JPS5759125A - Measuring device for luminous intensity distribution of car lamp - Google Patents

Measuring device for luminous intensity distribution of car lamp

Info

Publication number
JPS5759125A
JPS5759125A JP55132941A JP13294180A JPS5759125A JP S5759125 A JPS5759125 A JP S5759125A JP 55132941 A JP55132941 A JP 55132941A JP 13294180 A JP13294180 A JP 13294180A JP S5759125 A JPS5759125 A JP S5759125A
Authority
JP
Japan
Prior art keywords
luminous intensity
intensity distribution
car
electric signal
image
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
JP55132941A
Other languages
Japanese (ja)
Inventor
Katsutoshi Ono
Yasutada Takagi
Haruhisa Shima
Yoshinaga Fukuda
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.)
HAMAMATSU TELEVISION KK
Hamamatsu TV Co Ltd
Nissan Motor Co Ltd
Original Assignee
HAMAMATSU TELEVISION KK
Hamamatsu TV Co Ltd
Nissan Motor 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 HAMAMATSU TELEVISION KK, Hamamatsu TV Co Ltd, Nissan Motor Co Ltd filed Critical HAMAMATSU TELEVISION KK
Priority to JP55132941A priority Critical patent/JPS5759125A/en
Publication of JPS5759125A publication Critical patent/JPS5759125A/en
Pending 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
    • G01J1/4257—Photometry, e.g. photographic exposure meter using electric radiation detectors applied to monitoring the characteristics of a beam, e.g. laser beam, headlamp beam

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

PURPOSE:To measure the luminous intensity distribution characteristics of head- lights of a car easily and securely by converting a distributed pattern optical image formed on a screen into an electric signal by an image desector TV camera. CONSTITUTION:Headlights 2, equipped on a car, are turned on to irradiate a screen 4 with their light. A luminous intensity distribution pattern formed by its reflected light is photodetected by an image desector TV camera 10 having a wide dynamic range, and photoelectrons corresponding to the optical image are reflected under the command of an arighmetic controller 13 to be multiplied successively. Then, the multiplied electrons are counted by a photon counting part 11 to be converted into an electric signal which corresponds to the luminous intensity distribution, and it is compared by a control part 13 with a reference illuminance electric signal obtained by a standard light source 15. For the calibration of the measured value, a position reference light source 18 is used. This constitution facilitates and secures the measurements of the luminous intensity characteristics of the headlights of the car.
JP55132941A 1980-09-26 1980-09-26 Measuring device for luminous intensity distribution of car lamp Pending JPS5759125A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55132941A JPS5759125A (en) 1980-09-26 1980-09-26 Measuring device for luminous intensity distribution of car lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55132941A JPS5759125A (en) 1980-09-26 1980-09-26 Measuring device for luminous intensity distribution of car lamp

Publications (1)

Publication Number Publication Date
JPS5759125A true JPS5759125A (en) 1982-04-09

Family

ID=15093071

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55132941A Pending JPS5759125A (en) 1980-09-26 1980-09-26 Measuring device for luminous intensity distribution of car lamp

Country Status (1)

Country Link
JP (1) JPS5759125A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4609939A (en) * 1983-07-18 1986-09-02 Toyota Jidosha Kabushiki Kaisha Method of and apparatus for automatically correcting position of TV camera
US5164785A (en) * 1991-02-08 1992-11-17 Hopkins Manufacturing Corporation Headlight aiming apparatus and display
JPH051950A (en) * 1991-06-05 1993-01-08 Chuo Denshi Keisoku Kk Illuminance measuring method for vehicle light
US5331393A (en) * 1992-12-11 1994-07-19 Hopkins Manufacturing Corporation Method and apparatus for locating a specific location on a vehicle headlamp
FR2708739A1 (en) * 1993-07-30 1995-02-10 Sdika Claude Method and device making it possible to facilitate angular calibration of an apparatus used for adjusting the headlights of a vehicle
US5426500A (en) * 1994-01-04 1995-06-20 Chuo Electronic Measurement Co., Ltd. Illuminance measurement of vehicle lamp
US5485265A (en) * 1994-09-02 1996-01-16 Hopkins Manufacturing Corporation Vehicle headlight aiming apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5247506A (en) * 1975-10-13 1977-04-15 Kobe Steel Ltd Nitrogen-containing powder-sintered high speed steel
JPS534590A (en) * 1976-07-02 1978-01-17 Hitachi Denshi Ltd Measurement of optical distribution on optical axis
JPS54109461A (en) * 1978-02-15 1979-08-28 Canon Inc Testing method of directive light source

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5247506A (en) * 1975-10-13 1977-04-15 Kobe Steel Ltd Nitrogen-containing powder-sintered high speed steel
JPS534590A (en) * 1976-07-02 1978-01-17 Hitachi Denshi Ltd Measurement of optical distribution on optical axis
JPS54109461A (en) * 1978-02-15 1979-08-28 Canon Inc Testing method of directive light source

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4609939A (en) * 1983-07-18 1986-09-02 Toyota Jidosha Kabushiki Kaisha Method of and apparatus for automatically correcting position of TV camera
US5164785A (en) * 1991-02-08 1992-11-17 Hopkins Manufacturing Corporation Headlight aiming apparatus and display
US5373357A (en) * 1991-02-08 1994-12-13 Hopkins Manufacturing Corporation Headlight aiming method using pattern framing
JPH051950A (en) * 1991-06-05 1993-01-08 Chuo Denshi Keisoku Kk Illuminance measuring method for vehicle light
US5331393A (en) * 1992-12-11 1994-07-19 Hopkins Manufacturing Corporation Method and apparatus for locating a specific location on a vehicle headlamp
FR2708739A1 (en) * 1993-07-30 1995-02-10 Sdika Claude Method and device making it possible to facilitate angular calibration of an apparatus used for adjusting the headlights of a vehicle
US5426500A (en) * 1994-01-04 1995-06-20 Chuo Electronic Measurement Co., Ltd. Illuminance measurement of vehicle lamp
US5485265A (en) * 1994-09-02 1996-01-16 Hopkins Manufacturing Corporation Vehicle headlight aiming apparatus

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