JPS5262448A - Lens surface monitoring device of photoelectric instrument - Google Patents

Lens surface monitoring device of photoelectric instrument

Info

Publication number
JPS5262448A
JPS5262448A JP50138853A JP13885375A JPS5262448A JP S5262448 A JPS5262448 A JP S5262448A JP 50138853 A JP50138853 A JP 50138853A JP 13885375 A JP13885375 A JP 13885375A JP S5262448 A JPS5262448 A JP S5262448A
Authority
JP
Japan
Prior art keywords
lens surface
photoelectric instrument
monitoring device
surface monitoring
photoelectric
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
JP50138853A
Other languages
Japanese (ja)
Inventor
Toshihiko Maruo
Hisatoshi Nodera
Yasunori Asakura
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.)
Omron Corp
Original Assignee
Tateisi Electronics Co
Omron Tateisi Electronics Co
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 Tateisi Electronics Co, Omron Tateisi Electronics Co filed Critical Tateisi Electronics Co
Priority to JP50138853A priority Critical patent/JPS5262448A/en
Publication of JPS5262448A publication Critical patent/JPS5262448A/en
Pending legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)

Abstract

PURPOSE: To prevent erroneous action of the photoelectric instrument by projecting the light from the projecting element onto the lens surface of the photoelectric instrument and detecting dust on the lens surface by examining the reflected light.
COPYRIGHT: (C)1977,JPO&Japio
JP50138853A 1975-11-18 1975-11-18 Lens surface monitoring device of photoelectric instrument Pending JPS5262448A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50138853A JPS5262448A (en) 1975-11-18 1975-11-18 Lens surface monitoring device of photoelectric instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50138853A JPS5262448A (en) 1975-11-18 1975-11-18 Lens surface monitoring device of photoelectric instrument

Publications (1)

Publication Number Publication Date
JPS5262448A true JPS5262448A (en) 1977-05-23

Family

ID=15231677

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50138853A Pending JPS5262448A (en) 1975-11-18 1975-11-18 Lens surface monitoring device of photoelectric instrument

Country Status (1)

Country Link
JP (1) JPS5262448A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6417348A (en) * 1987-06-25 1989-01-20 Amp Inc Input detector which detects opaque element in lit region in which surrounding light is varied
JP2008085344A (en) * 2006-09-28 2008-04-10 Samsung Electro-Mechanics Co Ltd Tantalum capacitor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6417348A (en) * 1987-06-25 1989-01-20 Amp Inc Input detector which detects opaque element in lit region in which surrounding light is varied
JP2008085344A (en) * 2006-09-28 2008-04-10 Samsung Electro-Mechanics Co Ltd Tantalum capacitor

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