JPS57175271A - Reflection type photosensor - Google Patents

Reflection type photosensor

Info

Publication number
JPS57175271A
JPS57175271A JP56060112A JP6011281A JPS57175271A JP S57175271 A JPS57175271 A JP S57175271A JP 56060112 A JP56060112 A JP 56060112A JP 6011281 A JP6011281 A JP 6011281A JP S57175271 A JPS57175271 A JP S57175271A
Authority
JP
Japan
Prior art keywords
reflected light
detected
irregularly reflected
constitution
basement
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
JP56060112A
Other languages
Japanese (ja)
Inventor
Masato Matsumoto
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56060112A priority Critical patent/JPS57175271A/en
Publication of JPS57175271A publication Critical patent/JPS57175271A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

PURPOSE:To facilitate the sensing of the irregularly reflected light even though the difference is small between the reflection rate of an object to be detected and that of the basement part, by measuring the diffusely reflected light from a part to be detected. CONSTITUTION:A light emitting element 11 is set so as to have the light emitting signal an incident angle alpha of about 30 deg.-45 deg. to an object 12 to be detected. A photodetector 13 is set opposite to the object 12 in terms of the photodetecting surface. In such constitution, the detector 13 detects the irregularly reflected light sent from the object 12. Thus the irregularly reflected light is substantially zero since a basement 15 like a photoreceptor drum, etc. is close to the mirror surface in case the object 12 does not exists. In case the object 12 like the blank paper exists, the irregularly reflected light is caused. Thus the irregularly reflected light is detected, and the existence of this reflected light is perceived.
JP56060112A 1981-04-21 1981-04-21 Reflection type photosensor Pending JPS57175271A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56060112A JPS57175271A (en) 1981-04-21 1981-04-21 Reflection type photosensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56060112A JPS57175271A (en) 1981-04-21 1981-04-21 Reflection type photosensor

Publications (1)

Publication Number Publication Date
JPS57175271A true JPS57175271A (en) 1982-10-28

Family

ID=13132698

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56060112A Pending JPS57175271A (en) 1981-04-21 1981-04-21 Reflection type photosensor

Country Status (1)

Country Link
JP (1) JPS57175271A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6090852U (en) * 1983-11-28 1985-06-21 シグマ技術工業株式会社 Reflective photo sensor
JPH04295388A (en) * 1991-03-22 1992-10-20 Copal Electron Co Ltd Position detecting device for motor shaft of pachinko (japanese pinball) playing machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6090852U (en) * 1983-11-28 1985-06-21 シグマ技術工業株式会社 Reflective photo sensor
JPH04295388A (en) * 1991-03-22 1992-10-20 Copal Electron Co Ltd Position detecting device for motor shaft of pachinko (japanese pinball) playing machine

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