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Title:
OPTICAL RECEIVER ARRAY AND LIDAR DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/221310
Kind Code:
A1
Abstract:
This optical receiver array is formed from a plurality of receivers arranged in an array, the receivers being provided with a photonic crystal slow light waveguide (12), and this lidar device is formed from the optical receiver array (10) and a transmitter (21) disposed in a straight line. The arrangement relationship of the plurality of receivers (11a-11d) of the optical receiver array (10) is that of an array element in which the plurality of receivers provided with the photonic crystal slow light waveguide (12) are arranged in an array, and the array arrangement is determined by (b) the arrangement determining the positional relationship among the plurality of receivers constituting the optical receiver array and (c) an alignment determining the orientation of the receivers. The arrangement pitch p, the wavelength λ of reception light, and the arrival angle ∆θr when the phase difference between reception light received at waveguide ends of adjacent receivers is a single wavelength are related by the expression p = λ/sin ∆θr, and a configuration in which the arrival angle ∆θr and the spread angle ∆θt of radiated light are the same is preferred.

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Inventors:
BABA TOSHIHIKO (JP)
KONDO KEISUKE (JP)
ABE HIROSHI (JP)
Application Number:
PCT/JP2018/019605
Publication Date:
December 06, 2018
Filing Date:
May 22, 2018
Export Citation:
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Assignee:
NAT UNIV CORP YOKOHAMA NAT UNIV (JP)
International Classes:
G01S7/4863; G02B6/122; G01S7/491; G01S17/32; G01S17/89; G02B6/12; G02B6/125; G02B6/32
Domestic Patent References:
WO2015050602A12015-04-09
WO2016169931A12016-10-27
Foreign References:
JP2014134404A2014-07-24
JP2007243165A2007-09-20
JP2017032306A2017-02-09
JP2014216549A2014-11-17
JP2016153761A2016-08-25
US20140378328A12014-12-25
Other References:
XIAODONG GU, TOSHIKAZU SHIMADA, AND FUMIO KOYAMA: "Giant and high-resolution beam steering using slow-light waveguide amplifier", OPTICS EXPRESS, vol. 19, no. 23, 7 November 2011 (2011-11-07), pages 22675 - 22683, XP055451699, DOI: 10.1364/OE.19.022675
Attorney, Agent or Firm:
IEIRI Takeshi (JP)
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