Title:
OPTICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/017243
Kind Code:
A1
Abstract:
Provided is an optical device in which the accuracy of separating reflection light of emitted light and other ambient light, can be enhanced. An optical device (1) comprises: a line sensor (9) having a plurality of light reception elements that receive incident light including reflection light resulting from laser light having been emitted from a light source (2) and reflected by an object (100), and including ambient light; a diffraction grating (7) that guides the incident light to the plurality of light reception elements by diffracting the incident light to a direction depending on the wavelength; and a control unit (10) that detects the reflection light on the basis of the light reception amounts of the light reception elements. The diffraction grating (7) is configured to guide, to one of the plurality of light reception elements, a wavelength within a predetermined range that includes the wavelength of the laser light emitted from the light source (2).
Inventors:
SATO MAKOTO (JP)
OCHIAI TAKANORI (JP)
YANAGISAWA TAKUMA (JP)
OGASAWARA MASAKAZU (JP)
IZUTA RYO (JP)
OCHIAI TAKANORI (JP)
YANAGISAWA TAKUMA (JP)
OGASAWARA MASAKAZU (JP)
IZUTA RYO (JP)
Application Number:
PCT/JP2018/026030
Publication Date:
January 24, 2019
Filing Date:
July 10, 2018
Export Citation:
Assignee:
PIONEER CORP (JP)
International Classes:
G01S7/481; G01C3/06; G01S7/487
Foreign References:
| JP2017015403A | 2017-01-19 | |||
| JP2011141261A | 2011-07-21 | |||
| JP2007085832A | 2007-04-05 | |||
| US20050068517A1 | 2005-03-31 | |||
| JP2015108539A | 2015-06-11 | |||
| JP2007085832A | 2007-04-05 |
Other References:
See also references of EP 3657204A4
Attorney, Agent or Firm:
TAKINO, Fumio et al. (JP)
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