JPS57111430A - 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
JPS57111430A
JPS57111430A JP18769280A JP18769280A JPS57111430A JP S57111430 A JPS57111430 A JP S57111430A JP 18769280 A JP18769280 A JP 18769280A JP 18769280 A JP18769280 A JP 18769280A JP S57111430 A JPS57111430 A JP S57111430A
Authority
JP
Japan
Prior art keywords
luminous intensity
curve
front lamp
intensity
reference axis
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
JP18769280A
Other languages
Japanese (ja)
Other versions
JPH029296B2 (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 JP18769280A priority Critical patent/JPS57111430A/en
Publication of JPS57111430A publication Critical patent/JPS57111430A/en
Publication of JPH029296B2 publication Critical patent/JPH029296B2/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

Abstract

PURPOSE:To ensure the proper aiming, by obtaining an equiluminous intensity curve formed by a gathering of the spots having the luminous intensity of a prescribed ratio to the highest luminous intensity among the light distribution patterns and furthermore obtaining a square region circumscribed to the above-mentioned equiliminous intensity curve. CONSTITUTION:A front lamp HL which is a subject of measurement for a tester for automobile front lamp is set opposite exactly to the tester so that the lamp axis LL passes the center L6 of a condenser lens. Then a start switch is pushed to collect the data based on a prescribed 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. Thus an equiluminous itensity curve N is obtained. In this case, a square region SAR circumscribed to the curve N is obtained, and the axis passing the center point of the region SAR is defined as the illumination reference axis to ensure the proper aiming.
JP18769280A 1980-12-29 1980-12-29 Deciding method of irradiation reference axis for automobile front lamp or the like Granted JPS57111430A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18769280A JPS57111430A (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
JP18769280A JPS57111430A (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
JPS57111430A true JPS57111430A (en) 1982-07-10
JPH029296B2 JPH029296B2 (en) 1990-03-01

Family

ID=16210471

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18769280A Granted JPS57111430A (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) JPS57111430A (en)

Cited By (3)

* 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
JPH01131430A (en) * 1987-11-17 1989-05-24 Anzen Jidosha Kk Confrontation detecting device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03123091U (en) * 1990-03-27 1991-12-16

Cited By (3)

* 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
JPH01131430A (en) * 1987-11-17 1989-05-24 Anzen Jidosha Kk Confrontation detecting device

Also Published As

Publication number Publication date
JPH029296B2 (en) 1990-03-01

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