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Title:
OPTICAL ELEMENT, AND IMAGING UNIT, IMAGING APPARATUS, RADIATION IMAGE SENSOR AND FINGERPRINT COLLATOR WHICH USE THE SAME
Document Type and Number:
WIPO Patent Application WO/1999/006862
Kind Code:
A1
Abstract:
An optical element (10) which comprises as shown in the Figure an input optical member (11) molded to a unitary body by arranging a plurality of optical fibers (14) in parallel with each other, an intermediate optical member (12), and an output optical member (13), wherein the input optical member (11) has incident and emergent surfaces (11a, 11b) which are cut at 31° and 90° respectively with respect to an optical axis, the intermediate optical member (12) has incident and emergent surfaces (12a, 12b) which are cut at 66° respectively with respect to an optical axis, the output optical member (13) has incident and emergent surfaces (13a, 13b) which are cut at 31° and 90° respectively with respect to an optical axis, and the emergent surface (11b) of the input optical member (11) and the incident surface (12a) of the intermediate optical member (12), and the emergent surface (12b) of the intermediate optical member (12) and the incident surface (13a) of the output optical member (13) are in contact with each other respectively.

Inventors:
SUGAWARA TAKEO (JP)
SUZUKI MAKOTO (JP)
KATO MASAYOSHI (JP)
Application Number:
PCT/JP1998/003394
Publication Date:
February 11, 1999
Filing Date:
July 30, 1998
Export Citation:
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Assignee:
HAMAMATSU PHOTONICS KK (JP)
SUGAWARA TAKEO (JP)
SUZUKI MAKOTO (JP)
KATO MASAYOSHI (JP)
International Classes:
G02B6/06; G02B6/08; G02B6/26; G06K9/00; G02B6/42; (IPC1-7): G02B6/06; G01T1/00; G06T1/00
Foreign References:
JPH08286048A1996-11-01
JPH0943439A1997-02-14
JPH0651142A1994-02-25
JPH02249537A1990-10-05
JPH08315143A1996-11-29
Other References:
See also references of EP 1001284A4
Attorney, Agent or Firm:
Hasegawa, Yoshiki (6th floor 13-10, Kyobashi 2-chome Chuo-ku Tokyo, JP)
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