JPS57108614A - Angle measuring device by using line sensor - Google Patents

Angle measuring device by using line sensor

Info

Publication number
JPS57108614A
JPS57108614A JP18467780A JP18467780A JPS57108614A JP S57108614 A JPS57108614 A JP S57108614A JP 18467780 A JP18467780 A JP 18467780A JP 18467780 A JP18467780 A JP 18467780A JP S57108614 A JPS57108614 A JP S57108614A
Authority
JP
Japan
Prior art keywords
line sensor
output
scale
light source
constitution
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
JP18467780A
Other languages
Japanese (ja)
Inventor
Nobuyuki Hoshika
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo Co 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 Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Priority to JP18467780A priority Critical patent/JPS57108614A/en
Publication of JPS57108614A publication Critical patent/JPS57108614A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C1/00—Measuring angles
    • G01C1/02—Theodolites
    • G01C1/06—Arrangements for reading scales

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Optical Transform (AREA)

Abstract

PURPOSE:To simplify the constitution of the device by projecting the scales of a scale disc on the line sensor, by reading a minute angle from the output of the sensor and by thereby unnecessitating the compensation of the intensity of an illuminating light source, etc. other than the only use of an ordinary detecting element, including the line sensor. CONSTITUTION:On the circumference of the scale disc 1, a regular scale pattern is drawn, which is illuminated by a diffused light from a light source 4 through a diffusion plate 3 and projected on the line sensor 6 by a projection lens 5. The output of the line sensor 6 can be regarded as an output obtained by dividing one cycle on the scale 2 by the number of light-receiving elements within one cycle F in the output of the line sensor 6 and by interpolating the same. By projecting the scales of the scale disc on the line sensor and by reading a minute angle from the output thereof in this way, the compensation of the intensity of the illuminating light source, etc. is unnecessitated with a simple constitution, thereby the simple-constituted device is obtained.
JP18467780A 1980-12-25 1980-12-25 Angle measuring device by using line sensor Pending JPS57108614A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18467780A JPS57108614A (en) 1980-12-25 1980-12-25 Angle measuring device by using line sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18467780A JPS57108614A (en) 1980-12-25 1980-12-25 Angle measuring device by using line sensor

Publications (1)

Publication Number Publication Date
JPS57108614A true JPS57108614A (en) 1982-07-06

Family

ID=16157422

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18467780A Pending JPS57108614A (en) 1980-12-25 1980-12-25 Angle measuring device by using line sensor

Country Status (1)

Country Link
JP (1) JPS57108614A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59138921A (en) * 1983-01-31 1984-08-09 Yokogawa Hokushin Electric Corp Displacement transducer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50127278A (en) * 1974-03-15 1975-10-07

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50127278A (en) * 1974-03-15 1975-10-07

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59138921A (en) * 1983-01-31 1984-08-09 Yokogawa Hokushin Electric Corp Displacement transducer

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