Title:
HOLOGRAM RECORDING DEVICE
Document Type and Number:
WIPO Patent Application WO/2008/012910
Kind Code:
A1
Abstract:
A hologram recording device (A1) includes: a light source (1) for emitting a laser beam;
a beam splitter (3) which separates the laser beam from the light source (1) into
a recording light (S) and a reference light (R); a spatial light modulator (5)
for modulating the recording light (S) in accordance with information to be recorded;
a recording optical system for applying the modulated recording light (S) to
a predetermined portion of a hologram recording medium (B); and a reference optical
system for applying the reference light (R) while changing the incident angle
against the hologram recording medium (B) so that the recording light (S) is interfered
by the reference light (R) with various angles at the predetermined portion.
A hologram is multiplex-recorded at the predetermined portion by the interference
between the recording light (S) and the reference light (R). The hologram recording
device (A1) further includes light quantity adjusting means (8) for adjusting
the light quantity of the reference light (R) after emitted from a beam splitter
(3) in accordance with the incident angle against the hologram recording medium
(B), so that illuminance of the reference light (R) at the predetermined portion
is a at a predetermined stationary level.
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Inventors:
IWAMURA, Yasumasa (Kamikodanaka 4-chome Nakahara-k, Kawasaki-shi Kanagawa 88, 2118588, JP)
岩村 康正 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通株式会社内 Kanagawa, 2118588, JP)
UNO, Kazushi (Kamikodanaka 4-chome Nakahara-k, Kawasaki-shi Kanagawa 88, 2118588, JP)
宇野 和史 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通株式会社内 Kanagawa, 2118588, JP)
TEZUKA, Koichi (Kamikodanaka 4-chome Nakahara-k, Kawasaki-shi Kanagawa 88, 2118588, JP)
岩村 康正 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通株式会社内 Kanagawa, 2118588, JP)
UNO, Kazushi (Kamikodanaka 4-chome Nakahara-k, Kawasaki-shi Kanagawa 88, 2118588, JP)
宇野 和史 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通株式会社内 Kanagawa, 2118588, JP)
TEZUKA, Koichi (Kamikodanaka 4-chome Nakahara-k, Kawasaki-shi Kanagawa 88, 2118588, JP)
Application Number:
JP2006/314959
Publication Date:
January 31, 2008
Filing Date:
July 28, 2006
Export Citation:
Assignee:
FUJITSU LIMITED (1-1 Kamikodanaka 4-chome, Nakahara-ku Kawasaki-shi Kanagawa, 88, 2118588, JP)
富士通株式会社 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 Kanagawa, 2118588, JP)
IWAMURA, Yasumasa (Kamikodanaka 4-chome Nakahara-k, Kawasaki-shi Kanagawa 88, 2118588, JP)
岩村 康正 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通株式会社内 Kanagawa, 2118588, JP)
UNO, Kazushi (Kamikodanaka 4-chome Nakahara-k, Kawasaki-shi Kanagawa 88, 2118588, JP)
宇野 和史 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通株式会社内 Kanagawa, 2118588, JP)
富士通株式会社 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 Kanagawa, 2118588, JP)
IWAMURA, Yasumasa (Kamikodanaka 4-chome Nakahara-k, Kawasaki-shi Kanagawa 88, 2118588, JP)
岩村 康正 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通株式会社内 Kanagawa, 2118588, JP)
UNO, Kazushi (Kamikodanaka 4-chome Nakahara-k, Kawasaki-shi Kanagawa 88, 2118588, JP)
宇野 和史 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通株式会社内 Kanagawa, 2118588, JP)
International Classes:
G03H1/26; G11B7/0065; G11B7/135
Attorney, Agent or Firm:
YOSHIDA, Minoru et al. (2-32-1301, Tamatsukuri-motomachi Tennoji-ku, Osaka-sh, Osaka 14, 5430014, JP)
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