Title:
光測距装置
Document Type and Number:
Japanese Patent JP6844732
Kind Code:
B2
Abstract:
To provide a technique which can measure a correct distance to a target object regardless of the intensity of light entering a light receiving element.SOLUTION: A light distance measuring device 10 includes: a light source 20 for irradiating an object with light with a first pulse width; a light receiving element 31 for outputting a pulse signal showing that a light reflected from an object has been reflected, the pulse signal being a pulse signal with a second pulse width, the second pulse width being at least the first pulse width; a histogram generation unit 50 for generating a histogram by recording the degree according to the number of pulse signals output from the light receiving element for each predetermined time length; and a peak detection unit 60 for detecting the peak shape from the histogram; and a distance calculating unit 70 for calculating the distance to the target object by using the time corresponding to the peak shape.SELECTED DRAWING: Figure 1
Inventors:
Yoshihide Tateno
Isamu Takai
Isamu Takai
Application Number:
JP2020072018A
Publication Date:
March 17, 2021
Filing Date:
April 14, 2020
Export Citation:
Assignee:
株式会社デンソー
International Classes:
G01S7/4863
Domestic Patent References:
| JP2016176750A | ||||
| JP2010072699A | ||||
| JP2017161321A | ||||
| JP10293179A | ||||
| JP2015068804A |
Foreign References:
| US5243553 | ||||
| US20150041625 | ||||
| WO2018235944A1 |
Attorney, Agent or Firm:
Meisei International Patent Office