JPS5735716A - Photoelectric rotary encoder - Google Patents

Photoelectric rotary encoder

Info

Publication number
JPS5735716A
JPS5735716A JP11141980A JP11141980A JPS5735716A JP S5735716 A JPS5735716 A JP S5735716A JP 11141980 A JP11141980 A JP 11141980A JP 11141980 A JP11141980 A JP 11141980A JP S5735716 A JPS5735716 A JP S5735716A
Authority
JP
Japan
Prior art keywords
output
photodetecting element
substance
level vth
output signal
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
JP11141980A
Other languages
Japanese (ja)
Inventor
Yoshihei Tani
Kiyoshi Ebina
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP11141980A priority Critical patent/JPS5735716A/en
Publication of JPS5735716A publication Critical patent/JPS5735716A/en
Pending 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
    • G01D5/36—Forming the light into pulses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)

Abstract

PURPOSE:To form an encoder output with high reliability by a simple circuit configuration, by forming an output signal for movement information of a substance from an output of the second photodetecting element, in accordance with the basis of an output of the first photodetecting element for a monitor. CONSTITUTION:In accordance with the basis of an output of the first photodetecting element PD1 for a monitor to which a light beam from a light emission element L is always provided, and an output signal for movement information of a substance is formed from an output of the second photodetecting element PD2 to which a light beam from the same light emission element L is made incident intermittently through a moving substance. For instance, an output of an operational amplifier OP1 is led out as an output for providing a thershold level Vth by use of a ciruit as shown in the figure, so that a digital output signal Va of a low levle and a high level in the state that an input signal Vao of a relevant comparator Comp is higher than the thershold level Vth, and in the state that it is lower than the threshold level Vth, respectively.
JP11141980A 1980-08-12 1980-08-12 Photoelectric rotary encoder Pending JPS5735716A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11141980A JPS5735716A (en) 1980-08-12 1980-08-12 Photoelectric rotary encoder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11141980A JPS5735716A (en) 1980-08-12 1980-08-12 Photoelectric rotary encoder

Publications (1)

Publication Number Publication Date
JPS5735716A true JPS5735716A (en) 1982-02-26

Family

ID=14560691

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11141980A Pending JPS5735716A (en) 1980-08-12 1980-08-12 Photoelectric rotary encoder

Country Status (1)

Country Link
JP (1) JPS5735716A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59146722U (en) * 1983-03-23 1984-10-01 横河電機株式会社 optical scale reader
JPS60515U (en) * 1983-06-17 1985-01-05 日本サ−ボ株式会社 optical encoder
JPS607021U (en) * 1983-06-28 1985-01-18 日本サ−ボ株式会社 optical encoder
JPS607020U (en) * 1983-06-28 1985-01-18 日本サ−ボ株式会社 optical encoder
JPS6027315U (en) * 1983-08-02 1985-02-23 東北リコ−株式会社 Light intensity fluctuation correction device for photoelectric encoder
JPS6046023U (en) * 1983-09-03 1985-04-01 シャープ株式会社 Photoelectric encoder
JPS61231413A (en) * 1985-04-05 1986-10-15 Nippon Soken Inc Optical rotation re-detection apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5377651A (en) * 1976-12-21 1978-07-10 Ube Ind Ltd Compensating device of bridge circuit including photoelectric elemenats
JPS5395664A (en) * 1977-02-01 1978-08-22 Agency Of Ind Science & Technol Contactless position setter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5377651A (en) * 1976-12-21 1978-07-10 Ube Ind Ltd Compensating device of bridge circuit including photoelectric elemenats
JPS5395664A (en) * 1977-02-01 1978-08-22 Agency Of Ind Science & Technol Contactless position setter

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59146722U (en) * 1983-03-23 1984-10-01 横河電機株式会社 optical scale reader
JPS60515U (en) * 1983-06-17 1985-01-05 日本サ−ボ株式会社 optical encoder
JPS607021U (en) * 1983-06-28 1985-01-18 日本サ−ボ株式会社 optical encoder
JPS607020U (en) * 1983-06-28 1985-01-18 日本サ−ボ株式会社 optical encoder
JPS6027315U (en) * 1983-08-02 1985-02-23 東北リコ−株式会社 Light intensity fluctuation correction device for photoelectric encoder
JPS6046023U (en) * 1983-09-03 1985-04-01 シャープ株式会社 Photoelectric encoder
JPS61231413A (en) * 1985-04-05 1986-10-15 Nippon Soken Inc Optical rotation re-detection apparatus

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