JPS56608A - Range finder - Google Patents

Range finder

Info

Publication number
JPS56608A
JPS56608A JP7517179A JP7517179A JPS56608A JP S56608 A JPS56608 A JP S56608A JP 7517179 A JP7517179 A JP 7517179A JP 7517179 A JP7517179 A JP 7517179A JP S56608 A JPS56608 A JP S56608A
Authority
JP
Japan
Prior art keywords
light
light receiving
emitting element
light emitting
receiving element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7517179A
Other languages
Japanese (ja)
Inventor
Tokuji Okada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP7517179A priority Critical patent/JPS56608A/en
Publication of JPS56608A publication Critical patent/JPS56608A/en
Pending legal-status Critical Current

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  • Measurement Of Optical Distance (AREA)

Abstract

PURPOSE: To improve sensitivity and resolution cosiderabry, by using one light emitting element at least and many light receiving elements to discriminate distance from the optical path constituted by the light emitting element and a light receiving element which has detected maximum light quantity.
CONSTITUTION: On the optical path between one light emitting element S at least and n-number light receiving elements R, pinhole HS where the irradiation light to the object passes through range finder front P of a distance calculation reference face and pinhole HR where the reflection light from the object passes through front P are provided. Now, if light emitting element S is caused to emit always light to detect the light quantity input to many light receiving elements R by electric scanning, the light quantity becomes maximum in a specific a light receiving element closely connected with existence position of the object. When this specific ligh receiving element is the K-th light receiving element, measured distance D is calculated by expression D=H×L/[W-L+(K-1)×B]. D is expressed by the function of K because H, L, W and B are physical constants peculiar to the range finder, and sensitivity and resolution can be improved considerably by increasing the value of K.
COPYRIGHT: (C)1981,JPO&Japio
JP7517179A 1979-06-16 1979-06-16 Range finder Pending JPS56608A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7517179A JPS56608A (en) 1979-06-16 1979-06-16 Range finder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7517179A JPS56608A (en) 1979-06-16 1979-06-16 Range finder

Publications (1)

Publication Number Publication Date
JPS56608A true JPS56608A (en) 1981-01-07

Family

ID=13568479

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7517179A Pending JPS56608A (en) 1979-06-16 1979-06-16 Range finder

Country Status (1)

Country Link
JP (1) JPS56608A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5866810A (en) * 1981-10-17 1983-04-21 Mazda Motor Corp Obstacle detector for automobile
JPH01245112A (en) * 1988-03-28 1989-09-29 Iwatsu Electric Co Ltd Displacement meter using laser light
JP2011209077A (en) * 2010-03-29 2011-10-20 Kyokko Denki Kk Object detection device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4949625A (en) * 1972-09-12 1974-05-14
JPS51120247A (en) * 1975-04-14 1976-10-21 Kyocera Corp A range finder
JPS5365753A (en) * 1976-11-22 1978-06-12 Toshiba Corp Proximity distance detector
JPS5436968A (en) * 1977-08-30 1979-03-19 Agency Of Ind Science & Technol Range finder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4949625A (en) * 1972-09-12 1974-05-14
JPS51120247A (en) * 1975-04-14 1976-10-21 Kyocera Corp A range finder
JPS5365753A (en) * 1976-11-22 1978-06-12 Toshiba Corp Proximity distance detector
JPS5436968A (en) * 1977-08-30 1979-03-19 Agency Of Ind Science & Technol Range finder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5866810A (en) * 1981-10-17 1983-04-21 Mazda Motor Corp Obstacle detector for automobile
JPH01245112A (en) * 1988-03-28 1989-09-29 Iwatsu Electric Co Ltd Displacement meter using laser light
JP2011209077A (en) * 2010-03-29 2011-10-20 Kyokko Denki Kk Object detection device

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