Title:
HOLOGRAM DEVICE
Document Type and Number:
WIPO Patent Application WO/2005/114337
Kind Code:
A1
Abstract:
A hologram device which can reproduce wavelength-multiplexed hologram information by a simple constitution. In the hologram device, light from a light source (10) is projected into a hologram (2a) formed on a recording medium (2), and outgoing light from the hologram (2a) is received by a light receiving part (3). The light source (10) has emission intensity peak of the generating light in a plurality of wavelengths. A variable filter (12) is provided between the light source (10) and the recording medium (2) for switching the wavelength of transmitting light. The variable filter (12) transmits light in a wavelength range including one emission intensity peak, among the light generated by the light source (10), and is connected to a driving part (13) which changes characteristics of the variable filter (12) so as to switch the emission strength peak included in the wavelength range.
Inventors:
Someno, Yoshihiro (1-7 Yukigaya-Otsukacho, Ota-ku Tokyo, 01, 14585, JP)
Application Number:
PCT/JP2005/008528
Publication Date:
December 01, 2005
Filing Date:
May 10, 2005
Export Citation:
Assignee:
ALPS ELECTRIC CO., LTD (1-7 Yukigaya-Otsukacho, Ota-ku Tokyo, 01, 14585, JP)
Someno, Yoshihiro (1-7 Yukigaya-Otsukacho, Ota-ku Tokyo, 01, 14585, JP)
Someno, Yoshihiro (1-7 Yukigaya-Otsukacho, Ota-ku Tokyo, 01, 14585, JP)
International Classes:
G03H1/26; G11B7/0065; G11B7/125; G11B7/135; G11B7/16; G03H1/22; G03H1/28; (IPC1-7): G03H1/26; G11B7/0065; G11B7/125; G11B7/135; G11B7/16
Attorney, Agent or Firm:
Murata, Mikio (Kyodo BLDG. Akasaka 401, 4-3-1 Akasaka, Minato-k, Tokyo 52, 10700, JP)
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