JPS56603A - Position detecting unit - Google Patents

Position detecting unit

Info

Publication number
JPS56603A
JPS56603A JP7564979A JP7564979A JPS56603A JP S56603 A JPS56603 A JP S56603A JP 7564979 A JP7564979 A JP 7564979A JP 7564979 A JP7564979 A JP 7564979A JP S56603 A JPS56603 A JP S56603A
Authority
JP
Japan
Prior art keywords
target
photodiode
point
lens
distance
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
JP7564979A
Other languages
Japanese (ja)
Inventor
Kensuke Miki
Yasuji Suzaki
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7564979A priority Critical patent/JPS56603A/en
Publication of JPS56603A publication Critical patent/JPS56603A/en
Pending legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Measurement Of Optical Distance (AREA)

Abstract

PURPOSE: To make position detection high-reliablity and simple, by projecting a laser beam to a target and by focusing the spot image onto a photelectric conversion element arranged in a linear direction and by calculating the position of the target on a basis of the detection signal from the conversion part.
CONSTITUTION: Spot 19 on target 18 of beam 12 of He-Ne or semiconductor laser 11 is focuased onto point 110 of photo diode 13 arranged linearly by lens 13. The photodiode is arranged in the plane formed by optifal axis of lens 13 and laser beam 12. By detecting distance (s) between point 110 and intersection 17 between the photodiode and the optical axis, distance (h), namely, position Z-h of the target is detected. Scanner 111 scans the photodiode by pulses of synchronizing pulse generator 112 to detect the position of point 110, and the position is calculated through comparison pulse generator 113 and comparator 114 by distance measuring equipment 115. Consequently, the position can be detected simply with a high reliablity.
COPYRIGHT: (C)1981,JPO&Japio
JP7564979A 1979-06-18 1979-06-18 Position detecting unit Pending JPS56603A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7564979A JPS56603A (en) 1979-06-18 1979-06-18 Position detecting unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7564979A JPS56603A (en) 1979-06-18 1979-06-18 Position detecting unit

Publications (1)

Publication Number Publication Date
JPS56603A true JPS56603A (en) 1981-01-07

Family

ID=13582303

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7564979A Pending JPS56603A (en) 1979-06-18 1979-06-18 Position detecting unit

Country Status (1)

Country Link
JP (1) JPS56603A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151310U (en) * 1982-04-02 1983-10-11 カルソニックカンセイ株式会社 Silencer
US4702206A (en) * 1984-07-19 1987-10-27 John Harries Rotary positive displacement machine
JPH08338228A (en) * 1995-06-12 1996-12-24 Fujitsubo Giken Kogyo Kk Car silencer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5316652A (en) * 1976-07-29 1978-02-15 Oki Electric Ind Co Ltd Thickness measuring apparatus of plate form objects

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5316652A (en) * 1976-07-29 1978-02-15 Oki Electric Ind Co Ltd Thickness measuring apparatus of plate form objects

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151310U (en) * 1982-04-02 1983-10-11 カルソニックカンセイ株式会社 Silencer
US4702206A (en) * 1984-07-19 1987-10-27 John Harries Rotary positive displacement machine
JPH08338228A (en) * 1995-06-12 1996-12-24 Fujitsubo Giken Kogyo Kk Car silencer

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