JPS56103328A - Illuminance measuring device by photodetector division system - Google Patents

Illuminance measuring device by photodetector division system

Info

Publication number
JPS56103328A
JPS56103328A JP620980A JP620980A JPS56103328A JP S56103328 A JPS56103328 A JP S56103328A JP 620980 A JP620980 A JP 620980A JP 620980 A JP620980 A JP 620980A JP S56103328 A JPS56103328 A JP S56103328A
Authority
JP
Japan
Prior art keywords
photodetector
vehicle
light incident
photodetectors
data
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
JP620980A
Other languages
Japanese (ja)
Other versions
JPS6111365B2 (en
Inventor
Junichi Hatayama
Tetsuo Matsuba
Yoshihiro Ono
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP620980A priority Critical patent/JPS56103328A/en
Publication of JPS56103328A publication Critical patent/JPS56103328A/en
Publication of JPS6111365B2 publication Critical patent/JPS6111365B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

PURPOSE:To eliminate the measurement errors owing to the entry of the shadow of a vehicle into photodetectors and obtain measurement data of high reliability by measuring the light incident from the front of the vehicle and the light incident from the rear with the respectively different photodetectors. CONSTITUTION:The photodetectors for illuminance measurement consist of a photodetector 1 for front data mounted in the front part (a) of a vehicle (c) and a photodetector 2 for rear data mounted in the rear part (b). The photodetector 1 measures the light incident from the front of the vehicle (c) and the light incident from the rear is measured by the photodetector 2. The measurement data of the respective photodetectors 1, 2 are converted to digital signals, after which the data of the same measurement spot are added.
JP620980A 1980-01-21 1980-01-21 Illuminance measuring device by photodetector division system Granted JPS56103328A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP620980A JPS56103328A (en) 1980-01-21 1980-01-21 Illuminance measuring device by photodetector division system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP620980A JPS56103328A (en) 1980-01-21 1980-01-21 Illuminance measuring device by photodetector division system

Publications (2)

Publication Number Publication Date
JPS56103328A true JPS56103328A (en) 1981-08-18
JPS6111365B2 JPS6111365B2 (en) 1986-04-02

Family

ID=11632133

Family Applications (1)

Application Number Title Priority Date Filing Date
JP620980A Granted JPS56103328A (en) 1980-01-21 1980-01-21 Illuminance measuring device by photodetector division system

Country Status (1)

Country Link
JP (1) JPS56103328A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06117923A (en) * 1992-10-02 1994-04-28 Tadashi Ishida Method and apparatus for measuring luminous intensity
JP2017026412A (en) * 2015-07-21 2017-02-02 株式会社トプコン Illumination equipment management system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02220653A (en) * 1989-02-22 1990-09-03 Rofutee Kk Sanitary mat

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06117923A (en) * 1992-10-02 1994-04-28 Tadashi Ishida Method and apparatus for measuring luminous intensity
JP2017026412A (en) * 2015-07-21 2017-02-02 株式会社トプコン Illumination equipment management system

Also Published As

Publication number Publication date
JPS6111365B2 (en) 1986-04-02

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