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1. (WO2018221310) OPTICAL RECEIVER ARRAY AND LIDAR DEVICE

Pub. No.:    WO/2018/221310    International Application No.:    PCT/JP2018/019605
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Wed May 23 01:59:59 CEST 2018
IPC: G02B 6/122
G01S 7/491
G01S 17/32
G02B 6/12
G02B 6/125
G02B 6/32
Applicants: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
国立大学法人横浜国立大学
Inventors: BABA Toshihiko
馬場 俊彦
KONDO Keisuke
近藤 圭祐
ABE Hiroshi
阿部 紘士
Title: OPTICAL RECEIVER ARRAY AND LIDAR DEVICE
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.