JPS5539050A - Photoelectric detector - Google Patents

Photoelectric detector

Info

Publication number
JPS5539050A
JPS5539050A JP11269778A JP11269778A JPS5539050A JP S5539050 A JPS5539050 A JP S5539050A JP 11269778 A JP11269778 A JP 11269778A JP 11269778 A JP11269778 A JP 11269778A JP S5539050 A JPS5539050 A JP S5539050A
Authority
JP
Japan
Prior art keywords
voltage
light
variation
detected
control
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.)
Granted
Application number
JP11269778A
Other languages
Japanese (ja)
Other versions
JPS6159445B2 (en
Inventor
Tadashi Furuta
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.)
SANKUSU KK
Panasonic Industrial Devices SUNX Co Ltd
Original Assignee
SANKUSU KK
Sunx 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 SANKUSU KK, Sunx Ltd filed Critical SANKUSU KK
Priority to JP11269778A priority Critical patent/JPS5539050A/en
Publication of JPS5539050A publication Critical patent/JPS5539050A/en
Publication of JPS6159445B2 publication Critical patent/JPS6159445B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/55—Specular reflectivity

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

PURPOSE:To make it possible to follow the wide range of variation of the received light and to indicate and record the variation by using a variable gain amplifier so that the control DC voltage is of the analog output voltage. CONSTITUTION:The modulated light from a light emitting element 1 is reflected on an object ot be detected, and the reflected light is received by a light receiving element 3 so that the variation is fed out as a DC voltage analog quantity. At this time, received light modulating signals are amplified at 4 at the rate of amplification corresponding to the control DC voltage d, and the output is detected at 5 so that the detected output voltage is compared with a standard voltage 7. The voltage proportional to the difference is fed as the control DC voltage d to the amplifier 6, as indicated at 6, and the change in the quantity of the received light is fed out in terms of the voltage d.
JP11269778A 1978-09-13 1978-09-13 Photoelectric detector Granted JPS5539050A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11269778A JPS5539050A (en) 1978-09-13 1978-09-13 Photoelectric detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11269778A JPS5539050A (en) 1978-09-13 1978-09-13 Photoelectric detector

Publications (2)

Publication Number Publication Date
JPS5539050A true JPS5539050A (en) 1980-03-18
JPS6159445B2 JPS6159445B2 (en) 1986-12-16

Family

ID=14593218

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11269778A Granted JPS5539050A (en) 1978-09-13 1978-09-13 Photoelectric detector

Country Status (1)

Country Link
JP (1) JPS5539050A (en)

Also Published As

Publication number Publication date
JPS6159445B2 (en) 1986-12-16

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