Title:
OBJECT DETECTING APPARATUS AND INFORMATION ACQUIRING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2012/005058
Kind Code:
A1
Abstract:
Disclosed is an information acquiring apparatus which can detect, with a compact configuration, deterioration of a diffraction optical element. Also disclosed is an object detecting apparatus having the information acquiring apparatus mounted thereon. The information acquiring apparatus (1) is provided with a laser light source (111) which outputs laser light having a wavelength of approximately 830 nm, a polarization beam splitter (PBS) (113), a 1/4 wavelength plate (114), a DOE (116), and a PD (117). The DOE (116) irradiates a target region with laser light in predetermined dot patterns. The PD (117) receives a part of the laser beam diffracted and reflected by the DOE (116).
Inventors:
UMEDA KATSUMI (JP)
MORIMOTO TAKAAKI (JP)
MORIMOTO TAKAAKI (JP)
Application Number:
PCT/JP2011/061316
Publication Date:
January 12, 2012
Filing Date:
May 17, 2011
Export Citation:
Assignee:
SANYO ELECTRIC CO (JP)
UMEDA KATSUMI (JP)
MORIMOTO TAKAAKI (JP)
UMEDA KATSUMI (JP)
MORIMOTO TAKAAKI (JP)
International Classes:
G01B11/00; G01M11/00; G02B5/18
Domestic Patent References:
| WO2007034824A1 | 2007-03-29 |
Foreign References:
| JPH06201329A | 1994-07-19 | |||
| JP2002022426A | 2002-01-23 | |||
| JPS62269036A | 1987-11-21 | |||
| JPH02129844U | 1990-10-25 |
Attorney, Agent or Firm:
Hiroshi Sumiya (JP)
KADOYA HIROSHI (JP)
KADOYA HIROSHI (JP)
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Claims:
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