TW201132893A - Lighting device - Google Patents

Lighting device Download PDF

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Publication number
TW201132893A
TW201132893A TW099137780A TW99137780A TW201132893A TW 201132893 A TW201132893 A TW 201132893A TW 099137780 A TW099137780 A TW 099137780A TW 99137780 A TW99137780 A TW 99137780A TW 201132893 A TW201132893 A TW 201132893A
Authority
TW
Taiwan
Prior art keywords
light
light distribution
irradiation device
irradiated
ridge line
Prior art date
Application number
TW099137780A
Other languages
Chinese (zh)
Inventor
Yasuo Kogure
Kazutaka Shito
Original Assignee
Hoya Candeo Optronics Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hoya Candeo Optronics Corp filed Critical Hoya Candeo Optronics Corp
Publication of TW201132893A publication Critical patent/TW201132893A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F21S2/005—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/008—Combination of two or more successive refractors along an optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F21V5/043—Refractors for light sources of lens shape the lens having cylindrical faces, e.g. rod lenses, toric lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Abstract

The present invention provides a lighting device overcoming a problem of non-uniform distribution of intensity of illumination irradiated from a number of illumination elements. The invented lighting device (1) includes a support table (3), a number of illumination elements (4a), means of controlling illumination (5), and means of distributing illumination (9). Furthermore, said means of controlling illumination (5) is installed in front of the illumination direction of illumination elements (4a) for controlling the direction of advancement of light rays irradiated from the illumination elements (4a). Said means of distributing illumination (9) is installed in front of the illumination direction of said means of controlling illumination (5) for refracting light rays irradiated from the illumination elements (4a) to a number of directions. Furthermore, said means of distributing illumination (9) includes a number of protrusions (17) arranged in a number of rows where a first prism direction (p) a second prism direction (q) are formed through the protrusions (17). The first prism direction (p) and the second prism direction (q) are, under the situation without using said means of distributing illumination, extended from a darkest spot on the illuminated article and a direction perpendicularly intersected with a direction (w1,w2) of an illumination element (4a) closest to the darkest spot.

Description

201132893 六、發明說明： 【發明所屬之技術領域] 本發明係有關將複數之發光元件面狀地配置於支持台 ，照射光線之光照射裝置。 【先前技術】 以往’作爲光照射裝置之一具體例，例如可舉出紫外 線照射裝置。其紫外線照射裝置係適用作爲半導體，液晶 基板等之曝光’或不只檢查，使用於黏接透鏡或揚聲器之 聲音線圈等之電子構件時，爲了使紫外線硬化樹脂硬化的 裝置。 一般’作爲紫外線照射裝置的光源，係使用發光二極 體（LED )或半導體雷射（LD)。發光二極體係比較於放 電燈’具有消耗電力少，壽命長，元件本身的尺寸小等之 優點’多使用於聚光性照射的用途。近年來將複數的發光 Z極體配置成2維，即面狀，亦作爲照射面狀的光之光源 加以使用（例如，參照專利文獻1 )。 接著’參照圖27 ( a )及27 ( b )，對於以往的光照射 @置加以說明。圖27 ( a )係說明照射於被照射物的光線 β強度分布的說明圖，縱軸係顯示照射強度，橫軸係顯示 被照射物之位置。圖27 ( b )係顯示以往的光照射裝置之 要部的模式圖。 如圖27 ( b )所示，光照射裝置201係具有4個之發光 二極體202，和4個之透鏡203。4個之發光二極體202係隔BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light irradiation device that illuminates light by arranging a plurality of light-emitting elements in a planar manner on a support table. [Prior Art] Conventionally, as a specific example of the light irradiation device, for example, an ultraviolet irradiation device can be mentioned. The ultraviolet irradiation device is used as a device for curing an ultraviolet curable resin when used as an electronic component such as a film or a sound coil of a speaker, which is used for exposure of a semiconductor or a liquid crystal substrate. Generally, as a light source of an ultraviolet irradiation device, a light emitting diode (LED) or a semiconductor laser (LD) is used. The light-emitting diode system has a advantage in that the discharge lamp has less power consumption, a longer life, and a smaller size of the element itself, and is often used for concentrating illumination. In the past, a plurality of light-emitting Z-poles have been arranged in a two-dimensional, planar shape, and have been used as a light source for irradiating a planar light (for example, see Patent Document 1). Next, the conventional light irradiation @ will be described with reference to Figs. 27(a) and 27(b). Fig. 27 (a) is an explanatory view for explaining the intensity distribution of the light ray irradiated onto the object to be irradiated, wherein the vertical axis indicates the irradiation intensity, and the horizontal axis indicates the position of the object to be irradiated. Fig. 27 (b) is a schematic view showing a main part of a conventional light irradiation device. As shown in Fig. 27 (b), the light irradiation device 201 has four light-emitting diodes 202 and four lenses 203. Four light-emitting diodes 202 are separated.

S -5- 201132893 開一定的間隔而配列成一列。對於其發光二極體202之照 射方向的前方係配置透鏡203。 並且，從4個之發光二極體202所照射的光線L係各發 光元件加以放射狀地射出至中心。即，發光二極體202所 照射的光線L係擴散光。因此，發光二極體2 02，和被照射 物G的距離WD變長時，照射強度變弱，成爲無法得到必要 的照射強度。並且，在以往的光照射裝置201中，於發光 二極體202的照射方向之前方配置透鏡203，使光線L折射 控制光的擴散程度。 如圖2 7 ( a )的實線所示，從其光照射裝置20 1照射至 被照射物G之光的強度分布係形成4個之凸形的分布。其4 個之峰値的間隔係成爲與發光二極體之間隔的長度相同。 並且，產生有光無法充分加以照射的部份，而照射強度最 強部分，和最弱部分的差變大。其結果，將其以往的光照 射裝置20 1使用於紫外線照射裝置之情況，於紫外線硬化 樹脂之硬化或半導體，液晶基板等之曝光產生不勻，而具 有耗費爲了將紫外線硬化樹脂硬化的時間，以及產生在檢 查中遺漏不良情況之問題。 另外，對於記載於專利文獻1之光照射裝置，係爲了 謀求強度分布之均一化，提案有設置使光擴散之擴散板於 透鏡的出射方向之前方的技術。圖27(a)所示的點線及 一點虛線係顯示照射於設置擴散板時之被照射物G的光之 照射強度分布。如圖27 (a)所示，經由將從透鏡2 03所出 射的光，根據擴散板加以擴散之時，改善照射強度的分布 -6 - 201132893 。在此，點線係顯示使用擴散率高的擴散板時之照射強度 的分布，一點虛線係顯示使用擴散率低的擴散板時之照射 強度的分布。 [以往技術文獻] [專利文獻] [專利文獻1]日本特開201 0-27252號公報。 【發明內容】 欲解決發明之課題 但在專利文獻1所記載的技術中，爲了減輕照射強度 的差而需要加強擴散光線，但接觸於被照射物G之光的範 圍則擴大爲所需範圍以上。如由圖27 ( a )的點線所示， 從配置於外側的發光元件所照射的光係超過使用者所要求 的照射區域Η而加以擴散，成爲無法效率佳地照射至照射 區域Η內。因此，有著在液晶基板等之曝光或黏接電子構 件時，光線則被照射至使用者所未要求之處的問題。 另外，爲了降低超過照射區域Η而加以擴散的光，使 用擴散率低的擴散板而減弱擴散強度時，超過照射區域Η 而加以擴散的光係減輕。但，如圖27 ( a )之一點虛線所示 ，有著無法改善照射強度之分布的問題。 本發明之目的係提供考慮前述的問題點’對於特定之 照射區域而言，效率佳地照射光線’可改善照射光的強度 分布之不勻的光照射裝置。 201132893 爲了解決課題之手段 爲了解決前述課題，達成本發明之目的，本發明之光 照射裝置係具備：具有對向於被照射物之載置部的支持台 ，和搭載於支持台之載置部的複數之發光元件。另外，具 備：配置於複數之發光元件的照射方向之前方，控制複數 之發光元件之照射光的行進方向的光控制手段，和配置於 光控制手段之照射方向的前方，折射複數之發光元件之照 射光而配光於複數之方向的配光手段。並且，配光手段係 具有排列於複數的列之複數之凸部，形成經由複數之凸部 而延伸存在於相互不同之方向的複數之稜線。另外，複數 之稜線的方向係於未使用配光手段之情況，延伸存在於與 連結在被照射物成爲最暗部之處，與從最暗部最近的發光 元件的線垂直交叉的方向。 發明的效果 如根據本發明之光照射裝置，設置有折射照射光而配 光於其光的複數之方向的配光手段。並且，將形成於其配 光手段之複數之稜線的方向，與於未使用配光手段之情況 ，連結在被照射物成爲最暗部之處，與從最暗部最近的發 光元件的線垂直交叉β因此’經由配光手段，呈於未使用 配光手段之情況’增補成爲最暗部之範圍，由未浪費擴散 光線地進行配光者’可消除未照射光線之範圍。其結果， 對於被照射物之特定照射區域而言可效率佳地照射光線， -8- 201132893 進而改善照射光的強度分布之不勻。 【實施方式】 以下’對於本發明之光照射裝置之實施形態例，參照 圖1〜圖26加以說明。然而，在各圖中，對於共通的構件， 附上同一符號。另外，本發明係並未限定於以下的形態。 然而，說明係以下的順序進行 1、 第1實施形態例 1 -1、光照射裝置之構成例 1-2、光照射裝置之動作 2、 第2實施形態例 3、 第3實施形態例 4、 第4實施形態例 5、 凸部之變形例 6、 發光元件之配列的變形例 < 1、第1實施形態例> 1 · 1、光照射裝置之構成例 首先，參照圖1〜圖15，對於有關本發明之第1實施形 態例（以下，稱作「本例」）之光照射裝置加以說明。 本例之紫外線照射裝置1係將紫外線發光二極體（U V L E D )作爲光源而照射紫外線的構成。紫外線照射裝置1 係例如’使用於半導體或液晶的基板等之曝光，或爲了照 射紫外線於紫外線硬化樹脂而使其硬化。 £ -9- 201132893 圖1係紫外線照射裝置1之正面圖，圖2係紫外線照射 裝置1之剖面圖。 如圖1及圖2所示，紫外線照射裝置1係具有：框體2, 和支持台3’和光源之複數之發光二極體4，和透鏡群5, 和第1之配光薄片7及第2之配光薄片8所成之配光手段9， 和散熱器6，和未圖示之控制部。 框體2係形成爲中空的容器狀。另外，對於框體2之一 面’係形成有開口成略四角形狀的開口窗11。並且，對於 其框體2係收納有支持台3，發光二極體4，透鏡群5，散熱 器6及控制部。然而，在本例中，已說明過將開口窗11的 形狀形成爲略四角形狀的例，但並不限於此。即，開口窗 1 1係例如以略六角形或略圓形等其他各種形狀進行開口之 構成亦可。 支持台3係形成爲略平板狀，其一面係成爲搭載有發 光二極體4之載置部3a。其支持台3係安裝於散熱器6，收 納於框體2。並且，支持台3係在收納於框體2時，載置部 3 a則面對開口窗1 1，對於被照射物而言爲對向。另外’對 於支持台3之載置部3a，係搭載發光二極體4。然而，支持 台3係作爲基板而構成亦可。然而，於支持台3與散熱器6 之間’介入存在熱傳導率高之石墨薄片亦可。 圖3係顯示發光二極體之配置方法的斜視圖。 如圖3所示，發光二極體4係形成爲構成略四角形之晶 片狀。對於其發光二極體4之略中心，係設置有發光元件 4a。經由其發光元件43發光之時，照射光線。並且，發光 -10- 201132893 二極體4係藉由未圖示之配線而連接於控制部。 更且’其發光二極體4係照射3 65nm〜4〇5nm附近之波 長的光’即照射紫外線之構成。並且，從複數之發光二極 體4所照射之紫外線係全爲同一的波長。 另外’已說明過使用形成爲略四角形狀之發光二極體 4的例，但亦可使用略圓柱狀之發光二極體4。並且，發光 元件4a之發光面的形狀並不限定於略四角形，發光元件4a 之發光面的形狀係例如亦可形成爲略六角形或略圓形。 另外，發光二極體4係略等間隔地搭載於與載置部3a 構成平行之橫方向X，和與橫方向X垂直交叉的縱方向y。 並且，發光二極體4係於橫方向x排列6個，於縱方向y排列 6個，使用全體爲36個之發光二極體4。 更且，如上述所述，在相鄰於橫方向X之2個之發光二 極體4，4x的發光元件4a之第1之間隔Tx的長度和在相鄰於 縱方向y之2個之發光二極體4，4y的發光元件4a之第2之間 隔Ty的長度係設定成相同長度（參照圖6)。並且與支持 台3的一面平行，且在相鄰於從橫方向X及縱方向y傾斜約 45。的第1之斜方向wl的2個之發光二極體4，4wl之發光元 件4a之第3之間隔Twl的長度係設定爲較第1之間隔Tx及第2 之間隔Ty爲長（參照圖6)。 然而，在相鄰於垂直交叉於第1之斜方向％1的第2之斜 方向w2之2個之發光二極體4，4w2之發光元件4a之第4之間 隔Tw2的長度係設定爲與第3之間隔Twl相同長度。並且’ 在本例中，第1之斜方向wl與第2之斜方向w2則成爲在由 -11 - 201132893 相鄰之4個之發光二極體4所圍住時所形成之範圍的對角線 〇 更且，如圖2所示，發光二極體4係在搭載於支持台3 之載置部3a的狀態，收納於框體2。此時’發光二極體4之 發光元件4a係朝向於框體2之開口窗11之開口。因此’從 發光二極體4所照射的光係透過框體2之開口窗1 1所出射。 並且，3 6個之發光二極體4之光軸方向R係各設定成略平行 〇 然而，在本例中，已說明過使用36個之發光二極體4 的例，但並不限定於此，發光二極體4的數量係亦可使用2 個或3 7個以上，對應於所使用之用途而作各種設定。 另外，如圖2所示，對於其發光二極體4之照射方向的 前方，係設置有光控制手段之透鏡群5。透鏡群5係由第1 之透鏡12，和第2之透鏡13所構成。其第1之透鏡12及第2 之透鏡13係各爲凸透鏡。 並且，第1之透鏡12係於搭載於載置部3a之36個之發 光二極體4之照射方向的前方，各一個加以配置。即，設 置有36個之第1之透鏡12。另外，第2之透鏡13係於配置於 發光二極體4之照射方向前方之前方的第1之透鏡12之光出 射側，各一個加以配置。即，亦使用36個之其第2之透鏡 13 〇 圖5係對於從發光二極體4所照射之光線L之方向加以 說明之模式圖。然而，方便上，在圖5中，將第1之透鏡12 及第2之透鏡13作爲一個透鏡而圖示。 -12- 201132893 如其圖5所示，從發光二極體4所照射之光線係將發光 元件4a擴散成放射狀於中心的擴散光。因此，從紫外線照 射裝置1至被照射物G之距離WD的長度（參照圖8 )爲長之 情況，光則擴散，無法將必要的照射強度的光照射至被照 射物G之照射區域Η。因此，在本例中，經由透鏡群5，控 制，從發光二極體4所照射之光擴散程度，將光的行進方 向控制成特定的方向。由此，由光擴散而可防止照射強度 下降。 另外，圖2所示之第1之透鏡12係保持於第1之透鏡架 14而固定於框體2之開口窗11。對於其第1之透鏡架14，係 設置有從發光二極體4所照射之光線通過之貫通孔14a。另 外，第2之透鏡13係保持於第2之透鏡架I5’固定於在框體 2之開口窗11的第1之透鏡架14前方。對於其第2之透鏡架 1 5，係設置有從第1之透鏡1 2所射出之光線通過之貫通孔 1 5a ° 然而，在本例中，已說明過將透鏡群5’經由第1之透 鏡12及第2之透鏡13之2種類的透鏡而構成的例’但並不限 定於此。透鏡群5係亦可經由1種類的透鏡而構成’另外’ 亦可經由3種類以上的透鏡而構成。。 另外，已說明過作爲光控制手段而適用第1之透鏡12 及第2之透鏡1 3所成之透鏡群5的例’但並不限定於此。作 爲光控制手段，如爲控制從發光二極體的發光元件所照射 的光線之擴散，將光的行進方向控制成特定的方向之構成 ，可適用反射鏡等其他各種光學系統。S -5- 201132893 They are arranged in a row at a certain interval. A lens 203 is disposed in front of the illumination direction of the light-emitting diode 202. Further, the light beams L irradiated from the four light-emitting diodes 202 are radially emitted to the center of each of the light-emitting elements. That is, the light L emitted by the light-emitting diode 202 is diffused light. Therefore, when the distance WD between the light-emitting diodes 02 and the irradiated object G becomes long, the irradiation intensity becomes weak, and the necessary irradiation intensity cannot be obtained. Further, in the conventional light irradiation device 201, the lens 203 is disposed in front of the irradiation direction of the light-emitting diode 202, and the light L is refracted to control the degree of diffusion of light. As shown by the solid line in Fig. 27 (a), the intensity distribution of the light irradiated to the object G from the light irradiation device 20 1 forms a convex distribution of four. The interval between the four peaks is the same as the length of the interval between the light-emitting diodes. Further, a portion where light is not sufficiently irradiated is generated, and the difference between the most intense portion and the weakest portion becomes large. As a result, when the conventional light irradiation device 20 1 is used in an ultraviolet irradiation device, the ultraviolet curing resin is cured, the semiconductor, the liquid crystal substrate or the like is unevenly exposed, and the time for curing the ultraviolet curing resin is required. And the problem of missing omissions in the inspection. Further, in the light irradiation device described in Patent Document 1, in order to achieve uniformity of the intensity distribution, it is proposed to provide a diffusion plate for diffusing light in front of the emission direction of the lens. The dotted line and the one-dotted broken line shown in Fig. 27(a) show the irradiation intensity distribution of the light irradiated to the object G when the diffusing plate is provided. As shown in Fig. 27 (a), the distribution of the irradiation intensity is improved by the diffusion of the light emitted from the lens 203 according to the diffusion plate -6 - 201132893. Here, the dotted line shows the distribution of the irradiation intensity when a diffusing plate having a high diffusivity is used, and the dotted line shows the distribution of the irradiation intensity when a diffusing plate having a low diffusing rate is used. [PRIOR ART DOCUMENT] [Patent Document 1] [Patent Document 1] JP-A-201 0-27252. SUMMARY OF THE INVENTION In order to solve the problem of the invention, in the technique described in Patent Document 1, it is necessary to strengthen the diffused light in order to reduce the difference in the irradiation intensity, but the range of the light that is in contact with the irradiated object G is expanded to a desired range or more. . As shown by the dotted line in Fig. 27 (a), the light emitted from the light-emitting element disposed outside is diffused beyond the irradiation area required by the user, and is not efficiently irradiated into the irradiation region. Therefore, there is a problem that light is irradiated to a place not required by the user when the liquid crystal substrate or the like is exposed or bonded to the electronic component. Further, in order to reduce the light diffused beyond the irradiation region ,, and to reduce the diffusion intensity by using a diffusion plate having a low diffusivity, the light which is diffused beyond the irradiation region 减轻 is lightened. However, as shown by the dotted line in one of Fig. 27(a), there is a problem that the distribution of the irradiation intensity cannot be improved. SUMMARY OF THE INVENTION An object of the present invention is to provide a light-irradiating device which can improve the unevenness of the intensity distribution of the irradiated light by considering the above-mentioned problem, 'the light is irradiated with light efficiently for a specific irradiation region'. In order to solve the above problems, the light irradiation device of the present invention includes a support table having a mounting portion facing the object to be irradiated, and a mounting portion mounted on the support table. a plurality of light-emitting elements. Further, the present invention includes: a light control means disposed in front of an irradiation direction of a plurality of light-emitting elements, a light control means for controlling a traveling direction of the light of the plurality of light-emitting elements, and a light-emitting element disposed in front of the irradiation direction of the light control means to refract a plurality of light-emitting elements A light distribution means that illuminates light and distributes light in a plurality of directions. Further, the light distribution means has a plurality of convex portions arranged in a plurality of columns, and forms a plurality of ridge lines extending in mutually different directions via the plurality of convex portions. Further, the direction of the plurality of ridge lines is such that the light distribution means is not used, and the direction is perpendicular to the line connecting the light-emitting elements closest to the darkest portion where the object to be irradiated becomes the darkest portion. Advantageous Effects of Invention The light irradiation device according to the present invention is provided with a light distribution means that refracts the illumination light and distributes it in a plurality of directions of the light. Further, in the direction in which the ridge line of the plurality of light distribution means is formed, and in the case where the light distribution means is not used, the object to be irradiated is connected to the darkest portion, and the line of the light-emitting element closest to the darkest portion is perpendicularly intersected with the line β. Therefore, 'by the light distribution means, the case where the light distribution means is not used" is added to the range of the darkest portion, and the light distribution by the person who does not waste the diffused light 'can eliminate the range of the unilluminated light. As a result, it is possible to efficiently illuminate the specific irradiation region of the object to be irradiated, and -8-201132893 further improves the unevenness of the intensity distribution of the irradiation light. [Embodiment] Hereinafter, an embodiment of a light irradiation device according to the present invention will be described with reference to Figs. 1 to 26 . However, in the respective drawings, the same reference numerals are attached to the common members. Further, the present invention is not limited to the following aspects. However, the following description is given: the first embodiment, the first embodiment 1-1, the light irradiation device configuration example 1-2, the light irradiation device operation 2, the second embodiment example 3, and the third embodiment example 4. Fourth Embodiment Example 5, Modification of the convex portion 6, Modification of the arrangement of the light-emitting elements < 1. First embodiment> 1 1. Configuration example of the light irradiation device First, referring to Figs. 1 to 15 A light irradiation device according to a first embodiment of the present invention (hereinafter referred to as "this example") will be described. The ultraviolet irradiation device 1 of the present embodiment has a configuration in which an ultraviolet light emitting diode (U V L E D ) is used as a light source to irradiate ultraviolet rays. The ultraviolet irradiation device 1 is, for example, exposed to a substrate such as a semiconductor or a liquid crystal, or cured by irradiating ultraviolet rays with ultraviolet rays. £ -9- 201132893 Fig. 1 is a front view of the ultraviolet ray irradiation apparatus 1, and Fig. 2 is a sectional view of the ultraviolet ray irradiation apparatus 1. As shown in FIGS. 1 and 2, the ultraviolet irradiation device 1 includes a housing 2, a plurality of light-emitting diodes 4 supporting the stage 3' and the light source, and a lens group 5, and a first light distribution sheet 7 and The light distribution means 9 formed by the second light distribution sheet 8, and the heat sink 6, and a control unit (not shown). The frame 2 is formed in a hollow container shape. Further, an opening window 11 having a slightly quadrangular shape is formed in one of the faces of the casing 2. Further, the housing 2 is housed with a support table 3, a light-emitting diode 4, a lens group 5, a heat sink 6, and a control unit. However, in this example, the example in which the shape of the opening window 11 is formed into a substantially square shape has been described, but it is not limited thereto. In other words, the opening window 1 1 may be configured to be opened in other various shapes such as a hexagonal shape or a slightly circular shape. The support table 3 is formed in a substantially flat shape, and one side thereof is a mounting portion 3a on which the light-emitting diode 4 is mounted. The support table 3 is attached to the heat sink 6 and is housed in the casing 2. Further, when the support table 3 is housed in the casing 2, the placing portion 3a faces the opening window 1 and is opposed to the object to be irradiated. Further, the light-emitting diode 4 is mounted on the mounting portion 3a of the support table 3. However, the support table 3 may be configured as a substrate. However, it is also possible to intervene between the support table 3 and the heat sink 6 to have a graphite sheet having a high thermal conductivity. Fig. 3 is a perspective view showing a method of arranging a light-emitting diode. As shown in Fig. 3, the light-emitting diodes 4 are formed in a crystal shape which is formed into a substantially square shape. For the center of the light-emitting diode 4, a light-emitting element 4a is provided. When the light-emitting element 43 emits light, the light is irradiated. Further, the light emission -10- 201132893 diode 4 is connected to the control unit by wiring (not shown). Further, the light-emitting diode 4 is irradiated with ultraviolet light by irradiating light having a wavelength of around 3 65 nm to 4 〇 5 nm. Further, the ultraviolet rays irradiated from the plurality of light-emitting diodes 4 are all of the same wavelength. Further, an example in which the light-emitting diode 4 formed into a substantially square shape has been used has been described, but a light-emitting diode 4 having a substantially cylindrical shape may be used. Further, the shape of the light-emitting surface of the light-emitting element 4a is not limited to a substantially square shape, and the shape of the light-emitting surface of the light-emitting element 4a may be formed, for example, to be slightly hexagonal or slightly circular. Further, the light-emitting diodes 4 are mounted at a substantially equal interval in the lateral direction X parallel to the placing portion 3a and in the longitudinal direction y perpendicularly intersecting the lateral direction X. Further, the light-emitting diodes 4 are arranged in six in the lateral direction x, six in the vertical direction y, and 36 LEDs 4 in total. Further, as described above, the length of the first interval Tx of the light-emitting elements 4a adjacent to the two light-emitting diodes 4, 4x adjacent to the lateral direction X and the two adjacent to the longitudinal direction y The length of the second interval Ty of the light-emitting elements 4a of the light-emitting diodes 4, 4y is set to be the same length (see Fig. 6). It is parallel to the side of the support table 3 and is inclined by about 45 from the lateral direction X and the longitudinal direction y. The length of the third interval Tw1 of the two light-emitting diodes 4 in the first oblique direction w1 is set to be longer than the first interval Tx and the second interval Ty (see the figure). 6). However, the length of the fourth interval Tw2 of the light-emitting elements 4a of the two light-emitting diodes 4, 4w2 adjacent to the second oblique direction w2 perpendicularly intersecting the first oblique direction %1 is set to be The third interval Twl has the same length. Further, in this example, the first oblique direction w1 and the second oblique direction w2 are diagonals of a range formed by the four light-emitting diodes 4 adjacent to -11 - 201132893. As shown in FIG. 2, the light-emitting diode 4 is housed in the housing 2 in a state of being mounted on the mounting portion 3a of the support table 3. At this time, the light-emitting element 4a of the light-emitting diode 4 faces the opening of the opening window 11 of the casing 2. Therefore, the light irradiated from the light-emitting diode 4 is transmitted through the opening window 1 of the casing 2. Further, the optical axis directions R of the three light-emitting diodes 4 are set to be slightly parallel. However, in this example, an example in which 36 light-emitting diodes 4 are used has been described, but the invention is not limited thereto. Therefore, the number of the light-emitting diodes 4 can be two or three or more, and various settings can be made depending on the use used. Further, as shown in Fig. 2, a lens group 5 of a light control means is provided in front of the irradiation direction of the light-emitting diode 4. The lens group 5 is composed of a first lens 12 and a second lens 13. The first lens 12 and the second lens 13 are each a convex lens. Further, the first lens 12 is disposed in front of the irradiation direction of the 36 light-emitting diodes 4 mounted on the mounting portion 3a, and is disposed one by one. That is, 36 first lenses 12 are provided. Further, the second lens 13 is disposed on the light-emitting side of the first lens 12 disposed in front of the light-emitting diode 4 in the front side in the irradiation direction, and is disposed one by one. That is, 36 of the second lenses 13 are also used. Fig. 5 is a schematic view for explaining the direction of the light L emitted from the light-emitting diode 4. However, in convenience, in FIG. 5, the first lens 12 and the second lens 13 are illustrated as one lens. -12- 201132893 As shown in Fig. 5, the light emitted from the light-emitting diode 4 diffuses the light-emitting element 4a into a diffused light radially at the center. Therefore, the length (see Fig. 8) of the distance WD from the ultraviolet ray irradiation device 1 to the object G to be irradiated is long, and the light is diffused, and the light of the necessary irradiation intensity cannot be irradiated to the irradiation region 被 of the object G to be irradiated. Therefore, in this example, the lens group 5 is controlled to control the traveling direction of the light to a specific direction from the degree of light diffusion by the light-emitting diode 4. Thereby, the light intensity is diffused to prevent the irradiation intensity from decreasing. Further, the first lens 12 shown in Fig. 2 is held by the first lens holder 14 and fixed to the opening window 11 of the casing 2. The first lens holder 14 is provided with a through hole 14a through which light emitted from the light-emitting diode 4 passes. Further, the second lens 13 is held by the second lens holder I5' in front of the first lens holder 14 of the opening window 11 of the casing 2. In the second lens holder 15, the through hole 15a passing through the light emitted from the first lens 12 is provided. However, in this example, the lens group 5' has been described as passing through the first An example of the two types of lenses of the lens 12 and the second lens 13 is not limited thereto. The lens group 5 may be configured by one type of lens, or may be configured by three or more types of lenses. . Further, the example in which the lens group 5 formed by the first lens 12 and the second lens 13 is applied as the light control means has been described, but is not limited thereto. As a light control means, for controlling the diffusion of light emitted from the light-emitting element of the light-emitting diode, the traveling direction of the light is controlled to a specific direction, and various other optical systems such as a mirror can be applied.

S -13- 201132893 更且，由將發光二極體作爲砲彈型之led而構成者， 於發光二極體本身，賦予光控制手段亦可。如此’由將發 光二極體作爲砲彈型之led，可謀求透鏡群之構件數的削 減。 更且，對於在透鏡群5之光的出射方向的前方，係配 置有第1之配光薄片7，和第2之配光薄片8。第1之配光薄 片7和第2之配光薄片8係呈在層積的狀態關閉框體2之開口 地崁入於開口窗11。然而，對於在第1之配光薄片7及第2 之配光薄片8之框體2的固定方法係不限於崁合，經由黏接 或使用固定螺絲之其他各種之固定方法，固定於框體2亦 可。並且，第1之配光薄片7和第2之配光薄片8係構成配光 手段9。 圖4係顯示發光二極體4與第1之配光薄片7及第2之配 光薄片8之位置關係的斜視圖。然而，在圖4中，省略圖2 所示之透鏡群5。 如圖4所示，第1之配光薄片7及第2之配光薄片8係折 射從發光二極體4及透鏡群5所入射的光，將光的光軸方向 分成複數（在本例中爲2個），將光分配至被照射物G的棱 鏡薄片。然而，以下，將光的光軸方向分成複數，將光分 配至被照射物G之情況稱作「配光」。另外，第1之配光薄 片7及第2之配光薄片8係因各具有同一之構成之故，在此 係對於第1之配光薄片7加以說明。 對於第1之配光薄片7之一面，係形成有複數的凸部17 。凸部17係剖面形狀爲略三角形之突條。另外，凸部17之 -14- 201132893 剖面形狀係形成爲左右對秤。並且，其凸部丨7係具有2個 之斜面17a。其複數之凸部17係將其延伸存在的方向朝向 同一方向，平行地形成於第1之配光薄片7之一面上。因此 ，對於第1之配光薄片7之一面，係複數之凸部1 7則排列於 複數的列而加以配置。 作爲其第1之配光薄片7及第2之配光薄片8係透明，透 過紫外光之材質爲佳，例如可適用於有機樹脂，有機-無 機複合體，石英玻璃，或多成分系玻璃，此等玻璃上，以 有機樹脂，或有機-無機複合體形成棱鏡或透鏡之構成。 另外，第1之配光薄片7係將形成有複數之凸部17的面 與相反側的面，對向於發光二極體4及透鏡群5而加以配置 。另外，第2之配光薄片8係將形成有複數之凸部17的面與 相反側的面，對向於第1之配光薄片7。 更且，第1之配光薄片7係將經由複數之凸部1 7所形成 之第1之稜線方向P，對於載置於載置部3a之發光二極體4 的橫方向X及縱方向y而言，傾斜略45°加以配置。即，第1 之配光薄片7之第1之稜線方向p係與在相鄰之2個之發光二 極體4的發光元件4a之第1〜第4之間隔Tx~Tw2之中其距離 最長之第3之間隔Twl或第4之間隔Tw2之方向垂直交叉。 在本例中，第1之稜線方向p係與第1之斜方向wl垂直交叉 〇 另外，第2之配光薄片8係將經由複數之凸部17所形成 之第2之稜線方向q，對於第1之稜線方向P而言’旋轉略90 。於光軸外圍而加以配置。因此’第1之稜線方向p與第2之 -15- 201132893 稜線方向q係垂直交叉。即，第2之稜線方向q係與第2之斜 方向w2垂直交叉。 並且，第1之配光薄片7係對於被照射物G而言，沿著 與第1之稜線方向p垂直交叉之方向，將光線配光，第2之 配光薄片8係對於被照射物g而言，沿著與第2之稜線方向q 蓄光之方向，將光線配光之構成。 1-2、光照射裝置之動作 接著，參照圖5〜圖7，對於光照射裝置1之動作加以說 明。 圖5係對於從發光二極體4所照射之光線L的方向加以 說明之模式圖，圖6係對於入射至凸部17之光線L之方向和 照射至被照射物之光線L加以說明之說明圖。然而，方便 上，在圖5中，省略透鏡群而加以圖示，在圖6(b)中， 重疊照射至被照射物之光的照射中心與發光元件4a之位置 關係而加以圖示。 如圖5所示，從發光二極體4之發光元件4a光線L係將 發光二極體4之發光元件4a作爲基點而出射成放射狀。即 ，從發光二極體4所照射的光係發散光。並且，其光線L係 通過光控制手段之透鏡群5時進行折射，控制其擴散程度 ，進而控制光線L之行進方向。 並且，控制行進方向之光線L係入射至第1之配光薄片 7。如圖6 ( a )所示，入射至第1之配光薄片7的光線L係經 由透過凸部1 7之時而以折射角度0 2進行折射。以下，將 -16- 201132893 其折射角度Θ2稱作配光角度02。其配光角度02係可經 由凸部17之頂角0 1，第1之配光薄片7及第2之配光薄片8 的折射率而進行變更。在此，對於凸部17係具有2個之斜 面17a之故，光的光軸方向係分成2個方向。 如圖6 ( b )所示，從發光元件4a所照射的光係經由凸 部1 7而配光成2個，照射至被照射物G，分成第1之照射中 心K1與第2之照射中心K2之2個。此時，配光成2個之光的 照射中心ΚΙ，K2之位置係夾持發光元件4a而成爲第1之斜 方向wl上。另外，從第1之發光元件4 a所照射的光之照射 中心K 1係第3之間隔Tw 1之中心Ο至照射中心K 1之長度d， 和從第1之發光元件4a至照射中心K1之長度c則呈略相等地 加以設定。另外，從相鄰於第1之斜方向wl之第2之發光二 極體4w 1所照射的2個光之照射中心亦設定成相同。。 並且，呈成爲此條件地，凸部17之頂角0 1係對應於 從紫外線照射裝置1至被照射物G之距離WD之長度（參照 圖8 )加以調整。 在此，參照圖7及表1，對於凸部17之頂角0 1與配光 角度0 2之關係加以說明。 圖7及下記之表1係顯示凸部17之頂角0 1.與配光角度 02之關係的圖。然而，作爲構成第1之配光薄片7的材料 ，說明使用例如丙烯酸樹脂或環氧樹脂的例。並且，丙烯 酸樹脂之折射率爲1.49，環氧樹脂之折射率爲1.58。另外 ，光線L係經由光控制手段之透鏡群5而控制其擴散程度， 光的行進方向呈成爲相互略平行地加以控制。因此，在本 4 -17- 201132893 例中’光線L係將對於第1之配光薄片7之入射角作爲略0。 而考量。S-13-201132893 Further, a light-emitting diode is used as a bullet-type led, and a light control means may be provided to the light-emitting diode itself. Thus, by using a light-emitting diode as a bullet type, it is possible to reduce the number of components of the lens group. Further, the first light distribution sheet 7 and the second light distribution sheet 8 are arranged in front of the emission direction of the light of the lens group 5. The first light distribution sheet 7 and the second light distribution sheet 8 are inserted into the opening window 11 while closing the opening of the frame 2 in a stacked state. However, the fixing method of the frame 2 of the first light distribution sheet 7 and the second light distribution sheet 8 is not limited to twisting, and is fixed to the frame by adhesion or other various fixing methods using fixing screws. 2 can also. Further, the first light distribution sheet 7 and the second light distribution sheet 8 constitute the light distribution means 9. Fig. 4 is a perspective view showing the positional relationship between the light-emitting diode 4, the first light distribution sheet 7, and the second light distribution sheet 8. However, in Fig. 4, the lens group 5 shown in Fig. 2 is omitted. As shown in FIG. 4, the first light distribution sheet 7 and the second light distribution sheet 8 refract light incident from the light-emitting diode 4 and the lens group 5, and divide the optical axis direction of the light into plural numbers (in this example). In the middle, the light is distributed to the prism sheet of the object G to be irradiated. However, hereinafter, the case where the optical axis direction of light is divided into plural numbers and the light is distributed to the object G to be irradiated is referred to as "light distribution". Further, since the first light distribution sheet 7 and the second light distribution sheet 8 have the same configuration, the first light distribution sheet 7 will be described. A plurality of convex portions 17 are formed on one surface of the first light distribution sheet 7. The convex portion 17 has a slightly triangular shape in cross section. Further, the cross-sectional shape of the convex portion 17 from -14 to 201132893 is formed as a right and left pair scale. Further, the convex portion 7 has two inclined surfaces 17a. The plurality of convex portions 17 are formed in the same direction in the direction in which they extend, and are formed in parallel on one surface of the first light distribution sheet 7. Therefore, on one surface of the first light distribution sheet 7, a plurality of convex portions 17 are arranged in a plurality of rows and arranged. The first light distribution sheet 7 and the second light distribution sheet 8 are transparent, and a material that transmits ultraviolet light is preferable, and for example, it can be applied to an organic resin, an organic-inorganic composite, quartz glass, or a multi-component glass. On these glasses, a prism or a lens is formed by an organic resin or an organic-inorganic composite. Further, the first light distribution sheet 7 is disposed such that the surface on which the plurality of convex portions 17 are formed and the surface on the opposite side are aligned with the light-emitting diode 4 and the lens group 5. Further, the second light distribution sheet 8 is opposed to the first light distribution sheet 7 by the surface on which the plurality of convex portions 17 are formed and the surface on the opposite side. Further, the first light distribution sheet 7 is formed by the first ridge line direction P formed by the plurality of convex portions 17 in the lateral direction X and the longitudinal direction of the light-emitting diode 4 placed on the mounting portion 3a. For y, the tilt is slightly 45° to configure. In other words, the first ridge line direction p of the first light distribution sheet 7 is the longest among the first to fourth intervals Tx to Tw2 of the light-emitting elements 4a of the adjacent two light-emitting diodes 4a. The direction of the third interval Twl or the fourth interval Tw2 is perpendicularly intersected. In this example, the first ridge line direction p is perpendicularly intersected with the first oblique direction w1, and the second light distribution sheet 8 is formed by the second ridge line direction q formed by the plurality of convex portions 17. In the first ridge line direction P, the rotation is slightly 90. Configured on the periphery of the optical axis. Therefore, the first ridge line direction p intersects the second -15-201132893 ridge line direction q vertically. In other words, the second ridge line direction q intersects the second oblique direction w2 perpendicularly. Further, the first light distribution sheet 7 distributes light in a direction perpendicular to the first ridgeline direction p with respect to the object G, and the second light distribution sheet 8 is attached to the object g. In other words, light is distributed in a direction in which light is stored in the direction of the second ridge line q. 1-2. Operation of Light Irradiation Apparatus Next, the operation of the light irradiation apparatus 1 will be described with reference to Figs. 5 to 7 . 5 is a schematic view for explaining the direction of the light L irradiated from the light-emitting diode 4, and FIG. 6 is a description of the direction of the light L incident on the convex portion 17 and the light L irradiated to the object to be irradiated. Figure. However, in the case of Fig. 5, the lens group is omitted and shown in Fig. 5, and the positional relationship between the irradiation center of the light irradiated to the object to be irradiated and the light-emitting element 4a is shown in Fig. 6(b). As shown in Fig. 5, the light-emitting element 4a of the light-emitting diode 4 emits radiation from the light-emitting element 4a of the light-emitting diode 4 as a base point. That is, the light radiated from the light-emitting diode 4 diverges light. Further, when the light L is refracted by the lens group 5 of the light control means, the degree of diffusion is controlled, and the traveling direction of the light L is controlled. Further, the light ray L that controls the traveling direction is incident on the first light distribution sheet 7. As shown in Fig. 6 (a), the light ray L incident on the first light distribution sheet 7 is refracted at a refraction angle of 0 2 as it passes through the convex portion 17. Hereinafter, the refractive angle Θ2 of -16-201132893 is referred to as a light distribution angle 02. The light distribution angle 02 can be changed by the refractive index of the apex angle 0 1, the first light distribution sheet 7 and the second light distribution sheet 8 of the convex portion 17. Here, since the convex portion 17 has two inclined surfaces 17a, the optical axis direction of the light is divided into two directions. As shown in Fig. 6 (b), the light emitted from the light-emitting element 4a is distributed into two by the convex portion 17 and irradiated to the object G to be irradiated, and is divided into the first irradiation center K1 and the second irradiation center. 2 of K2. At this time, the center of the irradiation of the two light beams is distributed, and the position of K2 is sandwiched by the light-emitting element 4a to be in the first oblique direction w1. Further, the irradiation center K 1 of the light irradiated from the first light-emitting element 4 a is the center d of the third interval Tw 1 to the length d of the irradiation center K 1 , and the first light-emitting element 4a to the irradiation center K1 The length c is set to be slightly equal. Further, the irradiation centers of the two lights irradiated from the second light-emitting diodes 4w 1 adjacent to the first oblique direction w1 are also set to be the same. . Further, in this condition, the vertex angle 0 1 of the convex portion 17 is adjusted in accordance with the length (see Fig. 8) of the distance WD from the ultraviolet irradiation device 1 to the object G to be irradiated. Here, the relationship between the vertex angle 0 1 of the convex portion 17 and the light distribution angle 0 2 will be described with reference to Figs. 7 and 1 . Fig. 7 and the following Table 1 show the relationship between the apex angle 0 of the convex portion 17 and the light distribution angle 02. However, as a material constituting the first light distribution sheet 7, an example of using an acrylic resin or an epoxy resin will be described. Further, the refractive index of the acrylic resin was 1.49, and the refractive index of the epoxy resin was 1.58. Further, the light ray L is controlled by the lens group 5 of the light control means to control the degree of diffusion, and the traveling direction of the light is controlled to be slightly parallel to each other. Therefore, in the example of the present invention, the light ray L is set to be slightly zero for the incident angle of the first light distribution sheet 7. And consider.

【表U 凸部的頂角 Θ\ 配光角度β2 配光薄片的材質 丙烯酸樹脂 環氧樹脂 105 27.6 36.6 110 23.7 30.0 115 20.7 25.6 120 18.2 22.2 125 16.0 19.3 130 14.0 16.9 135 12.3 14.7 140 10.6 12.7 145 9.1 10.9 150 7.7 9.1 155 6.3 7.5 t60 5.0 5.9 165 3.7 4.4 170 2.5 2.9 175 1.2 1.5 如表1及圖7所示，配光角度0 2係凸部17之頂角β 1變 大時’了解到其角度變小。即，經由變更凸部17之頂角0 1之時’了解到配光角度02產生變化。 並且，其凸部17之頂角0 1係經由紫外線照射裝置1至 被照射物G之距離WD之長度（參照圖8 )加以設定。例如 ，距離WD爲長之情況，爲了抑制光的擴散而作爲加大頂 角01之角度，減少配光角度02爲佳。另外，距離WD爲 短之情況，因在短距離需要擴散光之故，需要減小凸部17 之頂角01角度而增加配光角度02。由此，可將從發光元 件4 a所照射的光照射至特定之照射區域Η內。 然而，入射至第2之配光薄片8的光亦與第1之配光薄 -18- 201132893 片7同樣之故，省略其說明。在第2之配光薄片8中，在被 照射物上，沿著第2之斜方向W2而配光成2個。 接著’參照圖8〜圖1 5，對於經由本例之紫外線照射裝 置1而投影至被照射物之光像加以說明。 圖8 (a)係顯示照射至被照射物g的光之強度分布， 圖8 ( b )係顯示從紫外線照射裝置i所照射之光線l的方向 之模式圖。然而，在圖8(b)中，將紫外線照射裝置1剖 面於第1之斜方向wl，且方便上省略第2之配光薄片8。 如圖8 ( b )所示，從發光元件4a所照射的光線L係透 過光控制手段之透鏡群5及配光手段9之第1之配光薄片7而 照射至相距距離WD之被照射物G。 圖9係顯示未使用配光手段而從透鏡群5照射至被照射 物G的光像之平面圖。圖1〇係顯示透過第丨之配光薄片7而 照射至被照射物G的光像，圖1 1係顯示透過配光手段9而照 射至被照射物G的光像。然而，重疊照射至被照射物的光 之照射中心與發光元件4a之位置關係而圖示。 如圖9所示，未透過配光手段而照射至被照射物G的光 之照射中心K係位置於發光元件4a上。並且，光接觸的範 圍（以下，稱作「光像」）Μ係將照射中心K略圓形地形 成於中心。 對此，如圖10所示，透過第1之配光薄片7的光之照射 中心係經由第1之配光薄片7而分成第1之照射中心Κ1與第2 之照射中心Κ2 之2個。並且，第1之照射中心Κ 1與第2之 照射中心Κ2係將發光元件4a夾持其間而位置於第1之斜方 £ -19- 201132893 向wl。另外，對於被照射物G係投影將第丨之照射中心ΚΙ 作爲中心的略圓形之第1之光像m 1，與將第2之照射中心 K2作爲中心的略圓形之第2之光像m2。第1之光像ml與第2 之光像m2係沿著第1之斜方向wl而相鄰^ 另外，圖11所示，透過第1之配光薄片7與第2之配光 薄片8的光之照射中心係分成第1之照射中心K 1，第2之照 射中心K2，第3之照射中心K3及第4之照射中心K4之4個。 第1之照射中心K 1與第2之照射中心K2係與圖1 0相同之故 而省略其說明。第3之照射中心K3與第4之照射中心K4係 將發光元件4a夾持其間而位置於第2之斜方向w2上。 另外，對於被照射物G係不只第1之光像ml及第2之光 像m2，而投影有將第3之照射中心K3作爲中心的略圓形之 第3之光像m3，與將第4之照射中心K4作爲中心的略圓形 之第4之光像m4。第3之光像m3與第4之光像m4係沿著第2 之斜方向w2而相鄰。並且，從1個之發光元件4a所照射之 光像Μ係成爲配合第1之光像ml，第2之光像m2，第3之光 像m3及第4之光像m4之構成》 圖12係顯示爲了與本例之紫外線照射裝置1做比較之 光照射裝置的發光二極體與配光薄片之配置的一例之斜視 圖。在本圖中，省略顯示在圖2所示之透鏡群5。另外，圖 1 3係顯示從圖1 2所示之光照射裝置的1個之發光元件所照 射的光像之說明圖，圖1 4係顯示經由圖1 2所示之光照射裝 置而投影至被照射物的光像之說明圖。 然而，發光二極體104，第1之配光薄片107及第2之配 -20- 201132893 光薄片108的構成係與有關本例之紫外線照射裝置1之發光 二極體4與第1之配光薄片7及第2之配光薄片8相同之故， 省略其說明。另外，搭載於載置部之發光二極體104之配 列方式亦與本例之紫外線照射裝置1相同。 首先，如圖12所示，光照射裝置101之第1之配光薄片 107係將第1之稜線方向P，呈成爲與載置於載置部之複數 之發光二極體104之橫方向X的列平行地加以配置。另外， 第2之配光薄片108係將第2之稜線方向q，呈成爲與發光二 極體1 04之縱方向y的列平行地加以配置。 如圖13所示，從光照射裝置101之1個之發光元件l〇4a 所照射的光係經由第1之配光薄片107及第2之配光薄片108 ，與橫方向X和縱方向y平行地配光成4個。並且，第1之光 像nl與第2之光像n2係將發光元件104a夾持於其間沿著縱 方向y相鄰，而第3之光像n3與第4之光像n4係將發光元件 1 〇4a夾持於其間沿著橫方向X相鄰。並且，在光照射裝置 101中，組合第1之光像nl，第2之光像n2，第3之光像n3及 第4之光像ιι4之構成則成爲從1個之發光元件l〇4a所照射的 光之光像N。 並且，如圖14所示，對於被照射物G係配合複數之發 光元件l〇4a之光像N，投影全體光像NA。在此’光照射裝 置1 〇 1亦與本例之紫外線照射裝置1同樣地，相鄰之2個之 發光二極體1〇4之間隔係第1之間隔Tx與第2之間隔Ty則設 定較第3之間隔Twl與第4之間隔Tw2爲短。 並且，在光照射裝置1〇1中，位置於對角線之發光二 -21 - 201132893 極體104，即於相鄰於2個之斜方向wl，w2之發光二極體 104之間產生有未照射到光的範圍S。然而，由相鄰之4個 之發光二極體所圍住之範圍的對角線中心係未使用配 光手段之情況，亦同樣地成爲未照射到光的範圍，成爲照 射強度最弱之最暗部。 圖1 5係顯示經由本例之紫外線照射裝置1而投影至被 照射物G的光像之說明圖。然而，重疊光像與發光元件4a 之位置關係而圖示。 如圖1 5所示，對於被照射物G，係組合複數圖1 1所示 之光像Μ而投影全體光像MA。 如上述，配光手段9之2個稜線方向p，q係於未使用配 光手段之情況，呈與連結成爲最暗部的部分與最近之發光 元件4a的線之第1之斜方向wl及第2之斜方向w2垂直交叉地 加以設定。因此，光像Μ係經由第1之配光薄片7，沿著與 第1之稜線方向Ρ垂直交叉的第1之斜方向wl加以2個之配光 ，而經由第2之配光薄片8，沿著與第2之稜線方向q垂直交 叉的第2之斜方向w2加以2個之配光。即，朝向於由相鄰之 4個之發光二極體4所圍住的範圍（在本例中爲正方形）之 對角線中心，將光線進行配光。 如此，呈補足於未使用配光手段情況而成爲最暗部之 範圍地，由將光線進行配光者，可消除未照射到光之範圍 。其結果，本例之紫外線照射裝置1則可減少較光照射裝 置1 〇 1照射強度弱之範圍，進而了解到可改善照射光之強 度分布的不勻。 -22- 201132893 另外，如圖8 ( a )及圖8 ( b )所示地，經由透鏡群5 而抑制光擴散的程度，且由將其光線，經由配光手段9而 配光者，可將照射強度的分佈，可明瞭分配在照射區域H 內。因此，未有從配置於外側之發光元件4a所照射的光超 出照射區域Η加以照射情況，而可明瞭地做成全體光像MA 之輪廓。 更且，由經由與被照射物G的距離WD而適宜設定凸部 17之頂角01之角度者，調整光的配光方向，調整照射中 心Κ的間隔。由此，可謀求在相鄰於斜方向之2個之發光二 極體4，4wl間之強度分布的均一化之同時，可將全體光像 MA收納於照射區域Η內。 < 2、第2實施形態例> 接著，參照圖16，對於適用於本發明之光照射裝置的 紫外線照射裝置之第2實施形態例加以說明。 圖1 6係顯示在第2實施形態之紫外線照射裝置之發光 二極體與配光薄片的斜視圖。然而，在圖16中，省略圖2 所示之透鏡群5。 有關其第2實施形態例之紫外線照射裝置2丨與有關第！ 實施形態例之紫外線照射裝置1之不同處，係以1片之配光 薄片而構成具有複數之棱線方向的配光手段的點。因此， 在此係對於配光薄片加以說明，對於與紫外線照射裝置1 共通之部分係附上同一的符號，省略重複說明。 如圖16所示’對於發光二極體4之照射方向之前方， 4 -23- 201132893 係配置一片之配光薄片23。對於構成配光手段25之配光薄 片23之一面，係形成有剖面形狀則由略三角形所成之突條 的複數之凸部24。並且，經由其複數之凸部2 4所形成之第 1之稜線方向p係呈與第1之斜方向wl垂直交叉地加以設定 。另外，對於配光薄片23之另一面，亦同樣地形成有凸部 24。由此，經由一片之配光薄片23，構成具有二方向之稜 線方向的配光手段25。 然而，經由設置於其另一面側之複數之凸部24所形成 之第2之稜線方向q係與第1之稜線方向垂直交叉。因此， 第2之棱線方向q係與第2之斜方向w2垂直交叉。 其他的構成係與有關上述之第1實施形態例之紫外線 照射裝置1同樣之故，省略其說明。經由具有如此構成之 紫外線照射裝置2 1，亦可得到與有關上述之第1實施形態 例之紫外線照射裝置1同樣的作用及效果。 < 3、第3實施形態例> 接著，參照圖17，對於適用於本發明之光照射裝置的 紫外線照射裝置之第3實施形態例加以說明。 圖17係顯示在第3實施形態之紫外線照射裝置之發光 二極體與配光薄片的斜視圖。然而，在本圖中，省略在圖 2所示之透鏡群5。 有關其第3實施形態例之紫外線照射裝置3〗係於1片之 配光薄片的一面，形成複數之棱線的構成◊因此，在此係 對於配光薄片加以說明，對於與紫外線照射裝置1共通之 -24- 201132893 部分係附上同一的符號，省略重複說明。 如圖17所示，對於發光二極體4之照射方向之前方’ 係配置一片之配光薄片33。對於與在其配光薄片33之發光 二極體4對向的面相反側的一面，係形成有略四角錐狀的 凸部34。凸部34係沿著配置於載置部3a之發光二極體4之 第1之斜方向w 1與第2之斜方向w2加以排列。因此，對於 配光薄片33之一面，形成有形成略四角錐狀的凸部34之4 個斜面p’、p”、q’、q”。並且，經由其配光薄片33而構成 配光手段35。 然而，在有關第3實施形態例之紫外線照射裝置3 1中 ，連結形成於配光薄片33之複數之凸部34的頂點的線，或 經由複數之凸部34所形成之谷部延伸存在的方向，作爲本 發明之稜線方向。 其他的構成係與有關上述之第1實施形態例之紫外線 照射裝置1同樣之故，省略此等說明。經由具有如此構成 之紫外線照射裝置31，亦可得到與有關上述之第1實施形 態例之紫外線照射裝置1同樣的作用及效果。 然而，如根據有關第2及第3實施形態例之紫外線照射 裝置2 1 ’ 3 1 ’可削減較有關第1實施形態例之紫外線照射 裝置1配光薄片的數量，進而可謀求裝置全體之構件數量 之削減。 < 4、第4實施形態例> 接著，參照圖18’對於適用於本發明之光照射裝置的 -25- 201132893 紫外線照射裝置之第4實施形態例加以說明。 圖18係顯不在有關第4實施形態例之紫外線照射裝置 之光線的折射與行進的圖。 有關第4實施形態例之紫外線照射裝置4 1與有關第1實 施形態例之紫外線照射裝置1不同處係爲凸部的形狀。因 此，在此係對於凸部加以說明，對於與紫外線照射裝置1 共通之部分係附上同一的符號，省略重複說明。 如圖1 8 ( a )所示，在紫外線照射裝置4 1之凸部42係 具有4個不同之傾斜角的斜面42a。因此，入射至其凸部42 之光線L係經由4個之斜面42a而配光至4方向。並且’如圖 1 8 ( b )所示，對於被照射物G，係照射具有沿著第1之斜 方向w 1所照射之第1之照射中心D 1，第2之照射中心D2， 第3之照射中心D3及第4之照射中心D4的光。 在此，將從第3之間隔Twl之中心Ο至發光二極體4之 發光元件4a的距離之中心，作爲基準點F。並且’第1之照 射中心D1，係位置於基準點F與發光元件4a之中間的地點 。另外，第2之照射中心D2，係位置於基準點F與中心〇之 中間的地點。然而，第3之照射中心D3及第4之照射中心 D4，係照射至沿著第1之斜方向wl，且將發光元件4a夾持 於其間，成爲與第1之照射中心D 1及第2之照射中心D2對 稱之位置。另外，從相鄰於第1之斜方向wl之第2之發光二 極體4wl所照射的光線L1亦設定成相同。 由此，更可提昇在相鄰之2個發光二極體4，4wl間的 照射強度之分布的均一化。其結果，更可提昇照射強度之 -26 - 201132893 不勻的改善。然而，對於第2之斜方向w2亦爲同樣之故， 省略其說明。 其他的構成係與有關上述之第1實施形態例之紫外線 照射裝置1同樣之故，省略此等說明。經由具有如此構成 之紫外線照射裝置41，亦可得到與有關上述之第1實施形 態例之紫外線照射裝置1同樣的作用及效果。 接著’參照圖19，圖20及圖21，對於有關第1實施形 態例之紫外線照射裝置1之照射強度的分布與有關第4實施 形態例之紫外線照射裝置4 1之照射強度的分布之不同加以 說明。 圖1 9係顯示未使用配光手段之以往的光照射裝置之照 射強度圖表。圖20係顯示經由有關第1實施形態例之紫外 線照射裝置1之一方向的配光手段之照射強度圖表，圖2 1 係顯示經由有關第4實施形態例之紫外線照射裝置4 1之一 方向的配光手段之照射強度圖表。然而，縱軸係顯示將以 往的光照射裝置之照射強度最強部分作爲1 . 〇〇之照射強度 的比例。另外，橫軸係顯示相鄰於第1之方向wl之2個發光 二極體4，4 w 1之間的位置。 更且，從第1之發光二極體4所照射的光之強度分布係 以圈顯示，而從相鄰之2個發光二極體4，4wl所照射的光 之強度分布係以四角顯示。並且，實線係顯示加上相鄰之 2個發光二極體4，4wl的光之實際的照射強度。 如圖19所示，在未使用配光手段之以往的光照射裝置 中，相鄰於第1之方向wl之2個發光二極體4’ 4wl的中心0[Table U The apex angle of the convex part 配 \ Light distribution angle β2 Material of the light distribution sheet Acrylic resin epoxy resin 105 27.6 36.6 110 23.7 30.0 115 20.7 25.6 120 18.2 22.2 125 16.0 19.3 130 14.0 16.9 135 12.3 14.7 140 10.6 12.7 145 9.1 10.9 150 7.7 9.1 155 6.3 7.5 t60 5.0 5.9 165 3.7 4.4 170 2.5 2.9 175 1.2 1.5 As shown in Table 1 and Figure 7, when the light distribution angle 0 2 is the apex angle β 1 of the convex portion 17 becomes larger, the angle is understood. Become smaller. That is, it is understood that the light distribution angle 02 changes by changing the apex angle θ of the convex portion 17 . Further, the apex angle θ of the convex portion 17 is set by the length (see Fig. 8) of the distance WD between the ultraviolet ray irradiation device 1 and the illuminating object G. For example, in the case where the distance WD is long, it is preferable to reduce the light distribution angle 02 as an angle of increasing the vertex angle 01 in order to suppress the diffusion of light. Further, in the case where the distance WD is short, since it is necessary to diffuse light at a short distance, it is necessary to reduce the angle of the vertex angle 01 of the convex portion 17 and increase the light distribution angle 02. Thereby, the light irradiated from the light-emitting element 4a can be irradiated into the specific irradiation area. However, the light incident on the second light distribution sheet 8 is also the same as that of the first light distribution sheet -18-201132893 sheet 7, and the description thereof will be omitted. In the second light distribution sheet 8, two light distributions are arranged along the second oblique direction W2 on the object to be irradiated. Next, a light image projected onto the object to be irradiated by the ultraviolet irradiation device 1 of the present embodiment will be described with reference to Figs. 8 to 15 . Fig. 8(a) shows the intensity distribution of light irradiated to the object to be irradiated g, and Fig. 8(b) is a schematic view showing the direction of the light ray 1 irradiated from the ultraviolet ray irradiation device i. However, in Fig. 8(b), the ultraviolet irradiation device 1 is cut in the first oblique direction w1, and the second light distribution sheet 8 is conveniently omitted. As shown in Fig. 8 (b), the light L emitted from the light-emitting element 4a is transmitted through the lens group 5 of the light control means and the first light distribution sheet 7 of the light distribution means 9 to be irradiated to the object to be irradiated by the distance WD. G. Fig. 9 is a plan view showing an optical image which is irradiated from the lens group 5 to the irradiated object G without using a light distribution means. Fig. 1 shows an optical image that is irradiated onto the object G through the light distribution sheet 7 of the second sheet, and Fig. 11 shows an optical image that is transmitted to the object G by the light distribution means 9. However, the positional relationship between the irradiation center of the light irradiated to the object to be irradiated and the light-emitting element 4a is illustrated. As shown in Fig. 9, the irradiation center K of the light that has not been transmitted through the light distribution means to the object G is placed on the light-emitting element 4a. Further, the range of the light contact (hereinafter referred to as "light image") is such that the irradiation center K is slightly circularly formed at the center. On the other hand, as shown in Fig. 10, the irradiation center of the light transmitted through the first light distribution sheet 7 is divided into two of the first irradiation center Κ1 and the second irradiation center Κ2 via the first light distribution sheet 7. Further, the first irradiation center Κ 1 and the second irradiation center Κ 2 sandwich the light-emitting element 4a therebetween and are positioned at the first oblique square -19 - 201132893 toward wl. In addition, the first light image m1 having a slightly circular shape centering on the irradiation center ΚΙ of the second object is projected, and the second light having a slightly circular shape centering on the second irradiation center K2 Like m2. The first light image ml and the second light image m2 are adjacent to each other in the first oblique direction w1, and the first light distribution sheet 7 and the second light distribution sheet 8 are transmitted as shown in FIG. The center of the light irradiation is divided into the first irradiation center K1, the second irradiation center K2, the third irradiation center K3, and the fourth irradiation center K4. The first irradiation center K 1 and the second irradiation center K2 are the same as those in Fig. 10, and the description thereof is omitted. The third irradiation center K3 and the fourth irradiation center K4 are placed between the light-emitting elements 4a and in the second oblique direction w2. In addition, in the object G to be irradiated, not only the first light image ml and the second light image m2 but also the third light image m3 having a slightly circular shape centering on the third irradiation center K3 is projected. The light-emitting center K4 of 4 is a light-shaped fourth light image m4 which is a center. The third light image m3 and the fourth light image m4 are adjacent to each other along the second oblique direction w2. Further, the light image emitted from one of the light-emitting elements 4a is configured to match the first light image ml, the second light image m2, the third light image m3, and the fourth light image m4. An oblique view showing an example of the arrangement of the light-emitting diodes and the light distribution sheets of the light irradiation device for comparison with the ultraviolet irradiation device 1 of the present embodiment. In the figure, the lens group 5 shown in Fig. 2 is omitted. In addition, FIG. 13 is an explanatory view showing an optical image irradiated from one light-emitting element of the light irradiation device shown in FIG. 12, and FIG. 14 is a view showing projection to the light irradiation device shown in FIG. An explanatory diagram of the light image of the object to be irradiated. However, the configuration of the light-emitting diode 104, the first light distribution sheet 107, and the second light distribution -20-201132893 light sheet 108 is the same as that of the light-emitting diode 4 of the ultraviolet irradiation device 1 of the present embodiment. The light sheet 7 and the second light distribution sheet 8 are the same, and the description thereof is omitted. The arrangement of the light-emitting diodes 104 mounted on the mounting portion is also the same as that of the ultraviolet irradiation device 1 of the present embodiment. First, as shown in FIG. 12, the first light distribution sheet 107 of the light irradiation device 101 has the first ridge line direction P and the horizontal direction X of the plurality of light-emitting diodes 104 placed on the mounting portion. The columns are configured in parallel. Further, the second light distribution sheet 108 is disposed such that the second ridge line direction q is parallel to the vertical direction y of the light emitting diode 104. As shown in FIG. 13, the light irradiated from one of the light-emitting elements 104a of the light irradiation device 101 passes through the first light distribution sheet 107 and the second light distribution sheet 108, and the horizontal direction X and the vertical direction y. The light is distributed in parallel to four. Further, the first light image n1 and the second light image n2 sandwich the light-emitting element 104a therebetween in the longitudinal direction y, and the third light image n3 and the fourth light image n4 are light-emitting elements. 1 〇 4a is sandwiched therebetween and adjacent to each other along the lateral direction X. Further, in the light irradiation device 101, the first light image n1, the second light image n2, the third light image n3, and the fourth light image ι4 are combined to form one light-emitting element 10a4a. The light of the illuminated light is like N. Further, as shown in Fig. 14, the light image N of the plurality of light-emitting elements 10a is integrated with the object G to be projected, and the entire light image NA is projected. In the same manner as the ultraviolet irradiation device 1 of the present embodiment, the interval between the adjacent two light-emitting diodes 1 and 4 is set to the first interval Tx and the second interval Ty. The interval Twl and the fourth interval Tw2 are shorter than the third. Further, in the light-irradiating device 1〇1, the polar body 104 is located at a diagonal line, that is, between the light-emitting diodes 104 adjacent to the two oblique directions w1 and w2. The range S of light is not irradiated. However, the diagonal center of the range surrounded by the four adjacent light-emitting diodes does not use the light distribution means, and similarly, the range of the light is not irradiated, and the irradiation intensity is the weakest. Dark part. Fig. 1 is an explanatory view showing an optical image projected onto the object G by the ultraviolet irradiation device 1 of the present embodiment. However, the positional relationship between the superimposed light image and the light-emitting element 4a is illustrated. As shown in Fig. 15, for the object G to be irradiated, the light image Μ shown in Fig. 11 is combined to project the entire light image MA. As described above, the two ridge directions p, q of the light distribution means 9 are the first oblique direction w1 and the first line connecting the portion which becomes the darkest portion and the nearest light-emitting element 4a when the light distribution means is not used. The oblique direction w2 of 2 is set to be vertically crossed. Therefore, the light image ray is distributed through the first light distribution sheet 7 along the first oblique direction w1 perpendicularly intersecting the first ridge line direction ,, and the second light distribution sheet 8 is used. Two light distributions are performed along the second oblique direction w2 that perpendicularly intersects the second ridgeline direction q. That is, the light is distributed toward the center of the diagonal of the range (square in this example) surrounded by the adjacent four light-emitting diodes 4. In this way, it is complementary to the range of the darkest portion without using the light distribution means, and the light is distributed to the light, and the range in which the light is not irradiated can be eliminated. As a result, the ultraviolet irradiation device 1 of the present embodiment can reduce the range in which the irradiation intensity of the light irradiation device 1 〇 1 is weak, and further understand that the unevenness of the intensity distribution of the irradiation light can be improved. -22-201132893 Further, as shown in FIG. 8(a) and FIG. 8(b), the degree of light diffusion is suppressed by the lens group 5, and the light is distributed through the light distribution means 9, The distribution of the irradiation intensity can be clearly distributed in the irradiation region H. Therefore, the light irradiated from the light-emitting element 4a disposed outside is not irradiated beyond the irradiation region, and the outline of the entire light image MA can be clearly understood. Further, by appropriately setting the angle of the apex angle 01 of the convex portion 17 via the distance WD from the object G to be irradiated, the light distribution direction of the light is adjusted, and the interval between the irradiation centers is adjusted. Thereby, it is possible to uniformize the intensity distribution between the two light-emitting diodes 4, 4wl adjacent to the oblique direction, and to house the entire light image MA in the irradiation region. <2. Second Embodiment Example> Next, a second embodiment of an ultraviolet irradiation device applied to the light irradiation device of the present invention will be described with reference to Fig. 16 . Fig. 16 is a perspective view showing a light-emitting diode and a light distribution sheet of the ultraviolet irradiation device of the second embodiment. However, in Fig. 16, the lens group 5 shown in Fig. 2 is omitted. The ultraviolet irradiation device 2 of the second embodiment is related to the first! In the difference of the ultraviolet irradiation device 1 of the embodiment, a light distribution sheet having a plurality of light distribution sheets is used to form a light distribution means having a plurality of ridge directions. Therefore, the light distribution sheet will be described here, and the same portions as those of the ultraviolet irradiation device 1 will be denoted by the same reference numerals, and the description thereof will not be repeated. As shown in Fig. 16, 'one light distribution sheet 23 is disposed in front of the irradiation direction of the light-emitting diode 4, 4-23-201132893. The one surface of the light distribution sheet 23 constituting the light distribution means 25 is formed with a plurality of convex portions 24 having a cross-sectional shape and a plurality of protrusions formed by a slightly triangular shape. Further, the first ridgeline direction p formed by the plurality of convex portions 24 is set to be perpendicularly intersected with the first oblique direction w1. Further, a convex portion 24 is formed in the same manner on the other surface of the light distribution sheet 23. Thereby, the light distribution means 25 having the rib directions in the two directions is formed via one of the light distribution sheets 23. However, the second ridge line direction q formed by the plurality of convex portions 24 provided on the other surface side thereof perpendicularly intersects the first ridge line direction. Therefore, the second ridge line direction q intersects the second oblique direction w2 perpendicularly. The other configuration is the same as that of the ultraviolet irradiation device 1 according to the first embodiment described above, and the description thereof will be omitted. The operation and effect similar to those of the ultraviolet irradiation device 1 of the first embodiment described above can be obtained by the ultraviolet irradiation device 2 1 having the above configuration. <3. Third embodiment> Next, a third embodiment of an ultraviolet irradiation device applied to the light irradiation device of the present invention will be described with reference to Fig. 17 . Fig. 17 is a perspective view showing a light-emitting diode and a light distribution sheet of the ultraviolet irradiation device according to the third embodiment. However, in the figure, the lens group 5 shown in Fig. 2 is omitted. The ultraviolet irradiation device 3 according to the third embodiment is configured to form a plurality of ridge lines on one surface of one light distribution sheet. Therefore, the light distribution sheet will be described here, and the ultraviolet irradiation device 1 will be described. The common symbols are attached to the section -24-201132893, and the repeated description is omitted. As shown in Fig. 17, one sheet of the light distribution sheet 33 is disposed in front of the irradiation direction of the light-emitting diode 4. A convex portion 34 having a substantially quadrangular pyramid shape is formed on the surface opposite to the surface facing the light-emitting diode 4 of the light distribution sheet 33. The convex portion 34 is arranged along the first oblique direction w 1 and the second oblique direction w2 of the light-emitting diode 4 disposed in the mounting portion 3a. Therefore, on one surface of the light distribution sheet 33, four inclined surfaces p', p", q', q" which form the convex portion 34 having a substantially square pyramid shape are formed. Further, the light distribution means 35 is formed via the light distribution sheet 33. However, in the ultraviolet irradiation device 3 1 according to the third embodiment, a line connecting the apexes of the plurality of convex portions 34 formed on the light distribution sheet 33 or a valley portion formed by the plurality of convex portions 34 is extended. The direction is the ridgeline direction of the present invention. The other configurations are the same as those of the ultraviolet irradiation device 1 according to the first embodiment described above, and the description thereof will be omitted. The ultraviolet irradiation device 31 having the above configuration can also obtain the same actions and effects as those of the ultraviolet irradiation device 1 according to the first embodiment. However, according to the ultraviolet irradiation device 2 1 ' 3 1 ' of the second and third embodiments, the number of light distribution sheets of the ultraviolet irradiation device 1 according to the first embodiment can be reduced, and the entire device can be realized. The reduction in quantity. <4. Fourth Embodiment Example Next, a fourth embodiment of the ultraviolet irradiation device of -25-201132893 applied to the light irradiation device of the present invention will be described with reference to Fig. 18'. Fig. 18 is a view showing the refracting and traveling of the light of the ultraviolet ray irradiation apparatus of the fourth embodiment. The ultraviolet irradiation device 4 1 according to the fourth embodiment differs from the ultraviolet irradiation device 1 according to the first embodiment in the shape of a convex portion. Therefore, the convex portions will be described here, and the same portions as those of the ultraviolet irradiation device 1 will be denoted by the same reference numerals, and the description thereof will not be repeated. As shown in Fig. 18 (a), the convex portion 42 of the ultraviolet irradiation device 4 1 has four inclined faces 42a having different inclination angles. Therefore, the light beam L incident on the convex portion 42 is distributed to the four directions via the four inclined surfaces 42a. Further, as shown in Fig. 18 (b), the irradiated object G is irradiated with the first irradiation center D1 irradiated along the first oblique direction w1, and the second irradiation center D2, the third The light of the center D3 and the fourth irradiation center D4 is irradiated. Here, the center of the distance from the center of the third interval Tw1 to the light-emitting element 4a of the light-emitting diode 4 is used as the reference point F. Further, the first illumination center D1 is located at a position intermediate the reference point F and the light-emitting element 4a. Further, the second irradiation center D2 is located at a position intermediate the reference point F and the center point. However, the third irradiation center D3 and the fourth irradiation center D4 are irradiated along the first oblique direction w1, and the light-emitting element 4a is sandwiched therebetween to become the first irradiation center D1 and the second. The position where the center D2 is symmetrical. Further, the light ray L1 irradiated from the second light-emitting diode 4w1 adjacent to the first oblique direction w1 is also set to be the same. Thereby, the uniformity of the distribution of the irradiation intensity between the adjacent two light-emitting diodes 4, 4wl can be improved. As a result, it is possible to improve the unevenness of the illumination intensity -26 - 201132893. However, the second oblique direction w2 is also the same, and the description thereof is omitted. The other configurations are the same as those of the ultraviolet irradiation device 1 according to the first embodiment described above, and the description thereof will be omitted. The ultraviolet irradiation device 41 having the above configuration can also obtain the same actions and effects as those of the ultraviolet irradiation device 1 according to the first embodiment. Referring to Fig. 19, Fig. 20 and Fig. 21, the distribution of the irradiation intensity of the ultraviolet irradiation device 1 according to the first embodiment is different from the distribution of the irradiation intensity of the ultraviolet irradiation device 4 according to the fourth embodiment. Description. Fig. 1 is a graph showing the illuminance intensity of a conventional light irradiation device which does not use a light distribution means. Fig. 20 is a graph showing the irradiation intensity of the light distribution means in one direction of the ultraviolet irradiation device 1 according to the first embodiment, and Fig. 21 shows the direction of one of the ultraviolet irradiation devices 4 1 according to the fourth embodiment. The illumination intensity chart of the light distribution means. However, the vertical axis shows the ratio of the intensity of the irradiation intensity of the conventional light irradiation device to the ratio of the intensity of the irradiation. Further, the horizontal axis indicates the position between the two light-emitting diodes 4, 4w 1 adjacent to the first direction w1. Further, the intensity distribution of the light irradiated from the first light-emitting diode 4 is shown as a circle, and the intensity distribution of the light irradiated from the adjacent two light-emitting diodes 4, 4wl is shown at four corners. Further, the solid line shows the actual irradiation intensity of the light of the adjacent two light-emitting diodes 4, 4wl. As shown in Fig. 19, in the conventional light irradiation device which does not use the light distribution means, the center of the two light-emitting diodes 4' 4wl adjacent to the first direction w1 is 0.

S -27- 201132893 ，即對角線的中心則照射強度變爲最弱，發光二極體4， 上則照射強度變爲最強。 如圖20所示，在有關第1實施形態例之紫外線照射裝 置1中，照射強度的峰値則於2個發光二極體4，4wl之間加 以形成2處。並且，照射強度最強的値係成爲較圖1 9所示 之以往的光照射裝置爲小，但照射強度最弱的値係較圖1 9 所示之以往的光照射裝置爲大。更且，照射強度的差則了 解到較以往的光照射裝置爲小。因此，較圖1 9所示之以往 的光照射裝置，有關第1實施形態例之紫外線照射裝置1則 了解到均一化光的照射強度。 另外，如圖2 1所示，在有關第4實施形態例之紫外線 照射裝置4 1中，照射強度的峰値則於2個發光二極體4， 4 w 1之間加以形成4處。另外，雖照射強度下降，但了解到 較圖19所示之以往的光照射裝置或有關第1實施形態例之 紫外線照射裝置1爲少。由此，如根據將光配光成4個之有 關第4實施形態例之紫外線照射裝置4 1，可較有關第1實施 形態例之紫外線照射裝置1，提昇照射強度分布之均一化 < 5、凸部之變形例> 接著，參照圖22~圖24，對於凸部的變形例加以說明 〇 圖22〜圖2 4係將配光薄片剖面於稜線方向之剖面圖。 圖22所示之配光薄片51之凸部5 2係其剖面形狀形成爲 -28- 201132893 略台形。因此，其凸部52係具有3個斜面52a。其結果，入 射於其配光薄片51的光線L係配光於3方向。 圖23所示之配光薄片61係雙凸透鏡。並且，其凸部62 之剖面形狀係形成爲略半圓形狀。因此，其凸部62的斜面 62 a係彎曲。其結果，入射於其配光薄片61的光線L係配光 於多方向。即使使用如此薄片，亦可得到與有關第1實施 形態例之紫外線照射裝置1同樣的效果。 另外，圖24所示之配光薄片71係凸部72與凸部72之間 則凹陷成略半圓狀。並且，其凸部72的斜面72 a係彎曲於 與圖23所示之凸部62相反方向。 經由具有如此構成之3個凸部52，62，72，亦可得到 與有關上述第1實施形態例之紫外線照射裝置1之凸部1 7同 樣的作用及效果。然而，凸部的形狀係不限於上述之構成 ’而可適用其他各種形狀。另外，爲了謀求照射於被照射 物之光線的分布之均一化，剖面於其稜線方向之剖面形狀 係形成爲左右對稱爲佳 。 < 6、發光二極體之配列的變形例> 接著，參照圖25及圖26，對於搭載於支持台之發光二 極體之配列的變形例加以說明。 圖25係顯示發光二極體的配列之正面圖，圖26係顯示 配光手段之正面圖及剖面圖。 另外，在圖25的配置例中，相鄰於橫方向X之2個發光 二極體4，4x之第1之間隔Tx的長度，和相鄰於縱方向y之2 -29- 201132893 個發光二極體4，打之第2之間隔Ty的長度則不同。但’相 鄰於第1之斜方向wl之2個發光二極體4’ 4wl之第3之間隔 Twl的長度係設定較第1之間隔Tx及第2之間隔Ty爲長。另 外，第1之斜方向wl與第2之斜方向w2係以角度Θ交叉於 光軸周圍。 另外，如圖26所示，配光手段85係經由複數之略四角 錐狀的凸部82加以構成。並且，在配光手段85之凸部82之 谷部83延伸存在的方向係成爲第1之稜線方向P’第2之稜 線方向q。 更且，在配光手段85之第1之稜線方向P係與第1之斜 方向wl垂直交叉。因此，對於被照射物G而言，沿著第1 之斜方向wl而照射2個之光像Jl，J2。更且’在配光手段 85之第2之稜線方向q係與第2之斜方向w2垂直交叉。因此 ，對於被照射物G而言，沿著第2之斜方向w2而照射2個之 光像J3，J4。 即，朝向於由相鄰之4個之發光二極體104所形成之長 方形的對角線之中心，將光進行配光。然而，在圖25所示 之配置例中，未使用配光手段之情況，由相鄰之4個之發 光二極體1〇4所圍住之長方形的對角線之中心則成爲最暗 部。 由此，經由如圖25所示之發光二極體4之配列，由對 應於相鄰之發光二極體的間隔長度及發光二極體的配列而 改變配光手段之稜線方向者，亦可得到與有關上述之第1 實施形態例之紫外線照射裝置1同樣的作用及效果。 -30- 201132893 另外，在圖26中，已說明過將配光手段85，經由複數 之略四角錘狀的凸部82而構成的例，但並不限定於此，而 與有關第1實施形態例之紫外線照射裝置1同樣地，由第1 之配光薄片7與第2之配光薄片8構成配光手段亦可。即， 第1之配光薄片7係其凸部17之第1之稜線方向p則呈與第1 之斜方向wl垂直交叉地加以配置，第2之配光薄片8係其凸 部17之第2之稜線方向q則呈與第2之斜方向w2垂直交叉地 加以配置。 然而，本發明係不限定於上述且圖面所示之實施形態 ，在不脫離記載於專利申請範圍之發明內容之範圍內，可 執行各種變形實施。作爲光照射裝置，說明過使用紫外線 照射裝置的例’但本發明係可適用於照明裝置，具備其他 各種之複數之發光元件的光照射裝置。 更且’作爲具有發光元件之光源，說明過使用照射紫 外線之發光二極體的例，但並不限定於此。例如，可使用 照射可視光之發光二極體，另外，亦可使用半導體雷射（ LD)或有機電激發光等之其他各種之發光元件。 另外’亦可將發光元件配列成千鳥格子狀。此情況， 在未使用配光手段時’呈與連結未照射到光之最暗部與最 近的發光元件之方向垂直交叉地，朝向配光手段之稜線方 向爲佳。然而，此情況，稜線係延伸存在於3個方向，但 稜線延伸存在的方向係經由發光元件的配列而爲3個以上 亦可。 更且’於發光手段之光的照射方向之前方，設置擴散 -31 - 201132893 率低的擴散板亦可。由此，可減輕照射強度最強處，與弱 處的差，可提昇照射強度之分布的均一化。 【圖式簡單說明】 圖1係顯示作爲本發明之光照射裝置所適用之紫外線 照射裝置之第1實施形態例的正面圖。 圖2係顯示作爲本發明之光照射裝置所適用之紫外線 照射裝置之第1實施形態例的剖面圖。 圖3係顯示搭載於有關作爲本發明之光照射裝置所適 用之紫外線照射裝置之第1實施形態例的支持台之發光元 件的斜視圖。 圖4係顯示搭載於有關作爲本發明之光照射裝置所適 用之紫外線照射裝置之第1實施形態例的發光元件及配光 手段的斜視圖。 圖5係說明從有關作爲本發明之光照射裝置所適用之 紫外線照射裝置之第1實施形態例之發光元件所照射的光 線之方向的模式圖。 圖6係顯示作爲本發明之光照射裝置所適用之紫外線 照射裝置之第1實施形態例的圖，圖6 ( a )係顯示經由配 光手段所折射的光線之說明圖’圖6(b)係顯示照射至被 照射物之光線的分布之說明圖。 圖7係顯示有關作爲本發明之光照射裝置所適用之紫 外線照射裝置之配光薄片的頂角與配光角度的圖表。 圖8係顯示作爲本發明之光照射裝置所適用之紫外線 -32- 201132893 照射裝置之第1實施形態例的圖，圖8 ( a )係顯示從紫外 線照射裝置所照射的光線之強度分布圖表，圖8 ( b )係顯 示從紫外線照射裝置所照射之光線的方向之模式圖。 圖9係顯示未使用配光手段而照射至被照射物的光像 之平面圖。 ® 1 0係顯示透過有關作爲本發明之光照射裝置所適用 之紫外線照射裝置之第1實施形態例之第1之配光薄片而照 射至被照射物的光像之平面圖。 圖u係顯示透過有關作爲本發明之光照射裝置所適用 之紫外線照射裝置之第1實施形態例之配光手段而照射至 被照射物的光像之平面圖。 圖係顯示爲了與本發明之光照射裝置做比較之光照 射裝®的發光元件與配光手段的斜視圖。 圖係顯示從圖12所示之光照射裝置的1個之發光元 件所照射的光像之平面圖。 圖1 4係顯示從圖1 2所示之光照射裝置所照射的光像之 說明圖。 圖1 5係顯示從作爲本發明之光照射裝置所適用之紫外 線照射裝置之第1實施形態例所照射的光像之說明圖。 圖16係顯示有關本發明之光照射裝置之配光手段的第 2實施形態例之發光元件與配光薄片的斜視圖。 圖1 7係顯示有關本發明之光照射裝置之配光手段的第 3實施形態例之發光元件與配光薄片的斜視圖。 圖1 8係顯示作爲本發明之光照射裝置所適用之紫外線 -33- 201132893 照射裝置之第4實施形態例的圖，圖1 8 ( a )係顯示經由配 光手段所折射的光線之說明圖，圖1 8 ( b )係顯示照射至 被照射物之光線的分布之說明圖。 圖19係顯示未使用配光手段之以往的光照射裝置之照 射強度圖表。 圖20係顯示作爲本發明之光照射裝置所適用之紫外線 照射裝置之第1實施形態例的照射強度圖表。 圖2 1係顯示作爲本發明之光照射裝置所適用之紫外線 照射裝置之第4實施形態例的照射強度圖表。 圖22係顯示本發明之光照射裝置的配光手段之凸部的 變形例之剖面圖》 圖23係顯示本發明之光照射裝置的配光手段之凸部的 變形例之剖面圖。 圖24係顯示本發明之光照射裝置的配光手段之凸部的 變形例之剖面圖。 圖25係顯示搭載於載置部之複數之發光元件的配列之 變形例的模式。 圖2 6係顯示對應於圖25所示之發光元件的配列之配光 手段的平面圖及剖面圖。 圖27係顯示以往之光照射裝置的圖，圖27 ( a )係顯 示從光照射裝置所照射的光線之強度分布圖表，圖27 (b )係顯示從光照射裝置所照射之光線的方向之模式圖。 【主要元件符號說明】 -34- 201132893 1，2 1，3 1，4 1 :紫外線照射裝置（光照射裝置） 2 :框體 3 :支持台 3a :載置部 4，4wl，4w2，4x，4y:發光二極體 4a :發光元件 5 :透鏡群（光控制手段） 6 :散熱器 7，23，33，51，61，71:第1之配光薄片 8 :第2之配光薄片 9， 25， 35， 85:配光手段 17， 24， 34， 42， 52， 62， 72， 82:凸部 83 :谷部 17a， 42a > 52a:斜面 G :被照射物 Η :照射區域 Κ，ΚΙ，Κ2，Κ3，Κ4 :照射中心 L，L1 :光線 Μ，ml，m2，m3，m4:光像 ΜΑ :全體光像 X :橫方向 y :縱方向 W 1 :第1之斜方向 w2:第2之斜方向 -35- 201132893 P:第1之稜線方向 q:第2之稜線方向 T X :第1之間隔 Ty :第2之間隔 Twl :第3之間隔S -27- 201132893 , that is, the center of the diagonal line has the weakest illumination intensity, and on the light-emitting diode 4, the illumination intensity becomes the strongest. As shown in Fig. 20, in the ultraviolet irradiation device 1 according to the first embodiment, the peak of the irradiation intensity is formed between the two light-emitting diodes 4 and 4wl. Further, the lanthanide system having the strongest irradiation intensity is smaller than the conventional light irradiation device shown in Fig. 19. However, the lanthanum system having the weakest irradiation intensity is larger than the conventional illuminating device shown in Fig. 19. Further, the difference in the irradiation intensity is smaller than that of the conventional light irradiation device. Therefore, the ultraviolet light irradiation device 1 according to the first embodiment has an illumination intensity of uniform light as compared with the conventional light irradiation device shown in Fig. 19. Further, as shown in Fig. 21, in the ultraviolet irradiation device 4 1 according to the fourth embodiment, the peak of the irradiation intensity is formed at four places between the two light-emitting diodes 4, 4 w 1 . Further, although the irradiation intensity is lowered, it is understood that the conventional light irradiation device shown in Fig. 19 or the ultraviolet irradiation device 1 according to the first embodiment is less. Therefore, according to the ultraviolet irradiation device 4 1 according to the fourth embodiment, the ultraviolet irradiation device 1 of the first embodiment can be used to improve the uniformity of the irradiation intensity distribution. (Modification of convex portion) Next, a modification of the convex portion will be described with reference to Figs. 22 to 24, and Fig. 22 to Fig. 24 are sectional views showing a cross section of the light distribution sheet in the ridge direction. The convex portion 52 of the light distribution sheet 51 shown in Fig. 22 has a cross-sectional shape of -28-201132893. Therefore, the convex portion 52 has three inclined faces 52a. As a result, the light L incident on the light distribution sheet 51 is distributed in the three directions. The light distribution sheet 61 shown in Fig. 23 is a lenticular lens. Further, the cross-sectional shape of the convex portion 62 is formed into a substantially semicircular shape. Therefore, the inclined surface 62a of the convex portion 62 is curved. As a result, the light ray L incident on the light distribution sheet 61 is distributed in a plurality of directions. Even when such a sheet is used, the same effects as those of the ultraviolet irradiation apparatus 1 of the first embodiment can be obtained. Further, the light distribution sheet 71 shown in Fig. 24 is recessed in a substantially semicircular shape between the convex portion 72 and the convex portion 72. Further, the inclined surface 72a of the convex portion 72 is curved in a direction opposite to the convex portion 62 shown in Fig. 23. The action and effect similar to the convex portion 17 of the ultraviolet irradiation device 1 according to the first embodiment described above can be obtained by the three convex portions 52, 62, and 72 having the above configuration. However, the shape of the convex portion is not limited to the above configuration, and other various shapes are applicable. Further, in order to uniformize the distribution of the light that is irradiated onto the object to be irradiated, it is preferable that the cross-sectional shape of the cross section in the ridge direction is formed as a right and left pair. <6. Modification of arrangement of light-emitting diodes> Next, a modification of the arrangement of the light-emitting diodes mounted on the support table will be described with reference to Figs. 25 and 26 . Fig. 25 is a front view showing the arrangement of the light-emitting diodes, and Fig. 26 is a front view and a cross-sectional view showing the light distribution means. Further, in the arrangement example of Fig. 25, the length of the first interval Tx of the two light-emitting diodes 4, 4x adjacent to the lateral direction X, and the length of the second -29-201132893 adjacent to the longitudinal direction y In the diode 4, the length of the second interval Ty is different. However, the length of the third interval Tw1 of the two light-emitting diodes 4' to 4w1 adjacent to the first oblique direction w1 is set to be longer than the first interval Tx and the second interval Ty. Further, the first oblique direction w1 and the second oblique direction w2 intersect at an angle Θ around the optical axis. Further, as shown in Fig. 26, the light distribution means 85 is constituted by a plurality of substantially rectangular pyramid-shaped convex portions 82. Further, the direction in which the valley portion 83 of the convex portion 82 of the light distribution means 85 extends is the second ridge direction q in the first ridge line direction P'. Further, the first ridge line direction P of the light distribution means 85 is perpendicularly intersected with the first oblique direction w1. Therefore, in the object G to be irradiated, two light images J1 and J2 are irradiated along the first oblique direction w1. Further, the second ridge line direction q of the light distribution means 85 intersects the second oblique direction w2 perpendicularly. Therefore, for the object G to be irradiated, two light images J3 and J4 are irradiated along the second oblique direction w2. That is, the light is distributed toward the center of the diagonal line formed by the adjacent four light-emitting diodes 104. However, in the arrangement example shown in Fig. 25, in the case where the light distribution means is not used, the center of the diagonal of the rectangle surrounded by the adjacent four light-emitting diodes 1?4 becomes the darkest portion. Therefore, by arranging the light-emitting diodes 4 as shown in FIG. 25, the ridge line direction of the light distribution means can be changed by the interval length corresponding to the adjacent light-emitting diodes and the arrangement of the light-emitting diodes. The same actions and effects as those of the ultraviolet irradiation device 1 of the first embodiment described above are obtained. -30-201132893 In addition, in FIG. 26, the light distribution means 85 has been described as being formed by a plurality of substantially rectangular hammer-shaped convex portions 82. However, the present invention is not limited thereto, and the first embodiment is also described. Similarly, the ultraviolet irradiation device 1 may be configured such that the first light distribution sheet 7 and the second light distribution sheet 8 constitute a light distribution means. In other words, the first light distribution sheet 7 is disposed such that the first ridge line direction p of the convex portion 17 is perpendicularly intersected with the first oblique direction w1, and the second light distribution sheet 8 is the convex portion 17 The ridge line direction q of 2 is arranged perpendicularly to the second oblique direction w2. However, the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the scope of the invention as described in the appended claims. An example in which an ultraviolet irradiation device is used as the light irradiation device is described. However, the present invention is applicable to an illumination device, and includes a light irradiation device of a plurality of other light-emitting elements. Further, as an example of a light source having a light-emitting element, a light-emitting diode using an ultraviolet ray is used, but the invention is not limited thereto. For example, a light-emitting diode that illuminates visible light can be used, and other various light-emitting elements such as semiconductor laser (LD) or organic electroluminescence light can be used. Further, the light-emitting elements may be arranged in a grid pattern of a thousand birds. In this case, when the light distribution means is not used, it is preferable that the direction of the ridge line of the light distribution means is perpendicular to the direction in which the darkest portion that is not irradiated with light is perpendicularly intersected with the nearest light-emitting element. However, in this case, the ridgeline is extended in three directions, but the direction in which the ridgeline extends may be three or more via the arrangement of the light-emitting elements. Further, a diffusion plate having a low diffusion rate of -31 - 201132893 may be provided in front of the irradiation direction of the light of the light-emitting means. Thereby, the difference between the strongest intensity and the weak point can be reduced, and the uniformity of the distribution of the irradiation intensity can be improved. [Brief Description of the Drawings] Fig. 1 is a front view showing a first embodiment of an ultraviolet irradiation device to which the light irradiation device of the present invention is applied. Fig. 2 is a cross-sectional view showing a first embodiment of an ultraviolet irradiation device to which the light irradiation device of the present invention is applied. Fig. 3 is a perspective view showing a light-emitting element of a support table according to a first embodiment of the ultraviolet irradiation device to which the light irradiation device of the present invention is applied. Fig. 4 is a perspective view showing a light-emitting element and a light distribution means according to a first embodiment of the ultraviolet irradiation device to which the light irradiation device of the present invention is applied. Fig. 5 is a schematic view showing the direction of the light emitted from the light-emitting element of the first embodiment of the ultraviolet irradiation device to which the light irradiation device of the present invention is applied. Fig. 6 is a view showing a first embodiment of an ultraviolet irradiation device to which the light irradiation device of the present invention is applied, and Fig. 6(a) is an explanatory view showing a light refracted by the light distribution means. Fig. 6(b) An explanatory view showing the distribution of light rays that are irradiated onto the object to be irradiated is shown. Fig. 7 is a graph showing the apex angle and the light distribution angle of the light distribution sheet of the ultraviolet irradiation device to which the light irradiation device of the present invention is applied. Fig. 8 is a view showing a first embodiment of an ultraviolet-32-201132893 irradiation apparatus to which the light irradiation apparatus of the present invention is applied, and Fig. 8(a) is a graph showing the intensity distribution of light irradiated from the ultraviolet irradiation apparatus. Fig. 8(b) is a schematic view showing the direction of the light irradiated from the ultraviolet irradiation device. Fig. 9 is a plan view showing an optical image irradiated to an object to be irradiated without using a light distribution means. In the light-emitting image of the first light-shielding sheet of the first embodiment of the ultraviolet-ray irradiation device to which the light-emitting device of the present invention is applied, the light-emitting image of the object to be irradiated is displayed. Fig. u is a plan view showing an optical image that is irradiated onto an object to be irradiated by the light distribution means of the first embodiment of the ultraviolet irradiation device to which the light irradiation device of the present invention is applied. The figure shows a perspective view of a light-emitting element and a light distribution means for the illumination of the light-emitting device of the present invention. The figure shows a plan view of an optical image irradiated from one of the light-emitting elements of the light irradiation device shown in Fig. 12. Fig. 14 is an explanatory view showing an optical image irradiated from the light irradiation device shown in Fig. 12. Fig. 1 is an explanatory view showing an optical image irradiated from the first embodiment of the ultraviolet irradiation device to which the light irradiation device of the present invention is applied. Fig. 16 is a perspective view showing a light-emitting element and a light distribution sheet according to a second embodiment of the light distribution means of the light-emitting device of the present invention. Fig. 1 is a perspective view showing a light-emitting element and a light distribution sheet according to a third embodiment of the light distribution means of the light-emitting device of the present invention. Fig. 1 is a view showing a fourth embodiment of the ultraviolet-33-201132893 irradiation device to which the light irradiation device of the present invention is applied, and Fig. 18(a) is an explanatory view showing light rays refracted by the light distribution means. Fig. 18 (b) is an explanatory view showing the distribution of light rays irradiated to the object to be irradiated. Fig. 19 is a graph showing the illuminance intensity of a conventional light irradiation device which does not use a light distribution means. Fig. 20 is a graph showing the irradiation intensity of the first embodiment of the ultraviolet irradiation device to which the light irradiation device of the present invention is applied. Fig. 2 is a graph showing the irradiation intensity of a fourth embodiment of the ultraviolet irradiation device to which the light irradiation device of the present invention is applied. Fig. 22 is a cross-sectional view showing a modification of the convex portion of the light distribution means of the light irradiation device of the present invention. Fig. 23 is a cross-sectional view showing a modification of the convex portion of the light distribution means of the light irradiation device of the present invention. Fig. 24 is a cross-sectional view showing a modification of the convex portion of the light distribution means of the light irradiation device of the present invention. Fig. 25 is a view showing a modification of the arrangement of the plurality of light-emitting elements mounted on the mounting portion. Fig. 2 is a plan view and a cross-sectional view showing a light distribution means corresponding to the arrangement of the light-emitting elements shown in Fig. 25. Fig. 27 is a view showing a conventional light irradiation device, Fig. 27 (a) showing an intensity distribution chart of light irradiated from the light irradiation device, and Fig. 27 (b) showing a direction of light irradiated from the light irradiation device. Pattern diagram. [Description of main component symbols] -34- 201132893 1,2 1,3 1,4 1 : Ultraviolet irradiation device (light irradiation device) 2 : Frame 3 : Support table 3a : Mounting unit 4, 4wl, 4w2, 4x, 4y: Light-emitting diode 4a: Light-emitting element 5: Lens group (light control means) 6: Heat sink 7, 23, 33, 51, 61, 71: First light distribution sheet 8: Second light distribution sheet 9 , 25, 35, 85: Light distribution means 17, 24, 34, 42, 52, 62, 72, 82: convex portion 83: valley portion 17a, 42a > 52a: slope G: object to be irradiated: irradiation areaΚ , ΚΙ, Κ 2, Κ 3, Κ 4 : irradiation center L, L1 : light Μ, ml, m2, m3, m4: light image 全体 : whole light image X: horizontal direction y: vertical direction W 1 : first oblique direction w2 : 2nd oblique direction - 35 - 201132893 P: 1st ridgeline direction q: 2nd ridgeline direction TX: 1st interval Ty: 2nd interval Twl: 3rd interval

Tw2 :第4之間隔Tw2: the fourth interval

Claims (1)

201132893 七、申請專利範圍： 1· 一種光照射裝置，其特徵爲具備：具有對向於被照 射物之載置部的支持台； 配列於前述支持台之前述載置部加以搭載之複數之發 光元件； 配置於前述複數之發光元件的照射方向之前方，控制 前述複數之發光元件的照射光的行進方向之光控制手段； 和，配置於前述光控制手段之前述照射方向的前方， 折射前述複數之發光元件的前述照射光而配光至複數之方 向的配光手段； 前述配光手段係具有排列於複數的列之複數之凸部， 形成經由前述複數之凸部而延伸存在於相互不同之方向的 複數之稜線， 前述複數之稜線的方向係於未使用前述配光手段之情 況，延伸存在於與連結在前述被照射物成爲最暗部之處’ 與從前述最暗部最近的發光元件的線垂直交叉的方向。 2.如申請專利範圍第1項記載之光照射裝置，其中’ 前述配光手段之前述複數之稜線的方向係與在前述複數之 發光元件之縱方向’橫方向及與相鄰於斜方向之發光元件 之間隔之中，其間隔最長之方向垂直交叉。 3 .如申請專利範圍第1項或第2項記載之光照射裝置， 其中，前述配光手段之前述複數之稜線的方向係由在前述 複數之發光元件之相鄰的發光元件圍住時’與所形成之範 圍的對角線垂直交叉° S -37- 201132893 4. 如申請專利範圍第1項至第3項中任一項記載之光照 射裝置’其中，前述複數之凸部係剖面於與前述稜線的方 向垂直交叉之方向之形狀爲左右對稱。 5. 如申請專利範圍第1項至第4項中任一項記載之光照 射裝置’其中，對於前述複數之凸部，係形成有各複數之 斜面。 6. 如申請專利範圍第1項至第5項中任一項記載之光照 射裝置，其中，前述配光手段係具有： 具有第1之稜線方向之第1之配光薄片； 和對於前述第1之棱線的方向而言，具有於光軸周圍 具有特定角度旋轉之第2之棱線方向的第2之配光薄片。 7 ·如申請專利範圍第1項至第5項中任一項記載之光照 射裝置，其中，前述配光手段係由一片之配光薄片所構成 對於前述配光薄片之一面’係形成有第1之稜線方向 對於前述配光薄片之另一面，係形成有對於前述第1 之棱線的方向而言，於光軸周圍具有特定角度旋轉之第2 之稜線方向" 8.如申請專利範圍第1項至第5項中任一項記載之光照 射裝置，其中’前述配光手段係由一片之配光薄片所構成 j 對於前述配光薄片之一面’係形成有第1之稜線方向 ，和對於前述第1之稜線的方向而言，於光軸周圍具有特 -38- 201132893 定角度旋轉之第2之稜線方向。 9.如申請專利範圍第6項至第 射裝置，其中，前述複數之發光： 相鄰於縱方向及橫方向之發光元i 以配置，前述第1之稜線方向係業 的配列方向而言’傾斜4 5 °加以語 前述第2之稜線方向係呈與前 叉地加以設定。 1 0 .如申請專利範圍第1項至 照射裝置，其中，前述複數之凸老 段，對應於前述被照射物之距離力丨 8項中任一項記載之光照 己件係於前述載置部，與 卜的間隔呈略等間隔地加 於前述複數之發光元件 定， 述第1之棱線方向垂直交 春9項中任一項記載之光 5的頂角係從前述配光手 以設定。 -39201132893 VII. Patent application scope: 1. A light irradiation device characterized by comprising: a support table having a mounting portion facing the object to be irradiated; and a plurality of light rays mounted on the mounting portion of the support table a light control device that controls a traveling direction of the illumination light of the plurality of light-emitting elements before the irradiation direction of the plurality of light-emitting elements; and is disposed in front of the irradiation direction of the light control means to refract the plural a light distribution means for distributing light to a plurality of directions in the light-emitting element; the light distribution means having a plurality of convex portions arranged in a plurality of rows, and extending through the plurality of convex portions to be different from each other The ridge line of the plurality of directions, the direction of the ridge line of the plurality of lines is extended to the line connecting the light-emitting element closest to the darkest portion from where the object to be irradiated becomes the darkest portion when the light distribution means is not used. The direction of vertical crossing. 2. The light-irradiating device according to claim 1, wherein the direction of the plurality of ridgelines of the light distribution means is transverse to the longitudinal direction of the plurality of light-emitting elements and adjacent to the oblique direction Among the intervals of the light-emitting elements, the direction in which the intervals are the longest intersects vertically. The light-irradiating device according to the first or second aspect of the invention, wherein the ridge line of the plurality of light-emitting elements is surrounded by adjacent light-emitting elements of the plurality of light-emitting elements. The light irradiation device of any one of the above-mentioned items, wherein the plurality of convex portions are cross-sectioned in the light irradiation device of any one of the above-mentioned items. The shape of the direction perpendicular to the direction of the ridge line is bilaterally symmetrical. 5. The illumination device according to any one of claims 1 to 4, wherein the plurality of convex portions are formed with a plurality of inclined faces. The light-emitting device according to any one of the first to fifth aspect, wherein the light distribution means has: a first light distribution sheet having a first ridge line direction; The direction of the ridgeline of 1 is a second light distribution sheet having a second ridgeline direction having a specific angular rotation around the optical axis. The light-emitting device according to any one of the first to fifth aspect, wherein the light distribution means is formed of one sheet of light distribution sheet, and the surface of the light distribution sheet is formed The ridge line direction of the first light distribution sheet is formed with a second ridge line direction having a specific angular rotation around the optical axis in the direction of the first ridge line. 8. The light-emitting device according to any one of the items 1 to 5, wherein the light distribution means is constituted by one light distribution sheet, and the first ridge line direction is formed on one surface of the light distribution sheet. And the direction of the first ridge line has a second ridge line direction of the angle -38-201132893 around the optical axis. 9. The sixth aspect of the invention, wherein the plurality of illuminating means: the illuminating element i adjacent to the longitudinal direction and the lateral direction is arranged, and the first ridge line direction is arranged in the direction of the industry. Tilting 4 5 ° The second ridge line direction is set with the front fork. In the first aspect of the invention, the illuminating device, wherein the plurality of embossed segments, the illuminating member corresponding to any one of the distance objects of the illuminating object is attached to the loading portion The light-emitting element is applied to the plurality of light-emitting elements at a slight interval from the interval of the first, and the apex angle of the light 5 described in any one of the first ridge directions is set from the light distribution hand. . -39
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