JPH0511050A - Radar for measuring distance between vehicles - Google Patents
Radar for measuring distance between vehiclesInfo
- Publication number
- JPH0511050A JPH0511050A JP3161745A JP16174591A JPH0511050A JP H0511050 A JPH0511050 A JP H0511050A JP 3161745 A JP3161745 A JP 3161745A JP 16174591 A JP16174591 A JP 16174591A JP H0511050 A JPH0511050 A JP H0511050A
- Authority
- JP
- Japan
- Prior art keywords
- laser
- lens
- light
- machined
- flat surface
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/0017—Devices integrating an element dedicated to another function
- B60Q1/0023—Devices integrating an element dedicated to another function the element being a sensor, e.g. distance sensor, camera
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、レーザレーダ装置の発
光部及び受光部を前照灯ケース内に具備せしめた車間距
離測定レーダに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inter-vehicle distance measuring radar in which a light emitting portion and a light receiving portion of a laser radar device are provided in a headlight case.
【0002】[0002]
【従来の技術】前後に位置される走行車の車間を後続車
によって測距するために使用される従来の車間距離測定
レーダには図1及び図2に示す如き構造のものがある。
すなわちこのレーダは、ヘッドランプバルブ1を内装す
るヘッドランプケース2内に、レーザ発光部3とレーザ
受光部4を組込み、さらにそのヘッドランプケース2の
前面には、透明なるヘッドランプレンズ5を被着して、
ヘッドランプバルブ1、レーザ発光部3及びレーザ受光
部4の防水、防塵を可能としているものである。2. Description of the Related Art There is a conventional inter-vehicle distance measuring radar used to measure the distance between front and rear traveling vehicles by a succeeding vehicle, as shown in FIGS.
That is, in this radar, a laser light emitting portion 3 and a laser light receiving portion 4 are incorporated in a headlamp case 2 that houses a headlamp bulb 1, and a transparent headlamp lens 5 is placed on the front surface of the headlamp case 2. Wear
The headlamp bulb 1, the laser emitting section 3 and the laser receiving section 4 are waterproof and dustproof.
【0003】[0003]
【発明が解決しようとする課題】ところが、一般的なヘ
ッドランプレンズ5にあっては、図2に示すように、光
の集光又は光の輝度を高めるためにプリズム加工や、曲
面加工が施されているために、このヘッドランプレンズ
5そのものに、レーザ発光部3からのレーザ光を透過さ
せると、そのプリズム面あるいは曲面によってレーザ光
が広がってしまい、その結果有効なレーザビームとなら
ずに目標物を取らえることが難かしく測距制度が低下す
るという不具合が考えられていた。However, in the general headlamp lens 5, as shown in FIG. 2, prism processing or curved surface processing is performed to condense light or increase the brightness of light. Therefore, when the laser light from the laser emitting portion 3 is transmitted through the headlamp lens 5 itself, the laser light is spread by the prism surface or the curved surface, and as a result, an effective laser beam cannot be obtained. The problem was that it was difficult to catch the target object and the ranging system deteriorated.
【0004】[0004]
【課題を解決するための手段】本発明はかかる従来の不
具合を改善するためなされたもので、ヘッドランプやフ
ォグランプ等の前照灯、例えばヘッドランプのレンズに
おけるレーザビーム透過部が、そのレンズの表裏両面が
平行にして平坦面である平面部に形成して、レーザ発光
部から反射されるレーザビームを拡散せしめることなく
所定の目標物へ照射することができる車間距離測定レー
ダを提供することにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the related art. Headlights such as headlamps and fog lamps, for example, a laser beam transmitting portion of a lens of a headlamp has a To provide an inter-vehicle distance measuring radar in which both front and back surfaces are parallel to each other and are formed on a flat surface portion so that a laser beam reflected from a laser emitting portion can be irradiated to a predetermined target without being diffused. is there.
【0005】[0005]
【実施例】以下に本発明を図面に示す実施例に基いて詳
細に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on the embodiments shown in the drawings.
【0006】図3において、11は前照灯の一例として
従来例で説明したと同様のヘッドランプバルブ(図示せ
ず)と、レーザ発光部12と、レーザ受光部13を内装
しているヘッドランプケースであって、このヘッドラン
プケース11の正面開口部には、表面側が凸曲面となる
ヘッドランプレンズ14が被着されている。このヘッド
ランプレンズ14の内面において、そのバルブ光の透光
部は、プリズム加工が施されているが、上記レーザ発光
部12からのレーザ光の透光部は平坦加工部15に形成
されている。In FIG. 3, reference numeral 11 is an example of a headlamp, which has a headlamp bulb (not shown) similar to that described in the conventional example, a laser emitting section 12, and a laser receiving section 13 as a headlamp. A headlamp lens 14 having a convex curved surface is attached to the front opening of the headlamp case 11 as a case. On the inner surface of the headlamp lens 14, the light-transmitting portion of the bulb light is prism processed, but the light-transmitting portion of the laser light from the laser emitting portion 12 is formed on the flattened portion 15. ..
【0007】この平坦加工部15は、図4に示す如く、
そのヘッドランプレンズ14の成形時において該レンズ
14の内面を平坦面に研磨加工しやすいように予め凸面
形状となして、この凸面部を二次加工によって平坦面1
6に研磨加工し平坦面となす。次いでそのレンズ14外
側面における平坦加工部15の対面する位置を、上記平
坦加工部15と平行な平坦面16に研磨加工することに
より、上記凸形状の平坦加工部15により、研磨加工位
置の確実性、加工の容易性が得られる。As shown in FIG. 4, the flattened portion 15 has
When the headlamp lens 14 is molded, the inner surface of the lens 14 is formed into a convex shape in advance so that it can be easily polished into a flat surface.
Polished to 6 to form a flat surface. Then, the facing surface of the flattened portion 15 on the outer side surface of the lens 14 is ground to a flat surface 16 parallel to the flattened portion 15, so that the convex flattened portion 15 ensures the polishing position. And the ease of processing can be obtained.
【0008】従ってこの実施例にあっては予め形成され
ているヘッドランプレンズ内面の凸面部を平坦面に研磨
し、次いでそのレンズ表面を、上記研磨面と平行となる
平坦面16に研磨することで、レーザ発光部12より発
光するレーザビームは、そのレンズ14により拡散され
ることなく、例えば直径が約15〜40mmに集光され
た細いビーム光束で目的物への照射が可能となる。また
研磨部を凸形状となしたことにより平面加工が非常にや
りやすく部分的研磨処理が安価にできる。Therefore, in this embodiment, the convex portion of the inner surface of the headlamp lens which has been formed in advance is ground to a flat surface, and then the lens surface is ground to a flat surface 16 parallel to the above-mentioned polishing surface. Then, the laser beam emitted from the laser emitting section 12 can be applied to the target object with a thin beam light flux having a diameter of about 15 to 40 mm, for example, without being diffused by the lens 14. Further, since the polishing portion is formed in a convex shape, planar processing is very easy to perform, and partial polishing processing can be inexpensive.
【0009】上記実施例は、ヘッドランプレンズ14の
形状が、表面側が凸曲面となる場合であるが、例えば表
面側が凹曲面となるヘッドランプレンズ14′の場合
は、図5,図6に示すように、その表面側に凸形状の平
坦加工部15を形成することにより、上記実施例と同様
の作用効果が得られる。In the above embodiment, the shape of the headlamp lens 14 is a convex curved surface on the front surface side. For example, the headlamp lens 14 'having a concave curved surface surface is shown in FIGS. As described above, by forming the convex-shaped flattened portion 15 on the surface side, the same effect as that of the above-described embodiment can be obtained.
【0010】また図7に示す如くヘッドランプレンズ1
4の内側面に、研磨位置を示す凹段部17予め形成し、
該凹段部17と、その凹段部17に対応する表面部を二
次加工により研磨するようにしてもよい。Further, as shown in FIG. 7, the headlamp lens 1
4, the concave step portion 17 indicating the polishing position is previously formed on the inner surface of 4,
The concave step portion 17 and the surface portion corresponding to the concave step portion 17 may be polished by secondary processing.
【0011】図8、図9はヘッドランプレンズ14のレ
ーザビーム透過部に、透孔18を形成し、この透孔18
内に予め平行なる平坦面16に形成されている透明板1
9を嵌着しめたものである。8 and 9, a through hole 18 is formed in the laser beam transmitting portion of the headlamp lens 14, and the through hole 18 is formed.
A transparent plate 1 which is previously formed on a flat surface 16 parallel to the inside
9 is fitted.
【0012】この実施例では、透明板19の平面加工が
容易であることから、レーザビーム透過部の平面精度が
一層高められ、しかも加工コストが安価となる。In this embodiment, the flatness of the transparent plate 19 is easily processed, so that the precision of the flat surface of the laser beam transmitting portion is further improved and the processing cost is reduced.
【0013】尚、上記前照灯はいずれもヘッドランプの
例を示したがフォグランプとしてもよい。Although the above headlights are all headlamps, they may be fog lamps.
【0014】[0014]
【発明の効果】以上のように本発明は、自動車両に向け
てレーザ光信号を投射し、該信号の目標車両での反射光
信号を受信して、信号の投射時から反射光信号の受信時
までの時間を測定することによって、目標車両までの距
離を知るようにした車間距離測定レーダにおいて、前記
レーザ光信号を投射する発光部12及び前記反射光信号
を受信する受光部13を前照灯ケース11内に収容する
と共に、前記レーザ光信号が透過する前照灯レンズ1
4、14′の一部表面及び裏面に表裏両面が平行である
平面部16を形成した車間距離測定レーダであるから、
これによれば、その平面部16により、該平面部を透過
するレーザビームが拡散されることがなく、従ってレー
ザビームの透過率が低下されることなく目標物へ照射さ
れるので、測定信頼性の高い車間距離測定が実現すると
いう効果が得られる。As described above, according to the present invention, the laser light signal is projected toward the motor vehicle, the reflected light signal at the target vehicle of the signal is received, and the reflected light signal is received from the time when the signal is projected. In an inter-vehicle distance measuring radar in which the distance to a target vehicle is known by measuring the time to time, a light emitting unit 12 that projects the laser light signal and a light receiving unit 13 that receives the reflected light signal are headlighted. A headlamp lens 1 which is housed in a lamp case 11 and through which the laser light signal is transmitted
Since it is a vehicle-to-vehicle distance measuring radar in which a flat surface portion 16 having front and back surfaces parallel to each other is formed on a part of the front and back surfaces of 4 and 14 ',
According to this, the flat portion 16 does not diffuse the laser beam that passes through the flat portion, and therefore the laser beam is applied to the target object without lowering the transmittance, so that the measurement reliability is improved. It is possible to obtain the effect that the high inter-vehicle distance measurement is realized.
【図1】従来例の説明斜視図。FIG. 1 is an explanatory perspective view of a conventional example.
【図2】従来例の断面説明図。FIG. 2 is a sectional explanatory view of a conventional example.
【図3】本発明よりなる実施例の断面説明図。FIG. 3 is a sectional explanatory view of an example according to the present invention.
【図4】図3における要部拡大図。FIG. 4 is an enlarged view of a main part in FIG.
【図5】本発明の他の実施例の断面説明図。FIG. 5 is a sectional explanatory view of another embodiment of the present invention.
【図6】図5における要部拡大図。FIG. 6 is an enlarged view of a main part in FIG.
【図7】本発明のさらに他の実施例を示す要部拡大図。FIG. 7 is an enlarged view of a main part showing still another embodiment of the present invention.
【図8】本発明のさらに他の実施例を示す断面説明図。FIG. 8 is an explanatory sectional view showing still another embodiment of the present invention.
【図9】図8における要部拡大図。9 is an enlarged view of a main part in FIG.
11…ヘッドランプケース 12…レーザ発光部 13…レーザ受光部 14…ヘッドランプレ
ンズ 15…平坦加工部 16…平坦面 17…凹段部 18…透孔 19…透明板11 ... Headlamp case 12 ... Laser emitting part 13 ... Laser receiving part 14 ... Headlamp lens 15 ... Flat processing part 16 ... Flat surface 17 ... Recessed step part 18 ... Through hole 19 ... Transparent plate
Claims (1)
し、該信号の目標車両での反射光信号を受信して、信号
の投射時から反射光信号の受信時までの時間を測定する
ことによって、目標車両までの距離を知るようにした車
間距離測定レーダにおいて、前記レーザ光信号を投射す
る発光部(12)及び前記反射光信号を受信する受光部
(13)を前照灯ケース(11)内に収容すると共に、
前記レーザ光信号が透過する前照灯レンズ(14)(1
4′)の一部表面及び裏面に表裏両面が平行である平面
部(16)を形成したことを特徴とする車間距離測定レ
ーダ。Claim: What is claimed is: 1. A laser light signal is projected toward a motor vehicle, a reflected light signal of the signal at the target vehicle is received, and the signal is projected until the reflected light signal is received. In an inter-vehicle distance measuring radar in which the distance to a target vehicle is known by measuring the time of, a light emitting unit (12) for projecting the laser light signal and a light receiving unit (13) for receiving the reflected light signal are provided. While housed in the headlight case (11),
Headlight lens (14) (1) through which the laser light signal is transmitted
An inter-vehicle distance measuring radar characterized in that a flat surface portion (16) having front and back surfaces parallel to each other is formed on part of the front surface and the back surface of 4 ').
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3161745A JPH0511050A (en) | 1991-07-02 | 1991-07-02 | Radar for measuring distance between vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3161745A JPH0511050A (en) | 1991-07-02 | 1991-07-02 | Radar for measuring distance between vehicles |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0511050A true JPH0511050A (en) | 1993-01-19 |
Family
ID=15741083
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3161745A Pending JPH0511050A (en) | 1991-07-02 | 1991-07-02 | Radar for measuring distance between vehicles |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0511050A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10354714A1 (en) * | 2003-11-22 | 2005-06-30 | Audi Ag | Vehicle headlamp having a semiconductor light source and a control unit with a modulation device to provide modulated electromagnetic waves |
JP2008514908A (en) * | 2004-09-28 | 2008-05-08 | コンティネンタル・テーベス・アクチエンゲゼルシヤフト・ウント・コンパニー・オッフェネ・ハンデルスゲゼルシヤフト | Automobile with optical, side-periphery sensors integrated together in a flashing light |
JP2011013074A (en) * | 2009-07-01 | 2011-01-20 | Optex Co Ltd | Laser light receiving unit |
WO2017110415A1 (en) * | 2015-12-21 | 2017-06-29 | 株式会社小糸製作所 | Vehicular sensor, and vehicle provided with same |
JP2019163988A (en) * | 2018-03-19 | 2019-09-26 | 株式会社デンソーウェーブ | Laser beam transmitting member of scanning type laser radar and scanning type laser radar |
-
1991
- 1991-07-02 JP JP3161745A patent/JPH0511050A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10354714A1 (en) * | 2003-11-22 | 2005-06-30 | Audi Ag | Vehicle headlamp having a semiconductor light source and a control unit with a modulation device to provide modulated electromagnetic waves |
DE10354714B4 (en) * | 2003-11-22 | 2007-10-04 | Audi Ag | Vehicle headlight and method for operating a vehicle headlight |
JP2008514908A (en) * | 2004-09-28 | 2008-05-08 | コンティネンタル・テーベス・アクチエンゲゼルシヤフト・ウント・コンパニー・オッフェネ・ハンデルスゲゼルシヤフト | Automobile with optical, side-periphery sensors integrated together in a flashing light |
JP4921373B2 (en) * | 2004-09-28 | 2012-04-25 | コンティネンタル・テーベス・アクチエンゲゼルシヤフト・ウント・コンパニー・オッフェネ・ハンデルスゲゼルシヤフト | Automobile with optical, side-periphery sensors integrated together in a flashing light |
JP2011013074A (en) * | 2009-07-01 | 2011-01-20 | Optex Co Ltd | Laser light receiving unit |
WO2017110415A1 (en) * | 2015-12-21 | 2017-06-29 | 株式会社小糸製作所 | Vehicular sensor, and vehicle provided with same |
JPWO2017110415A1 (en) * | 2015-12-21 | 2018-10-11 | 株式会社小糸製作所 | Vehicle sensor and vehicle equipped with the same |
US11040649B2 (en) | 2015-12-21 | 2021-06-22 | Koito Manufacturing Co., Ltd. | Vehicular sensor and vehicle provided with same |
JP2019163988A (en) * | 2018-03-19 | 2019-09-26 | 株式会社デンソーウェーブ | Laser beam transmitting member of scanning type laser radar and scanning type laser radar |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS6215701A (en) | Projector for passing beam or fog lamp of automobile | |
JP2508827B2 (en) | Automotive headlights | |
JPH0511050A (en) | Radar for measuring distance between vehicles | |
JPH0939653A (en) | Vehicular indicator lamp | |
EP3581846B1 (en) | Vehicular lamp | |
JPH1083707A (en) | Vehicular lamp unit | |
EP3561374B1 (en) | Vehicular lamp | |
JP2001093311A (en) | Head lamp for dark-field device | |
EP0490292B1 (en) | Light irradiating apparatus having light emitting diode used as light source | |
US1954010A (en) | Combined tail-light and reflector signal | |
JPS5849961B2 (en) | Vehicle lights | |
US11946610B2 (en) | Vehicle lamp with rotatable movable unit for road surface pattern emission | |
JPH03110439A (en) | Optical axis adjusting device for lighting fixture for automobile | |
JPH0638105U (en) | Automotive lighting | |
JPH0314478U (en) | ||
KR101856366B1 (en) | Aspherical lens module of headlamp for vehicle | |
JPH0449764Y2 (en) | ||
JPS5817288Y2 (en) | Vehicle lights | |
JPH0684601U (en) | Projector lamp | |
JPS6348007Y2 (en) | ||
RU2020373C1 (en) | Single-mode headlight of transport vehicle | |
JPS631366Y2 (en) | ||
JPS5916361B2 (en) | Vehicle lights | |
JPS5827443Y2 (en) | Vehicle lights | |
JP3777048B2 (en) | Auxiliary floodlight for distance measurement |