JPH0418605B2 - - Google Patents

Info

Publication number
JPH0418605B2
JPH0418605B2 JP20625383A JP20625383A JPH0418605B2 JP H0418605 B2 JPH0418605 B2 JP H0418605B2 JP 20625383 A JP20625383 A JP 20625383A JP 20625383 A JP20625383 A JP 20625383A JP H0418605 B2 JPH0418605 B2 JP H0418605B2
Authority
JP
Japan
Prior art keywords
slit
angle
angle measurement
point
reference point
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.)
Expired
Application number
JP20625383A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6098312A (ja
Inventor
Ryoji Honda
Masaaki Arao
Masato Hara
Eiji Takasugi
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 JP20625383A priority Critical patent/JPS6098312A/ja
Publication of JPS6098312A publication Critical patent/JPS6098312A/ja
Publication of JPH0418605B2 publication Critical patent/JPH0418605B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
    • G01D5/34707—Scales; Discs, e.g. fixation, fabrication, compensation
    • G01D5/34715—Scale reading or illumination devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Optical Transform (AREA)
JP20625383A 1983-11-02 1983-11-02 角度測定装置 Granted JPS6098312A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20625383A JPS6098312A (ja) 1983-11-02 1983-11-02 角度測定装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20625383A JPS6098312A (ja) 1983-11-02 1983-11-02 角度測定装置

Publications (2)

Publication Number Publication Date
JPS6098312A JPS6098312A (ja) 1985-06-01
JPH0418605B2 true JPH0418605B2 (enrdf_load_stackoverflow) 1992-03-27

Family

ID=16520267

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20625383A Granted JPS6098312A (ja) 1983-11-02 1983-11-02 角度測定装置

Country Status (1)

Country Link
JP (1) JPS6098312A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS6098312A (ja) 1985-06-01

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