/060984
Kind Code:
A1
Abstract:
Provided are a hologram reproduction device and reproduction system capable of improving the reliability and improving the speed of hologram reproduction. Provided is a hologram reproduction device that changes irradiates, with a reference light, a recording medium in which the incident angle of the reference light is changed to a first direction and a hologram has been angle-multiplexing recorded, and reproduces the recorded hologram by receiving, with an imaging element, generated diffracted light as reproduction light, the hologram reproduction device being characterized by being provided with: a reference light angle adjustment unit that adjusts a medium incident angle at which the reference light enters the recording medium; an aperture filter having an aperture which the reproduction light from the recording medium enters and through which the reproduction light is transmitted; a light detection unit that detects light emitted from the aperture filter and outputs a signal on the basis of the detected light; and a positional deviation detection unit that, on the basis of the signal outputted by the light detection unit, detects an amount of relative positional deviation of the recording position of a hologram to be reproduced and the irradiation position on the recording medium of the reference light for reproducing the hologram to be reproduced. The reference light angle adjustment unit adjusts a medium incident angle of the reference light in a second direction which is perpendicular to the first direction on the basis of the positional deviation amount detected by the positional deviation detection unit.
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Inventors:
MORI HIROMITSU (JP)
HOSAKA MAKOTO (JP)
YAMAZAKI KAZUYOSHI (JP)
HOSAKA MAKOTO (JP)
YAMAZAKI KAZUYOSHI (JP)
Application Number:
PCT/JP2015/078436
Publication Date:
April 13, 2017
Filing Date:
October 07, 2015
Export Citation:
Assignee:
HITACHI CONSUMER ELECTRONICS (JP)
International Classes:
G11B7/0065; G11B7/0045; G11B7/0055; G11B7/135
Domestic Patent References:
| WO2015114743A1 | 2015-08-06 | |||
| WO2015040681A1 | 2015-03-26 | |||
| WO2014188540A1 | 2014-11-27 |
Foreign References:
| JP2015082327A | 2015-04-27 | |||
| JP2014089779A | 2014-05-15 | |||
| JP2006251355A | 2006-09-21 | |||
| JP2006208921A | 2006-08-10 |
Attorney, Agent or Firm:
TODA Yuji (JP)
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