JPS57111431A - Deciding method of irradiation reference axis for automobile front lamp or the like - Google Patents

Deciding method of irradiation reference axis for automobile front lamp or the like

Info

Publication number
JPS57111431A
JPS57111431A JP18769380A JP18769380A JPS57111431A JP S57111431 A JPS57111431 A JP S57111431A JP 18769380 A JP18769380 A JP 18769380A JP 18769380 A JP18769380 A JP 18769380A JP S57111431 A JPS57111431 A JP S57111431A
Authority
JP
Japan
Prior art keywords
luminous intensity
region
decided
spots
automobile front
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
JP18769380A
Other languages
Japanese (ja)
Other versions
JPH029297B2 (en
Inventor
Makoto Yamanoi
Atsuhiko Murata
Kazuki Takahashi
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.)
Koito Manufacturing Co Ltd
Original Assignee
Koito Manufacturing 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 Koito Manufacturing Co Ltd filed Critical Koito Manufacturing Co Ltd
Priority to JP18769380A priority Critical patent/JPS57111431A/en
Publication of JPS57111431A publication Critical patent/JPS57111431A/en
Publication of JPH029297B2 publication Critical patent/JPH029297B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/02—Testing optical properties
    • G01M11/06—Testing the alignment of vehicle headlight devices
    • G01M11/064—Testing the alignment of vehicle headlight devices by using camera or other imaging system for the light analysis
    • G01M11/065—Testing the alignment of vehicle headlight devices by using camera or other imaging system for the light analysis details about the image analysis

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

PURPOSE:To ensure the proper aiming, by obtaining a region formed by a gathering of spots having the luminous intensity higher than that of a prescribed ratio and deciding the centroid point of the gathering of those mass spots in the above-mentioned region. CONSTITUTION:An automobile front lamp HL, i.e., a subject of measurement is set opposite exactly to a tester and switched on so that a lamp axis LL passes the center L0 of a condenser lens. Then a start switch is pushed to start the collection of data based on a program. A point M of the highest luminous intensity is first decided among these data, and then the luminous intensity obtained by multiplying a prescribed ratio by the highest luminous intensity is decided. In this case, the spots having >=2,400cd luminuous intensity are detected to decide a region AR. Then the centroid point is decided for the region AR, and the axis passing the centroid point is defined as the illumination reference axis. In such way, the proper aiming is possible.
JP18769380A 1980-12-29 1980-12-29 Deciding method of irradiation reference axis for automobile front lamp or the like Granted JPS57111431A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18769380A JPS57111431A (en) 1980-12-29 1980-12-29 Deciding method of irradiation reference axis for automobile front lamp or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18769380A JPS57111431A (en) 1980-12-29 1980-12-29 Deciding method of irradiation reference axis for automobile front lamp or the like

Publications (2)

Publication Number Publication Date
JPS57111431A true JPS57111431A (en) 1982-07-10
JPH029297B2 JPH029297B2 (en) 1990-03-01

Family

ID=16210491

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18769380A Granted JPS57111431A (en) 1980-12-29 1980-12-29 Deciding method of irradiation reference axis for automobile front lamp or the like

Country Status (1)

Country Link
JP (1) JPS57111431A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5923231A (en) * 1982-07-30 1984-02-06 Banzai:Kk Head light testing device
JPS60122349A (en) * 1983-12-05 1985-06-29 Stanley Electric Co Ltd Optical axis inspection device for light emitters
US4609939A (en) * 1983-07-18 1986-09-02 Toyota Jidosha Kabushiki Kaisha Method of and apparatus for automatically correcting position of TV camera
US4647195A (en) * 1984-07-17 1987-03-03 Toyota Jidosha Kabushiki Kaisha Automotive headlamp testing method and apparatus
JPH01131429A (en) * 1987-11-17 1989-05-24 Anzen Jidosha Kk Device for detecting contour of luminous flux
US5796473A (en) * 1995-03-20 1998-08-18 Honda Giken Kogyo Kabushiki Kaisha Method of adjusting optical axis of headlight of vehicle
JP2002372479A (en) * 2001-06-13 2002-12-26 Anzen Motor Car Co Ltd Method and apparatus for light confrontation of light receiving part in headlight tester

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5923231A (en) * 1982-07-30 1984-02-06 Banzai:Kk Head light testing device
US4609939A (en) * 1983-07-18 1986-09-02 Toyota Jidosha Kabushiki Kaisha Method of and apparatus for automatically correcting position of TV camera
JPS60122349A (en) * 1983-12-05 1985-06-29 Stanley Electric Co Ltd Optical axis inspection device for light emitters
US4647195A (en) * 1984-07-17 1987-03-03 Toyota Jidosha Kabushiki Kaisha Automotive headlamp testing method and apparatus
JPH01131429A (en) * 1987-11-17 1989-05-24 Anzen Jidosha Kk Device for detecting contour of luminous flux
US5796473A (en) * 1995-03-20 1998-08-18 Honda Giken Kogyo Kabushiki Kaisha Method of adjusting optical axis of headlight of vehicle
JP2002372479A (en) * 2001-06-13 2002-12-26 Anzen Motor Car Co Ltd Method and apparatus for light confrontation of light receiving part in headlight tester

Also Published As

Publication number Publication date
JPH029297B2 (en) 1990-03-01

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