Title:
INTERFERENCE MEASURING DEVICE AND INTERFERENCE MEASURING METHOD
Document Type and Number:
WIPO Patent Application WO/2010/092739
Kind Code:
A1
Abstract:
Disclosed is interference measuring device for acquiring an interference image used for acquiring three-dimensional information relating to a subject with dynamic variation. A digital holography device (60) of the invention is provided with a laser light source (1), a beam splitter (6) for splitting a laser beam into a reference light beam and an object light beam, and an image capturing element (2). The image capturing element (2) captures an image of the interference pattern formed by the reference light beam and the object light beam arriving via the subject (20). The digital holography device (60) is further provided with a polarized light splitting element (11) for splitting the object light beam into two kinds of object light beam having different directions of polarization and causing an angle difference between the directions of propagation thereof and a polarizer array device (30) in which first polarizer regions and second polarizer regions are arranged and which transmits the reference light beam and the object light beam arriving via the subject (20). Since the first and second polarizer regions of the polarizer array device (30) transmits the polarized components having different directions, capturing an image only once can form a plurality of interference patterns required for phase connection.
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Inventors:
AWATSUJI YASUHIRO
TAHARA TATSUKI
TAHARA TATSUKI
Application Number:
PCT/JP2010/000132
Publication Date:
August 19, 2010
Filing Date:
January 13, 2010
Export Citation:
Assignee:
NAT UNIV CORP KYOTO INST TECH (JP)
AWATSUJI YASUHIRO
TAHARA TATSUKI
AWATSUJI YASUHIRO
TAHARA TATSUKI
International Classes:
G01B9/021; G01B11/24; G02B5/30; G03H1/26
Foreign References:
| JP2002526815A | 2002-08-20 | |||
| JP2005283683A | 2005-10-13 |
Other References:
YASUHIRO AWATSUJI ET AL.: "Single-shot phase- shifting color digital holography", IEEE LEOS ANNUAL MEETING (LEOS 2007) CONFERENCE PROCEEDINGS, October 2007 (2007-10-01), pages 84 - 85
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
Patent business corporation Hara [Kenzo] international patent firm (JP)
Patent business corporation Hara [Kenzo] international patent firm (JP)
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