JPH0436590B2 - - Google Patents
Info
- Publication number
- JPH0436590B2 JPH0436590B2 JP2603585A JP2603585A JPH0436590B2 JP H0436590 B2 JPH0436590 B2 JP H0436590B2 JP 2603585 A JP2603585 A JP 2603585A JP 2603585 A JP2603585 A JP 2603585A JP H0436590 B2 JPH0436590 B2 JP H0436590B2
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- light
- emitting element
- emitting diode
- lens
- 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.)
- Expired - Lifetime
Links
- 230000003287 optical effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48245—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
- H01L2224/48247—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
- H01L33/60—Reflective elements
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Securing Globes, Refractors, Reflectors Or The Like (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Led Device Packages (AREA)
- Led Devices (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は信号灯、車輌用灯具、表示灯、光通信
装置及び各種センサ等の光源として使用される可
視光又は赤外線を放射する発光ダイオードに関す
るものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a light emitting diode that emits visible light or infrared rays and is used as a light source for signal lights, vehicle lights, indicator lights, optical communication devices, various sensors, etc. It is.
一般にこの種の光源用発光ダイオードとして
は、第６図に示した構造のものが公知である。こ
の公知の発光ダイオードにおいて、１はGaP系又
はGaAsP系の発光素子であり、該発光素子は一
方のリードフレーム２の凹部２ａ内にマウントさ
れ、他方のリードフレーム３との間においてワイ
ヤ４がボンデイングされ、これらが一体的に樹脂
モールドされると共に凸状のレンズ部５が形成さ
れたものである。このレンズ部５の前端側、即ち
光束が照射される側の端部５ａは、光線を光軸Ｘ
に沿つて平行光線にすべく球面形状に形成されて
いる。
Generally, as this type of light emitting diode for a light source, one having the structure shown in FIG. 6 is known. In this known light emitting diode, 1 is a GaP-based or GaAsP-based light emitting element, and the light emitting element is mounted in a recess 2a of one lead frame 2, and a wire 4 is bonded between it and the other lead frame 3. These are integrally molded with resin, and a convex lens portion 5 is formed. The front end side of this lens portion 5, that is, the end portion 5a on the side where the light beam is irradiated, directs the light beam to the optical axis
It is formed into a spherical shape to make parallel light rays along.
このような構成の発光ダイオードにおいて、発
光素子１から放射される光線の内、球面状の端部
５ａで平行光線になる範囲は角度θ1（約60°）であ
る。又、リードフレーム２に設けた凹部２ａはそ
の内部が光沢メツキされており、発光素子１から
側面方向に出る光を前面側に反射させているが、
この反射光において、第７図に示したように、実
線の矢印が発光素子１の中心から放射された光
で、点線の矢印が素子端面から放射された光であ
つて、これら光線の内前面側に反射されて有効光
線となるのはθ2（約20°）の範囲である。従つて、
全体として見た時に前面側に向う有効光線の角度
範囲はθ1＋2θ2であり、その他の角度範囲θ3（約
40°）が有効光線として全く利用されない範囲に
なる。尚、前記したGaP系及びGaAsP系の発光
素子の発光指向特性は第８図でグラフ中で曲線６
で示した通りである。 In the light emitting diode having such a configuration, among the light rays emitted from the light emitting element 1, the range in which the light rays become parallel at the spherical end portion 5a is an angle θ 1 (approximately 60°). Further, the inside of the recess 2a provided in the lead frame 2 is gloss plated, and the light emitted from the light emitting element 1 in the side direction is reflected to the front side.
In this reflected light, as shown in FIG. 7, the solid line arrow is the light emitted from the center of the light emitting element 1, and the dotted line arrow is the light emitted from the end face of the element. It is in the range of θ 2 (approximately 20°) that the beam is reflected to the side and becomes an effective ray. Therefore,
When viewed as a whole, the angular range of the effective rays directed toward the front side is θ 1 + 2θ 2 , and the other angular range θ 3 (approximately
40°) is the range where it is not used as an effective ray at all. The light emission directional characteristics of the GaP-based and GaAsP-based light emitting elements described above are shown in curve 6 in the graph in Figure 8.
As shown in
このグラフに基いて前記した有効光線となる範
囲を見ると、発光素子１から放射される光の内、
前面側θ1の角度範囲と側面側の限られた角度範囲
θ2が利用されることになるが、角度範囲θ2の輝度
は極めて少なくこれらの範囲が利用されたにして
も大巾な照度アツプは望めない。特に第７図にお
ける凹部２ａでの反射を詳細に考えると、凹部２
ａの開口部の直径は発光素子１の外形寸法の約３
〜５倍であり、発光素子１は一般に素子全体で発
光するため、点光源とみなすことができす、実際
の凹部２ａでの反射光はほとんどが無効な方向に
反射されることが多い。従つて、凹部２ａによる
反射面があつったにしても発光素子１から放射さ
れる輝度の高い角度範囲θ3が全く利用されず、し
かも反射面からの光も一部しか利用できないので
発光ダイオード全体としての照度アツプは期待で
きない。 Looking at the range of effective light rays described above based on this graph, out of the light emitted from the light emitting element 1,
The angular range θ 1 on the front side and the limited angular range θ 2 on the side side will be used, but the brightness in the angular range θ 2 is extremely small, and even if these ranges are used, the illuminance will be very large. I can't hope for an uptick. In particular, if we consider in detail the reflection at the recess 2a in FIG.
The diameter of the opening a is approximately 3 of the external dimension of the light emitting element 1.
~5 times, and since the light emitting element 1 generally emits light from the entire element, it can be regarded as a point light source.Actually, most of the light reflected by the recess 2a is often reflected in an invalid direction. Therefore, even if the reflective surface due to the concave portion 2a is damaged, the angular range θ 3 in which the luminance is high emitted from the light emitting element 1 is not utilized at all, and only a portion of the light from the reflective surface can be used, so that the light emitting diode We cannot expect an increase in overall illuminance.
前記問題点を解決するために同一出願人に係る
先願の発明（特願昭59−270372）がある。この先
願の発明にあつては、光源を隣接状態に配設する
こと及び取出された光束を拡角で視認させること
を考慮しなかつた。 In order to solve the above problem, there is an invention (Japanese Patent Application No. 59-270372) filed by the same applicant. In the invention of this prior application, no consideration was given to arranging the light sources adjacent to each other and making the extracted light beam visible at a wide angle.
本発明は、従来例における発光素子から放射さ
れた光の利用度の悪い問題点及び隣設配置又は拡
角での視認性の問題点を解決しようとするもので
ある。
The present invention is intended to solve the problem of poor utilization of light emitted from a light emitting element and the problem of visibility when placed next to each other or at a wide angle in the conventional example.
本発明は前記した問題点を解決するための具体
的手段として、発光素子をリードフレーム、ステ
ム又は基板上にマウント、ワイヤーボンデイング
すると共に樹脂モールドしてレンズ部を形成した
発光ダイオードに光透過性の材料で形成されたキ
ヤツプを被着させ、該キヤツプは正面視が角形で
且つ中心部に筒状の孔を設け、背面側をドーム状
の曲面に形成し、前記角形の各辺に沿つて側面を
カツトすると共に角形の前面に多数個のレンズカ
ツトを施したことを特徴とする発光ダイオードを
提供するものであつて、キヤツプを被着させるこ
とで発光素子からの側面方向の放射光を全部前面
側に平行光線として反射し、これら反射光が全て
有効光線として利用できるので発光ダイオードの
輝度を大巾にアツプさせると共に、正面視が角形
であるため隣接配置が隙間なく行え、又前面のレ
ンズカツトによつて照射光が拡散し、拡角での視
認性が大となるのである。
As a specific means for solving the above-mentioned problems, the present invention provides a light-transmitting diode in which a light-emitting element is mounted on a lead frame, stem, or substrate, wire-bonded, and resin-molded to form a lens part. A cap made of material is attached, and the cap has a square shape when viewed from the front, a cylindrical hole in the center, a dome-shaped curved surface on the back side, and a side surface along each side of the square shape. The present invention provides a light emitting diode characterized by having a large number of lens cuts on the square front surface, and by attaching a cap, all of the light emitted from the light emitting element in the lateral direction is directed to the front surface. The LEDs are reflected as parallel rays, and all of these reflected rays can be used as effective rays, greatly increasing the brightness of the light emitting diode.Since the front view is rectangular, adjacent arrangements can be made without gaps, and the front lens cut allows As a result, the irradiated light is diffused, increasing visibility at wide angles.
〔実施例〕
次に本発明を図示の実施例に基き更に詳しく説
明すると、１１はGaP系及びGaAsP系の発光素
子であり、該発光素子は一方のリードフレーム１
２の頂部にマウントされると共に他方のリードフ
レーム１３との間においてワイヤー１４がボンデ
イングされた電気的に接続されている。このよう
に接続された発光素子１１と両リードフレーム１
２，１３の上端部分を光透過性の樹脂によりモー
ルドしてレンズ部１５を形成し、該レンズ部の光
束が照射される側の端部１５ａは球面形状に形成
されている。前記構成は一般に使用されている発
光ダイオードの構成と変りがない。[Example] Next, the present invention will be explained in more detail based on the illustrated example. Reference numeral 11 denotes a GaP-based and GaAsP-based light emitting element, and the light emitting element is attached to one lead frame 1.
2 and is electrically connected to the other lead frame 13 by bonding a wire 14 therebetween. The light emitting element 11 and both lead frames 1 connected in this way
The upper end portions of the lenses 2 and 13 are molded with a light-transmitting resin to form a lens portion 15, and the end portion 15a of the lens portion on the side to which the light beam is irradiated is formed into a spherical shape. The configuration is the same as that of commonly used light emitting diodes.
このような構成の発光ダイオードに対して被着
されるキヤツプ１６は前記レンズ部１５と同系の
樹脂例えばアクリル樹脂又はゴム例えばシリコン
ゴム等の光透過性の材料で全体形状をドーム状に
すると共に正面視を角形に形成し、上面又は前面
に多数の凸状のレンズカツト１６ａを施すと共に
中心部に筒状の孔１７が形成され、該孔１７にレ
ンズ部１５が挿着される。この場合レンズ部１５
に傷を付けないようにするため、孔１７の内径は
レンズ部１５の外径と略同径にするか稍々大きめ
にし、キヤツプ１６がゴム等の軟質材料である場
合と樹脂等の硬質材料である場合とによつて適宜
孔の大きさを選択する。前記キヤツプ１６の外周
面即ち背面側はドーム状の曲面１８に形成されて
おり、該曲面は前記発光素子１１から放射される
光束の内、レンズ部１５の端部１５ａに至らない
側面方向の光束全部を前面側に光軸Ｘと略平行に
なるように反射させるものである。前記キヤツプ
１６の正面視の角形は任意の形状のものが選べ、
角形の各辺に沿つてキヤツプ１６の側面にカツト
部１９を夫々設ける。 The cap 16 attached to the light emitting diode having such a structure is made of a light-transmissive material such as a resin of the same type as the lens part 15, such as acrylic resin, or rubber, such as silicone rubber, and has a dome-like overall shape and a front surface. The lens is formed into a rectangular shape, and a large number of convex lens cuts 16a are provided on the top or front surface, and a cylindrical hole 17 is formed in the center, into which the lens portion 15 is inserted. In this case, the lens portion 15
In order to prevent damage to the cap 16, the inner diameter of the hole 17 should be approximately the same diameter as the outer diameter of the lens portion 15, or slightly larger. The size of the hole is appropriately selected depending on the case. The outer circumferential surface, that is, the back side of the cap 16 is formed into a dome-shaped curved surface 18, and the curved surface absorbs the light beam in the side direction that does not reach the end 15a of the lens portion 15, out of the light beam emitted from the light emitting element 11. The entire beam is reflected toward the front side so as to be substantially parallel to the optical axis X. The square shape of the cap 16 when viewed from the front can be selected from any arbitrary shape.
Cut portions 19 are provided on the side surfaces of the cap 16 along each side of the rectangle.
第３図に示した実施例はキヤツプ１６の前面の
レンズカツトを変えただけで他の部分は前記第１
実施例と同一であるので同一符号を付してその説
明を省略する。即ち、前面のレンズカツト１６ｂ
を凹状に形成して拡散光を取出すものである。 In the embodiment shown in FIG. 3, only the lens cut on the front surface of the cap 16 is changed;
Since it is the same as the embodiment, the same reference numerals are given and the explanation thereof will be omitted. That is, the front lens cut 16b
is formed into a concave shape to extract diffused light.
いづれにしても、キヤツプ１６の外周面又は背
面の曲面１８がドーム状の曲面に形成されている
ので発光素子１１から横方向に出る光束を全部有
効光線となるように前部側に反射させるものであ
る。尚、実施例において発光素子をリードフレー
ムに取付けた場合について述べたが、ステム又は
基板上にマウントした場合でも同じである。 In any case, since the outer circumferential surface or the curved surface 18 on the rear surface of the cap 16 is formed into a dome-shaped curved surface, all the light beams emitted from the light emitting element 11 in the lateral direction are reflected toward the front side so as to become effective light beams. It is. In the embodiments, the case where the light emitting element is mounted on a lead frame has been described, but the same applies even when the light emitting element is mounted on a stem or a substrate.
このように構成された発光ダイオードは、第４
図に示したようにカツト部１９を当接させて複数
個の発光ダイオードを隙間なく隣接して配設で
き、その発光面が全体に亘つて均等に光輝する。
又、第５図に示したように角形を六角形にした場
合でもその隣接状態に隙間がなくなるのである。 The light emitting diode configured in this way has a fourth
As shown in the figure, a plurality of light emitting diodes can be disposed adjacent to each other without any gaps by bringing the cut portions 19 into contact with each other, and the light emitting surfaces of the light emitting diodes shine evenly over the entire surface.
Furthermore, even when the squares are made into hexagons as shown in FIG. 5, there is no gap between the adjacent hexagons.
以上説明したように本発明に係る発光ダイオー
ドは、レンズ部に対して中心部に筒状の孔を有し
側面外周又は背面が曲面、即ち発光素子から放射
される光束の内、発光ダイオードのレンズ部の上
部曲面（レンズ面）から外れた全ての光束を前面
側に光軸と略平行に反射させて取出すことができ
るキヤツプを備えたので、有効光束が増大して発
光ダイオードの照度を大巾にアツプさせることが
できるという優れた効果を奏する。
As explained above, the light emitting diode according to the present invention has a cylindrical hole in the center with respect to the lens part, and the outer periphery of the side surface or the back surface is curved. Since the cap is equipped with a cap that can reflect all the light beams that deviate from the upper curved surface (lens surface) to the front side and take them out approximately parallel to the optical axis, the effective light beam increases and the illuminance of the light emitting diode is greatly increased. It has the excellent effect of increasing the number of people.
又、キヤツプの前面に凸又は凹状のレンズカツ
トを施したことにより、発光ダイオードから放射
される光束が拡散光となり、広角度において視認
できるばかりでなく、正面視を角形に形成したの
で複数個の発光ダイオードを隣接状態に且つ隙間
なく配設でき、境目のない広い均一な発光面が形
成できるという優れた効果も奏する。 In addition, by providing a convex or concave lens cut on the front surface of the cap, the light beam emitted from the light emitting diode becomes a diffused light, which not only makes it visible from a wide angle, but also has a rectangular shape when viewed from the front, so it is possible to see multiple light emitting lights. The excellent effect is that the diodes can be disposed adjacent to each other with no gaps, and a wide and uniform light emitting surface with no boundaries can be formed.
第１図は本発明に係る第１実施例の発光ダイオ
ードの断面図、第２図は同発光ダイオードの斜視
図、第３図は第２実施例の発光ダイオードの要部
のみを示す断面図、第４図は前記第１及び第２実
施例の発光ダイオードを複数個並べた状態の正面
図、第５図は更に他の例の発光ダイオードを示す
正面図、第６図は従来例の発光ダイオードの断面
図、第７図は同発光ダイオードの要部のみを拡大
して示した略図、第８図は発光素子の発光指向特
性のグラフである。
１１……発光素子、１２，１３……リードフレ
ーム、１４……ワイヤー、１５……レンズ部、１
６……キヤツプ、１６ａ，１６ｂ……レンズカツ
ト、１７……孔、１８……ドーム状の曲面、１９
……カツト部。
FIG. 1 is a sectional view of a light emitting diode according to a first embodiment of the present invention, FIG. 2 is a perspective view of the same light emitting diode, and FIG. 3 is a sectional view showing only the main parts of a light emitting diode of a second embodiment. FIG. 4 is a front view of a plurality of light emitting diodes of the first and second embodiments arranged side by side, FIG. 5 is a front view of another light emitting diode, and FIG. 6 is a conventional light emitting diode. FIG. 7 is a schematic enlarged view of only the essential parts of the light emitting diode, and FIG. 8 is a graph of the light emission directional characteristics of the light emitting element. 11... Light emitting element, 12, 13... Lead frame, 14... Wire, 15... Lens section, 1
6... Cap, 16a, 16b... Lens cut, 17... Hole, 18... Dome-shaped curved surface, 19
...Cut part.
１ LED本体と、該LED本体に嵌着した光透過
性の反射部材とからなり、前記反射部材は中央部
に前記LED本体が嵌る貫通孔が形成され、背面
側は前記LED本体の側面から放射される光束を
前面側に略平行光線として反射させるドーム状の
曲面に形成すると共に、前面側は前記平行光線を
集光させるよう凸レンズカツトが施されたことを
特徴とする発光ダイオード。
1 Consists of an LED main body and a light-transmissive reflective member fitted into the LED main body, the reflective member has a through hole in the center into which the LED main body fits, and the back side of the reflective member has a light-transmissive reflective member fitted into the LED main body. 1. A light emitting diode, characterized in that the light emitting diode is formed into a dome-shaped curved surface that reflects a luminous flux toward the front side as substantially parallel rays, and has a convex lens cut on the front side so as to condense the parallel rays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60026035A JPS61185980A (en) | 1985-02-13 | 1985-02-13 | Light emitting diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60026035A JPS61185980A (en) | 1985-02-13 | 1985-02-13 | Light emitting diode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61185980A JPS61185980A (en) | 1986-08-19 |
| JPH0436590B2 true JPH0436590B2 (en) | 1992-06-16 |
Family
ID=12182443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60026035A Granted JPS61185980A (en) | 1985-02-13 | 1985-02-13 | Light emitting diode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61185980A (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5174649B1 (en) * | 1991-07-17 | 1998-04-14 | Precision Solar Controls Inc | Led lamp including refractive lens element |
| GB9606695D0 (en) * | 1996-03-29 | 1996-06-05 | Rolls Royce Power Eng | Display sign and an optical element for use with the same |
| JP4271747B2 (en) * | 1997-07-07 | 2009-06-03 | 株式会社朝日ラバー | Translucent coating material for light emitting diode and fluorescent color light source |
| AU9178398A (en) * | 1997-09-25 | 1999-04-12 | University Of Bristol, The | Optical irradiation device |
| ES1058053Y (en) * | 2004-07-14 | 2005-02-01 | Fed Signal Vama Sa | INTERNAL REFLECTION COLIMATOR LENS |
| DE102004042125B4 (en) * | 2004-08-30 | 2008-05-08 | Schefenacker Vision Systems Germany Gmbh & Co. Kg | Lighting unit with a large number of curved surface elements |
| JP4721445B2 (en) * | 2006-09-25 | 2011-07-13 | スタンレー電気株式会社 | Vehicle lighting |
| JP4842090B2 (en) * | 2006-10-26 | 2011-12-21 | 有限会社シマテック | LED lighting device |
| RU2523779C2 (en) * | 2008-05-20 | 2014-07-20 | Конинклейке Филипс Электроникс Н.В. | Optical element for asymmetric light distribution |
| US8388193B2 (en) | 2008-05-23 | 2013-03-05 | Ruud Lighting, Inc. | Lens with TIR for off-axial light distribution |
| EP2286142B1 (en) | 2008-05-23 | 2015-07-29 | Cree, Inc. | Recessed led lighting fixture |
| US9255686B2 (en) | 2009-05-29 | 2016-02-09 | Cree, Inc. | Multi-lens LED-array optic system |
| CN102444844B (en) * | 2010-09-30 | 2014-09-17 | 东莞市帝信光电科技有限公司 | Reflection-type light-emitting diode down light structure |
| US10408429B2 (en) | 2012-02-29 | 2019-09-10 | Ideal Industries Lighting Llc | Lens for preferential-side distribution |
| US9541258B2 (en) | 2012-02-29 | 2017-01-10 | Cree, Inc. | Lens for wide lateral-angle distribution |
| USD718490S1 (en) | 2013-03-15 | 2014-11-25 | Cree, Inc. | LED lens |
| US10468566B2 (en) | 2017-04-10 | 2019-11-05 | Ideal Industries Lighting Llc | Hybrid lens for controlled light distribution |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5055282A (en) * | 1973-08-10 | 1975-05-15 | ||
| JPS5315771B2 (en) * | 1973-11-14 | 1978-05-27 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4912270U (en) * | 1972-05-12 | 1974-02-01 | ||
| JPS49122701U (en) * | 1973-02-17 | 1974-10-21 | ||
| JPS5315771U (en) * | 1976-07-21 | 1978-02-09 |
-
1985
- 1985-02-13 JP JP60026035A patent/JPS61185980A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5055282A (en) * | 1973-08-10 | 1975-05-15 | ||
| JPS5315771B2 (en) * | 1973-11-14 | 1978-05-27 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61185980A (en) | 1986-08-19 |
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