JPH045008U - - Google Patents
Info
- Publication number
- JPH045008U JPH045008U JP4308890U JP4308890U JPH045008U JP H045008 U JPH045008 U JP H045008U JP 4308890 U JP4308890 U JP 4308890U JP 4308890 U JP4308890 U JP 4308890U JP H045008 U JPH045008 U JP H045008U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- lenses
- light distribution
- movable
- variable light
- 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
Links
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第1図は本考案に係る配光可変型前方照明具の
レンズ装置の原理を示す拡散照射時のレンズ系の
位置を示す説明図、第2図は同スポツト照射時の
レンズ系の位置を示す説明図、第3図は同移動レ
ンズの駆動機構の一実施例を示す一部切欠した側
断面図、第4図は同正面図、第5図は第4図−
線におけるX軸駆動機構部を示す一部切欠した
平面図、第6図は第4図における−線断面図
Y軸駆動機構部を示す一部切欠した平面図、第7
図a及びbは従来のレンズ系の原理を示す説明図
である。
1……プロジエクタランプ、2……コリメータ
レンズ、4……エイミング軸、6……シリンドリ
カル凹レンズ、7……レンズ駆動機構、8……移
動レンズ、9……X軸駆動機構部、10……Y軸
駆動機構部、11……レンズキヤリア、12……
Y螺子軸、13……レンズマウント、14……Y
軸ガイド、15……X軸駆動直流モータ、16…
…ベアリングホルダ、17……X螺子軸、20…
…X軸ポテンシヨメータ、21……Y軸駆動直流
モータ、24……管軸、27……スライド軸、2
8,29……ベーベルギヤ、30……Y軸ポテン
シヨメータ。
Fig. 1 is an explanatory diagram showing the position of the lens system during diffuse irradiation, showing the principle of the lens device of the variable light distribution type front lighting device according to the present invention, and Fig. 2 shows the position of the lens system during spot irradiation. 3 is a partially cutaway side sectional view showing an embodiment of the drive mechanism of the moving lens, FIG. 4 is a front view of the same, and FIG.
FIG. 6 is a partially cutaway plan view showing the X-axis drive mechanism section taken along the line; FIG. 6 is a partially cutaway plan view showing the Y-axis drive mechanism section; FIG.
Figures a and b are explanatory diagrams showing the principle of a conventional lens system. DESCRIPTION OF SYMBOLS 1... Projector lamp, 2... Collimator lens, 4... Aiming axis, 6... Cylindrical concave lens, 7... Lens drive mechanism, 8... Moving lens, 9... X-axis drive mechanism section, 10... Y-axis drive mechanism section, 11... Lens carrier, 12...
Y screw shaft, 13...lens mount, 14...Y
Axis guide, 15...X-axis drive DC motor, 16...
...Bearing holder, 17...X screw shaft, 20...
...X-axis potentiometer, 21...Y-axis drive DC motor, 24...tube shaft, 27...slide axis, 2
8, 29...Bevel gear, 30...Y-axis potentiometer.
Claims (1)
レンズを設け、両レンズの距離及び/又は位置を
変動して照射光の配光を可変制御する配光可変型
前方照明具において、 前記2枚のレンズの内プロジエクタランプ側の
レンズをシリンドリカルな凸レンズから成る移動
レンズ、前方側をシリンドリカルな凹レンズから
成る固定レンズとすると共に、前記移動レンズの
可能範囲を両レンズを近接したとき移動レンズの
前方側焦点が固定レンズの前方焦点と一致するよ
うに構成したことを特徴とする 配光可変型前方照明具のレンズ装置。 (2) シリンドリカルな凸レンズから成る移動レ
ンズが、フレネル型レンズであることを特徴とす
る請求項1記載の 配光可変型前方照明具のレンズ装置。 (3) 移動レンズのレンズステツプを配列した方
向のレンズ形状が、非球面の断面構造に成ること
を特徴とする請求項2記載の 配光可変型前方照明具のレンズ装置。[Scope of Claim for Utility Model Registration] (1) Light distribution in which two lenses are provided on the front optical axis of the projector lamp, and the distance and/or position of both lenses is varied to variably control the distribution of irradiated light. In the variable front lighting device, the lens on the projector lamp side of the two lenses is a movable lens made of a cylindrical convex lens, and the front side is a fixed lens made of a cylindrical concave lens, and the possible range of the movable lens is 1. A lens device for a variable light distribution front illuminator, characterized in that the front focus of the movable lens matches the front focus of the fixed lens when both lenses are brought close to each other. (2) The lens device for a variable light distribution front illuminator according to claim 1, wherein the movable lens made of a cylindrical convex lens is a Fresnel type lens. (3) The lens device for a variable light distribution type front illuminator according to claim 2, wherein the lens shape in the direction in which the lens steps of the movable lens are arranged has an aspheric cross-sectional structure.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990043088U JP2540391Y2 (en) | 1990-04-24 | 1990-04-24 | Lens device for variable light distribution type front lighting fixture |
US07/689,427 US5138540A (en) | 1990-04-24 | 1991-04-23 | Variable light distribution type headlamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990043088U JP2540391Y2 (en) | 1990-04-24 | 1990-04-24 | Lens device for variable light distribution type front lighting fixture |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH045008U true JPH045008U (en) | 1992-01-17 |
JP2540391Y2 JP2540391Y2 (en) | 1997-07-02 |
Family
ID=31555205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1990043088U Expired - Lifetime JP2540391Y2 (en) | 1990-04-24 | 1990-04-24 | Lens device for variable light distribution type front lighting fixture |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2540391Y2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001035215A (en) * | 1999-07-23 | 2001-02-09 | Ichikoh Ind Ltd | Headlamp and manufacture of reflector in the headlamp |
JP2007114641A (en) * | 2005-10-24 | 2007-05-10 | Fujifilm Corp | Digital camera |
KR101021929B1 (en) * | 2008-07-25 | 2011-03-16 | 에스엘 주식회사 | Lamp assembly for vehicle |
JP2012119250A (en) * | 2010-12-03 | 2012-06-21 | Tatsumi Chuo Keiei Kenkyusho:Kk | Elliptic irradiation projector |
JP2017004661A (en) * | 2015-06-08 | 2017-01-05 | スタンレー電気株式会社 | Vehicle lamp |
JP2018116801A (en) * | 2017-01-17 | 2018-07-26 | 市光工業株式会社 | Vehicular lighting fixture |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57140101U (en) * | 1981-02-27 | 1982-09-02 | ||
JPH0225101U (en) * | 1988-08-05 | 1990-02-19 |
-
1990
- 1990-04-24 JP JP1990043088U patent/JP2540391Y2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57140101U (en) * | 1981-02-27 | 1982-09-02 | ||
JPH0225101U (en) * | 1988-08-05 | 1990-02-19 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001035215A (en) * | 1999-07-23 | 2001-02-09 | Ichikoh Ind Ltd | Headlamp and manufacture of reflector in the headlamp |
JP2007114641A (en) * | 2005-10-24 | 2007-05-10 | Fujifilm Corp | Digital camera |
KR101021929B1 (en) * | 2008-07-25 | 2011-03-16 | 에스엘 주식회사 | Lamp assembly for vehicle |
JP2012119250A (en) * | 2010-12-03 | 2012-06-21 | Tatsumi Chuo Keiei Kenkyusho:Kk | Elliptic irradiation projector |
JP2017004661A (en) * | 2015-06-08 | 2017-01-05 | スタンレー電気株式会社 | Vehicle lamp |
JP2018116801A (en) * | 2017-01-17 | 2018-07-26 | 市光工業株式会社 | Vehicular lighting fixture |
Also Published As
Publication number | Publication date |
---|---|
JP2540391Y2 (en) | 1997-07-02 |
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