JP4587395B2 - Irradiation head - Google Patents
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- JP4587395B2 JP4587395B2 JP2005348274A JP2005348274A JP4587395B2 JP 4587395 B2 JP4587395 B2 JP 4587395B2 JP 2005348274 A JP2005348274 A JP 2005348274A JP 2005348274 A JP2005348274 A JP 2005348274A JP 4587395 B2 JP4587395 B2 JP 4587395B2
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Description
本発明は、照明装置における照射ヘッドに関し、特に面状光源からの出射光を変換するための拡散板を備えた照射ヘッドに関する。 The present invention relates to an irradiation head in an illuminating device, and more particularly to an irradiation head including a diffusion plate for converting light emitted from a planar light source.
従来、LED素子群を面状に配列した光源と拡散板等をハウジング(筐体)に内蔵させてなる照射ヘッドが知られている(例えば、特許文献1参照)。このヘッドの内部には、該文献1の図1あるいは図5に示されるように、透光性拡散手段としての拡散板(5)あるいは(8)が光源(1)に対して、一点に固定された離間距離をもって並行に配置されている。 2. Description of the Related Art Conventionally, there is known an irradiation head in which a light source in which LED element groups are arranged in a plane, a diffusion plate, and the like are built in a housing (housing) (see, for example, Patent Document 1). Inside the head, as shown in FIG. 1 or FIG. 5 of the document 1, a diffusion plate (5) or (8) as a translucent diffusing means is fixed at one point with respect to the light source (1). Are arranged in parallel with the separated distance.
ところで、このような照射ヘッドを搭載した照明装置においては、要求される光の特性を満たす観点から、光源から照射対象物までの照射距離いわゆるワークディスタンス(Work Distance)もある程度限定される。
このことは、上記の離間距離も、照射対象物に対して光源の照度を極力維持しながら均一照射できる距離に固定されている。他方、このワークディスタンスは、照射対象物の大きさや照射ヘッドの設置環境により変化する。したがって、ワークディスタンスが一点に固定された照明装置では、このワークディスタンスの変化に対応して、照度維持と均一照射を確保できない欠点がある。
By the way, in a lighting device equipped with such an irradiation head, the irradiation distance from the light source to the irradiation object, so-called work distance, is limited to some extent from the viewpoint of satisfying the required light characteristics.
This means that the above-mentioned separation distance is also fixed at a distance that allows uniform irradiation while maintaining the illuminance of the light source as much as possible with respect to the irradiation object. On the other hand, this work distance varies depending on the size of the irradiation object and the installation environment of the irradiation head. Therefore, the illumination device in which the work distance is fixed at one point has a drawback that it is impossible to ensure illuminance maintenance and uniform irradiation in response to the change in the work distance.
もちろん、照度を維持しながらワークディスタンスの変化に応じた均一照射光を得るには、種々のワークディスタンスに対応した数種類の照射ヘッドを常備しておけばよいことになる。しかしながら、その反面では、照射ヘッドの購入費用、保管スペース、さらには、照射ヘッドの取り換え作業などを考えると、多大の不利益が浮き彫りになってくる。 Of course, in order to obtain uniform irradiation light according to changes in the work distance while maintaining the illuminance, it is only necessary to have several types of irradiation heads corresponding to various work distances. However, on the other hand, considering the purchase cost of the irradiation head, the storage space, and the replacement operation of the irradiation head, a great disadvantage is highlighted.
このように、従来の照射ヘッドにおいては、ワークディスタンスの変化に対して対応し得ない、という固有の問題が内在していた。この問題は、照射受光素子としてCCDカメラを採用した場合には、受信信号のばらつきあるいは受信信号のレベルの低下につながるため、肉眼による受光の場合と比較し、より深刻な問題となる。 As described above, the conventional irradiation head has an inherent problem that it cannot cope with a change in work distance. This problem becomes more serious when the CCD camera is used as the irradiation light receiving element because it leads to variations in received signals or lowers the level of received signals, compared to the case of receiving light with the naked eye.
したがって、本発明の課題は、ワークディスタンスが変化した状況でもこれに対応でき、もって、照度維持と均一照射とを同時に確保できる照射ヘッドを提供することにある。 Accordingly, an object of the present invention is to provide an irradiation head that can cope with a situation in which the work distance is changed, and can simultaneously maintain illuminance maintenance and uniform irradiation.
本発明によれば、上記の課題は、面状光源および該面状光源に対向する拡散板を内蔵する筐体内部に、光源から照射対象物までの照射距離に応じて該光源からの該拡散板の離間距離を調節し且つ該板を着脱自在に固定し得る二重機構を配することにより解決される。
According to the present invention, the above-described problem is that the diffusion from the light source in the housing containing the planar light source and the diffusion plate facing the planar light source according to the irradiation distance from the light source to the irradiation object. The problem is solved by providing a double mechanism that can adjust the distance between the plates and detachably fix the plates.
本発明によれば、以下のような顕著な効果が奏される。
(1)単一ユニットでありながら、ワークディスタンスの変化に応じて拡散板の離間距離を調整できるので、光量損失の懸念なく、均一照射光が得られる。
(2) 上記(1)のユニットに装着した拡散板を、異なる拡散係数を有する拡散板と容易に交換できる。新たに装着された拡散板についても、(1)と同様に、ワークディスタンスの変化に応じて拡散板の離間距離を調整できる。
(3) 必要に応じて、拡散板が装着されているユニットに、さらに、別の拡散板を追加するだけで、複数枚の拡散板を容易に併用できる。
(4)種々のワークディスタンスに応じた、数種類の照射ヘッドの準備と保管・維持、さらには、照射ヘッドの頻雑な取り換え作業が割愛されるので、極めて経済的である。
According to the present invention, the following remarkable effects are exhibited.
(1) Although the unit is a single unit, the distance between the diffuser plates can be adjusted according to the change in the work distance, so that uniform irradiation light can be obtained without fear of light quantity loss.
(2) The diffusion plate mounted on the unit (1) can be easily replaced with a diffusion plate having a different diffusion coefficient. For the newly installed diffusion plate, the distance between the diffusion plates can be adjusted according to the change in the work distance, as in (1).
(3) If necessary, a plurality of diffusion plates can be easily used by simply adding another diffusion plate to the unit on which the diffusion plate is mounted.
(4) Preparation and storage / maintenance of several types of irradiation heads corresponding to various work distances, and frequent replacement work of irradiation heads are omitted, which is extremely economical.
以下、本発明の照射ヘッドの例について、添付図面を参照しながら説明する。
図1は、本発明に係る照射ヘッドの一例を示す一部破断斜視図である。
図2は、面状光源と拡散板と照射対象物との位置関係を示す斜視図である。
図3は、筐体端部の内壁面の部分拡大斜視図である。
図4は、ポールプランジャーによるスライド板の仮止めの一態様を示す斜視図である。
図5(a)は、本発明に係る照射ヘッドの他の態様を示す概観的斜視図である。
図5(b)は、図5(a)の部分的平面図である。
図5(c)は、図5(a)の内部の部分的斜視図である。
Hereinafter, an example of an irradiation head of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a partially broken perspective view showing an example of an irradiation head according to the present invention.
FIG. 2 is a perspective view showing the positional relationship among the planar light source, the diffusion plate, and the irradiation object.
FIG. 3 is a partially enlarged perspective view of the inner wall surface of the end portion of the housing.
FIG. 4 is a perspective view showing one embodiment of temporary fixing of the slide plate by the pole plunger.
FIG. 5A is a schematic perspective view showing another aspect of the irradiation head according to the present invention.
FIG. 5B is a partial plan view of FIG.
FIG. 5C is a partial perspective view of the inside of FIG.
図1には、縦型の照射ヘッドの例が示されている。図1自体は後述するように、該図に向かって手前の横板(4b)の右側部分を破断した状態の斜視図である。該図において、(1)は面状光源、(2)は面状光源(1)の取付基板、(3)は拡散板、そして、(4)は面状光源(1)および拡散板(3)を内蔵する筐体である。ここで、面状光源(1)と拡散板(3)とは、図2に示すように、所望の離間距離(L)でもって並行に配置されている。また、(S)は照射対象物(被照射面)、(D)は照射対象物に最も近い拡散板(3)から照射対象物(S)までの距離、すなわちワークディスタンスである。なお、このワークディスタンス(D)は、照射ヘッドから照射対象物(S)までの距離とすることもある。
本発明において、上記の面状光源(1)と拡散板(3)とを内蔵する筐体(4)は、光源から照射対象物までの照射距離に応じて離間距離(L)を調節し得しかも該拡散板を着脱自在に固定し得る二重機構を有するわけで、この機構について述べる。
FIG. 1 shows an example of a vertical irradiation head. FIG. 1 itself is a perspective view showing a state in which the right side portion of the front lateral plate (4b) is broken toward the figure, as will be described later. In the figure, (1) is a planar light source, (2) is a mounting substrate for the planar light source (1), (3) is a diffuser plate, and (4) is a planar light source (1) and a diffuser plate (3). ). Here, the planar light source (1) and the diffusion plate (3) are arranged in parallel at a desired separation distance (L) as shown in FIG. Further, (S) is an irradiation object (surface to be irradiated), and (D) is a distance from the diffusion plate (3) closest to the irradiation object to the irradiation object (S), that is, a work distance. In addition, this work distance (D) may be a distance from the irradiation head to the irradiation object (S).
In the present invention, the housing (4) including the planar light source (1) and the diffusion plate (3) can adjust the separation distance (L) according to the irradiation distance from the light source to the irradiation object. In addition, a double mechanism capable of detachably fixing the diffusion plate is provided, and this mechanism will be described.
筐体(4)は、底板(4a)、相対する横板(4b)、側面板(4c)、およびスライド板(4d)から構成され、上方(照射対象物ないし被照射面側)に開放面を有する直方体空間を形成している。さらに、(5)および(6a)〜(6d)は、筐体(4)の三方の内部側壁面に、底板(4a)の面と並行に設けられた溝である。(7)は相対する横板(4b)の端部(図では左方端部)に、溝(5)および(6a)〜(6d)と直交して設けられたスライド溝である。したがって、相対する横板(4b)の溝構造は面対称となる。 The housing (4) is composed of a bottom plate (4a), opposed horizontal plates (4b), side plates (4c), and a slide plate (4d), and is open on the upper side (irradiated object or irradiated surface side). A rectangular parallelepiped space is formed. Further, (5) and (6a) to (6d) are grooves provided on the three side walls of the casing (4) in parallel with the surface of the bottom plate (4a). (7) is a slide groove provided at the end (left end in the figure) of the opposite horizontal plate (4b) orthogonal to the grooves (5) and (6a) to (6d). Therefore, the groove structure of the opposing horizontal plate (4b) is plane symmetric.
ここで、溝(5)には、面状光源(1)の取付基板(2)の三方の端部が嵌入される。この取付基板(2)自体は、底板(4a)に別の固定手段で固定されてもよい。他方、溝(6a)〜(6d)のいずれかには、拡散板の三方の端部が着脱自在に嵌入される。つまり、ワークディスタンス(D)の変化に呼応して、拡散板(3)は溝(6a)〜(6d)のいずれかに嵌入される。この位置変更により、離間距離(L)が調整され、その結果、ワークディスタンスの変化に応じた仕様となる。このような離間距離(L)の調整は既に装着された拡散板(3)に限らず、該板を別の拡散係数を有する拡散板と交換する場合にも適用される。拡散板(3)の位置変更あるいは交換時には、スライド板(4d)は筐体(4)の上方に引き上げられているが、その後は、スライド板(4d)をスライド溝(7)に沿って底板(4a)面まで下降させ、拡散板(3)および取付基板(2)をそれらの端面で固定する。その際、必要に応じて、図4に示すように、スライド板(4d)の下部の両隅で横板(4筐体)に向けてボールプランジャー(8)を差し込んで仮止めしてもよい。 Here, the three ends of the mounting substrate (2) of the planar light source (1) are fitted into the groove (5). The mounting substrate (2) itself may be fixed to the bottom plate (4a) by another fixing means. On the other hand, three end portions of the diffusion plate are detachably inserted into any of the grooves (6a) to (6d). That is, the diffusion plate (3) is inserted into any of the grooves (6a) to (6d) in response to the change in the work distance (D). By this position change, the separation distance (L) is adjusted, and as a result, the specification conforms to the change of the work distance. Such adjustment of the separation distance (L) is not limited to the already installed diffusion plate (3), and is also applied when the plate is replaced with a diffusion plate having another diffusion coefficient. When the position of the diffusion plate (3) is changed or replaced, the slide plate (4d) is pulled up above the housing (4). Thereafter, the slide plate (4d) is moved along the slide groove (7) to the bottom plate. (4a) The surface is lowered to the surface, and the diffusion plate (3) and the mounting substrate (2) are fixed at their end surfaces. At that time, if necessary, as shown in FIG. 4, the ball plunger (8) may be inserted into the horizontal plate (4 housing) at both lower corners of the slide plate (4d) and temporarily fixed. Good.
以上のことからも明らかなように、本発明で特徴的なことは、単一の照射ユニット内に、ワークディスタンス(D)の変化に対応し得る、拡散板(3)の離間距離(L)を調整し且つ該板を着脱自在に固定するよな二重機構を設けたことにある。 As is clear from the above, what is characteristic of the present invention is that the diffusion distance (L) of the diffusion plate (3) that can cope with the change of the work distance (D) in a single irradiation unit. And a dual mechanism for detachably fixing the plate is provided.
本発明においては、面状光源は、電球群やLED素子群を二次元に配列して形成される。LED素子としては、標準的な光量が得られるLEDや高輝度タイプ等、市販されている各種仕様のものが採用される。LED素子を用いる場合は、それらの20個〜1000個程度を取付基板(2)上に固定すればよい。一方、拡散板(3)は、面状光源(1)からの入射光を指向性なく全方位に亘って拡散させる機能を有し、本発明においては重要な要素となる。拡散板(3)は、硝子基板あるいはアクリル樹脂等の樹脂基板の片面あるいは両面に凹凸を施したものや顔料を混ぜたもので、0.2〜0.95程度の拡散係数と15%〜90%程度の透過率を有するものが好ましい。離間距離(L)は、通常0mm〜200mmの範囲で間歇的または連続的に調整される。溝(5)、(6a)〜(6d)、および(7)については、それぞれに、取付基板(2)、拡散板(3)、およびスライド板(4d)の厚みに対応させればよい。また、溝(6a)〜(6d)については、溝間の間隔が5mm〜100mm程度にあればよい。 In the present invention, the planar light source is formed by two-dimensionally arranging light bulb groups and LED element groups. As the LED element, various types of commercially available specifications such as an LED capable of obtaining a standard amount of light and a high luminance type are adopted. When LED elements are used, about 20 to 1000 of them may be fixed on the mounting substrate (2). On the other hand, the diffusion plate (3) has a function of diffusing incident light from the planar light source (1) in all directions without directivity, and is an important element in the present invention. The diffusing plate (3) is a glass substrate or a resin substrate such as an acrylic resin having one or both surfaces provided with irregularities or a pigment, and has a diffusion coefficient of about 0.2 to 0.95 and 15% to 90%. Those having a transmittance of about% are preferred. The separation distance (L) is usually adjusted intermittently or continuously in the range of 0 mm to 200 mm. The grooves (5), (6a) to (6d), and (7) may be made to correspond to the thicknesses of the mounting substrate (2), the diffusion plate (3), and the slide plate (4d), respectively. Moreover, about groove | channel (6a)-(6d), the space | interval between grooves should just be about 5 mm-100 mm.
図1の態様では、一枚の拡散板が用いられている。しかしながら、この態様で、同じ拡散係数の拡散板を併用してもよいし、また、拡散係数の異なる複数枚の拡散板を併用してもよい。これにより、照度維持と均一照射とが高精度下に実現する。このことは、特にLED素子群からなる面状光源(1)を採用する場合に意味がある。周知のように、隣り合うLED素子間では、光が途切れる部分(“暗所現象”)が生じる。しかしながら、この暗所現象は、本発明にしたがって複数枚の拡散板を用いることにより解消され、光源の光量損失がなくなるばかりか照射光もさらに均一化される。各拡散板は、0.2〜0.95程度の拡散係数と15%〜90%程度の透過率を有するものを採用する。 In the embodiment of FIG. 1, a single diffusion plate is used. However, in this aspect, diffusion plates having the same diffusion coefficient may be used in combination, or a plurality of diffusion plates having different diffusion coefficients may be used in combination. Thereby, illuminance maintenance and uniform irradiation are realized with high accuracy. This is particularly significant when the planar light source (1) composed of LED element groups is employed. As is well known, a portion where light is interrupted (“dark phenomenon”) occurs between adjacent LED elements. However, this dark place phenomenon is eliminated by using a plurality of diffusion plates according to the present invention, and not only the light quantity loss of the light source is eliminated, but also the irradiation light is made more uniform. Each diffusion plate employs a diffusion coefficient of about 0.2 to 0.95 and a transmittance of about 15% to 90%.
ところで、図1の態様では、拡散板(3)の固定は間歇的な固定方式である。しかし、本発明の別の態様では、拡散板(3)を、必要に応じて面状光源(1)共々、スライド自在に設置することにより、離間距離(L)を連続的に調整することもできる。このようなスライド方式を横型の照射ヘッド採用した例が、図5(a)〜図5(c)に示されている。 By the way, in the aspect of FIG. 1, fixation of a diffusion plate (3) is an intermittent fixing system. However, in another aspect of the present invention, the separation distance (L) may be continuously adjusted by slidably installing the diffusion plate (3) together with the planar light source (1) as necessary. it can. An example in which such a slide method adopts a horizontal irradiation head is shown in FIGS. 5 (a) to 5 (c).
図5(a)の態様では、先ず、拡散板(3)を筐体(4)の上面にある開閉式上蓋(4d)を開けた状態で出し入れ自在としている。(9)は蝶番で、(10a)および(10b)はクリップ(ラック)部材である。そして、拡散板(3)を筐体(4)内部で光の出射方向に沿ってスライド自在とした機構が示されている。したがって、この図では、図面に向かって筐体(4)の左側面が、図2に示した照射対象物(S)の面となる。 In the embodiment shown in FIG. 5A, first, the diffusing plate (3) can be freely put in and out with the openable top cover (4d) on the upper surface of the housing (4) opened. (9) is a hinge, and (10a) and (10b) are clip (rack) members. And the mechanism which made the diffuser plate (3) slidable along the light emission direction inside the housing (4) is shown. Therefore, in this figure, the left side surface of the housing (4) toward the drawing is the surface of the irradiation object (S) shown in FIG.
さらに、(11)は横板(4b)に沿って穿けられたスリット、(12)はネジロック(ストッパー)付き摘み、(13)は心棒(螺子)で、これに摘み(12)が時計方向に螺合している。(14)は心棒(13)の先端が螺合されて固定されたL字金具、そして、(15)はL字金具(14)を懸架するガイドレールである。L字金型(14)の一方の辺部は横板(4b)の内壁と並行に設けられ、したがって、他方の辺部は張り出し状態にある。以上の部材は、相対する横板(4b)に面対象に設けられ、その際、横板(4b)の両内壁から張り出したL字金具(14)のそれぞれの片辺に拡散板(3)が螺子止めされている。 Further, (11) is a slit formed along the horizontal plate (4b), (12) is a knob with a screw lock (stopper), (13) is a mandrel (screw), and the knob (12) is clockwise. It is screwed. (14) is an L-shaped bracket fixed by screwing the tip of the mandrel (13), and (15) is a guide rail for suspending the L-shaped bracket (14). One side of the L-shaped mold (14) is provided in parallel with the inner wall of the horizontal plate (4b), and therefore the other side is in an overhanging state. The above members are provided on the opposite horizontal plate (4b) as a surface object. At this time, the diffusion plate (3) is provided on each side of the L-shaped metal fitting (14) protruding from both inner walls of the horizontal plate (4b). Is screwed.
以上の状態は、図5(b)に、拡散板(3)の固定状態を筐体(4)の上部から観た平面図として、そして、図5(c)には、上記の拡散板(3)の固定状態を筐体(4)の内部から見た斜視図として示されるとおりである。これらの図において、(16)は拡散板(3)を固定するための螺子である。 The above state is shown in FIG. 5 (b) as a plan view of the fixed state of the diffusion plate (3) viewed from the top of the housing (4), and in FIG. The fixed state of 3) is as shown as a perspective view seen from the inside of the housing (4). In these figures, (16) is a screw for fixing the diffusion plate (3).
これら図5(a)〜図5(c)の態様においては、拡散板(3)、摘み(12)、心棒(13)およびL字金具(14)は一体的に結合されている。したがって、摘み(12)を面状光源(1)または照射対象物(S)に向かって引っ張ると、心棒(13)がスリット(11)に沿って移動し、これに伴って、拡散板(3)も面移動する。その際、拡散板(3)を固定するL字金型(14)は、ガイドレール(15)に懸架され、その上をスライドするので、上記拡散板(3)の面移動も円滑に進行する。このようにして、摘み(12)を面状光源(1)または照射対象物(S)に向かって引っ張ることにより、離間距離(L)は連続的に減少または増加するので、ワークディスタンス(D)の変化に対して高精度の対応が実現される。 5 (a) to 5 (c), the diffusion plate (3), the knob (12), the mandrel (13) and the L-shaped metal fitting (14) are integrally coupled. Therefore, when the knob (12) is pulled toward the planar light source (1) or the irradiation object (S), the mandrel (13) moves along the slit (11), and accordingly, the diffusion plate (3 ) Also move. At this time, since the L-shaped mold (14) for fixing the diffusion plate (3) is suspended on the guide rail (15) and slides on the guide rail (15), the surface movement of the diffusion plate (3) proceeds smoothly. . In this way, by pulling the knob (12) toward the planar light source (1) or the irradiation object (S), the separation distance (L) continuously decreases or increases, so that the work distance (D) High-accuracy response to changes is realized.
次に、拡散板(3)の交換方法について、図5(a)を参照しながら述べる。拡散板(3)を別の拡散板に交換するには、先ず、横板(4b)外側の2箇所の摘み(12)を反時計方向に回して心棒(13)から外す。つぎに、クリップ部材(10a)および(10b)をはずし、筐体(4)の上面にある開閉式上蓋(4d)を開けた状態で、心棒(13)をスリット(11)からはずしてから、L字金具(14)と一体的に結合された拡散板(3)を筐体(4)の上方に引き上げて外部に取り出す。その後、L字金具(14)と一体的に結合された別の拡散板と交換し、これまでと逆の順序で、別の拡散板を筐体(4)内に配設する。この際、離間距離(L)を調整する必要があれば、既に述べた手順にて、調整すればよい。 Next, a method for replacing the diffusion plate (3) will be described with reference to FIG. In order to replace the diffuser plate (3) with another diffuser plate, first, the two tabs (12) outside the horizontal plate (4b) are turned counterclockwise to be removed from the mandrel (13). Next, the clip members (10a) and (10b) are removed, and the mandrel (13) is removed from the slit (11) with the openable top cover (4d) on the top surface of the housing (4) opened. The diffuser plate (3) integrally coupled with the L-shaped metal fitting (14) is pulled up above the housing (4) and taken out to the outside. Thereafter, the diffuser plate is replaced with another diffuser plate integrally coupled with the L-shaped metal fitting (14), and the other diffuser plate is disposed in the housing (4) in the reverse order. At this time, if it is necessary to adjust the separation distance (L), it may be adjusted by the procedure described above.
図5(a)〜(c)の態様は種々の変形に発展する。スライド式の拡散板(3)を二組以上組み込めば、図1の態様同様、二枚以上の拡散板併用の形になる。また、筐体(4)の照射対象物に面する空間には、位置固定された拡散板を設け、該拡散板と面状光源との間にスライド式の拡散板(3)を配置するのも有用である。この場合の拡散板の位置固定に際しては、図1に示した溝方式を採用してもよい。さらに、面状光源(1)の取付基板(2)をも固定方式からスライド方式に変形すると、離間距離(L)の調整の自由度は格段に向上する。 The modes of FIGS. 5A to 5C develop into various modifications. If two or more sets of the slide type diffusion plates (3) are incorporated, the two or more diffusion plates can be used together, as in the embodiment of FIG. Further, a diffusion plate whose position is fixed is provided in a space facing the irradiation object of the housing (4), and a slide type diffusion plate (3) is disposed between the diffusion plate and the planar light source. Is also useful. In fixing the position of the diffusion plate in this case, the groove method shown in FIG. 1 may be adopted. Furthermore, if the mounting substrate (2) of the planar light source (1) is also deformed from the fixed method to the slide method, the degree of freedom in adjusting the separation distance (L) is significantly improved.
本発明の照射ヘッドは、ワークディスタンスの変化に対しても、光量が低下することなく均一な照射効果を奏するので、画像処理照明用以外の商品展示用、屋内照明用あるいは医療用の用途にも適用される。 Since the irradiation head of the present invention has a uniform irradiation effect without reducing the amount of light even when the work distance changes, it can be used for product display other than image processing illumination, indoor illumination, or medical use. Applied.
1 面状光源
2 面状光源(1)の取付基板
3 拡散板
4 筐体
4a 底板
4b 横板
4c 側面板
4d スライド板
5 基板(2)の取付溝
6a〜6d 拡散板(3)の嵌入溝
7 スライド溝
8 ボールプランジャー
9 蝶番
10 クリップ
11 スリット
12 ネジロック(ストッパー)付き摘み
13 心棒
14 L字金型
15 ガイドレール
S 照射対象物
D ワークディスタンス
L 離間距離
DESCRIPTION OF SYMBOLS 1 Surface light source 2
8
Claims (2)
In an irradiation head mainly composed of a casing having a planar light source and a diffuser plate facing the light source at a predetermined separation distance, the diffusion is performed in the casing according to the irradiation distance from the light source to the irradiation object. An irradiation head characterized in that, by providing a double mechanism capable of adjusting the distance between the plates and detachably fixing the plates , illuminance maintenance and uniform irradiation can be secured at the same time .
The mechanism is a mechanism in which grooves for fitting the end portions of the three sides of the diffusion plate are formed in multiple stages on the inner wall surface of the housing, and the diffusion plate can be freely inserted and removed through one side surface of the housing. The irradiation head according to claim 1.
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CN110375212A (en) * | 2013-03-27 | 2019-10-25 | Oled工厂有限责任公司 | Reequip Organic Light Emitting Diode (OLED) light source |
JP2014202479A (en) * | 2013-04-01 | 2014-10-27 | 東レエンジニアリング株式会社 | Film thickness irregularity inspection device |
KR101545689B1 (en) * | 2014-01-02 | 2015-08-19 | (주)유양디앤유 | LED Lighting Apparatus |
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JPH1145062A (en) * | 1997-07-29 | 1999-02-16 | Yuuho:Kk | Display device |
JP2000221503A (en) * | 1999-02-01 | 2000-08-11 | Stanley Electric Co Ltd | Surface light source device and liquid crystal display device |
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