JPS6425006A - Optical method for detecting distance - Google Patents

Optical method for detecting distance

Info

Publication number
JPS6425006A
JPS6425006A JP18173987A JP18173987A JPS6425006A JP S6425006 A JPS6425006 A JP S6425006A JP 18173987 A JP18173987 A JP 18173987A JP 18173987 A JP18173987 A JP 18173987A JP S6425006 A JPS6425006 A JP S6425006A
Authority
JP
Japan
Prior art keywords
image
precision
measurement
detecting
image position
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.)
Granted
Application number
JP18173987A
Other languages
Japanese (ja)
Other versions
JPH0760090B2 (en
Inventor
Masanori Idesawa
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.)
RIKEN Institute of Physical and Chemical Research
Original Assignee
RIKEN Institute of Physical and Chemical Research
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 RIKEN Institute of Physical and Chemical Research filed Critical RIKEN Institute of Physical and Chemical Research
Priority to JP62181739A priority Critical patent/JPH0760090B2/en
Publication of JPS6425006A publication Critical patent/JPS6425006A/en
Publication of JPH0760090B2 publication Critical patent/JPH0760090B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To realize a wide detection area and high measuring precision, by detecting the position of an optical image roughly in a wide range and by detecting the position of the image with high precision in a limited area. CONSTITUTION:At the time of measurement with high precision, it is confirmed that an image is located in a high-precision measurement section, by the operation of a first semiconductor image position detecting element which can execute measurement of a wide scope, and thereafter switching is made to a second semiconductor image position detecting element DM for high-precise measurement which can detect an image position in a relatively narrow scope, so as to detect an image position rM within this scope. On the occasion, an actual radius position of an image can be determined as the sum of a position rMA in the radius direction of the element DM and the image position rM. According to this constitution, the image position in the high-precision measurement section can be detected with a precision obtained by dividing the section by the resolution of a signal processing system, while the position of the element DM can be disposed very accurately in physical terms and also the stability of the element is high. Therefore the high-precision detection of a distance is enabled.
JP62181739A 1987-07-21 1987-07-21 Optical distance detection method Expired - Fee Related JPH0760090B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62181739A JPH0760090B2 (en) 1987-07-21 1987-07-21 Optical distance detection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62181739A JPH0760090B2 (en) 1987-07-21 1987-07-21 Optical distance detection method

Publications (2)

Publication Number Publication Date
JPS6425006A true JPS6425006A (en) 1989-01-27
JPH0760090B2 JPH0760090B2 (en) 1995-06-28

Family

ID=16106039

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62181739A Expired - Fee Related JPH0760090B2 (en) 1987-07-21 1987-07-21 Optical distance detection method

Country Status (1)

Country Link
JP (1) JPH0760090B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0448210A (en) * 1990-06-18 1992-02-18 Mitsui Eng & Shipbuild Co Ltd Optical distance sensor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61155801A (en) * 1984-12-28 1986-07-15 Toshiba Corp Compound type semiconductor position detecting element
JPS6266110A (en) * 1985-09-19 1987-03-25 Rikagaku Kenkyusho Optical distance detecting device
JPS63167211A (en) * 1986-12-27 1988-07-11 Olympus Optical Co Ltd Distance detecting device
JPS63198817A (en) * 1987-02-12 1988-08-17 Olympus Optical Co Ltd Distance detecting device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61155801A (en) * 1984-12-28 1986-07-15 Toshiba Corp Compound type semiconductor position detecting element
JPS6266110A (en) * 1985-09-19 1987-03-25 Rikagaku Kenkyusho Optical distance detecting device
JPS63167211A (en) * 1986-12-27 1988-07-11 Olympus Optical Co Ltd Distance detecting device
JPS63198817A (en) * 1987-02-12 1988-08-17 Olympus Optical Co Ltd Distance detecting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0448210A (en) * 1990-06-18 1992-02-18 Mitsui Eng & Shipbuild Co Ltd Optical distance sensor

Also Published As

Publication number Publication date
JPH0760090B2 (en) 1995-06-28

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees