JPS57111432A - 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
JPS57111432A
JPS57111432A JP18769480A JP18769480A JPS57111432A JP S57111432 A JPS57111432 A JP S57111432A JP 18769480 A JP18769480 A JP 18769480A JP 18769480 A JP18769480 A JP 18769480A JP S57111432 A JPS57111432 A JP S57111432A
Authority
JP
Japan
Prior art keywords
luminous intensity
front lamp
point
automobile front
spots
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
JP18769480A
Other languages
Japanese (ja)
Other versions
JPH029298B2 (en
Inventor
Makoto Yamanoi
Kazuki Takahashi
Atsuhiko Murata
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 JP18769480A priority Critical patent/JPS57111432A/en
Publication of JPS57111432A publication Critical patent/JPS57111432A/en
Publication of JPH029298B2 publication Critical patent/JPH029298B2/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 the spots having the luminous intensity higher than that of a prescribed ratio to the highest luminous intensity and supposing that a mass point equivalent to the light volume exists at each spot. CONSTITUTION:An automobile front lamp HL, i.e., a subject of measurement is set opposite exactly to a tester and switched on so that the lamp axis LL passes through the center L0 of a condenser lens. Then a start switch is pushed to start the gathering of data based on a program. A point M of the highest luminous intensity is first decided among these data, and then the spots having the luminous intensity higher than the luminosity obtained by multiplying a prescirbed ratio by the highest luminous intensity are detected to decide a region AR. It is supposed that a mass point equivalent to its light volume exists at each point within the range AR in order to obtain the centroid point. Thus the proper aiming is possible for the front lamp of an automobile.
JP18769480A 1980-12-29 1980-12-29 Deciding method of irradiation reference axis for automobile front lamp or the like Granted JPS57111432A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18769480A JPS57111432A (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
JP18769480A JPS57111432A (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
JPS57111432A true JPS57111432A (en) 1982-07-10
JPH029298B2 JPH029298B2 (en) 1990-03-01

Family

ID=16210508

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18769480A Granted JPS57111432A (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) JPS57111432A (en)

Cited By (2)

* 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
US4647195A (en) * 1984-07-17 1987-03-03 Toyota Jidosha Kabushiki Kaisha Automotive headlamp testing method and apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH068657U (en) * 1992-07-06 1994-02-04 平野整機工業株式会社 Door hinge structure

Cited By (2)

* 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
US4647195A (en) * 1984-07-17 1987-03-03 Toyota Jidosha Kabushiki Kaisha Automotive headlamp testing method and apparatus

Also Published As

Publication number Publication date
JPH029298B2 (en) 1990-03-01

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