JPS57163815A - Photoencoder - Google Patents

Photoencoder

Info

Publication number
JPS57163815A
JPS57163815A JP4877181A JP4877181A JPS57163815A JP S57163815 A JPS57163815 A JP S57163815A JP 4877181 A JP4877181 A JP 4877181A JP 4877181 A JP4877181 A JP 4877181A JP S57163815 A JPS57163815 A JP S57163815A
Authority
JP
Japan
Prior art keywords
photodiodes
mask
consequently
disk
need
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
JP4877181A
Other languages
Japanese (ja)
Inventor
Shingo Kato
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP4877181A priority Critical patent/JPS57163815A/en
Publication of JPS57163815A publication Critical patent/JPS57163815A/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
    • G01D5/347—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

Abstract

PURPOSE:To eliminate the need for a mask and to achieve excellent detecting operation by providing a photodetecting elements where the array pattern of photodiodes is decided corresponding to the slit width of a disk. CONSTITUTION:The array pattern 12 of photodiodes 10 corresponds to the width of the slit 7 of a photoencoder disk 2. Consequently, the need for a mask is eliminated, and positioning is therefore unnecessary, reducing the cost. In addition, a gap between a light emitting element 4 and a photodetecting element 5 is shortened, and consequently the output levels of the photodiodes 10 are increased, so that excellent detecting operation is achieved.
JP4877181A 1981-04-01 1981-04-01 Photoencoder Pending JPS57163815A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4877181A JPS57163815A (en) 1981-04-01 1981-04-01 Photoencoder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4877181A JPS57163815A (en) 1981-04-01 1981-04-01 Photoencoder

Publications (1)

Publication Number Publication Date
JPS57163815A true JPS57163815A (en) 1982-10-08

Family

ID=12812534

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4877181A Pending JPS57163815A (en) 1981-04-01 1981-04-01 Photoencoder

Country Status (1)

Country Link
JP (1) JPS57163815A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6224315U (en) * 1985-07-26 1987-02-14
US4673808A (en) * 1984-10-17 1987-06-16 Asahi Kasei Kogyo Kabushiki Kaisha Disc for rotary encoder and method for producing same
WO1987005693A1 (en) * 1986-03-14 1987-09-24 Mitutoyo Mfg. Co., Ltd. Photoelectric displacement detector
JPH0260818U (en) * 1988-10-28 1990-05-07
US4987505A (en) * 1987-10-19 1991-01-22 Victor Company Of Japan, Ltd. Magnetic head device having photo detector cell
CN100409010C (en) * 2001-02-23 2008-08-06 清华大学 Two-dimensional optic coder produced by micro processing and use

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4673808A (en) * 1984-10-17 1987-06-16 Asahi Kasei Kogyo Kabushiki Kaisha Disc for rotary encoder and method for producing same
JPS6224315U (en) * 1985-07-26 1987-02-14
WO1987005693A1 (en) * 1986-03-14 1987-09-24 Mitutoyo Mfg. Co., Ltd. Photoelectric displacement detector
US4840488A (en) * 1986-03-14 1989-06-20 Mitutoyo Mfg. Co., Ltd. Photoelectric type displacement detecting instrument
US4987505A (en) * 1987-10-19 1991-01-22 Victor Company Of Japan, Ltd. Magnetic head device having photo detector cell
JPH0260818U (en) * 1988-10-28 1990-05-07
CN100409010C (en) * 2001-02-23 2008-08-06 清华大学 Two-dimensional optic coder produced by micro processing and use

Similar Documents

Publication Publication Date Title
JPS5369688A (en) Photoelectric photometer
DE3583010D1 (en) SEMICONDUCTOR PHOTODETECTOR.
DE3576220D1 (en) LIGHT-SENSITIVE COLOR PHOTOGRAPHIC SILERHALOGENID MATERIAL.
JPS56136076A (en) Photoelectric converter
IT8941598A0 (en) TURBINE HAVING SEMI-INSULATED INLET.
JPS57163815A (en) Photoencoder
JPS5427786A (en) Integrated light source
FR2493521B1 (en) INTEGRATED PHOTOMETER
JPS5242390A (en) Semiconductor light receiving device
JPS52146235A (en) Color photographic light sensitive material
JPS542745A (en) Image former
JPS5436755A (en) Photoelectric type angle and position detector
JPS57163814A (en) Photoencoder
JPS5339146A (en) Lens system
JPS5361298A (en) Photoelectric smoke detector
JPS5315179A (en) Pressure-electricity converter
JPS5413784A (en) Semiconductor photo detector
SU602793A1 (en) Double-beam compensation photometer
JPS53137686A (en) Semiconductor laser unit
JPS5246832A (en) Optical type encoder
JPS5342747A (en) Optical logic device device
JPS5362000A (en) Face guard type light beam type detector
IT8521927A0 (en) CONTACT SCREEN FOR CONTRAST ADJUSTMENT.
JPS5347266A (en) Color picture tube and its manufacture
JPS52152186A (en) Photo semiconductor device