JP2001052513A - Floodlight - Google Patents
FloodlightInfo
- Publication number
- JP2001052513A JP2001052513A JP11221538A JP22153899A JP2001052513A JP 2001052513 A JP2001052513 A JP 2001052513A JP 11221538 A JP11221538 A JP 11221538A JP 22153899 A JP22153899 A JP 22153899A JP 2001052513 A JP2001052513 A JP 2001052513A
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- lens
- light
- curvature
- longitudinal direction
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、投光装置に関し、
特に、ＶＩＣＳ（道路交通情報通信システム）に用いら
れる車載用光ビーコン情報投光装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light emitting device,
In particular, the present invention relates to an in-vehicle optical beacon information light emitting device used in a VICS (road traffic information communication system).
【０００２】[0002]
【従来の技術】従来の車載用光ビーコン情報投受光装置
は、特開平１０―３８９９１号公報に記載されている。
この投受光装置は複数のＬＥＤ（発光ダイオード）とＰ
Ｄ（フォトダイオード）とを同一回路基板上に設けて成
る。このような車載用光ビーコン情報投受光装置に用い
られる投光装置として、特開平８−２７２３１９号公報
に記載のものが考案されている。2. Description of the Related Art A conventional on-vehicle optical beacon information transmitting / receiving device is disclosed in Japanese Patent Application Laid-Open No. 10-38991.
This light emitting and receiving device is composed of a plurality of LEDs (light emitting diodes) and P
D (photodiode) is provided on the same circuit board. Japanese Patent Application Laid-Open No. 8-272319 has proposed a light projecting device used in such a vehicle-mounted optical beacon information projecting / receiving device.
【０００３】[0003]
【発明が解決しようとする課題】上述の投光装置はＶＩ
ＣＳ用光源としては優れているものの光出射効率の向上
が望まれてきた。本発明はこのような課題に鑑みてなさ
れたものであり、光出射効率を向上可能な投光装置を提
供することを目的とする。SUMMARY OF THE INVENTION The above-mentioned light projecting device is VI
Although it is excellent as a light source for CS, it has been desired to improve the light emission efficiency. The present invention has been made in view of such a problem, and has as its object to provide a light projecting device capable of improving light emission efficiency.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するた
め、本発明に係る投光装置は、光出射用開口を有するパ
ッケージ本体と、光出射用開口内に配置された複数の発
光素子と、光出射用開口を塞ぐようにパッケージ本体に
取付けられた発光素子用レンズとを備える投光装置にお
いて、複数の発光素子はパッケージ本体の長手方向に沿
って配列され、発光素子用レンズの外側表面は曲率中心
が前記長手方向に平行な線分となるシリンドリカルレン
ズを構成し、発光素子用レンズの内側表面はシリンドリ
カルレンズ群を構成し、シリンドリカルレンズ群におけ
るそれぞれのレンズの曲率中心は、複数の発光素子のそ
れぞれの光出射方向延長線上に位置すると共に長手方向
及び光出射方向の双方に直交する線分となることを特徴
とする。In order to solve the above problems, a light projecting device according to the present invention comprises a package body having a light emitting opening, a plurality of light emitting elements arranged in the light emitting opening, A light emitting device including a light emitting element lens attached to the package body so as to cover the light emitting opening, wherein the plurality of light emitting elements are arranged along the longitudinal direction of the package body, and the outer surface of the light emitting element lens is The center of curvature constitutes a cylindrical lens having a line segment parallel to the longitudinal direction, the inner surface of the light emitting element lens constitutes a cylindrical lens group, and the center of curvature of each lens in the cylindrical lens group has a plurality of light emitting elements. Are located on the extension lines of the respective light emitting directions and are orthogonal to both the longitudinal direction and the light emitting direction.
【０００５】また、発光素子用レンズの内側表面が凸レ
ンズ群を構成し、凸レンズ群におけるそれぞれのレンズ
の曲率中心は、複数の発光素子のそれぞれの光出射方向
延長線上に位置することとしてもよい。The inner surface of the light emitting element lens may form a convex lens group, and the center of curvature of each lens in the convex lens group may be located on an extension line of each of the plurality of light emitting elements in the light emitting direction.
【０００６】これらの投光装置においては、発光素子用
レンズの内側表面及び外側表面によって発光素子からの
光が効率的に集光される。In these light projecting devices, light from the light emitting element is efficiently collected by the inner surface and the outer surface of the light emitting element lens.
【０００７】シリンドリカルレンズの曲率半径は、シリ
ンドリカルレンズ群におけるそれぞれのレンズの曲率半
径よりも大きいことが好ましい。また、シリンドリカル
レンズの曲率半径は、凸レンズ群におけるそれぞれのレ
ンズの曲率半径よりも大きいことが好ましい。外側表面
は内側表面よりも発光素子から遠いため、このシリンド
リカルレンズの曲率半径を大きくしても所望の指向性を
得ることができる。これにより、発光素子用レンズの厚
みを減少させることができる。The radius of curvature of the cylindrical lens is preferably larger than the radius of curvature of each lens in the cylindrical lens group. Further, it is preferable that the radius of curvature of the cylindrical lens is larger than the radius of curvature of each lens in the convex lens group. Since the outer surface is farther from the light emitting element than the inner surface, a desired directivity can be obtained even if the radius of curvature of the cylindrical lens is increased. Thus, the thickness of the light emitting element lens can be reduced.
【０００８】[0008]
【発明の実施の形態】以下、発明の実施の形態に係る投
光装置について説明する。同一要素又は同一機能を有す
る要素には同一符号を用いることとし、重複する説明は
省略する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a light projecting device according to an embodiment of the present invention will be described. The same elements or elements having the same functions will be denoted by the same reference symbols, without redundant description.
【０００９】図１は投光装置主要部の平面図、図２は投
光装置主要部の正面図、図３は投光装置主要部の右側面
図である。FIG. 1 is a plan view of the main part of the light emitting device, FIG. 2 is a front view of the main part of the light emitting device, and FIG. 3 is a right side view of the main part of the light emitting device.
【００１０】本実施形態に係る投光装置は、剛性を有す
る板状導電体であるリードフレームの一方面側（上面
側）に光出射用開口１ｏｐを有するように樹脂成形され
てなるパッケージ本体Ｈと、第１開口１ｏｐ内の当該リ
ードフレーム上に取付けられた複数の赤外線発光素子Ｌ
ＥＤ１，ＬＥＤ２、ＬＥＤ３，ＬＥＤ４，ＬＥＤ５，Ｌ
ＥＤ６（発光ダイオード）と、第１開口１ｏｐを塞ぐよ
うにパッケージ本体Ｈに取付けられた発光素子用レンズ
Ｌとを備えている。The light projecting device according to the present embodiment is a package body H formed by resin molding so as to have a light emitting opening 1op on one surface side (upper surface side) of a lead frame which is a rigid plate-shaped conductor. And a plurality of infrared light emitting elements L mounted on the lead frame in the first opening 1op
ED1, LED2, LED3, LED4, LED5, L
The light emitting device includes an ED 6 (light emitting diode) and a light emitting element lens L attached to the package body H so as to close the first opening 1op.
【００１１】パッケージ本体Ｈは開口１ｏｐを有するよ
うに樹脂成形されてなる。パッケージ本体Ｈを構成する
樹脂材料としては、耐熱性樹脂であるＰＰＳ、液晶ポリ
マー、エポキシ樹脂などを用いる。The package body H is formed by resin molding so as to have an opening 1op. As a resin material forming the package body H, a heat-resistant resin such as PPS, a liquid crystal polymer, an epoxy resin, or the like is used.
【００１２】各発光素子ＬＥＤ１〜ＬＥＤ６は、リード
フレームのダイパッド部（１Ｄ〜６Ｄ）に符号を付す）
にダイボンディングされる。発光素子用レンズＬは、開
口１ｏｐを塞ぐようにパッケージ本体Ｈに取付けられ、
各ダイパッド部はパッケージ本体Ｈ外部に露出したアウ
ターリード部１Ｆ〜６Ｆ，１Ｂ〜６Ｂに接続されてい
る。[0012] Each of the light emitting elements LED1 to LED6 is assigned a reference numeral to a die pad portion (1D to 6D) of a lead frame.
Is die bonded. The light emitting element lens L is attached to the package body H so as to close the opening 1op,
Each die pad portion is connected to the outer lead portions 1F to 6F and 1B to 6B exposed to the outside of the package body H.
【００１３】発光素子ＬＥＤ１、ＬＥＤ２、ＬＥＤ３は
直列に接続され、発光素子ＬＥＤ４、ＬＥＤ５、ＬＥＤ
６は直列に接続され、それぞれの発光素子群はダイパッ
ド部３Ｄ，４Ｄを共通電極として並列に接続されてい
る。The light emitting elements LED1, LED2, LED3 are connected in series, and the light emitting elements LED4, LED5, LED
6 are connected in series, and the respective light emitting element groups are connected in parallel using the die pads 3D and 4D as common electrodes.
【００１４】これらのアウターリード部とダイパッド部
との間のリードフレームの領域はインナーリード部であ
る。また、製造初期においてはアウターリード部の端部
を接続する板状導電体からなる枠体を含めてリードフレ
ームを構成しているが、これは各素子取り付け後に除去
される。The region of the lead frame between the outer lead portion and the die pad portion is an inner lead portion. In the early stage of manufacturing, the lead frame is configured to include a frame made of a plate-shaped conductor connecting the ends of the outer lead portions, but this is removed after each element is attached.
【００１５】赤外線に対して透明な樹脂材料が開口１ｏ
ｐ内の底面上に被覆されており、例えば、これはシリコ
ーン樹脂等の耐熱性、可撓性、耐薬品性樹脂からなる。
発光素子ＬＥＤからの出射光はレンズＬを介して所定の
指向性を有するように集光され略平行光となるが、レン
ズＬと開口１ｏｐ内との屈折率差は、比較的大きな方が
好ましいため、開口１ｏｐ内部においては、この樹脂材
料とレンズＬとの間に屈折率の小さい空気が介在するよ
うに、樹脂材料ＲＳＮ２を設ける。これは被覆であれば
良く、充填に至る必要はない。An opening 1o is made of a resin material transparent to infrared rays.
It is coated on the bottom surface in p, for example, it is made of a heat-resistant, flexible, chemical-resistant resin such as silicone resin.
The light emitted from the light emitting element LED is condensed through the lens L so as to have a predetermined directivity and becomes substantially parallel light, but the refractive index difference between the lens L and the inside of the opening 1op is preferably relatively large. Therefore, inside the opening 1op, the resin material RSN2 is provided so that air having a small refractive index is interposed between the resin material and the lens L. This only needs to be a coating and need not lead to filling.
【００１６】発光素子の設けられるダイパッド部につい
て詳説する。各発光素子ＬＥＤ１，ＬＥＤ２、ＬＥＤ
３，ＬＥＤ４，ＬＥＤ５，ＬＥＤ６のダイパッド部の機
能的構造は同一であるので、ここでは発光素子ＬＥＤ１
についてのみ説明する。The die pad on which the light emitting element is provided will be described in detail. Each light emitting element LED1, LED2, LED
Since the functional structures of the die pads of LED3, LED4, LED5, and LED6 are the same, the light emitting element LED1 is used here.
Will be described only.
【００１７】図１９は、発光ダイオードＬＥＤ１近傍部
の縦断面図である。発光ダイオードＬＥＤ１はダイパッ
ド部１Ｄに設けられた凹部内中央に取付けられている。
この凹部は、凹部周辺領域を構成する平坦部ＦＬＴに平
行な面を有する円形底面ＲＦ１と、底面ＲＦ１の外周と
平坦部ＦＬＴとの間を接続する円錐面から構成される内
側面ＲＦ２を有し、すり鉢形状を構成している。内側面
ＲＦ２は、底面ＲＦ１に垂直な断面においても外側に湾
曲していてもよく、この場合、凹部はカップ形状を構成
する。例えば、当該カップ形状は、外形１．３ｍｍ、内
径０．６１ｍｍ、深さ０．３ｍｍに設定し、各凹部間の
距離は２．９ｍｍに設定する。これらの底面ＲＦ１及び
内側面ＲＦ２は反射鏡を構成し、側面側に漏れる発光素
子からの光を表面方向に反射する。すなわち、リードフ
レームは銅を含む材料から構成されるが、この表面には
反射率の高い材料であるＡｕ、Ｐｄ、ＡｌやＡｇ等の金
属メッキが施されている。FIG. 19 is a longitudinal sectional view of the vicinity of the light emitting diode LED1. The light emitting diode LED1 is attached to the center of a concave portion provided in the die pad portion 1D.
This concave portion has a circular bottom surface RF1 having a surface parallel to the flat portion FLT constituting the concave portion peripheral region, and an inner surface RF2 formed of a conical surface connecting between the outer periphery of the bottom surface RF1 and the flat portion FLT. , In a mortar shape. The inner side surface RF2 may be curved outward even in a cross section perpendicular to the bottom surface RF1, and in this case, the concave portion forms a cup shape. For example, the cup shape is set to an outer shape of 1.3 mm, an inner diameter of 0.61 mm, and a depth of 0.3 mm, and the distance between the recesses is set to 2.9 mm. The bottom surface RF1 and the inner surface RF2 constitute a reflecting mirror, and reflect light from the light emitting element leaking to the side surface toward the surface. That is, the lead frame is made of a material containing copper, and its surface is plated with a metal having high reflectivity, such as Au, Pd, Al, or Ag.
【００１８】次に、レンズＬについて説明する。Next, the lens L will be described.
【００１９】図４はレンズＬの平面図、図５はレンズＬ
の正面図、図６はレンズＬの右側面図である。レンズＬ
は、パッケージ本体Ｈの外側に位置する外側表面Ｌｏ及
び内側に位置する内側表面Ｌｉを有している。外側表面
Ｌｏは、曲率中心がパッケージ本体Ｈの長手方向（幅方
向）に一致する線分を構成する半円筒形のレンズ（シリ
ンドリカルレンズ）を構成している。パッケージ本体Ｈ
の長手方向は、発光素子ＬＥＤ１〜ＬＥＤ６の配列方向
に一致する。内側表面Ｌｉは、前記長手方向及び開口１
ｏｐの深さ方向（発光素子の光出射方向）の双方に垂直
な方向（前後方向）に一致し、この長手方向に配列した
複数の線分を、それぞれの曲率中心とする複数のシリン
ドリカルレンズＬｉ１〜Ｌｉ６からなるシリンドリカル
レンズ群を構成している。FIG. 4 is a plan view of the lens L, and FIG.
6 is a right side view of the lens L. FIG. Lens L
Has an outer surface Lo located outside the package body H and an inner surface Li located inside. The outer surface Lo forms a semi-cylindrical lens (cylindrical lens) whose center of curvature forms a line segment that coincides with the longitudinal direction (width direction) of the package body H. Package body H
Of the light emitting elements LED1 to LED6 coincides with the arrangement direction of the light emitting elements LED1 to LED6. The inner surface Li is in the longitudinal direction and the opening 1
A plurality of cylindrical lenses Li1 that coincide with both directions perpendicular to both the depth direction of op (light emitting direction of the light emitting element) (front-back direction) and have a plurality of line segments arranged in the longitudinal direction as their respective centers of curvature. To Li6.
【００２０】発光素子ＬＥＤ１〜ＬＥＤ６からのそれぞ
れの出射光は、シリンドリカルレンズＬｉ及びＬｏによ
って、それぞれ幅方向及び前後方向に集光される。投光
ユニット１から出射される光の幅方向の指向性は±２０
°、前後方向の指向性は±１０°に設定される。なお、
本ユニット１が車両に搭載される場合には、光出射方向
が水平面から角度α（４５°）だけ傾くようにされるた
め、前後方向の指向性は水平面からの角度αを基準光線
とする仰角として設定される。The emitted lights from the light emitting elements LED1 to LED6 are condensed in the width direction and the front-back direction by the cylindrical lenses Li and Lo, respectively. The directivity in the width direction of the light emitted from the light emitting unit 1 is ± 20.
°, and the directivity in the front-back direction is set to ± 10 °. In addition,
When the unit 1 is mounted on a vehicle, the light emission direction is inclined from the horizontal plane by an angle α (45 °), so that the directivity in the front-rear direction is the elevation angle using the angle α from the horizontal plane as a reference ray. Is set as
【００２１】なお、外面側シリンドリカルレンズＬｏの
表面とリードフレームの平坦部ＦＬＴとの間の最大離隔
距離は、例えば４．５ｍｍ、シリンドリカルレンズＬｏ
の曲率半径は３．１ｍｍに設定する。内面側シリンドリ
カルレンズＬｉの表面とリードフレームの平坦部ＦＬＴ
との間の最短距離は、例えば１．３ｍｍ、シリンドリカ
ルレンズＬｉの曲率半径は３ｍｍに設定する。The maximum separation distance between the surface of the outer cylindrical lens Lo and the flat part FLT of the lead frame is, for example, 4.5 mm, and the cylindrical lens Lo is
Is set to 3.1 mm. The surface of the inner cylindrical lens Li and the flat part FLT of the lead frame
Is set to 1.3 mm, for example, and the radius of curvature of the cylindrical lens Li is set to 3 mm.
【００２２】なお、上記シリンドリカルレンズ群は、後
述するように非球面又は球面レンズ等の凸レンズ群であ
ってもよい。Incidentally, the cylindrical lens group may be a convex lens group such as an aspherical or spherical lens as described later.
【００２３】レンズＬの両端部には、厚み方向に沿って
突出した係合部ＬＦＬ，ＬＦＲが一体成形されており、
これがパッケージ本体Ｈにおける長手方向両端の側面に
当接し、レンズＬのパッケージ本体Ｈに対する長手方向
位置決め及び長手方向相対移動の規制を行う。この係合
部ＬＦＬ，ＬＦＲには長手方向に沿って延びる貫通孔Ｌ
ＴＨが設けられており、パッケージ本体Ｈの前記側面か
ら長手方向に突出した突出部ＨＦＬ，ＨＦＲ（図２参
照）が、当該貫通孔ＬＴＨ内に嵌まり込み、レンズＬの
パッケージ本体Ｈに対する前後方向位置決め及び前後方
向相対移動の規制を行う。係合部ＬＦＬ，ＬＦＲは、貫
通孔ＬＴＨに代えて、深さ方向に沿って延びるスリッ
ト、又は内側から外側に向けて延びる凹部を有すること
としてもよい。At both ends of the lens L, engaging portions LFL and LFR protruding along the thickness direction are integrally formed.
This abuts the side surfaces at both ends in the longitudinal direction of the package body H, and regulates the positioning of the lens L with respect to the package body H in the longitudinal direction and the relative movement in the longitudinal direction. The engaging portions LFL and LFR have through holes L extending in the longitudinal direction.
TH is provided, and protrusions HFL and HFR (see FIG. 2) protruding in the longitudinal direction from the side surfaces of the package main body H fit into the through holes LTH, and the lens L moves in the front-rear direction with respect to the package main body H. Restrict positioning and relative movement in the front-rear direction. The engagement portions LFL, LFR may have a slit extending along the depth direction or a concave portion extending from the inside to the outside, instead of the through hole LTH.
【００２４】以上、説明したように、本投光装置は、光
出射用開口１ｏｐを有するパッケージ本体Ｈと、光出射
用開口１ｏｐ内に配置された複数の発光素子ＬＥＤ１〜
ＬＥＤ６と、光出射用開口１ｏｐを塞ぐようにパッケー
ジ本体Ｈに取付けられた発光素子用レンズＬとを備える
投光装置において、複数の発光素子ＬＥＤ１〜ＬＥＤ６
はパッケージ本体の長手方向に沿って配列され、発光素
子用レンズＬの外側表面Ｌｏは曲率中心が前記長手方向
に平行な線分となるシリンドリカルレンズを構成し、発
光素子用レンズＬの内側表面Ｌｉはシリンドリカルレン
ズ群Ｌｉ１〜Ｌｉ６を構成し、シリンドリカルレンズ群
Ｌｉ１〜Ｌｉ６におけるそれぞれのレンズの曲率中心
は、複数の発光素子ＬＥＤ１〜ＬＥＤ６のそれぞれの光
出射方向延長線上に位置すると共に前記長手方向及び光
出射方向の双方に直交する線分となる。As described above, the present light emitting device includes a package body H having a light emitting opening 1op and a plurality of light emitting elements LED1 to LED1 arranged in the light emitting opening 1op.
In the light emitting device including the LED 6 and the light emitting element lens L attached to the package body H so as to close the light emitting opening 1op, a plurality of light emitting elements LED1 to LED6 are provided.
Are arranged along the longitudinal direction of the package body, the outer surface Lo of the light emitting element lens L constitutes a cylindrical lens whose center of curvature is a line segment parallel to the longitudinal direction, and the inner surface Li of the light emitting element lens L Constitutes the cylindrical lens groups Li1 to Li6, the center of curvature of each lens in the cylindrical lens groups Li1 to Li6 is located on the extension line of the light emitting direction of each of the plurality of light emitting elements LED1 to LED6, and the longitudinal direction and the light It becomes a line segment orthogonal to both of the emission directions.
【００２５】この投光装置１Ｕにおいては、発光素子用
レンズＬの内側表面Ｌｉ及び外側表面Ｌｏによって発光
素子ＬＥＤからの光が効率的に集光され、これを容易に
ＶＩＣＳ用の投光装置として機能させることができる。In the light projecting device 1U, the light from the light emitting device LED is efficiently condensed by the inner surface Li and the outer surface Lo of the light emitting device lens L, and this is easily used as a VICS light projecting device. Can work.
【００２６】シリンドリカルレンズＬｏの曲率半径は、
シリンドリカルレンズ群Ｌｉ１〜Ｌｉ６におけるそれぞ
れのレンズの曲率半径よりも大きい。外側表面Ｌｏは内
側表面Ｌｉよりも発光素子から遠いため、このシリンド
リカルレンズの曲率半径を大きくしても所望の指向性を
得ることができる。これにより、発光素子用レンズの厚
みを減少させることができる。The radius of curvature of the cylindrical lens Lo is:
It is larger than the radius of curvature of each lens in the cylindrical lens groups Li1 to Li6. Since the outer surface Lo is farther from the light emitting element than the inner surface Li, a desired directivity can be obtained even if the radius of curvature of the cylindrical lens is increased. Thus, the thickness of the light emitting element lens can be reduced.
【００２７】なお、本投光装置１Ｕは、受光装置と共に
一体化してもよい。The light emitting device 1U may be integrated with the light receiving device.
【００２８】図７はこのような投受光装置主要部の平面
図、図８は投受光装置主要部の正面図、図９は投受光装
置主要部の右側面図である。FIG. 7 is a plan view of the main part of such a light emitting and receiving device, FIG. 8 is a front view of the main part of the light emitting and receiving device, and FIG. 9 is a right side view of the main part of the light emitting and receiving device.
【００２９】本投受光装置は、前述の本投光装置１Ｕに
隣接して配置される受光素子（Ｓｉホトダイオード）Ｐ
Ｄを備えている点が上記と異なる。受光素子ＰＤは、パ
ッケージ本体の上記開口１ｏｐに隣接して形成された開
口２ｏｐ内に配置されたダイパッド部Ｄ１１上に固定さ
れており、この出力は受光素子ＰＤに逆バイアスを与え
るアウターリード部１０Ｂ，１１Ｂを介して取出され
る。開口２ｏｐ内にはシリコーン樹脂等の透明樹脂材料
が充填される。なお、この変形に伴って、レンズ部の発
光素子側係合部の形状を変更する。また、開口１ｏｐ，
２ｏｐ間には隔壁ＩＷが設けられる。The present light emitting and receiving device includes a light receiving element (Si photodiode) P adjacent to the above light emitting and receiving device 1U.
D is different from the above. The light receiving element PD is fixed on a die pad portion D11 arranged in an opening 2op formed adjacent to the opening 1op of the package body, and an output from the outer lead portion 10B for applying a reverse bias to the light receiving element PD. , 11B. The opening 2op is filled with a transparent resin material such as a silicone resin. The shape of the light-emitting element-side engaging portion of the lens portion is changed with this deformation. The opening 1op,
A partition IW is provided between two ops.
【００３０】図１０は本実施形態のレンズＬの平面図、
図１１はレンズＬの正面図、図１２はレンズＬの右側面
図である。FIG. 10 is a plan view of a lens L of the present embodiment,
FIG. 11 is a front view of the lens L, and FIG. 12 is a right side view of the lens L.
【００３１】レンズＬの受光素子ＰＤ側の端部には、長
手方向に沿って突出した係合部ＬＦＲが前述実施形態の
右側係合部ＬＦＲの代わりに一体成形で設けられてお
り、これがパッケージ本体Ｈの隔壁ＩＷ上に設けられた
縦断面コの字型の係合部ＨＦＲ内に嵌まり込み（図８参
照）、レンズＬのパッケージ本体Ｈに対する長手方向位
置決め及び長手方向相対移動（受光素子ＰＤ側移動）の
規制を行う。At the end of the lens L on the light receiving element PD side, an engaging portion LFR protruding along the longitudinal direction is provided by integral molding instead of the right engaging portion LFR of the above-described embodiment. The main body H is fitted into an engagement portion HFR having a U-shaped vertical section provided on the partition IW of the main body H (see FIG. 8), and the lens L is positioned relative to the package main body H in the longitudinal direction and relatively moved in the longitudinal direction (light receiving element). (PD side movement).
【００３２】なお、レンズ形状は変形することができ
る。The lens shape can be changed.
【００３３】図１３は、このような投光装置主要部の平
面図、図１４は投光装置主要部の正面図、図１５は投光
装置主要部の右側面図、図１６は本実施形態のレンズＬ
の平面図、図１７はレンズＬの正面図、図１８はレンズ
Ｌの右側面図である。本形態に係る投光装置は、レンズ
Ｌの内側表面Ｌｉの形状のみが異なり、他は図１から図
６に示したものと同一である。FIG. 13 is a plan view of the main part of the light projecting device, FIG. 14 is a front view of the main part of the light projecting device, FIG. 15 is a right side view of the main part of the light projecting device, and FIG. Lens L
17 is a front view of the lens L, and FIG. 18 is a right side view of the lens L. The light projecting device according to the present embodiment is different from the light projecting device shown in FIGS. 1 to 6 only in the shape of the inner surface Li of the lens L.
【００３４】本装置においては、発光素子用レンズＬの
内側表面Ｌｉが凸レンズ群Ｌｉ１〜Ｌｉ６を構成し、凸
レンズ群Ｌｉ１〜Ｌｉ６におけるそれぞれのレンズの曲
率中心は、複数の発光素子ＬＥＤ１〜ＬＥＤ６のそれぞ
れの光出射方向延長線上に位置する。投光装置において
も、発光素子用レンズＬの内側表面Ｌｉ及び外側表面Ｌ
ｏによって発光素子ＬＥＤからの光が効率的に集光さ
れ、これを容易にＶＩＣＳ用の投光装置として機能させ
ることができる。In the present apparatus, the inner surface Li of the light emitting element lens L constitutes the convex lens groups Li1 to Li6, and the center of curvature of each lens in the convex lens groups Li1 to Li6 is the respective light emitting elements LED1 to LED6. Are located on an extension of the light emitting direction. Also in the light projecting device, the inner surface Li and the outer surface L of the light emitting element lens L
The light from the light emitting element LED is efficiently condensed by o, and this can easily function as a light emitting device for VICS.
【００３５】なお、凸レンズＬｉ１〜Ｌｉ６は、球面レ
ンズであるが、非球面レンズであってもよい。また、シ
リンドリカルレンズＬｏの曲率半径は、凸レンズ群Ｌｉ
１〜Ｌｉ６におけるそれぞれのレンズの曲率半径よりも
大きく、上記と同様に発光素子用レンズＬの厚みを減少
させることができる。Although the convex lenses Li1 to Li6 are spherical lenses, they may be aspheric lenses. Further, the radius of curvature of the cylindrical lens Lo is equal to the convex lens group Li.
It is larger than the radius of curvature of each lens in 1 to Li6, and the thickness of the light emitting element lens L can be reduced in the same manner as described above.
【００３６】図７に示した投受光装置の変形例として、
受光素子ＰＤ上にもレンズを配置することとしてもよ
い。As a modified example of the light emitting and receiving device shown in FIG.
A lens may be arranged on the light receiving element PD.
【００３７】図２０は、このような投受光装置主要部の
斜視図、図２１は投光装置主要部の平面図、図２２は投
光装置主要部の正面図、図２３は投光装置主要部の右側
面図である。FIG. 20 is a perspective view of the main part of the light emitting and receiving device, FIG. 21 is a plan view of the main part of the light emitting device, FIG. 22 is a front view of the main part of the light emitting device, and FIG. It is a right view of a part.
【００３８】発光素子用レンズＬには、受光素子用レン
ズＬ’が一体的に成形して設けられており、受光素子用
レンズＬ’は開口２ｏｐを塞いでいる。レンズＬ’の右
端側には、図２に示したレンズＬの右端側と同一構造の
係合部ＬＦＲ’，ＨＦＲ’及び貫通孔ＬＴＨが設けられ
ており、レンズの固定及び位置決めを行っている。The light emitting element lens L is integrally provided with a light receiving element lens L ′, and the light receiving element lens L ′ covers the opening 2op. At the right end side of the lens L ', there are provided engaging portions LFR' and HFR 'and a through hole LTH having the same structure as the right end side of the lens L shown in FIG. 2 to fix and position the lens. .
【００３９】レンズＬ’の外側表面Ｌｏ’は、曲率中心
が前記長手方向（発光素子配列方向）に平行な線分とな
るシリンドリカルレンズを構成する。レンズＬ’の内側
表面Ｌｏ’は、受光素子ＰＤの受光面に平行であって平
坦である。The outer surface Lo 'of the lens L' constitutes a cylindrical lens whose center of curvature is a line segment parallel to the longitudinal direction (light emitting element arrangement direction). The inner surface Lo 'of the lens L' is parallel to the light receiving surface of the light receiving element PD and flat.
【００４０】受光素子側シリンドリカルレンズＬｏ’の
曲率半径は、発光素子側シリンドリカルレンズＬｏの曲
率半径よりも大きい。受光素子ＰＤの受光面の面積は、
受光素子用開口２ｏｐの深さ方向に垂直な断面積よりも
小さい。受光素子ＰＤへの入射光は、レンズＬ’によっ
て長手方向及び深さ方向の双方に垂直な方向（前後方
向）に集光されるので、受光素子ＰＤ内へ入射する光の
光量を増加させることができる。なお、レンズＬ’の設
置に伴って、開口２ｏｐ内に充填されていた透明樹脂材
料の厚みは薄くされる。The radius of curvature of the light receiving element side cylindrical lens Lo ′ is larger than the radius of curvature of the light emitting element side cylindrical lens Lo. The area of the light receiving surface of the light receiving element PD is
It is smaller than the cross-sectional area perpendicular to the depth direction of the light receiving element opening 2op. Since the light incident on the light receiving element PD is collected by the lens L 'in a direction (front-back direction) perpendicular to both the longitudinal direction and the depth direction, the amount of light incident on the light receiving element PD is increased. Can be. Note that, with the installation of the lens L ′, the thickness of the transparent resin material filled in the opening 2op is reduced.
【００４１】発光素子用レンズＬと受光素子用レンズ
Ｌ’とは一体的に成形されているが、これらの境界部は
隔壁ＩＷ上に位置し、境界部におけるレンズの内面は厚
み方向に立設する隔壁ＩＷの上端部に嵌まるように凹溝
を形成している。The light emitting element lens L and the light receiving element lens L 'are integrally formed, but their boundary is located on the partition wall IW, and the inner surface of the lens at the boundary is erected in the thickness direction. A concave groove is formed so as to fit into the upper end of the partition IW.
【００４２】発光素子ＬＥＤから出射された光は、図１
９に示した凹面反射鏡ＲＦ２による反射及び隔壁ＩＷに
よる遮蔽によって、その横方向進行が抑制されている。
すなわち、発光素子ＬＥＤからの出射光は、横方向延長
線上に配置された受光素子ＰＤには入射しにくい。本例
では、一体成形されたレンズＬ，Ｌ’間に上記境界部を
備えるので、レンズを介在した横方向への光伝達効率が
低下し、発光素子ＬＥＤ及び受光素子ＰＤ間の光リンク
を更に抑制することができる。The light emitted from the light emitting element LED is shown in FIG.
9 is suppressed by the reflection by the concave reflecting mirror RF2 and the shielding by the partition wall IW.
That is, light emitted from the light emitting element LED is unlikely to be incident on the light receiving element PD arranged on the horizontal extension line. In this example, since the boundary is provided between the integrally formed lenses L and L ', the light transmission efficiency in the lateral direction with the lens interposed is reduced, and the optical link between the light emitting element LED and the light receiving element PD is further increased. Can be suppressed.
【００４３】[0043]
【発明の効果】以上、説明したように、本装置において
は、発光素子からの光が効率的に集光される。As described above, in this device, light from the light emitting element is efficiently collected.
【図面の簡単な説明】[Brief description of the drawings]
【図１】投光装置主要部の平面図。FIG. 1 is a plan view of a main part of a light emitting device.
【図２】投光装置主要部の正面図。FIG. 2 is a front view of a main part of the light emitting device.
【図３】投光装置主要部の右側面図。FIG. 3 is a right side view of a main part of the light emitting device.
【図４】レンズＬの平面図。FIG. 4 is a plan view of a lens L.
【図５】レンズＬの正面図。FIG. 5 is a front view of a lens L.
【図６】レンズＬの右側面図。FIG. 6 is a right side view of the lens L.
【図７】投受光装置主要部の平面図。FIG. 7 is a plan view of a main part of the light emitting and receiving device.
【図８】投受光装置主要部の正面図。FIG. 8 is a front view of a main part of the light emitting and receiving device.
【図９】投受光装置主要部の右側面図。FIG. 9 is a right side view of a main part of the light emitting and receiving device.
【図１０】別のレンズＬの平面図。FIG. 10 is a plan view of another lens L.
【図１１】別のレンズＬの正面図。FIG. 11 is a front view of another lens L.
【図１２】別のレンズＬの右側面図で。FIG. 12 is a right side view of another lens L.
【図１３】別の形態に係る投光装置主要部の平面図。FIG. 13 is a plan view of a main part of a light emitting device according to another embodiment.
【図１４】別の形態に係る投光装置主要部の正面図．FIG. 14 is a front view of a main part of a light emitting device according to another embodiment.
【図１５】別の形態に係る投光装置主要部の右側面図。FIG. 15 is a right side view of a main part of a light emitting device according to another embodiment.
【図１６】図１３の装置におけるレンズＬの平面図。FIG. 16 is a plan view of a lens L in the apparatus of FIG.
【図１７】図１３の装置におけるレンズＬの正面図。FIG. 17 is a front view of a lens L in the apparatus of FIG.
【図１８】図１３の装置におけるレンズＬの右側面図。FIG. 18 is a right side view of a lens L in the apparatus of FIG.
【図１９】発光ダイオードＬＥＤ１近傍部の縦断面図。FIG. 19 is a longitudinal sectional view of the vicinity of the light emitting diode LED1.
【図２０】投受光装置主要部の斜視図。FIG. 20 is a perspective view of a main part of the light emitting and receiving device.
【図２１】投光装置主要部の平面図。FIG. 21 is a plan view of a main part of the light emitting device.
【図２２】投光装置主要部の正面図。FIG. 22 is a front view of a main part of the light emitting device.
【図２３】投光装置主要部の右側面図。FIG. 23 is a right side view of a main part of the light emitting device.
ＬＥＤ…発光素子、ＰＤ…受光素子、Ｌ…レンズ、Ｌｉ
…内側表面、Ｌｏ…外側表面、Ｈ…パッケージ本体。LED: light emitting element, PD: light receiving element, L: lens, Li
... inside surface, Lo ... outside surface, H ... package body.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｈ０４Ｂ 10/22 10/28 10/02 // Ｆ２１Ｙ 101:02 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) H04B 10/22 10/28 10/02 // F21Y 101: 02
Claims (4)
と、前記光出射用開口内に配置された複数の発光素子
と、前記光出射用開口を塞ぐように前記パッケージ本体
に取付けられた発光素子用レンズとを備える投光装置に
おいて、前記複数の発光素子は前記パッケージ本体の長
手方向に沿って配列され、前記発光素子用レンズの外側
表面は曲率中心が前記長手方向に平行な線分となるシリ
ンドリカルレンズを構成し、前記発光素子用レンズの内
側表面はシリンドリカルレンズ群を構成し、前記シリン
ドリカルレンズ群におけるそれぞれのレンズの曲率中心
は、前記複数の発光素子のそれぞれの光出射方向延長線
上に位置すると共に前記長手方向及び前記光出射方向の
双方に直交する線分となることを特徴とする投光装置。1. A package body having an opening for light emission, a plurality of light emitting elements disposed in the opening for light emission, and a light emitting element attached to the package body so as to cover the opening for light emission. A plurality of light emitting elements are arranged along a longitudinal direction of the package body, and an outer surface of the light emitting element lens has a center of curvature that is a line segment parallel to the longitudinal direction. A lens is formed, and an inner surface of the light emitting element lens forms a cylindrical lens group, and a center of curvature of each lens in the cylindrical lens group is located on an extension of a light emitting direction of each of the plurality of light emitting elements. And a line segment orthogonal to both the longitudinal direction and the light emitting direction.
は、前記シリンドリカルレンズ群におけるそれぞれのレ
ンズの曲率半径よりも大きいことを特徴とする請求項１
に記載の投光装置。2. The system according to claim 1, wherein a radius of curvature of said cylindrical lens is larger than a radius of curvature of each lens in said cylindrical lens group.
3. The light emitting device according to claim 1.
と、前記光出射用開口内に配置された複数の発光素子
と、前記光出射用開口を塞ぐように前記パッケージ本体
に取付けられた発光素子用レンズとを備える投光装置に
おいて、前記複数の発光素子は前記パッケージ本体の長
手方向に沿って配列され、前記発光素子用レンズの外側
表面は曲率中心が前記長手方向に平行な線分となるシリ
ンドリカルレンズを構成し、前記発光素子用レンズの内
側表面は凸レンズ群を構成し、前記凸レンズ群における
それぞれのレンズの曲率中心は、前記複数の発光素子の
それぞれの光出射方向延長線上に位置することを特徴と
する投光装置。3. A package body having an opening for light emission, a plurality of light emitting elements disposed in the opening for light emission, and a light emitting element attached to the package body so as to cover the opening for light emission. A plurality of light emitting elements are arranged along a longitudinal direction of the package body, and an outer surface of the light emitting element lens has a center of curvature which is a line segment parallel to the longitudinal direction. Constituting a lens, the inner surface of the light emitting element lens constitutes a convex lens group, and the center of curvature of each lens in the convex lens group is located on an extension line of the light emitting direction of each of the plurality of light emitting elements. Characteristic floodlight device.
は、前記凸レンズ群におけるそれぞれのレンズの曲率半
径よりも大きいことを特徴とする請求項１に記載の投光
装置。4. The light projecting device according to claim 1, wherein the radius of curvature of the cylindrical lens is larger than the radius of curvature of each lens in the convex lens group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22153899A JP4330716B2 (en) | 1999-08-04 | 1999-08-04 | Floodlight device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22153899A JP4330716B2 (en) | 1999-08-04 | 1999-08-04 | Floodlight device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2001052513A true JP2001052513A (en) | 2001-02-23 |
| JP2001052513A5 JP2001052513A5 (en) | 2006-09-21 |
| JP4330716B2 JP4330716B2 (en) | 2009-09-16 |
Family
ID=16768298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22153899A Expired - Fee Related JP4330716B2 (en) | 1999-08-04 | 1999-08-04 | Floodlight device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4330716B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004200704A (en) * | 2002-09-20 | 2004-07-15 | Yazaki Corp | Led indication device and meter using this |
| WO2010013672A1 (en) * | 2008-08-01 | 2010-02-04 | 日亜化学工業株式会社 | Lighting device |
| WO2010092834A1 (en) * | 2009-02-13 | 2010-08-19 | シャープ株式会社 | Lighting device and lighting apparatus using said lighting device |
| JP2011129950A (en) * | 2002-09-04 | 2011-06-30 | Cree Inc | Power surface mount light emitting die package |
| JP2011151239A (en) * | 2010-01-22 | 2011-08-04 | Toppan Printing Co Ltd | Lead frame for led and method for manufacturing led module |
| JP2012150296A (en) * | 2011-01-19 | 2012-08-09 | Mitsubishi Electric Corp | Optical lens and lighting device |
| US8530915B2 (en) | 2002-09-04 | 2013-09-10 | Cree, Inc. | Power surface mount light emitting die package |
| US8608349B2 (en) | 2002-09-04 | 2013-12-17 | Cree, Inc. | Power surface mount light emitting die package |
-
1999
- 1999-08-04 JP JP22153899A patent/JP4330716B2/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011129950A (en) * | 2002-09-04 | 2011-06-30 | Cree Inc | Power surface mount light emitting die package |
| US8710514B2 (en) | 2002-09-04 | 2014-04-29 | Cree, Inc. | Power surface mount light emitting die package |
| US8622582B2 (en) | 2002-09-04 | 2014-01-07 | Cree, Inc. | Power surface mount light emitting die package |
| US8608349B2 (en) | 2002-09-04 | 2013-12-17 | Cree, Inc. | Power surface mount light emitting die package |
| US8530915B2 (en) | 2002-09-04 | 2013-09-10 | Cree, Inc. | Power surface mount light emitting die package |
| JP2004200704A (en) * | 2002-09-20 | 2004-07-15 | Yazaki Corp | Led indication device and meter using this |
| RU2470221C2 (en) * | 2008-08-01 | 2012-12-20 | Нициа Корпорейшн | Lighting device |
| WO2010013672A1 (en) * | 2008-08-01 | 2010-02-04 | 日亜化学工業株式会社 | Lighting device |
| JP2010040248A (en) * | 2008-08-01 | 2010-02-18 | Nichia Corp | Lighting apparatus |
| US8714770B2 (en) | 2008-08-01 | 2014-05-06 | Nichia Corporation | Lighting device |
| JP2010186657A (en) * | 2009-02-13 | 2010-08-26 | Sharp Corp | Lighting device, and lighting apparatus using the same |
| CN102317681A (en) * | 2009-02-13 | 2012-01-11 | 夏普株式会社 | Lighting device and lighting apparatus using said lighting device |
| EP2397750A1 (en) * | 2009-02-13 | 2011-12-21 | Sharp Kabushiki Kaisha | Lighting device and lighting apparatus using said lighting device |
| WO2010092834A1 (en) * | 2009-02-13 | 2010-08-19 | シャープ株式会社 | Lighting device and lighting apparatus using said lighting device |
| EP2397750A4 (en) * | 2009-02-13 | 2014-12-17 | Sharp Kk | Lighting device and lighting apparatus using said lighting device |
| JP2011151239A (en) * | 2010-01-22 | 2011-08-04 | Toppan Printing Co Ltd | Lead frame for led and method for manufacturing led module |
| JP2012150296A (en) * | 2011-01-19 | 2012-08-09 | Mitsubishi Electric Corp | Optical lens and lighting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4330716B2 (en) | 2009-09-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7431480B2 (en) | Optical element, compound optical element, and illuminating apparatus | |
| EP1048085B1 (en) | Led module and luminaire | |
| CN1965417B (en) | Led spotlight having funnel-shaped lens | |
| US4698730A (en) | Light-emitting diode | |
| JPH0983018A (en) | Light emitting diode unit | |
| KR102159090B1 (en) | Lamp unit and vehicle for using the same | |
| US8636381B2 (en) | Flexible light source module | |
| US20080278961A1 (en) | Hybrid Optics for L.E.D. Lamp | |
| JP2001066246A (en) | Raindrop sensor | |
| KR20020025678A (en) | Optical Device for an Optical Element and Apparatus Employing the Device | |
| JP4330716B2 (en) | Floodlight device | |
| JP2001155510A (en) | Linear light source apparatus | |
| CN114730851A (en) | Lighting device comprising passive optical nanostructures | |
| KR101044682B1 (en) | illumination package | |
| JP2002134793A (en) | Optical device for optical element | |
| EP3089226A1 (en) | Light-emitting diode module and lamp using the same | |
| US8616733B1 (en) | Light emitting diode optical system and related methods | |
| KR102107526B1 (en) | A light emitting package device | |
| CN103165798A (en) | Light emitting diode (LED) encapsulation structure and lens assembly thereof | |
| CN112393198B (en) | Miniaturized light projection device | |
| CN100433385C (en) | Light emitting dovice | |
| JPS6338272A (en) | Photosemiconductor device | |
| JP2018152402A (en) | Light-emitting device | |
| JP4611472B2 (en) | Emitter / receiver | |
| JPH08116097A (en) | Led display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20060803 |
|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20060803 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20081111 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20081118 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20090119 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20090317 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20090616 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20090617 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 4330716 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120626 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120626 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130626 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130626 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140626 Year of fee payment: 5 |
|
| LAPS | Cancellation because of no payment of annual fees |