JPS6117933A - Adjusting device of fitting position of headlight - Google Patents

Adjusting device of fitting position of headlight

Info

Publication number
JPS6117933A
JPS6117933A JP13866384A JP13866384A JPS6117933A JP S6117933 A JPS6117933 A JP S6117933A JP 13866384 A JP13866384 A JP 13866384A JP 13866384 A JP13866384 A JP 13866384A JP S6117933 A JPS6117933 A JP S6117933A
Authority
JP
Japan
Prior art keywords
bright
boundary line
headlight
dark boundary
screen
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
JP13866384A
Other languages
Japanese (ja)
Other versions
JPH0544979B2 (en
Inventor
Toshiharu Sakamoto
俊治 坂本
Kunji Kimura
訓司 木村
Hiroshi Fujii
博司 藤井
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.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
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 Mazda Motor Corp filed Critical Mazda Motor Corp
Priority to JP13866384A priority Critical patent/JPS6117933A/en
Publication of JPS6117933A publication Critical patent/JPS6117933A/en
Publication of JPH0544979B2 publication Critical patent/JPH0544979B2/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
    • 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

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

PURPOSE:To enable the automatic adjustment of the fitting position of a headlight with good accuracy by making in a pattern the illumination due to a headlight, by finding the bright and dark boundary line with an isoilluminous line and by calculating the corrected length conforming to the bright and dark boundary line of the standard. CONSTITUTION:The adjusting device is composed of a screen 4 on which the projecting light 3 of the headlight 2 of an automobile 1 is projected, a television camera 5, a television for monitoring 6 displaying the bright and dark boundary line L2, a data processing means 7 and an automatic adjusting means (the figure is omitted), etc. The illumination due to the projection 3 of the headlight 2 of above the screen 4 is detected by the television camera 5 and after finding the bright and dark boundary line (the figure is omitted) with making an isoilluminous line (the figure is omitted) the bright and dark boundary line L2 which is made in a straight line by a recursive on method is found. The corrected length conforming to the standard bright and dark boundary line L4 is then calculated and by the automatic adjusting means 20 the position of the headlight 2 is adjusted. The automatic adjustment can be thus performed with good accuracy and efficiency.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、自動車のヘッドライトの取付は位置調整装置
に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a position adjustment device for mounting a headlight on an automobile.

（従来技術） 従来、自動車の組立ラインにおいて、ヘッドライトの取
付位置の調整は、検査位置に配置された自動車の前方に
スクリーンを配設し、該スクリーンにヘッドライトのロ
ービームを照射させ、該ロービームによる明暗部にて形
成される明暗境界線が、予めスクリーン上に記された合
格範囲内にあるか否かを目視にて確認しながら行ってい
る。(Prior art) Conventionally, on an automobile assembly line, adjustment of the mounting position of headlights was carried out by arranging a screen in front of the automobile placed at the inspection position, irradiating the low beam of the headlight onto the screen, and adjusting the mounting position of the headlight. This is done while visually confirming whether the bright and dark boundary line formed by the bright and dark areas is within the acceptable range marked on the screen in advance.

ところが、上記明暗境界線は明確にあられれないため、
視認による調整が困難で、精度上の問題がある。However, since the above-mentioned bright and dark boundary line is not clearly defined,
It is difficult to adjust by visual inspection, and there are problems with accuracy.

ところで、先行技術としては、特開昭ｊソー、２グ２３
．２号公報に示すように、ヘッドライトで投光されたス
クリーン上の最も明るいスポットゾーンの重心位置から
、明暗境界線を推定することが知られている。By the way, as a prior art, Japanese Patent Application Publication No. 2003-231002
．． As shown in Japanese Patent No. 2, it is known to estimate the brightness/darkness boundary line from the center of gravity of the brightest spot zone on the screen illuminated by headlights.

（発明の目的） 本発明は、自動車のヘッドライトの取付位置を精度よく
かつ効率よく検査し、これに基づいて自動的に調整する
ことができるヘッドライトの取付は位置調整装置を提供
することを目的とする。(Object of the Invention) The present invention provides a headlight mounting position adjustment device that can accurately and efficiently inspect the mounting position of a headlight of a vehicle and automatically adjust it based on the inspection. purpose.

（発明の構成） 本発明は、テレビカメラにより検出されたスクリーン上
のヘッドライトによる照度を、所定個数の照度のランク
付けをして前記スクリーン上を碁盤目状にパターン化し
、等ランクの部位を結んで等照度線を作成するとともに
最高ランクの部位から照度中心を決定し、該照度中心を
通る上下方向の直線について等照度線のピッチ間隔を演
算して所定ピッチ以上の間隔となる境界点を検出し、該
境界点を通る明暗境界線の水平部と傾斜部との交点と、
基準となる明暗境界線の交点との間の補正長さを演算す
るデータ処理手段と、該補正長さに基づいてヘッドライ
トの位置調整工具を回転させて調整する自動調整手段と
を具備することを特徴とするものである。(Structure of the Invention) The present invention ranks the illuminance of a predetermined number of illuminances from headlights on a screen detected by a television camera, patterns the screen in a checkerboard pattern, and places areas of equal rank. Connect them to create isoluminance lines, determine the illuminance center from the highest rank part, calculate the pitch interval of the isoluminous lines for the vertical straight line passing through the illuminance center, and find the boundary points with an interval of at least a predetermined pitch. the intersection of the horizontal part and the slope of the bright/dark boundary line that passes through the boundary point;
The present invention includes a data processing means for calculating a correction length between the intersection point of a light and dark boundary line serving as a reference, and an automatic adjustment means for rotating and adjusting a headlight position adjustment tool based on the correction length. It is characterized by:

（実施例） 以下、本発明の実施例を図面に沿って説明する。(Example) Embodiments of the present invention will be described below with reference to the drawings.

第１図は、自動車１のヘッドライト２の投光乙における
明暗境界線ＬＬ　（第５図参照）の検出によってヘッド
ライト２の取付は位置を検査する装置を示す。第１図に
おいて、４は自動車１の前方に上下動可能に配設されヘ
ッドライト２が投光されるスクリーン、５はスクリーン
４上におけるヘッドライト２のロービームの投光を検出
するテレビカメラ、６はテレビカメラ５により検出され
直線化処理された明暗境界線Ｌ２　（第２図参照）を・
該明暗境界線の設定合格範囲Ｓ（上限ライン１！１、下
限ライン１２の間）とともに表示するモニタ用テレビで
ある。FIG. 1 shows a device for inspecting the mounting position of a headlight 2 by detecting the bright/dark boundary line LL (see FIG. 5) in the projection area of the headlight 2 of an automobile 1. In FIG. 1, numeral 4 is a screen that is vertically movable in front of the automobile 1 and projects the headlights 2; 5 is a television camera that detects the low beam projection of the headlights 2 on the screen 4; 6; is the bright/dark boundary line L2 (see Figure 2) detected by the television camera 5 and linearized.
This is a monitor television that displays a set acceptable range S (between upper limit line 1!1 and lower limit line 12) of the bright/dark boundary line.

７はデータ処理手段で、テレビカメラ５の検出値に所定
個数の照度ランク付けをして前記スクリーン４上を碁盤
目状にパターン化する（第７図参照）。しかして、第５
図に示すように、等ランクの部位を結んで等照度曲線Ｌ
３を作成するとともに最高ランクの部位から照度中心Ｐ
１を決定し、それから、照度中心Ｐ１を通る上下方向の
直線１３について等照度曲線Ｌ３のピッチ間隔を演算し
て所定のピッチ以上の間隔となる境界点Ｐ２を検出し、
該境界点Ｐ２を通る明暗境界線Ｌ１を２　回帰式の手法
等により直線化された明暗境界線Ｌ２の水平部Ｌ２人　
　と傾斜部Ｌ２Ｂ　　との交点Ｐ３と、基準となる明暗
境界線Ｌ４の交点Ｐ４との間の補正長さく例えばＸ方向
の成分Ｌ５及びＹ方向の成分Ｌ６）を演算し、後述の自
動調整手段２０にて。Reference numeral 7 denotes a data processing means which ranks the detection values of the television camera 5 in a predetermined number of illuminance ranks and forms a checkerboard pattern on the screen 4 (see FIG. 7). However, the fifth
As shown in the figure, isoluminance curve L is created by connecting parts of equal rank.
3 and the illuminance center P from the highest rank part.
1, then calculate the pitch interval of the isoluminance curve L3 with respect to the vertical straight line 13 passing through the illuminance center P1, and detect the boundary point P2 having an interval equal to or more than a predetermined pitch,
The brightness and darkness boundary line L1 passing through the boundary point P2 is 2. The horizontal part L2 of the brightness and darkness boundary line L2 straightened by a regression method etc.
The correction length between the intersection point P3 of the slope portion L2B and the intersection point P4 of the reference light-dark boundary line L4 (for example, the X-direction component L5 and the Y-direction component L6) is calculated, and the automatic adjustment means 20 described later At.

交点Ｐ３が交点Ｐ４に一致するように自動調整させるも
のである（第４図参照）。The intersection point P3 is automatically adjusted to match the intersection point P4 (see FIG. 4).

すなわち、具体的構成は、第２図番こ示すように。That is, the specific configuration is as shown in the second figure.

テレビカメラ５からの映像信号はマルチプレクサ１１を
介して入力され、Ａ　／　Ｄ変換器１２によりＡ／Ｄ変
換される。A video signal from the television camera 5 is input via a multiplexer 11 and A/D converted by an A/D converter 12.

メモリ１３に記憶されている検査プログラムに基づいて
ＣＰＵ１４により演算処理される。１５は車種設定釦群
１６及び車両の検査位置へのセ・ントによるスタート信
号を取込む入力ボートである。Arithmetic processing is performed by the CPU 14 based on the inspection program stored in the memory 13. Reference numeral 15 denotes an input port for receiving the vehicle type setting button group 16 and a start signal sent to the inspection position of the vehicle.

１８はビデオＲＡＭ、１９はコントローラで、それらに
より画像情報を映像信号に変換し、モニタ用テレビ乙に
画像表示するようになっている。18 is a video RAM, and 19 is a controller, which converts image information into a video signal and displays the image on a monitor TV.

２０は自動調整手段で、入出力ボート２１を通じてヘッ
ドライト２の取付は位置の調整動作が制御されるよう番
こなっている。この補正手段２０は、第２図に示すよう
に、上述した補正長さに基づいてヘッドライト２の取付
調整ネジ（図示せず）を位置調整工具を回転させて調整
するもので、へ・ｙドライド２の軸線方向の走行レール
２２．２２上をラックピニオン機構により走行する走行
台車２６と、該走行台車２３に設けられ走行レール２２
に直交する方向に移動可能な可動部材２４と、該可動部
材２４の先端にブラケット２５を介して支持されパルス
モータ２６にて回転される位置調整工具であるドライバ
２７とを有する。Reference numeral 20 denotes automatic adjustment means, and the installation of the headlight 2 is controlled through the input/output boat 21 so that the adjustment operation of the position thereof is controlled. As shown in FIG. 2, this correction means 20 adjusts the mounting adjustment screw (not shown) of the headlight 2 by rotating a position adjustment tool based on the above-mentioned correction length. A running bogie 26 that runs on running rails 22 and 22 in the axial direction of the dry drive 2 by a rack and pinion mechanism, and a running rail 22 provided on the running bogie 23.
The movable member 24 is movable in a direction orthogonal to the movable member 24 , and a driver 27 is a position adjustment tool that is supported at the tip of the movable member 24 via a bracket 25 and rotated by a pulse motor 26 .

上記のように構成すれは％第３図に示すように。The above configuration is as shown in Figure 3.

先ず、ブロックＢ１においてテレビカメラ５によリスク
リーン４上におけるヘッドライト２の投光乙による照度
を映像信号として検出し、ブロックＢ２においてＡ　／
　Ｄ変換器１２によりＡ　／　Ｄ変換され、メモリ１３
に照度データとして記憶される。First, in block B1, the illuminance of the headlights 2 projected onto the screen 4 is detected by the television camera 5 as a video signal, and in block B2, the illuminance A/
A/D converted by the D converter 12 and stored in the memory 13
is stored as illuminance data.

また、車種設定釦群１６の操作により対応車種の基準メ
モリが取り出され、検査車両がセットされたというスタ
ート信号で基準メモリの設定合格範囲ＳをビデオＲＡＭ
１８及びコントローラ１９を介してモニタ用テレビ乙に
表示する。In addition, by operating the vehicle model setting button group 16, the standard memory for the corresponding vehicle model is taken out, and at the start signal indicating that the test vehicle has been set, the setting pass range S of the standard memory is transferred to the video RAM.
18 and the controller 19 to display it on the monitor TV B.

ブロックＢ３においては、検出された照度データを換算
して数値化する。すなわち、スクリーン４上を、、ｚ６
ｇｘ去郊の区域Ｗに分割し、最も明るい区域Ｗを、２ｊ
６、最も暗い区域Ｗをθとすることにより各区域Ｗを照
度によりランク付けし、ブロックＢ４において、第７図
に示すようにパターン化する。これによって、バッテリ
の電圧低下による照度低下などの照度差による影響がな
くなり、検査の精度低下が防止される。In block B3, the detected illuminance data is converted into numerical values. In other words, on the screen 4, z6
Divide into areas W around gx suburbs, and define the brightest area W as 2j
6. By setting the darkest area W to θ, each area W is ranked according to illuminance, and in block B4, it is patterned as shown in FIG. This eliminates the influence of differences in illuminance, such as a decrease in illuminance due to a drop in battery voltage, and prevents a decrease in inspection accuracy.

ブロックＢ５において、予め設定されている照度差でも
って等照度閉曲線ｔ３　（第５図参照）を求め、照度中
心Ｐ１を決定する。それから、照度中心Ｐ１を通る縦方
向の直線１３に沿って該直線１３の方向における等照度
閉曲線Ｌ３のピッチを求める。In block B5, an isoluminance closed curve t3 (see FIG. 5) is determined using the preset illuminance difference, and the illuminance center P1 is determined. Then, along a vertical straight line 13 passing through the illuminance center P1, the pitch of the isoluminance closed curve L3 in the direction of the straight line 13 is determined.

ブロックＢ６において、」１記ピッチが設定値以上とな
る明暗境界点Ｐ２及びそれを通る明暗境界線Ｌ１を検出
する。この状態ではまだはっきりとした線になっていな
いので、ブロックＢ７において、相関関係を求め、回帰
式の手法により前記明暗境界線Ｌ１を直線化する（第２
図参照）。なお。In block B6, a bright/dark boundary point P2 where the pitch is greater than or equal to a set value and a bright/dark boundary line L1 passing through the bright/dark boundary point P2 are detected. In this state, it is not yet a clear line, so in block B7, the correlation is determined and the light-dark boundary line L1 is linearized using a regression equation method (second
(see figure). In addition.

回帰係数は予め入力されたものを用いる。The regression coefficients input in advance are used.

ブロックＢ８において、モニタ用テレビ６に、直線化し
た明暗境界線ｔ２を１合格範囲Ｓととも番こ表示し、ブ
ロックＢ９で比較可能となる。In block B8, the linearized bright/dark boundary line t2 is displayed on the monitor television 6 together with the 1-pass range S, and comparison is possible in block B9.

しかして、ブロックＢＩＯで明暗境界線Ｌ２の交点Ｐ３
と、基準となる明暗境界線Ｌ４の交点Ｐ４との間の補正
長さく補正値）を演算し、プロ・ンクＢｌｌでそれに基
づいて自動調整手段２０にて自動　　　　１調整する。Therefore, in block BIO, the intersection P3 of the bright and dark boundary line L2
and the intersection point P4 of the light/dark boundary line L4 serving as a reference (a correction value) is calculated, and the automatic adjustment means 20 automatically adjusts the length based on the correction value in the pro-nk Bll.

次いで、上記データ処理手段７の処理の流れを第７図に
沿って説明する。Next, the flow of processing by the data processing means 7 will be explained with reference to FIG.

スタートすると、ステップＳ１で検査位置での車両の有
無が判定され、ＹＥＳの場合はステップＳ２　へ移行す
る一方、ＮＯの場合はこれを繰返す。When the process starts, the presence or absence of a vehicle at the inspection position is determined in step S1. If YES, the process moves to step S2, while if NO, this process is repeated.

ステップＳ２では車種選択が終了しているか否かが判定
され、ＹＥＳの場合はステップＳ３でメモリ１３より対
応車種についての基準メモリを取出シモニタ用テレビ６
に表示するとともに、ステップＳ４でテレビカメラ５の
検出値をＡ　／　Ｄ変換しメモリ１３に記憶する一方、
ＮＯの場合はステップＳ２を繰返す。In step S2, it is determined whether the car model selection has been completed, and if YES, in step S3, the reference memory for the compatible car model is extracted from the memory 13 and transferred to the monitor television 6.
At the same time, in step S4, the detection value of the television camera 5 is A/D converted and stored in the memory 13.
If NO, repeat step S2.

ステップＳ４の後、ステップＳ５で前述した如く等照度
閉曲線を求め、ステップＳ６で照度中心Ｐ１を決定し、
ステップＳ７で明暗境界線Ｌ１を検出する。ステップＳ
８では前記明暗境界線Ｌ１−を回帰式により直線化し、
折れ点Ｐ３を検出し、ステップＳ９でモニタ用テレビ６
に表示する。After step S4, the isoluminance closed curve is determined as described above in step S5, and the illuminance center P1 is determined in step S6.
In step S7, a bright/dark boundary line L1 is detected. Step S
8, the light-dark boundary line L1- is linearized by a regression equation,
The bending point P3 is detected, and in step S9 the monitor TV 6
to be displayed.

ステップＳＩＯでモニタ用テレビ６においてステップＳ
３とステップＳ９による表示を比較し、折Φ れ点Ｐ３が直線１３略合致しかつ明暗境界線Ｌ２（８）
゛ が設定合格範囲Ｓ内にあるか否かをステップＳｌｌで判
定する。ＹＥＳの場合はステップＳ１へ’Ｐる一方、Ｎ
Ｏの場合はステップ５１２で補正量が算出され、ステッ
プＳ１３で前記補正量に基づいて目動調整手段２０にて
自動調整され、ステップＳ４に戻り、設定合格範囲Ｓ内
にあるか否かの判定を繰返す。Step SIO on the monitor TV 6
3 and the display in step S9, the fold point P3 almost matches the straight line 13 and the bright/dark boundary line L2 (8)
It is determined in step Sll whether or not " is within the set acceptance range S. If YES, go to step S1, while N
In the case of O, a correction amount is calculated in step 512, and in step S13, the eye movement adjusting means 20 automatically adjusts based on the correction amount, and the process returns to step S4, where it is determined whether or not it is within the set pass range S. Repeat.

なお、上記実施例では、モニタ用テレビ６を設け、明暗
境界線Ｌ２が合格範囲Ｓ内にあるか否かを視覚によって
も確認できるようにしているが、自動調整されることか
らモニタ用テレビ６を必ず設ける必要はなく、省略する
こともできる。In the above embodiment, the monitor television 6 is provided so that it is possible to visually confirm whether the bright/dark boundary line L2 is within the passing range S. However, since the automatic adjustment is performed, the monitor television 6 It is not necessary to always provide and can be omitted.

（発明の効果） 本発明は、上記のように、照度のランク付けによりパタ
ーン化したため、ヘッドライトの明暗及びランプの種類
にかかわりなく、自動車のヘッドライトの取付は位置を
精度よくかつ効率よく自動調整することができる。(Effects of the Invention) As described above, the present invention creates patterns based on illuminance rankings, so regardless of the brightness and darkness of the headlights and the type of lamp, the installation of automobile headlights can be done automatically and accurately and efficiently. Can be adjusted.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明の実施例を示し、第１図はヘッドライトの
取付は位置調整装置の全体構成図、第２図はデータ処理
手段の構成図、＄３図は検査の流れを示すブロック図、
第り図はパターン化の一例を示す説明図、第５図は等照
度閉曲線と明暗境界線との関係を示す図、第ｚ図は直線
化された明暗境界線と設定合格範囲との関係を示す図、
第７図はデータ処理手段の処理の流れを示す流れ図、第
２図は自動調整手段の一例の説明図である。 １・・・・・［＋車、２・・・・・・ヘッドライト、３
・・・・・・投光、４・・・・・・スクリーン、５・・
・・・・テレビカメラ、６・・・・・・モニタ用テレビ
、７・・・・・・データ処理手段、２０・・・・・・自
動調整手段The drawings show embodiments of the present invention; FIG. 1 is a general configuration diagram of a position adjustment device for mounting a headlight, FIG. 2 is a configuration diagram of a data processing means, and FIG. 3 is a block diagram showing the flow of inspection.
Figure 2 is an explanatory diagram showing an example of patterning, Figure 5 is a diagram showing the relationship between the isoluminance closed curve and the bright/dark boundary line, and Figure z is the relationship between the straightened bright/dark boundary line and the set passing range. The figure shown,
FIG. 7 is a flowchart showing the processing flow of the data processing means, and FIG. 2 is an explanatory diagram of an example of the automatic adjustment means. 1...[+car, 2...headlights, 3]
...Light projection, 4...Screen, 5...
... TV camera, 6 ... Monitor television, 7 ... Data processing means, 20 ... Automatic adjustment means

Claims (1)

【特許請求の範囲】[Claims] （１）自動車のヘッドライトの投光における明暗境界線
の検出によって取付け位置を自動調整する装置であって
、自動車の前方に配設されヘッドライトが投光されるス
クリーンと、該スクリーン上におけるヘッドライトの投
光を検出するテレビカメラと、該テレビカメラの検出値
に所定個数の照度のランク付けをして前記スクリーン上
を碁盤目状にパターン化し、等ランクの部位を結んで等
照度線を作成するとともに最高ランクの部位から照度中
心を決定し、該照度中心を通る上下方向の直線について
等照度線のピッチ間隔を演算して所定ピッチ以上の間隔
となる境界点を検出し、該境界点を通る明暗境界線の水
平部と傾斜部との交点と、基準となる明暗境界線の交点
との間の補正長さを演算するデータ処理手段と、前記補
正長さに基づいてヘッドライトの位置調整工具を回転さ
せて調整する自動調整手段とを具備することを特徴とす
るヘッドライトの取付け位置調整装置。(1) A device that automatically adjusts the mounting position by detecting the bright/dark boundary line in the emission of headlights of a car, which includes a screen placed in front of the car from which the headlights are emitted, and a headlight on the screen. A television camera detects the projection of light, and a predetermined number of illuminance rankings are applied to the detected values of the television camera to form a checkerboard pattern on the screen, and isoluminance lines are created by connecting parts of the same rank. At the same time, the center of illuminance is determined from the part with the highest rank, the pitch interval of the isoluminance lines is calculated for the vertical straight line passing through the center of illuminance, and the boundary points having an interval of a predetermined pitch or more are detected. a data processing means for calculating a correction length between the intersection of the horizontal part and the slope of the bright-dark boundary line passing through and the intersection point of the bright-dark boundary line serving as a reference; 1. A headlight mounting position adjustment device comprising: automatic adjustment means for adjusting by rotating an adjustment tool.
JP13866384A 1984-07-04 1984-07-04 Adjusting device of fitting position of headlight Granted JPS6117933A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13866384A JPS6117933A (en) 1984-07-04 1984-07-04 Adjusting device of fitting position of headlight

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13866384A JPS6117933A (en) 1984-07-04 1984-07-04 Adjusting device of fitting position of headlight

Publications (2)

Publication Number Publication Date
JPS6117933A true JPS6117933A (en) 1986-01-25
JPH0544979B2 JPH0544979B2 (en) 1993-07-07

Family

ID=15227224

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13866384A Granted JPS6117933A (en) 1984-07-04 1984-07-04 Adjusting device of fitting position of headlight

Country Status (1)

Country Link
JP (1) JPS6117933A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6466534A (en) * 1987-06-23 1989-03-13 Hopukinsu Mfg Corp Method and apparatus for depicting sight and lighting pattern for automobile head lamp
EP0458586A2 (en) * 1990-05-21 1991-11-27 Nissan Motor Co., Ltd. Method of regulating optical axes of headlights for automotive vehicle
CN106768901A (en) * 2016-12-06 2017-05-31 吴明 The detection method of motor vehicle dipped headlight light beam intermediate height

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6466534A (en) * 1987-06-23 1989-03-13 Hopukinsu Mfg Corp Method and apparatus for depicting sight and lighting pattern for automobile head lamp
EP0458586A2 (en) * 1990-05-21 1991-11-27 Nissan Motor Co., Ltd. Method of regulating optical axes of headlights for automotive vehicle
CN106768901A (en) * 2016-12-06 2017-05-31 吴明 The detection method of motor vehicle dipped headlight light beam intermediate height

Also Published As

Publication number Publication date
JPH0544979B2 (en) 1993-07-07

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