JPH1012011A - Lighting equipment - Google Patents
Lighting equipmentInfo
- Publication number
- JPH1012011A JPH1012011A JP8156438A JP15643896A JPH1012011A JP H1012011 A JPH1012011 A JP H1012011A JP 8156438 A JP8156438 A JP 8156438A JP 15643896 A JP15643896 A JP 15643896A JP H1012011 A JPH1012011 A JP H1012011A
- Authority
- JP
- Japan
- Prior art keywords
- light
- light guide
- peripheral surface
- inner peripheral
- ring
- 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
Landscapes
- Planar Illumination Modules (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
(57)【要約】
【課題】 大掛かりな照明設備を用いることなく、極め
て簡素化された照明設備で製品を囲む３６０度の全方向
から照明を行ない無影照明を行う。
【解決手段】 曲面導光体(4) の一端側に形成されたリ
ング状光入射部(5) をライトガイド(3) の先端に形成さ
れたリング状の光出射部(2) に装着すると、当該光出射
部(2) からリング状に出射された光が曲面導光体(4) 内
に入射される。この光は、曲面導光体(4) 内をその一端
側から他端側に向かって進み、外周面(4A)及び他端面(4
B)に到達した光は内周面(4C)に向かって反射され、内周
面(4C)に到達した光は当該内周面(4C)から導光体(4) で
囲まれた空間内に出射される。このとき、曲面導光体
(4) は、一端側から他端側に向かって拡径する円錐状又
はドーム状の曲面導光体で形成されているので、照明し
ようとする製品の位置する下方に向かって製品を囲む３
６０度の全方向から万遍なく光が照射される。
(57) [Problem] To provide shadowless illumination by illuminating from all directions of 360 degrees surrounding a product with extremely simplified lighting equipment without using large-scale lighting equipment. SOLUTION: When a ring-shaped light incident portion (5) formed on one end side of a curved light guide (4) is attached to a ring-shaped light emitting portion (2) formed at a tip of a light guide (3). The light emitted from the light emitting portion (2) in a ring shape enters the curved light guide (4). This light travels inside the curved light guide (4) from one end to the other end, and the outer peripheral surface (4A) and the other end surface (4
Light arriving at the inner peripheral surface (4C) is reflected toward the inner peripheral surface (4C), and light arriving at the inner peripheral surface (4C) is reflected from the inner peripheral surface (4C) in the space surrounded by the light guide (4). Is emitted. At this time, the curved light guide
(4) is formed by a conical or dome-shaped curved light guide whose diameter increases from one end to the other end, so that the product surrounding the product to be illuminated is positioned at a lower position.
Light is uniformly emitted from all directions at 60 degrees.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、先端にリング状の
光出射部が形成されたライトガイドに装着される照明装
置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illuminating device mounted on a light guide having a ring-shaped light emitting portion formed at the tip.
【０００２】[0002]
【従来の技術】無人化された工場などでは、ＣＣＤカメ
ラを用いたイメージセンシングによるパターン認識を行
うことにより、コンベアで送られてきた製品の種類を自
動的に識別したり、製品の品質管理を行ったりしてい
る。この場合に、製品の外観を正しく捉えるためにはな
るべく影のない照明を行うことが好ましい。2. Description of the Related Art In unmanned factories and the like, pattern recognition is performed by image sensing using a CCD camera to automatically identify the type of product sent on a conveyor and to control product quality. Have gone. In this case, it is preferable to perform illumination with as little shadow as possible in order to correctly grasp the appearance of the product.
【０００３】このため、従来はＣＣＤカメラで撮影しよ
うとする製品に対して、当該ＣＣＤカメラの周囲に電球
などの点光源や蛍光灯等の線光源を多数配置して、全方
向から万遍なく光が照射されるようにしているが、例え
ば、多数の点光電を用いた場合にはその点光源の数だけ
影ができてしまいかえってパターン認識が行ないにくく
なる場合があり、また、点光源，線光源のいずれも各光
源ごとにソケット及びその配線を設けなければならず、
照明設備が大掛かりで複雑になるだけでなく、光源自体
の発熱によりＣＣＤカメラなどの電子機器に悪影響を与
えるという問題があった。For this reason, conventionally, for a product to be photographed by a CCD camera, a large number of point light sources such as a light bulb or a line light source such as a fluorescent lamp are arranged around the CCD camera so as to be evenly distributed from all directions. Although light is emitted, for example, when a large number of point photoelectric elements are used, shadows may be formed by the number of the point light sources, which may make it difficult to perform pattern recognition. For each of the linear light sources, a socket and its wiring must be provided for each light source,
Not only is the lighting equipment large and complicated, but also the heat generated by the light source itself adversely affects electronic equipment such as a CCD camera.
【０００４】そこで、図５に示すように、平板状の導光
体４０からなる４枚の平面状発光体４１を製品の周囲に
斜め上方に配置して照明することが提案されている。こ
の平面状発光体４１は、ライトガイド４２の先端に形成
された直線状の光出射部４３に装着される光入射面４４
がその一端縁に形成され、その他の端縁及び背面が当該
導光体４０内を進行してきた光を表面側に反射させる反
射面４５に形成されると共に、表面が光照射面４６に形
成されている。これによれば、４本のバンドルファイバ
４２の光出射部４３の夫々に平面状発光体４１を装着し
て配置するだけでよく、設備自体が比較的簡素化される
と共に、光源自体はＣＣＤカメラから離れたところに設
置できるので、光源が発熱してもＣＣＤカメラに悪影響
を及ぼすことがないというメリットがある。Therefore, as shown in FIG. 5, it has been proposed to arrange four flat light-emitting members 41 each composed of a flat light-guiding member 40 obliquely upward around the product for illumination. The planar light emitting body 41 has a light incident surface 44 attached to a linear light emitting portion 43 formed at the tip of the light guide 42.
Is formed on one end thereof, the other end and the back surface are formed on a reflection surface 45 for reflecting light traveling inside the light guide 40 to the front side, and the surface is formed on a light irradiation surface 46. ing. According to this, it is only necessary to mount and arrange the planar light-emitting bodies 41 on each of the light emitting portions 43 of the four bundle fibers 42, the equipment itself is relatively simplified, and the light source itself is a CCD camera. Since it can be installed at a place away from the camera, there is an advantage that even if the light source generates heat, it does not adversely affect the CCD camera.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、４枚の
平面状発光体４１を用いて照明する場合は４方向からし
か照明することができないため、例えば、球状の製品を
照明する場合は、平面状発光体４１に対向する４方向が
明るくなってしまい、製品形状によっては明暗の分布を
生じてパターン認識を行ないにくくなる場合があるとい
う問題が残る。これを解消するためには、平面状発光体
４１の数を増やして正多角形となるように配置すればよ
いが、この場合は、平板状発光体４１の数分だけライト
ガイド４２が必要になるので、多数の点光源，線光源を
配する場合にその数分だけソケットが必要になるのと同
様に照明設備が大掛かりになってしまう。However, when illuminating using four planar light-emitting elements 41, illumination can be performed from only four directions. For example, when illuminating a spherical product, a flat product is used. There remains a problem that the four directions facing the light-emitting body 41 become bright, and depending on the product shape, a distribution of brightness and darkness may occur, making it difficult to perform pattern recognition. In order to solve this problem, the number of the planar light-emitting bodies 41 may be increased so as to form a regular polygon. In this case, the light guides 42 are required for the number of the flat light-emitting bodies 41. Therefore, when arranging a large number of point light sources and line light sources, the number of sockets is required as much as the number of the light sources and the lighting equipment becomes large.
【０００６】すなわち、照明設備を簡素化しようとすれ
ばパターン認識を正確に行うことができず、パターン認
識を正確に行えるように無影照明にしようとすれば照明
設備が大掛かりになってしまうという。そこで、本発明
は、大掛かりな照明設備を用いることなく、極めて簡素
化された照明設備で無影照明を行うことを技術的課題と
している。That is, if the lighting equipment is simplified, pattern recognition cannot be performed accurately, and if shadowless lighting is used so that pattern recognition can be performed accurately, the lighting equipment becomes large-scale. . Therefore, it is a technical object of the present invention to perform shadowless illumination with extremely simplified lighting equipment without using large-scale lighting equipment.
【０００７】[0007]
【課題を解決するための手段】この課題を解決するため
に、本発明は、先端にリング状の光出射部が形成された
ライトガイドに装着して使用する照明装置であって、前
記ライトガイドの光出射部に装着されてその出射光を内
部に導入するリング状光入射部が形成された一端側から
他端側に向かって拡径する曲面状導光体で形成され、当
該曲面導光体は、外周面及び他端面がその内部を進行し
てきた光を内側に反射させる反射面で形成され、内周面
にはその内部を進行してきた光を当該導光体で囲まれた
空間内に照射させる照射面が形成されたことを特徴とす
る。SUMMARY OF THE INVENTION To solve this problem, the present invention relates to a lighting device which is used by being mounted on a light guide having a ring-shaped light emitting portion formed at a tip thereof. A ring-shaped light incident portion, which is mounted on the light emitting portion of the light guide and has a ring-shaped light incident portion for introducing the emitted light into the inside, is formed of a curved light guide that increases in diameter from one end side to the other end side. The body has an outer peripheral surface and the other end surface formed of a reflective surface that reflects the light traveling inside the body toward the inside, and the inner peripheral surface receives the light traveling inside the body in a space surrounded by the light guide. An irradiation surface for irradiating the light is formed.
【０００８】本発明によれば、曲面導光体の一端側に形
成されたリング状光入射部をライトガイドの先端に形成
されたリング状の光出射部に装着すると、当該光出射部
からリング状に出射された光が曲面導光体内に入射され
る。そして、この光は、当該導光体の一端側から他端側
に向かって進み、外周面及び他端面に到達した光は導光
体内に反射され、内周面に到達した光は当該内周面から
導光体で囲まれた空間内に出射される。このとき曲面導
光体は、一端側から他端側に向かって拡径する円錐状又
はドーム状の曲面導光体で形成されているので、照明し
ようとする製品の位置する下方に向かって製品を囲む３
６０度の全方向から万遍なく光が照射されることとな
る。したがって、球状の製品を照明するときでも、明暗
分布を生ずることなく均一な明るさで影のない照明がで
きる。According to the present invention, when the ring-shaped light incident portion formed on one end side of the curved light guide is attached to the ring-shaped light emitting portion formed at the tip of the light guide, the ring is formed from the light emitting portion. The light emitted in the shape is incident on the curved light guide. The light travels from one end to the other end of the light guide, the light reaching the outer peripheral surface and the other end is reflected into the light guide, and the light reaching the inner peripheral surface is The light is emitted from the surface into the space surrounded by the light guide. At this time, since the curved light guide is formed of a conical or dome-shaped curved light guide whose diameter increases from one end to the other end, the product is directed downward where the product to be illuminated is located. 3 surrounding
Light is uniformly emitted from all directions at 60 degrees. Therefore, even when illuminating a spherical product, illumination with uniform brightness and no shadow can be performed without producing a light-dark distribution.
【０００９】[0009]
【発明の実施の形態】以下、本発明の実施の形態につい
て図面を伴って具体的に説明する。図１は本発明に係る
照明装置を示す断面図、図２は導光体内部の光の進行状
態を示す説明図、図３及び図４は他の実施の形態を示す
断面図である。Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a lighting device according to the present invention, FIG. 2 is an explanatory view showing a traveling state of light inside a light guide, and FIGS. 3 and 4 are cross-sectional views showing another embodiment.
【００１０】図中１は、先端にリング状の光出射部２が
形成されたライトガイド３に装着して使用される照明装
置であって、一端側から他端側に向かって拡径する曲面
状導光体４で形成され、前記一端側には前記ライトガイ
ド３の光出射部２に装着されてその出射光を導入するリ
ング状光入射部５が一体に形成されている。曲面導光体
４は、例えば透明なアクリル樹脂で形成され、前記光入
射部５は内周面５Ａ及び外周面５Ｂとも反射面に形成さ
れると共に、内周面５Ａ側の反射面が光出射方向に対し
て外側に傾斜したテーパ面で形成され、前記ライトガイ
ド３の光出射部２から照射された光を、当該光出射部２
と対向する端面５Ｃから導入して、拡径する曲面導光体
４の外周面４Ａに向かって反射させるように成されてい
る。In FIG. 1, reference numeral 1 denotes a lighting device which is used by being mounted on a light guide 3 having a ring-shaped light emitting portion 2 formed at a tip thereof, and has a curved surface whose diameter increases from one end to the other end. A ring-shaped light incident portion 5 which is attached to the light emitting portion 2 of the light guide 3 and guides the emitted light is formed integrally with the light guide 3 at one end side. The curved light guide 4 is formed of, for example, a transparent acrylic resin. The light incident portion 5 is formed as a reflection surface on both the inner peripheral surface 5A and the outer peripheral surface 5B, and the reflection surface on the inner peripheral surface 5A side emits light. The light emitted from the light emitting portion 2 of the light guide 3 is formed by a tapered surface inclined outward with respect to the direction.
The light is guided from the end face 5C facing the light guide 4 and is reflected toward the outer peripheral surface 4A of the curved light guide 4 whose diameter increases.
【００１１】そして、曲面導光体４の外周面４Ａ及び他
端面４Ｂは、前記光入射部２から入射されて当該導光体
４の内部を進行する光を内周面４Ｃに向かって反射させ
る均一な面状反射面に形成されている。また、当該導光
体４の内周面４Ｃは、その表面がブラスト加工されて粗
され、当該導光体４の内部を進行する光を内周面４Ｃか
ら当該導光体４で囲まれた空間内に拡散して照射するよ
うになされている。The outer peripheral surface 4A and the other end surface 4B of the curved light guide 4 reflect the light incident from the light incident portion 2 and traveling inside the light guide 4 toward the inner peripheral surface 4C. It is formed on a uniform planar reflection surface. In addition, the inner peripheral surface 4C of the light guide 4 is roughened by blasting the surface, and light traveling inside the light guide 4 is surrounded by the light guide 4 from the inner peripheral surface 4C. Irradiation is performed by diffusing into space.
【００１２】なお、前記リング状光入射部５の内周面５
Ａ及び外周面５Ｂや、曲面導光体４の外周面４Ａ及び他
端面４Ｂに形成された反射面は、その表面に反射用の白
色塗料の塗膜６Ｗとこれを保護する黒色塗料の塗膜６Ｂ
が塗布されて形成されているが、この構造は本発明の実
施形態の一例であって、これに限定されるものではな
い。また、７は製品を撮影するためのＣＣＤカメラであ
って、ライトガイド３のリング状の光出射部２の内側に
配設されている。The inner peripheral surface 5 of the ring-shaped light incident portion 5
A and the outer peripheral surface 5B and the reflecting surfaces formed on the outer peripheral surface 4A and the other end surface 4B of the curved light guide 4 have a coating 6W of a white paint for reflection and a coating of a black paint for protecting the surfaces. 6B
Is applied, but this structure is an example of an embodiment of the present invention and is not limited to this. Reference numeral 7 denotes a CCD camera for photographing a product, which is disposed inside the ring-shaped light emitting portion 2 of the light guide 3.
【００１３】以上が本発明の構成例であって、次にその
作用について、図２を伴って説明する。まず、ライトガ
イド３を光源（図示せず）に接続し、その光出射部２に
曲面導光体５を装着して光源を発光させると、光はライ
トガイド３に導かれてその光出射部２から曲面導光体４
のリング状光入射部５に入射される。そして、光入射部
５に入射された光は、光出射方向に対して外側に傾斜し
たテーパ面に形成された内周面５Ａ側の反射面で反射さ
れ、拡径する曲面導光体４の外周面４Ａに向かって反射
する。The above is an example of the configuration of the present invention. Next, the operation thereof will be described with reference to FIG. First, the light guide 3 is connected to a light source (not shown), and the curved light guide 5 is attached to the light emitting portion 2 to cause the light source to emit light. 2 to curved light guide 4
Is incident on the ring-shaped light incident portion 5 of the light emitting device. The light incident on the light incident part 5 is reflected by the reflection surface on the inner peripheral surface 5A side formed on the tapered surface inclined outward with respect to the light emission direction, and the light of the curved surface light guide 4 whose diameter is increased. The light is reflected toward the outer peripheral surface 4A.
【００１４】そして、曲面導光体４内に導かれた光は、
その外周面４Ａ及び他端面４Ｂで反射しながら、当該導
光体４内を進み、内周面４Ｃに到達した光は、そのほと
んどが曲面導光体４で囲まれた空間内に照射されること
となる。このとき、当該導光体４の内周面４Ｃは、その
表面がブラスト加工されて粗されているので、当該導光
体４で囲まれた空間内に拡散して照射され、したがっ
て、内周面４Ｃのどの部分からも明暗のばらつきがない
輝度分布が均一な照明光が得られる。The light guided into the curved light guide 4 is
The light that travels inside the light guide 4 while being reflected by the outer peripheral surface 4A and the other end surface 4B and reaches the inner peripheral surface 4C is mostly radiated into the space surrounded by the curved light guide 4. It will be. At this time, since the inner peripheral surface 4C of the light guide 4 is roughened by blasting the surface, the inner peripheral surface 4C is diffused and radiated into the space surrounded by the light guide 4, so that the inner periphery 4C is exposed. Illumination light having a uniform luminance distribution without variation in brightness is obtained from any part of the surface 4C.
【００１５】また、曲面導光体４は、光入射部５が形成
された一端側から他端側に向かって拡径する円錐面に形
成されているので、導光体４の内周面４Ｃを下向きにし
てその下方に置いた製品を照明しようとする場合、導光
体４の内周面４Ｃから下方に向かって拡散光が照射され
ると共に、製品を囲む３６０度の全方向から万遍なく光
が照射され、したがって、球状の製品を照明するときで
も、明暗分布を生ずることなく明るさの均一な影のない
照明ができる。これにより、ＣＣＤカメラ７で製品を撮
影するときも、その製品形状を正確に把握することかで
き、イメージセンシングによるパターン認識を行うとき
に誤動作を起こすこともない。Since the curved light guide 4 is formed as a conical surface whose diameter increases from one end where the light incident portion 5 is formed to the other end, the inner peripheral surface 4C of the light guide 4 is formed. When the product placed downward is to be illuminated, the diffused light is radiated downward from the inner peripheral surface 4C of the light guide 4 and the product is omnidirectional from all directions of 360 degrees surrounding the product. Therefore, even when illuminating a spherical product, a shadow-free illumination with a uniform brightness can be obtained without generating a light-dark distribution. Thus, even when a product is photographed by the CCD camera 7, the product shape can be accurately grasped, and no malfunction occurs when performing pattern recognition by image sensing.
【００１６】図３は他の実施形態を示す断面図である。
本例の曲面導光体４は、光入射部５が形成された一端側
から他端側に向かって拡径するドーム状曲面に形成され
ている。この場合も、円錐面で曲面導光体を形成した場
合と同様に、導光体４の内周面４Ｃから下方に向かって
拡散光が照射されると共に、製品を囲む３６０度の全方
向から万遍なく光が照射され、したがって、球状の製品
を照明するときでも、明暗分布を生ずることなく均一な
明るさで影のない照明ができる。FIG. 3 is a sectional view showing another embodiment.
The curved light guide 4 of this example is formed as a dome-shaped curved surface whose diameter increases from one end where the light incident portion 5 is formed toward the other end. Also in this case, similarly to the case where the curved light guide is formed by the conical surface, the diffused light is irradiated downward from the inner peripheral surface 4C of the light guide 4 and from all directions of 360 degrees surrounding the product. Evenly illuminating the light, therefore, even when illuminating a spherical product, it is possible to achieve illumination with uniform brightness and without shadows without producing a light-dark distribution.
【００１７】また、本例の照明装置１は、図４に示すよ
うにリング状入射部５が形成された一端側から他端側に
向かって延びる同一径の円筒形の曲面導光体８で形成さ
れている場合であってもよい。この場合は、曲面導光体
８の外周面８Ａ及び他端面８Ｂがその内部を進行してき
た光を内側に反射させる反射面で形成され、内周面８Ｃ
にはその内部を進行してきた光を当該導光体８で囲まれ
た空間内に拡散して照射させる照射面が形成されてい
る。Further, as shown in FIG. 4, the illumination device 1 of this embodiment comprises a cylindrical light guide 8 having the same diameter and extending from one end to the other end where the ring-shaped incident portion 5 is formed. It may be the case that it is formed. In this case, the outer peripheral surface 8A and the other end surface 8B of the curved light guide 8 are formed by reflecting surfaces that reflect the light traveling inside the inner surface 8A, and the inner peripheral surface 8C.
Is formed with an irradiation surface for diffusing and irradiating the light traveling inside the space into the space surrounded by the light guide 8.
【００１８】そして、曲面形導光体８で囲まれた空間に
照明しようとする製品をおいて、ライトガイド３を介し
て当該導光体８内に光を入射させれば、内周面８Ｃから
拡散光が照射され、製品を囲む３６０度の全方向から万
遍なく光が照射される。また、曲面導光体８の内周面８
Ｃからは、拡散光が照射されるので、内周面８Ｃが製品
の上面にも光か照射されることとなり、輝度分布が比較
的均一な照明光が得られる。In a product to be illuminated in the space surrounded by the curved light guide 8, if light enters the light guide 8 through the light guide 3, the inner peripheral surface 8 C And diffused light is irradiated from all directions of 360 degrees surrounding the product. Also, the inner peripheral surface 8 of the curved light guide 8
Since the diffused light is emitted from C, the inner peripheral surface 8C is also irradiated with the light on the upper surface of the product, and illumination light having a relatively uniform luminance distribution can be obtained.
【００１９】[0019]
【発明の効果】以上述べたように、本発明によれば、リ
ング状の光出射部を有するライトガイドに曲面導光体を
装着するという極めて簡単な構成で、照明しようとする
製品を囲む３６０度の全方向から万遍なく光を照射する
ことができるという大変優れた効果を有する。As described above, according to the present invention, a light guide having a ring-shaped light emitting portion is provided with a curved light guide in a very simple configuration, and a product surrounding a product to be illuminated is provided. It has a very excellent effect that light can be irradiated uniformly from all directions.
【図１】本発明に係る照明装置の一例を示す断面図。FIG. 1 is a cross-sectional view illustrating an example of a lighting device according to the present invention.
【図２】導光体内部の光の進行状態の一例を示す説明
図。FIG. 2 is an explanatory diagram showing an example of a traveling state of light inside a light guide.
【図３】他の実施形態を示す断面図。FIG. 3 is a cross-sectional view showing another embodiment.
【図４】さらに他の実施形態を示す断面図。FIG. 4 is a sectional view showing still another embodiment.
【図５】従来装置を示す断面図。FIG. 5 is a sectional view showing a conventional device.
１・・・照明装置 ２・・・光出射部 ３・・・ライトガイド ４・・・曲面状導光体 ４Ａ・・外周面 ４Ｂ・・他端面 ４Ｃ・・内周面 ５・・・リング状光入射部 ８・・・円筒形導光体 ８Ａ・・外周面 ８Ｂ・・他端面 ８Ｃ・・内周面 DESCRIPTION OF SYMBOLS 1 ... Illumination device 2 ... Light emitting part 3 ... Light guide 4 ... Curved surface light guide 4A ... Outer peripheral surface 4B ... Other end surface 4C ... Inner peripheral surface 5 ... Ring shape Light incident portion 8: cylindrical light guide 8A: outer peripheral surface 8B: other end surface 8C: inner peripheral surface
Claims (2)
されたライトガイド（３）に装着して使用する照明装置
であって、前記ライトガイド（３）の光出射部（２）に
装着されてその出射光を内部に導入するリング状光入射
部（５）が形成された一端側から他端側に向かって拡径
する曲面状導光体（４）で形成され、当該曲面導光体
（４）は、外周面（4A）及び他端面（4B）がその内部を
進行してきた光を内側に反射させる反射面で形成され、
内周面（4C）にはその内部を進行してきた光を当該導光
体（４）で囲まれた空間内に照射させる照射面が形成さ
れたことを特徴とする照明装置。1. A lighting device used by being attached to a light guide (3) having a ring-shaped light emitting portion (2) formed at a tip thereof, wherein the light emitting portion (2) of the light guide (3) is provided. A light guide (4) having a ring-shaped light incident portion (5), which is mounted on the light guide member and has a ring-shaped light incident portion (5) formed therein, whose diameter increases from one end to the other end. The light guide (4) has an outer peripheral surface (4A) and another end surface (4B) formed of a reflective surface that reflects light traveling inside thereof toward the inside,
A lighting device characterized in that an irradiation surface is formed on an inner peripheral surface (4C) for irradiating light traveling inside thereof into a space surrounded by the light guide (4).
されたライトガイド（３）に装着して使用する照明装置
であって、前記ライトガイド（３）の光出射部（２）に
装着されてその出射光を内部に導入するリング状光入射
部（５）が形成された一端側から他端側に向かって延び
る円筒形導光体（８）で形成され、当該円筒形導光体
（８）は、外周面（8A）及び他端面（8B）がその内部を
進行してきた光を内側に反射させる反射面で形成され、
内周面（8C）にはその内部を進行してきた光を当該導光
体（８）で囲まれた空間内に照射させる照射面が形成さ
れたことを特徴とする照明装置。2. An illuminating device used by being attached to a light guide (3) having a ring-shaped light emitting portion (2) formed at a tip thereof, wherein the light emitting portion (2) of the light guide (3) is used. And a cylindrical light guide (8) extending from one end side to the other end side in which a ring-shaped light incident portion (5) for introducing the emitted light into the inside is formed. The light body (8) has an outer peripheral surface (8A) and the other end surface (8B) formed of a reflecting surface that reflects light traveling inside thereof to the inside,
A lighting device characterized in that an irradiation surface is formed on an inner peripheral surface (8C) for irradiating light traveling inside thereof into a space surrounded by the light guide (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15643896A JP3954135B2 (en) | 1996-06-18 | 1996-06-18 | Lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15643896A JP3954135B2 (en) | 1996-06-18 | 1996-06-18 | Lighting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1012011A true JPH1012011A (en) | 1998-01-16 |
| JP3954135B2 JP3954135B2 (en) | 2007-08-08 |
Family
ID=15627764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15643896A Expired - Fee Related JP3954135B2 (en) | 1996-06-18 | 1996-06-18 | Lighting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3954135B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799139A (en) * | 2005-08-02 | 2010-08-11 | 贝希托尔德控股有限公司 | surgical light |
| JP2014090684A (en) * | 2012-11-01 | 2014-05-19 | Sharp Corp | Illumination device |
| JP2016205380A (en) * | 2015-04-15 | 2016-12-08 | ゼネラル・エレクトリック・カンパニイ | Data acquisition apparatus, system, and method for analyzing strain sensors and monitoring strain of turbine components |
| US11319149B2 (en) | 2016-08-04 | 2022-05-03 | Opex Corporation | Automated storage and retrieval system with detector for detecting items extending beyond dimensional threshold |
| JP2023500118A (en) * | 2019-11-05 | 2023-01-04 | シュンク ソノジステム ゲゼルシャフト ミット ベシュレンクテル ハフツング | Ultrasonic Welder with Integrated Camera Assembly |
-
1996
- 1996-06-18 JP JP15643896A patent/JP3954135B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799139A (en) * | 2005-08-02 | 2010-08-11 | 贝希托尔德控股有限公司 | surgical light |
| JP2014090684A (en) * | 2012-11-01 | 2014-05-19 | Sharp Corp | Illumination device |
| JP2016205380A (en) * | 2015-04-15 | 2016-12-08 | ゼネラル・エレクトリック・カンパニイ | Data acquisition apparatus, system, and method for analyzing strain sensors and monitoring strain of turbine components |
| US11319149B2 (en) | 2016-08-04 | 2022-05-03 | Opex Corporation | Automated storage and retrieval system with detector for detecting items extending beyond dimensional threshold |
| US12091253B2 (en) | 2016-08-04 | 2024-09-17 | Opex Corporation | Automated storage and retrieval system with detector for detecting items extending beyond dimensional threshold |
| JP2023500118A (en) * | 2019-11-05 | 2023-01-04 | シュンク ソノジステム ゲゼルシャフト ミット ベシュレンクテル ハフツング | Ultrasonic Welder with Integrated Camera Assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3954135B2 (en) | 2007-08-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100432045B1 (en) | Line type lighting device | |
| US6783257B2 (en) | Lighting apparatus for inspection of an object | |
| JP3483217B2 (en) | Image reading device | |
| US6582103B1 (en) | Lighting apparatus | |
| JP5807012B2 (en) | Indirect lighting device and article inspection system using the same | |
| JP2003500846A (en) | Lighting device having LED | |
| KR20130006497A (en) | Lighting device | |
| US20100283369A1 (en) | LED bulb and lamp holder thereof | |
| CN101208594A (en) | Obtaining convergent light rays emitted by a planar array of light sources | |
| CN109073197A (en) | Lighting fixtures and inspection equipment | |
| JP3954135B2 (en) | Lighting device | |
| JPH0672046U (en) | Lighting equipment for inspection equipment | |
| JP2000028320A (en) | Image recognition device and image recognition method | |
| JP2003503827A (en) | Lighting equipment and signal lights | |
| JPH02306289A (en) | Light-emitting diode | |
| JPH11160248A (en) | Electronic component mounting state inspection device | |
| JP3993268B2 (en) | Illumination device and illumination light diffuser used therefor | |
| US5628559A (en) | Spherical illuminator | |
| JPH11213725A (en) | Luminaire | |
| JP2000171226A (en) | Flank inspection device | |
| JPS5967673A (en) | Light emitting diode for surface illumination | |
| JPH07190726A (en) | Coaxial lighting device and its method | |
| JPS61105977A (en) | Tv camera | |
| JP3399069B2 (en) | Ring lighting device | |
| JPH0844956A (en) | Display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20061013 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20061024 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20061225 |
|
| 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: 20070410 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20070426 |
|
| R150 | Certificate of patent (=grant) or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110511 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110511 Year of fee payment: 4 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110511 Year of fee payment: 4 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120511 Year of fee payment: 5 |
|
| LAPS | Cancellation because of no payment of annual fees |