Title:
測距方法及び測距装置
Document Type and Number:
Japanese Patent JP7081994
Kind Code:
B2
Abstract:
A ranging method and a range finder allow reliable measurement of the distance to a target object even when the target obj ect has a very low reflectivity and/or under conditions with disturbances. The range finder includes: a light receiving element configured to receive a reflected component of light emitted to a target object; a first detection unit and a second detection unit configured to perform two different types of detections with different detection gains; and a distance/light-intensity calculation processing unit serves as a calculation unit for calculating a measured distance based on a combination of result patterns of the detections performed by the first and second detection units. The range finder determines a distance by causing each of the first and second detection units performs at least two detections with a time interval per a single light emission.
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Inventors:
Tomoyuki Ishikawa
Hirotaka Yamada
Hajime Sannomiya
Hirotaka Yamada
Hajime Sannomiya
Application Number:
JP2018118307A
Publication Date:
June 07, 2022
Filing Date:
June 21, 2018
Export Citation:
Assignee:
Nippon Signal Co., Ltd.
International Classes:
G01S7/487; G01S7/4865; G01S17/10
Domestic Patent References:
| JP2002311138A | ||||
| JP2011021980A | ||||
| JP2015200555A | ||||
| JP2016014535A |
Foreign References:
| EP2182377A1 | ||||
| WO2016173711A1 | ||||
| US20130003041 |
Attorney, Agent or Firm:
Fukuda Mitsuhiro
Kei Yamakawa
Kei Yamakawa
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