565674 A7 B7 五、發明説明（1) 〔產業上之利用領域〕 本發明係關於無影燈，尤其是有關醫療用燈具，特另0 是配置在手術室的供照射手術台上用的無影燈者。 〔先前之技術〕 如周知，無影燈係爲了使不會發生在手術.台上的患者 的患部進行手術的醫師或助手等的施術者所產生的影，且 使以均一的亮度進行照射患部用者。習知的一般的無影燈 ，如第1 3 ( a )圖所示的外觀圖，係由將複數個電球 1 0 2配列在燈具本體1 0 1的表面上所構成，且藉由從 各電球1 0 2射出的光分別從不同角度方向照射患部，使 由一個電球的光所產生的影利用其他的電球的光抵消，來 防止施術者所產生的影所構成。且，習知的其他的無影燈 ，如第1 3 ( b )圖的剖面圖所示，係提案：在燈具外殻 1 1 1內配置作爲光源的一個或2個的電球1 1 2，利用 集光鏡片1 1 3放大來自於該電球1 1 2的光束後，利用 設在燈具外殻1 1 1的前面的外側鏡片1 1 4屈折經放大 的光束，再由該外側鏡片1 1 4擴散的狀態下射出光來照 射患部者。 〔本發明所欲解決的課題〕 但是，在第1 3 ( a )圖的無影燈中，爲了以均一且 預定的色光照射手術台，必需齋備複數同亮度及色相的電 球1 0 2，而必需使用符合規格的電球。特別是，只要其 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -----------裝-- (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 -4- 經濟部智慧財產局員工消費合作社印製 565674 A7 B7 五、發明説明（2) 中任一的電球損傷，或達到壽命時，不容易可馬上交換與 其他電球相同亮度、色相的電球，使無影燈的維修變得很 麻煩的問題。且，也有使供點亮複數電球用的消費電力變 大的問題。 對於此，第1 3 ( b )圖的無影燈，因爲與第1 3 ( a )圖的無影燈相比可以減低電球數，使電球交換等的管 理變得容易，且在減低消費電力上也有利。但是，爲了使 由電球1 1 2射出的光朝外側鏡片1 1 4的廣面射入，有 必要利用集光鏡片1 1 3放大光束，且將經如此被放大的 光對於外側鏡片1 1 4均一地射入係有困難，因此，使設 計供獲得朝徑方向及圓周方向均一地配光特性用的外側鏡 片變得困難。且，因爲從集光鏡片1 1 3朝外側鏡片 1 1 4入射的各光的入射角度各不相同，所以無法避免使 供屈折入射光而設在外側鏡片1 1 4的鏡片階段的形狀變 成呈三次元方向複雜的形狀，因此，有：使鏡片階段的設 計變得困難，並且，也不容易利用樹脂成型法製造外側鏡 片1 1 4，而變得不容易製造符合設計的配光特性的無影 燈的問題。 因此，本發明的目的，便在於提供一種以較少數的電 球構成光源之外，使供獲得預定的配光特性用的鏡片設計 及製造變得容易的無影燈。 〔用以解決課題的手段〕 爲解決上述的課題，本發明的無影燈，係作成：具有 --------1¾衣----^--1T------^ (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -5 - 經濟部智慧財產局員工消費合作社印製 565674 A7 _____B7_ 五、發明説明（3) :光源、及使從前述電球射出的光朝向圓周並以平行光束 射出的聚光鏡、及在以前述光源爲中心的不同半徑位置使 從前述聚光鏡射出的光分別幾乎朝同一方向反射的反射鏡 、及屈折從前述反射鏡反射出來的光成爲預定的配光特性 的外側鏡片的結構。 依據本發明，從電球及聚光鏡射出的光在反射鏡3呈 平行光束狀態下被反射，且當爲了射入至外側鏡片5並被 屈折，而設計供獲得預定的配光特性用的外側鏡片5的鏡 片階段5 5時，只要可屈折平行及接近平行的光並獲得預 定的配光特性即可，使鏡片階段的設計變得容易，而可容 易地設計、製造預定的配光特性的無影燈。 且，前述反射鏡，被分割成以前述光源爲中心的不同 半徑位置各形成帶狀的複數區分反射領域，且前述區分反 射面領域係形成對於前述反射鏡的光軸方向呈階段狀的剖 面形狀較佳。由此，可以減低反射鏡的光軸方向的寬尺寸 ，且可以使無影燈的厚度變薄。 一方面，作成：在前述外側鏡片，係爲：在使朝徑方 向屈折由前述反射鏡被反射的光的複數鏡片朝徑方向並列 配置的狀態下形成，前述外側鏡片的外徑側的前述鏡片階 段係以比前述鏡片階段更朝徑方向內側屈折前述光的結構 。由此，可以實現擴散性佳的照射，而獲得無影燈的較佳 的配光特性。 且，作成：前述外側鏡片係由朝圓周方向分割的複數 的分割鏡片所構成，前述分割鏡片係由接近三角形的平板 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） ΓβΤ ---------赛----Ί--1Τ------^ (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 565674 A7 B7 五、發明説明（4) 狀的透明構件形成，前述徑方向的剖面呈鋸齒狀的前述鏡 片階段係以沿著接線方向的直線狀且朝徑方向並列配置在 其表面的結構。由這種結構，即使將形成在各分割鏡片的 鏡片階段作爲直線狀的平面形狀的情況，也成爲形成全體 爲環狀的鏡片階段，而可以使鏡片階段的設計變得更容易 。且，前述分割鏡片的鏡片階段係爲呈平面形狀並列配置 直線形狀，且剖面形狀也爲由垂直面及傾斜面所組成的鋸 齒狀，所以即使由利用可能成型形成分割鏡片的情況，壓 模的製造係爲容易，且利用樹脂成型變得容易製造高精度 的分割鏡片。而且，使前述分割鏡片的分割面作成對於反 射鏡的光軸方向朝圓周方向傾斜的傾斜面的結構。這種情 況，前述分割面的表面係爲經粗面加工較佳。由此，可以 防止反射鏡的反射光通過分割鏡片間的間隙而成爲漏光。 且，藉由在前述外側鏡片的形成有前述鏡片階段的面及相 反側的面，形成使光朝與前述徑方向垂直的方向擴散的擴 散階段，而可以進行更均一的照射。 這種情況，藉由作成：前述光源及聚光鏡，係爲：朝 前述反射鏡的光軸方向並列各設有2個，接近前述反射鏡 的中心側的第1光源及第1聚光鏡係對於前述反射鏡的光 軸方向以幾乎垂直方向且對於前述反射鏡的中心側的領域 射出光，前述第2光源及第2聚光鏡係以比對於前述反射 鏡的光軸方向幾乎垂直更朝前述反射鏡的中心側傾斜方向 且對於前述反光鏡的周邊側的領域出射光的結構，因此， 特別是，可以使周邊反射面領域的光軸方向的位置朝反射 本紙張尺度適用中國國家標準（CNS ) A4規格（21〇Χ：297公釐） ----------裝----Ί--訂---^-------線 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 565674 A7 _B7 五、發明説明（5) 鏡後方後退，而縮短此後退部分的反射鏡的光軸方向的尺 寸，而可以減低反射鏡及無影燈的厚度尺寸。 〔實施例〕 茲佐以圖面說明本發明之無影燈。第1圖係爲本發明 的無影燈的外觀圖，第2圖係顯示其中心位置的剖面圖， 第3圖係顯示各部分的槪略結構的分解立體圖。對於這些 圖，係爲：無影燈1的外殻部2具有呈圓形傘狀的燈具外 殼2 1 ，在前述燈具外殼2 1的上面的中心位置立設有圓 柱狀的座2 2 ，介由此座2 2被支撐在第1圖中由鎖線所 示的支撐臂2 3 ，並且，利用插通該座2 2的圖外的電線 電連接在外部電源，使點亮後述電球的結構。在前述燈具 外殼2 1內，內裝有同樣地呈圓形傘狀的反射鏡3 ，並且 ，在前述反射鏡3的內面側的中心位置配置有光源部4。 前述光源部4，係爲：包含詳細後述的沿著前述反射鏡3 的光軸方向（第2圖的上下方向）配列的2個電球及2個 聚光鏡其全體呈圓筒狀的結構。而且，在前述反射鏡3的 前面位置，利用多數的分割鏡片5 1配置有其全體呈頂角 大且接近平坦的圓錐面狀被組裝的外側鏡片5 ，且配置有 重疊在其外側並形成同樣形狀的圓錐面狀的擴散板6，且 這些外側鏡片5及擴散板6對於前述燈具外殻2 1的圓形 開口緣2 5以被作成圓環狀的周緣部2 4固定在其周緣。 前述光源部4，如第4圖的切開一部分的分解立體圖 所示，具有聚光鏡構體4 1及光源構體4 2。前述聚光鏡 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 7〇1 ' " --------丨裝----^--訂-------線 (請先閱讀背面之注意事項再填寫本頁) 565674 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明説明（6) 構體4 1 ，具有形成圓形板狀的第1鏡片支架4 1、及 形成圓環狀的第2鏡片支架412和第3鏡片支架413 ，在第1鏡片支架4 1 1和第2鏡片支架4 1 2間挾住作 成圓環狀的第1聚光鏡4 1 4，在第2鏡片支架4 1 2和 第3鏡片支架4 1 3間挾住同樣作成圓環狀的第2聚光鏡 4 1 5 ，在圓周方向的3處，從前述第1鏡片支架4 1 1 橫跨至第3鏡片支架4 1 3朝筒軸方向插通締結桿4 1 6 ，藉由在其兩端部利用螺帽4 1 7締結，使前述第1〜3 鏡片支架4 1 1〜4 1 3和第1及2聚光鏡4 1 4、 4 1 5 —體化。而且，前述聚光鏡構體4 1，貫穿被設在 前述反光鏡3的中心部的中心孔3 1 ，對於前述第1鏡片 支架4 1 1被固定支撐在燈具外殻2 1的內面的中心領域 。在此，前述第1及2聚光鏡4 1 4、4 1 5，如參照第 2圖可知，沿著各聚光鏡4 1 4、4 1 5的徑方向的剖面 形狀，係設計成使該聚光鏡的環狀中心爲集光焦點的剖面 形狀。 且，被內裝支撐在前述聚光鏡構體4 1內的前述光源 構體4 2，在圓形基板4 2 1的下面側，由組裝2片的第 1及2支撐板4 2 2、4 2 3和3條的柱材4 2 4的格子 體所構成，第1電球座4 2 5被支撐在此.格子體內的前述 第1支撐板4 2 2，第2電球座4 2 6被支撐在前述第2 支撐板423。在前述第1及2電球座425、426支 撐有由鹵素燈所構成的第1電球4 2 7及第2電球4 2 8 。而且，前述光源構體4 2從前述聚光鏡構體4 1的第1 (請先閲讀背面之注意事項再填寫本頁) -裝· 訂 線 本紙張尺度適用中國國家標準（CNS ) A4規格（210 X 297公釐） -9 - 565674 經濟部智慧財產局員工消費合作社印製 A7 _______ B7_ 五、發明説明（7) 鏡片支架4 1 1的環狀孔插入至內部，使前述圓形基板 4 2 1塞住前述第1鏡片支架4 1 1的環狀內部地配置後 ’對於前述第1鏡片支架4 1 1利用螺合在螺絲孔 4 1 1 a 、4 2 1 a的螺絲被固定。由此，構成前述光源 部4 ，由此組裝成的光源部4，如參照第2圖可知，前述 第1電球4 2 7位置在前述第1聚光鏡4 1 4的焦點，前 述第2電球4 2 8係成爲配置在從前述第2聚光鏡4 1 5 的焦點沿著筒軸方向，也就是反光鏡3的光軸方向僅朝第 2支撐板4 2 3側偏離的位置。 一方面，前述反光鏡3，係爲仿形加工由表面作成光 反射面所構成的金屬板且形成傘狀者，如在第5圖所示之 含有光軸的右半部的放大剖面圖，在含有光軸的中心部開 口有中心孔3 1 ，且貫穿有前述光源部4。且，前述反光 鏡3的反射面的領域中，從前述中心位置至半徑方向的幾 乎3 / 4的長度爲止的中心側領域3 2，係被區分爲複數 的作成圓環狀的面領域，且各被區分的面領域係使徑方向 的剖面形狀呈階段狀地彎曲形成。而且，前述被區分的面 領域中，從內徑側沿著外徑側朝向反射鏡的前方傾斜的各 面領域，在此爲4個的面領域係分別構成區分反射面領域 3 2 a〜3 2 d，使如後述使從前述第1電球4 2 7和第 1聚光鏡4 1 4射出的光朝向反光鏡3的前方反射地構成 。前述4個的區分反射面領域3 2 a〜3 2 d係以對於前 述反光鏡3的光軸4 5度的角度傾斜的圓錐面的一部分所 構成。且，位置在前述反光鏡3的前述中心側領域3 2的 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） _ 1〇 - (請先閱讀背面之注意事項再填寫本頁) 1— - J-- .裝· 訂 -線 565674 經濟部智慧財產局員工消費合作社印製 A7 _B7 _五、發明説明（8) 外側爲周邊側領域3 3，在此構成一個周邊反射面領域， 且以對於前述反光鏡3的光軸預定角度，例如4 5度的角 度傾斜的圓錐面的一部分所構成。然而，這種反光鏡3的 形狀，係與，將有同圖以鎖線顯示的4 5度的角度傾斜的 圓錐面朝光軸方向分割，使各分割面朝光軸方向移動後， 使成爲各分割面連接的面地連結的結構相同，使原來的圓 錐面的光軸方向的長度L 2可作成短的光軸長度L 1。而 且，前述反光鏡3對於前述中心孔3 1的開口緣部3 4， 被挾持在前述聚光鏡構體4 1的第1鏡片支架4 1 1和燈 具外殻2 1間且被支撐在前述燈具外殼2 1內。且，在前 述反光鏡3，沿著外周緣設有凸緣部3 5，前述凸緣部 3 5沿著前述燈具外殼2 1的圓形開口緣2 5配置在內側 位置。 前述外側鏡片5，如第3圖所示，朝圓周方向被分割 的複數的分割鏡片，在此由被分割成3 6個的3 6片的分 割鏡片5 1所構成，全體如上述其頂角形成1 5 0度左右 偏平的圓錐面狀。前述3 6片的分割鏡片5 1係全爲同一 形狀，分別如第6圖的立體圖、第7 ( a )圖的平面圖、 第7 ( b ) 、（ c )的A A線、B B線的各剖面圖所示， 其頂角係形成約1 0度的三角形或台形、或扇型的透明樹 脂的板構件，細寬的內徑端部5 2係抵接在沿著前述聚光 鏡構體4 1的第3鏡片支架4 1 3的外周部的表面上，且 寬尺寸大的外徑端部5 3抵接在前述反光鏡3的凸緣部 3 5的狀態下，3 6片的分割鏡片5 1係朝圓周方向隔有 (請先閲讀背面之注意事項再填寫本頁) Ί— n 1. · _裝· 訂 線 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 565674 經濟部智慧財產局員工消费合作社印製 A7 _B7五、發明説明（9) 極微小的間隙地配列著。此間隙係爲了防止點亮無影燈時 的熱使分割鏡片5 1熱膨脹時使分割鏡片5 1朝圓周方向 衝突變形或破損而設的。因此，如第3圖所示，前述聚光 鏡構體4 1的第3鏡片支架4 1 3的光軸方向的位置，藉 由位置在反光鏡3的凸緣部3 5的光軸方向的位置的前方 ，使由3 6片的分割鏡片5 1所構成的前述外側鏡片5全 體成爲構成圓錐形狀。然而，設在分割鏡片5 1的底邊的 缺口 5 4係利用於當朝圓周方向配列該分割鏡片5 1時的 定位。 且，在朝向前述分割鏡片5 1的上側內面，作成在與 平面方向沿著外徑端部5 3的底邊平行的方向，也就是朝 外側鏡片5的接線方向延伸的直線狀，厚度方向的剖面形 狀係由外徑側爲傾斜面且內徑側爲垂直面的鋸齒狀的多數 的鏡片階段5 5呈並列狀態所形成。且，在朝向前述分割 鏡片5 1的下側的外面，係形成朝前述外側鏡片5的徑方 向，換言之前述分割鏡片5 1的長度方向延長，且朝與其 直交的寬方向平行地被並列配置的複數條的擴散階段5 6 。前述擴散階段5 6，在此係被作成構成朝寬方向的圓弧 面的半圓錐體形狀。由此，透過前述分割鏡片5 1的光， 係以內面側的前述鏡片階段5 5、及外面側的前述擴散階 段5 6分別被區分的矩形的各領域來區分各光束’且進行 各光束的屈折、擴散。 在此，前述鏡片階段5 5 ，相對應前述反光鏡3的中 心側領域3 2及周邊側領域3 3，成爲使供由這些領域被 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -12 ” (請先閲讀背面之注意事項再填寫本頁) -1— I 111 - 裝· 訂 經濟部智慧財產局員工消費合作社印製 565674 A7 ___B7___ 五、發明説明（化 反射來的光作爲預定的配光特性用的形狀、尺寸.，而依據 利用電腦的光線追跡的模疑來設計。特別是，在此實施例 的情況，面對前述區分反射面領域3 2 a〜3 2 d的內徑 側領域的鏡片階段5 5 a ，雖在沿著傾斜面的角度及並列 方向的寬尺寸不同的種種的鏡片階段時的混合狀態下被配 置，但面對前述周邊側領域3 3的外徑側領域的鏡片階段 5 5 b，係在傾斜面的角度及寬尺寸比較整齊的狀態下被 配置。且，前述外徑側領域的鏡片階段5 5 b的傾斜面的 角度係比內徑側領域的鏡片階段5 5 a的傾斜面的角度略 大地形成。而且，在此實施例中，在前述鏡片階段5 5的 垂直面5 7，形成：不透光的材料，例如鎢、鎳等的金屬 或經不透光性樹脂等的塗布或蒸著的光不透過膜，通過前 述垂直面5 7而使光不朝外部射出地構成。且，前述分割 鏡片5 1 ，在分割面，也就是相當三角形的斜邊部分的側 面5 8施有縐紋加工而形成光低透過面。然而，取代縐紋 加工，塗布或蒸著光透過率低材料也可以。因此，當將前 述的3 6片的分割鏡片5 1朝圓周方向配列且構成前述外 側鏡片5時，各分割鏡片5 1的各鏡片階段5 5成爲朝圓 周方向連結的狀態，外側鏡片5全體，成爲3 6角形的鏡 片階段5 5被同心配置的結構。 重疊在前述外側鏡片5的外側的前述擴散板6，如第 3圖所示，形成全體與前述外側鏡片5同樣形成圓錐面狀 ，且覆蓋前述外側鏡片5至前述反光鏡3的前面的全體的 形狀的1片的光透過性的樹脂板。且，在前述擴散板6的 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） _ _ ---------批衣----τ--、玎------0 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 565674 A7 B7 五、發明説明（1)| 表面，形成圖中未顯示的微細的擴散用的凹凸。在此實施 例中，在前述擴散板的表面施有縐紋加工’利用其縐紋可 獲得光的擴散性。而且，前述擴散板6係從前述外側鏡片 5的外面側被覆蓋，在其周緣部與前述反光鏡3的凸緣部 3 5 —起，利用圓環狀的周緣部2 4被固定在前述燈具外 殼2 1的開口緣2 5。且，藉由如此地使擴散板6固定在 燈具外殼2 1 ，成爲：前述分割鏡片5 1的外徑端部5 3 係被挾持在前述擴散板6及前述反光鏡3之間，內徑端部 5 2係被挾持在前述擴散板6及第3鏡片支架4 1 3之間 的狀態下被固定支撐。 以上的結構的無影燈，如第8圖所示的模式圖，點亮 第1、2電球427、428的話，從各電球射出的光中， 朝對於反光鏡3的光軸方向幾乎垂直的方向射出的光，係 分別利用第1聚光鏡4 1 4、第2聚光鏡4 1 5集光，且 在平行光束或接近平行光束的狀態下在光軸周圍方向呈 3 6 0度的方向被射出。這時，第1電球4 2 7因爲配置 在第1聚光鏡4 1 4的焦點位置，所以被射出的光朝對於 光軸方向幾乎垂直的方向被射出。一方面，第2電球 4 2 8因爲配置在從第2聚光鏡4 1 5的焦點位置稍微靠 光軸方向的前方位置，所以被射出的光朝對於垂直方向稍 微往反光鏡3後方的方向被射出。 而且，從第1聚光鏡4 1 4被射出的光，係被投射至 反光鏡3的中心側領域3 2的區分反射面領域3 2 a〜 3 2 d，而成爲朝向對於各區分反射面領域3 2 a〜 ---------^----Ί--1T------0 (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標隼（CNS ) A4規格（210X297公釐） -14- 經濟部智慧財產局員工消費合作社印製 565674 A7 _ _B7_ 五、發明説明（谗 3 2 d的9 0度的方向，也就是反光鏡3的光軸方向的前 方被反射，而射入至外側鏡片5。這時，各區分反射面領 域3 2 a〜3 2 d因爲被區分爲圓環狀，所以在各區分反 射面領域3 2 a〜3 2 d被反射的光係呈圓環狀的光束射 入外側鏡片5。且，從第2聚光鏡4 1 5射出的光，被投 射至反光鏡3的周邊側領域3 3 ，在此成爲朝向9 0度方 向，也就是從反光鏡3的光軸方向稍微往光軸中心方向被 反射，呈徑方向的寬尺寸較大的圓環狀的光束射入外側鏡 片5。 射入前述外側鏡片5的光，藉由外側鏡片5呈3 6角 形地配置，並且，各鏡片階段5 5的剖面作成朝外徑方向 傾斜的傾斜面的鋸齒狀，而由鏡片階段5 5屈折朝向光軸 中心的光束。這時，內徑側領域的鏡片階段5 5 a ，因爲 配列有鋸齒形狀的角度或尺寸不同的鏡片階段的結構，所 以由鏡片階段5 5 a屈折的光的方向分別有微小角度的不 同。且，外徑側領域鏡片階段5 5 b，因爲其傾斜角度比 內徑側領域的鏡片階段5 5 a的傾斜面的角度要大，所以 外側鏡片全體，係爲從外徑側領域被射出的光的屈折角度 要比從內徑側領域射出的光的屈折角度大。由此，透過外 側鏡片5的光，光束全體係成爲朝向光軸方向的預定領域 被屈折，一方面，由反光鏡3的區分反射面領域3 2 a〜 3 2 d被反射的複數圓環狀的光束，對於各外側鏡片5被 屈折後，係成爲在內徑側的領域及外徑側的領域相互重疊 的狀態下相互混合的狀態，而全體呈均一分布的狀態。一 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公楚:Ί :15二 ---------批衣----Ί--1T---^----^ (請先閲讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 565674 A7 B7 五、發明説明（1¾ 方面，由反光鏡3的周邊側領域3 3被反射的光，因爲外 側鏡片5的外徑側領域的鏡片階段5 5 b的形狀、尺寸爲 比較整齊的形狀，所以沿著光軸朝向幾乎同一方向，也就 是設置在通常使用無影燈的高度位置時朝向在手術台上的 預定徑尺寸領域內集光的方向屈折且從外側鏡片5被射出 〇 且，在前述實施例中，因爲在外側鏡片5的外面設有 朝寬方向作成縐紋型且幾乎朝徑方向延伸的多數條的擴散 階段5 6 ，所以從外側鏡片5射出的光，係利用擴散階段 5 6朝外側鏡片5的圓周方向擴散。另外，因爲使外側鏡 片5作成將3 6片的分割鏡片5 1朝圓周方向配列的結構 ，所以前述鏡片階段5 5形成3 6角形，與鏡片階段形成 連續的圓環狀的情況相比的話，對於各分割鏡片5 1的境 界部在前述鏡片階段5 5被屈折的光係在鄰接的分割鏡片 的相互間干涉其結果產生擴散性，在實現均一照明上更有 利。 而且，從前述外側鏡片5射出的各光，係利用擴散板 6被擴散。因此，如第9圖所示，在外側鏡片5的鏡片階 段5 5被屈折的光以各不同的角度被射出後，更利用擴散 板6被擴散且投射至手術台7上，來照射手術台7上的圖 外的患者的患部。因此，手術台7上的患者的患部係因爲 在來自多數的不同方向的光被擴散的狀態下被照射來進行 照明，所以由一個的光所產生的施術者的影子係藉由其他 的光被打消，且多數的光因爲呈擴散狀態所以成爲均一的 ---------批衣----：---1T------線 (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS ) A4規格（210X29*7公釐〉 -16· 經濟部智慧財產局員工消費合作社印製 565674 A7 B7 五、發明説明（1)1 照明，而成爲可以進行無影燈的較佳的照明。 如以上，本發明的無影燈，使從第1電球4 2 7及第 2電球4 2 8射出的光利用第1聚光鏡4 1 4及第2聚光 鏡4 1 5各形成平行或接近平行的光束後，對於反光鏡3 反射且射入外側鏡片5。因此，供獲得預定的配光特性用 的外側鏡片5的鏡片階段5 5的設計時，只要可獲得屈折 平行或接近平行光的目的的配光特性即可，使鏡片階段 5 5的設計變得容易。特別是，因爲由複數片的幾乎呈三 角形狀的分割鏡片5 1構成外側鏡片5，且配列這些複數 的分割鏡片5 1作成圓形狀，所以即使將形成在各分割鏡 片5 1的鏡片階段5 5作成直線狀的平面形狀的情況，外 側鏡片5全體係形成接近環狀的平面形狀的鏡片階段，而 可以使鏡片階段5 5的設計更容易。且，前述鏡片階段 5 5的剖面形狀，因爲是由垂直面及傾斜面所組成的鋸齒 狀，所以即使利用樹脂成型形成分割鏡片5 1的情況，模 型的製造容易，且利用樹脂成型可以容易地製造高精度的 分割鏡片。 且，設在外側鏡片5的鋸齒狀的外側鏡片5 5 ，因爲 利用設在垂直面5 7的光不透過膜遮蔽來自於反光鏡3的 光，所以無法透過垂直面，或在垂直面5 7被屈折的光無 法照射在手術台，而防止對於手術負責者的眩目。且，藉 由利用有色的材料形成光不透過膜，當從外側看外側鏡片 5時，也就是看無影燈1時，剛好利用該光不透過膜的色 使呈現無影燈的光照射面被著色地外觀，而有效地提高無 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -17 - IK--------批衣----Ί--1T-------^ (請先閲讀背面之注意事項再填寫本I.) 經濟部智慈財產局員工消f合作社印製 565674 A7 _B7_ 五、發明説明（仏 影燈的外表。而且，來自於反射鏡的光透過分割鏡片5 1 的側面5 8減低照射在手術台的光，而也可以從此面抑制 或防止對於手術負責者的眩目。 一方面，反光鏡3 ，特別是因爲使中心側領域的複數 區分反射面領域3 2 a〜3 2 d形成階段狀，所以可以縮 短反光鏡3的光軸方向的尺寸，減低厚度的尺寸。如前述 ，不使區分反射面領域3 2 a〜3 2 d形成階段狀的情況 時，如第5圖的鎖線所示，在徑方向確保必要的反射面領 域的話，反射鏡的厚度尺寸L 2，成爲比本實施例的反射 鏡的厚度尺寸L 1要大。且，對於周邊微領域3 3 ，因爲 使從第2電球4 2 8射出的光利用第2聚光鏡4 1 5從與 反光鏡3的光軸方向垂直的方向稍微朝向反光鏡3的後方 .射出，所以可以使周邊側領域3 3的光軸方向的位置朝反 射鏡的後方後退，且可以縮短此後退部分的反射鏡光軸方 向的尺寸，減低反光鏡3及無影燈1的厚度尺寸。 在此，當使分割鏡片5 1朝圓周方向配列而構成外側 鏡片5時，因爲利用分割鏡片5 1的熱膨脹吸收圓周方向 的尺寸變化，所以如第1 0 ( a )圖所示，雖在各分割鏡 片5 1的分割面間，也就是側面5 8間確保圓周方向的間 隙d ，但在前述實施例中，因爲使各分割鏡片5 1的側面 形成與反光鏡3的光軸平行的面，所以在反光鏡3被反射 的光中朝向與光軸平行的光會通過前述分割鏡片5 1的側 面間的間隙d，此爲漏光L X係有可能透過外側鏡片5被 射出。這種漏光L X因爲不會被外側鏡片5的鏡片階段 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） _ 18 _ I Ί— - - I I I-I -- I I - I T _ _ I I _ _ 良 (請先閲讀背面之注意事項再填寫本頁) 565674 A 7 B7 經濟部智慧財產局員工消費合作社印製 五、發明説明（化 5 5屈折，所以直接地照射在手術台7的上面，使外側鏡 片5由從呈放射狀分割的複數的分割鏡片5 1的各側面間 的漏光，如第第1 0 ( b )圖在手術台的上面的照明狀態 所不’由漏光L X在手術台7上面產生放射狀的明亮的照 明斑紋，或對於手術負責者成爲眩目光。 爲了消解這種問題，如第1 1 ( a ) 、（ b ) 、( c )圖的分割鏡片5 1的變形例的一部分的立體圖及其平面 圖及C C線剖面圖所示，使分割鏡片5 1的側面5 8對於 反光鏡3的光軸形成朝圓周方向傾斜的傾斜面5 8 a。也 就是說，使各分割鏡片5 1的兩側面形成各朝向同圓周方 向的傾斜面5 8 a。此傾斜面5 8 a的傾斜角度，也依據 反光鏡3的尺寸，但對於分割鏡片5 1的平面及垂直的垂 直面呈1〜2 ° 。這種情況，對於形成在分割鏡片5 1表 面的鏡片階段5 5的側面係不形成傾斜面，而是形成成型 時的模型的拔取斜度所要求的角度以內可能地平行於反光 鏡3的光軸的垂直面。且，在前述分割鏡片5 1的各傾斜 面58a ，實施光不朝特定方向反射的表面處理，例如： 與前述實施例同樣的縐紋加工等，利用縐紋使光呈擴散狀 態反射的粗面加工較佳。 因此，使此結構的分割鏡片朝圓周方向配列時，如第 1 2 ( a )圖所示，鄰接的分割鏡片5 1的各側面係成爲 使傾斜面5 8 a相互面對的狀態。因此，如第1 2 ( b ) 圖所示，在反光鏡3被反射的光中，光軸方向的光成爲無 法通過分割鏡片5 1的傾斜面5 8 a間的間隙d ，使光軸 ----------批衣-- (請先閲讀背面之注意事項再填寫本頁)565674 A7 B7 V. Description of the invention (1) [Application fields in the industry] The present invention relates to shadowless lamps, especially to medical lamps, and particularly 0 is a shadowless lamp arranged in an operating room for illuminating an operating table. [Previous technology] As is well known, the shadowless lamp is used to make shadows generated by a surgeon, such as a doctor or assistant, performing surgery on the affected part of a patient on the table, and illuminate the affected part with uniform brightness. . The conventional general shadowless lamp, as shown in Figure 13 (a), is formed by arranging a plurality of electric balls 1 2 on the surface of the lamp body 1 0 1, and by using each electric ball 1 The light emitted by 02 illuminates the affected part from different angles, so that the shadow generated by the light of one electric ball is cancelled by the light of the other ball to prevent the shadow generated by the operator. Moreover, other conventional shadowless lamps, as shown in the sectional view of FIG. 13 (b), are proposed: one or two electric balls 1 1 2 as light sources are arranged in the lamp housing 1 1 1 and a set is used. The light lens 1 1 3 amplifies the light beam from the electric ball 1 1 2, and then uses the outer lens 1 1 4 located in front of the lamp housing 1 1 1 to bend the magnified light beam and diffuses the light from the outer lens 1 1 4. In the state, light is emitted to irradiate the affected part. [Problems to be Solved by the Invention] However, in the shadowless lamp shown in Fig. 13 (a), in order to illuminate the operating table with uniform and predetermined color light, it is necessary to prepare a plurality of electric balls 102 having the same brightness and hue, and Use a ball that meets specifications. In particular, as long as the paper size is in accordance with the Chinese National Standard (CNS) A4 specification (210X297 mm) ----------- installed-(Please read the precautions on the back before filling this page) Order Printed by the Employees 'Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs -4- Printed by the Consumers' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 565674 A7 B7 V. Invention Description (2) Any of the electric ball damages or reaches the end of life, it is not easy to exchange immediately The ball with the same brightness and hue as other balls makes the maintenance of shadowless lamps a problem. In addition, there is also a problem that the power consumption for lighting a plurality of electric balls becomes large. In this regard, the shadowless lamp of FIG. 13 (b) can reduce the number of electric balls compared with the shadowless lamp of FIG. 13 (a), facilitate management of electric ball exchange and the like, and is also advantageous in reducing power consumption. However, in order to make the light emitted by the electric ball 1 1 2 enter the wide surface of the outer lens 1 1 4, it is necessary to use a light collecting lens 1 1 3 to amplify the light beam, and the light thus amplified is applied to the outer lens 1 1 4 It is difficult to uniformly enter the system. Therefore, it is difficult to design an outer lens for obtaining uniform light distribution characteristics in the radial direction and the circumferential direction. In addition, since the incident angles of the respective lights incident from the light-collecting lens 1 1 3 to the outer lens 1 1 4 are different, it is unavoidable to change the shape of the lens stage provided in the outer lens 1 1 4 for inflected incident light to be The complicated shape in the three-dimensional direction makes it difficult to design the lens stage, and it is not easy to manufacture the outer lens 1 1 4 by the resin molding method, and it is not easy to manufacture a shadowless lamp that matches the light distribution characteristics of the design. The problem. Therefore, an object of the present invention is to provide a shadowless lamp which makes it possible to design and manufacture a lens for obtaining a predetermined light distribution characteristic, in addition to the light source being configured with a relatively small number of balls. [Means to Solve the Problem] In order to solve the above-mentioned problem, the shadowless lamp of the present invention is made with: -------- 1¾ clothing ---- ^-1T ------ ^ (Please Please read the notes on the back before filling this page) This paper size is applicable to China National Standard (CNS) A4 specification (210X297mm) -5-Printed by the Intellectual Property Bureau Employee Consumer Cooperative of the Ministry of Economic Affairs 565674 A7 _____B7_ V. Description of the invention (3 ): A light source, a condenser that directs the light emitted from the electric ball to the circumference and emits a parallel beam, and a reflector that reflects the light emitted from the condenser at almost different directions around the light source, And a structure of an outer lens that is configured to refract light reflected from the mirror to a predetermined light distribution characteristic. According to the present invention, the light emitted from the electric ball and the condenser is reflected in a state where the reflector 3 is in a parallel beam, and when it is incident on the outer lens 5 and is bent, the outer lens 5 is designed to obtain a predetermined light distribution characteristic. When the lens stage is 5 to 5, as long as it can bend parallel and near-parallel light and obtain predetermined light distribution characteristics, the design of the lens stage is easy, and the shadowless lamp with predetermined light distribution characteristics can be easily designed and manufactured. In addition, the reflecting mirror is divided into a plurality of band-shaped plural divisional reflection areas each formed at different radial positions centered on the light source, and the division of the reflection surface area forms a stepped cross-sectional shape with respect to the optical axis direction of the mirror. Better. As a result, the width in the optical axis direction of the reflector can be reduced, and the thickness of the shadowless lamp can be reduced. On the other hand, the outer lens is formed in a state where a plurality of lenses that bend the light reflected by the reflector in the radial direction are arranged side by side in the radial direction, and the outer lens on the outer diameter side of the outer lens is formed. The stage has a structure that bends the light inward in the radial direction more than the lens stage. Thereby, it is possible to realize irradiation with excellent diffusivity, and obtain better light distribution characteristics of the shadowless lamp. In addition, the above-mentioned outer lens is composed of a plurality of divided lenses that are divided in a circumferential direction, and the aforementioned divided lenses are made of a flat plate close to a triangle. ------- 赛 ---- Ί--1Τ ------ ^ (Please read the precautions on the back before filling out this page) Printed by the Intellectual Property Bureau Staff Consumer Cooperatives of the Ministry of Economic Affairs 565674 A7 B7 5 2. Description of the Invention The (4) -shaped transparent member is formed, and the lens stage having a zigzag cross section in the radial direction has a structure in which the lens stages are linearly arranged along the wiring direction and are arranged side by side in the radial direction. With this structure, even when the lens stage formed in each of the divided lenses is a linear flat shape, the lens stage is formed into a ring shape as a whole, and the design of the lens stage can be made easier. In addition, the lens stages of the aforementioned split lenses have a flat shape and a linear shape arranged side by side, and the cross-sectional shape is also a zigzag consisting of a vertical plane and an inclined plane. Therefore, even when the split lens is formed by using possible molding, The manufacturing system is easy, and it is easy to manufacture high-precision split lenses by resin molding. Further, the split surface of the split lens is configured as an inclined surface that is inclined in the circumferential direction with respect to the optical axis direction of the reflector. In this case, it is preferable that the surface of the divided surface is rough-processed. Accordingly, it is possible to prevent the light reflected from the mirror from leaking through the gap between the divided lenses. In addition, by forming a diffusion step in which light is diffused in a direction perpendicular to the radial direction on the surface of the outer lens and the surface on which the lens step is formed, a more uniform irradiation can be performed. In this case, the light source and the condenser lens are formed in such a manner that two light sources and a condenser lens are arranged side by side toward the optical axis direction of the reflector, and the first light source and the first condenser lens system near the center side of the reflector are provided for the reflection. The optical axis direction of the mirror emits light in an almost vertical direction to a field on the center side of the mirror, and the second light source and the second condenser lens are directed more toward the center of the mirror than are perpendicular to the optical axis direction of the mirror. The structure that emits light in the side tilt direction and in the area around the peripheral side of the reflector, in particular, the position of the optical axis in the area of the peripheral reflecting surface can be reflected toward the surface. This paper applies the Chinese National Standard (CNS) A4 specification ( 21〇Χ: 297 mm) ---------- installation ---- Ί--order --- ^ ------- line (please read the precautions on the back before filling in this Page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 565674 A7 _B7 V. Description of the invention (5) The mirror moves backward, and the size of the optical axis direction of the reflecting mirror is shortened, which can reduce the thickness of the mirror and the shadowless lamp. size. [Example] The shadowless lamp of the present invention will be described with reference to the drawings. Fig. 1 is an external view of a shadowless lamp according to the present invention, Fig. 2 is a cross-sectional view showing its center position, and Fig. 3 is an exploded perspective view showing a rough structure of each part. For these figures, the housing part 2 of the shadowless lamp 1 has a circular umbrella-shaped lamp housing 2 1, and a cylindrical seat 2 2 is erected at the center of the upper surface of the lamp housing 21. The base 22 is supported by a support arm 2 3 indicated by a lock line in the first figure, and is electrically connected to an external power source by an electric wire inserted through the base 22, and a structure of an electric ball described later is lighted. A reflector 3 having a circular umbrella shape is also housed in the lamp housing 21, and a light source unit 4 is arranged at a center position on the inner surface side of the reflector 3. The light source unit 4 has a structure including two electric balls and two condenser lenses arranged in a row along the optical axis direction (the up-down direction in FIG. 2) of the reflecting mirror 3 described later in detail. Further, in the front position of the reflecting mirror 3, a plurality of split lenses 51 are arranged with an outer lens 5 which is assembled in a conical shape with a large apex angle and a nearly flat shape as a whole. The diffuser plate 6 has a conical surface shape, and the outer lens 5 and the diffuser plate 6 are fixed to the peripheral edge of the circular opening edge 25 of the lamp housing 21 with a peripheral portion 24 formed in a ring shape. The light source unit 4 includes a condenser structure 41 and a light source structure 42 as shown in an exploded perspective view of a cut-away portion in FIG. 4. The paper size of the aforementioned condenser lens is in accordance with the Chinese National Standard (CNS) A4 specification (210X297 mm) 7〇1 '" -------- 丨 Installation ---- ^-Order ------- (Please read the precautions on the back before filling this page) 565674 A7 B7 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (6) Structure 4 1 with the first lens holder forming a circular plate shape 4 1. The second lens holder 412 and the third lens holder 413 formed in a ring shape hold the first condenser lens 4 1 formed in a ring shape between the first lens holder 4 1 1 and the second lens holder 4 1 2 4. Between the second lens holder 4 1 2 and the third lens holder 4 1 3, hold the second condensing lens 4 1 5 which is also formed into a ring shape. At three positions in the circumferential direction, from the first lens holder 4 1 1 The third lens holder 4 1 3 is inserted through the connecting rod 4 1 6 in the direction of the barrel axis, and the two ends of the first lens holder 4 1 7 are connected with the nut 4 1 7 to make the first lens holder 4 1 1 to 4 1 3 and the first and second condensers 4 1 4 and 4 1 5 are integrated. The condenser lens structure 41 passes through a central hole 3 1 provided in a central portion of the reflector 3, and the first lens holder 4 1 1 is fixedly supported on a center area of the inner surface of the lamp housing 21. . Here, the first and second condenser lenses 4 1 4 and 4 1 5 can be seen by referring to FIG. 2, and the cross-sectional shape along the radial direction of each of the condenser lenses 4 1 4 and 4 1 5 is designed to make the ring of the condenser lens The center of the shape is the cross-sectional shape of the focal point. In addition, the light source structure 4 2 that is built-in and supported in the condenser lens structure 41 is provided with two first and second support plates 4 2 2 and 4 2 on the lower side of the circular substrate 4 2 1. The 3 and 3 pillars 4 2 4 are composed of a grid body, and the first electric ball seat 4 2 5 is supported here. The aforementioned first support plate 4 2 2 and the second electric ball seat 4 2 6 are supported in the grid body. The aforementioned second support plate 423. The first and second electric ball holders 425 and 426 support a first electric ball 4 2 7 and a second electric ball 4 2 8 made of a halogen lamp. In addition, the light source structure 4 2 is the first from the aforementioned condenser structure 4 1 (please read the precautions on the back before filling out this page)-binding and binding. The paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -9-565674 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 _______ B7_ V. Description of the invention (7) The ring hole of the lens holder 4 1 1 is inserted into the inside, so that the aforementioned circular substrate 4 2 1 After the first lens holder 4 1 1 is plugged and arranged inside the ring, the first lens holder 4 1 1 is fixed with screws screwed into the screw holes 4 1 1 a and 4 2 1 a. As a result, the light source unit 4 is configured, and the light source unit 4 thus assembled, as can be seen from FIG. 2, the position of the first electric ball 4 2 7 is at the focus of the first condenser lens 4 1 4 and the second electric ball 4 2 The 8 series is disposed at a position shifted from the focal point of the second condenser lens 4 1 5 along the cylinder axis direction, that is, the optical axis direction of the reflector 3 is only toward the second support plate 4 2 3 side. On the one hand, the above-mentioned reflector 3 is a metal plate formed by forming a light reflecting surface on the surface and forming an umbrella shape, as shown in FIG. 5, an enlarged cross-sectional view of the right half including the optical axis, A center hole 3 1 is opened in a center portion including the optical axis, and the light source portion 4 is penetrated. Further, among the areas of the reflecting surface of the reflector 3, the center-side area 32 from the center position to a length of approximately 3/4 in the radial direction is divided into a plurality of annular area areas, and Each of the divided surface regions is formed by bending the radial cross-sectional shape in stages. Furthermore, among the above-mentioned divided surface areas, each of the surface areas inclined from the inner diameter side along the outer diameter side toward the front of the reflector, here, the four surface areas constitute the distinguished reflective surface areas 3 2 a ~ 3 2 d is configured to reflect light emitted from the first electric ball 4 2 7 and the first condenser lens 4 1 4 toward the front of the reflector 3 as described later. The aforementioned four distinguished reflective surface areas 3 2 a to 3 2 d are formed by a part of a conical surface inclined at an angle of 5 ° to the optical axis 45 of the aforementioned reflector 3. And, the paper size that is located in the center side area 3 2 of the reflector 3 above is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) _ 1〇- (Please read the precautions on the back before filling this page) 1—-J--. Binding · Order-line 565674 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 _B7 _V. Description of the Invention (8) The outer side is the peripheral side area 3 3, which constitutes a peripheral reflective surface area. A part of the conical surface inclined at a predetermined angle to the optical axis of the reflector 3, for example, an angle of 45 degrees. However, the shape of this reflector 3 is such that a conical surface inclined at an angle of 45 degrees shown by a lock line in the same figure is divided toward the optical axis direction, and each divided surface is moved toward the optical axis direction so that The structure of the plane-to-plane connection of the divided planes is the same, so that the length L 2 in the optical axis direction of the original conical surface can be made a short optical axis length L 1. In addition, the reflector 3 is held between the first lens holder 4 1 1 and the lamp housing 21 of the condenser lens structure 41 with respect to the opening edge portion 3 4 of the center hole 31, and is supported by the lamp housing. 2 1 within. The reflector 3 is provided with a flange portion 3 5 along an outer peripheral edge thereof, and the flange portion 35 is disposed at an inner position along the circular opening edge 25 of the lamp housing 21. As shown in FIG. 3, the outer lens 5 is a plurality of divided lenses that are divided in a circumferential direction. Here, the outer lenses 5 are composed of 36 divided lenses 36, which are divided into 36 pieces. It forms a flat conical surface around 150 degrees. The aforementioned 3 to 6 split lenses 51 are all in the same shape, such as the perspective view of FIG. 6, the plan view of FIG. 7 (a), the cross sections of lines AA and BB of lines 7 (b) and (c), respectively. As shown in the figure, the apex angle is a plate member made of transparent resin of a triangle, a mesa shape, or a fan shape of about 10 degrees, and the narrow inner diameter end portion 5 2 is in contact with the condensing lens structure 41. The third lens holder 4 1 3 has a wide outer diameter end portion 5 3 on the surface of the outer peripheral portion, and abuts against the flange portion 3 5 of the reflector 3, and 3 to 6 divided lenses 5 1 It is separated in the circumferential direction (please read the precautions on the back before filling in this page) Ί— n 1. · _ Binding · Binding This paper size is applicable to China National Standard (CNS) A4 (210X297 mm) 565674 Ministry of Economic Affairs Printed by A7 _B7 of the Intellectual Property Bureau's Consumer Cooperatives V. Invention Description (9) They are arranged in a very small gap. This gap is provided to prevent the split lens 51 from being deformed or damaged in a circumferential direction by the thermal expansion of the split lens 51 when the shadowless lamp is lit. Therefore, as shown in FIG. 3, the position of the third lens holder 4 1 3 of the condenser structure 41 1 in the optical axis direction is determined by the position in the optical axis direction of the flange portion 35 of the reflector 3. On the front side, the entire outer lens 5 composed of 36 divided lenses 51 is formed into a conical shape. However, the notch 5 4 provided on the bottom side of the split lens 51 is used for positioning when the split lens 51 is arranged in the circumferential direction. In addition, the inner surface of the upper side facing the split lens 51 is formed in a direction parallel to the planar direction along the bottom edge of the outer diameter end portion 53, that is, a straight line extending in the wiring direction of the outer lens 5 and a thickness direction. The cross-sectional shape of is formed by a plurality of lens stages 55 having a sawtooth shape in which the outer diameter side is an inclined surface and the inner diameter side is a vertical surface in a parallel state. In addition, a radial direction toward the outer lens 5 is formed on the outer surface facing the lower side of the split lens 51, in other words, the longitudinal direction of the split lens 51 is extended, and is arranged side by side in a width direction orthogonal to the split lens 51. A plurality of diffusion stages 5 6. The above-mentioned diffusion stages 56 and 6 are here formed into a semi-conical shape constituting a circular arc surface in a wide direction. As a result, the light transmitted through the split lens 51 is distinguished from each other by the respective rectangular areas where the lens stage 5 5 on the inner side and the diffusion stage 56 on the outer side are distinguished, and the Inflection, spread. Here, the aforementioned lens stage 5 5 corresponds to the central side area 3 2 and the peripheral side area 3 3 of the aforementioned reflector 3, so that these areas are adapted to the Chinese National Standard (CNS) A4 specification (210X 297) by this paper standard. (Mm) -12 "(Please read the notes on the back before filling out this page) -1— I 111-Binding and printing printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 565674 A7 ___B7___ 5. Description of the invention Light is designed as a predetermined shape and size for light distribution characteristics, and is designed based on the use of computer ray tracing. In particular, in the case of this embodiment, facing the aforementioned area of distinguishing reflective surfaces 3 2 a ~ 3 2 The lens stage 5 5 a in the inner diameter side area of d is arranged in a mixed state when various lens stages having different widths along the angle of the inclined plane and the side-by-side direction, but face the peripheral side area 3 3 The lens stage 5 5 b in the outer diameter side region is arranged in a state where the angle of the inclined surface and the wide size are relatively neat. In addition, the angle of the inclined plane in the lens stage 5 5 b in the outer diameter region is within the ratio. Trail side The angle of the inclined surface of the lens stage 5 5 a in the field is formed slightly larger. Also, in this embodiment, the vertical plane 5 7 of the aforementioned lens stage 5 5 is formed: an opaque material such as tungsten, nickel, or the like A metal or light-transmissive film coated or vapor-deposited with an opaque resin or the like is configured to prevent light from being emitted to the outside through the vertical surface 57. The split lens 5 1 is on the split surface, that is, The sides 5 8 of the relatively beveled portion of the triangle are subjected to crepe processing to form a low-light transmission surface. However, instead of crepe processing, it is also possible to coat or vaporize a material with low light transmittance. Therefore, when the aforementioned 36 pieces When the split lenses 5 1 are arranged in the circumferential direction and the aforementioned outer lens 5 is configured, each of the lens stages 5 5 of each split lens 5 1 is connected to the circumferential direction, and the entire outer lens 5 becomes a 36-angle lens stage 5 5. The structure arranged concentrically. As shown in FIG. 3, the diffusion plate 6 superposed on the outside of the outside lens 5 is formed in a conical shape as a whole as the outside lens 5, and covers the outside lens 5 to the reflection lens. One light-transmitting resin plate of the entire shape in front of the mirror 3. The paper size of the diffuser plate 6 applies the Chinese National Standard (CNS) A4 specification (210X297 mm) _ _ ---- ----- Batch clothes ---- τ--, 玎 ------ 0 (Please read the precautions on the back before filling out this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 565674 A7 B7 5 Explanation of the invention (1) | The surface is formed with fine unevenness for diffusion which is not shown in the figure. In this embodiment, the surface of the aforementioned diffusion plate is subjected to a crepe process. . Further, the diffuser plate 6 is covered from the outer side of the outer lens 5 and is fixed to the lamp by a peripheral portion 24 of a circular shape from a peripheral portion thereof to the flange portion 3 5 of the reflector 3. The opening edge 2 5 of the housing 2 1. In addition, by fixing the diffuser plate 6 to the lamp housing 2 1 in this way, the outer diameter end portion 5 3 of the split lens 51 is held between the diffuser plate 6 and the reflector 3 and the inner diameter end thereof. The portion 5 2 is fixedly supported while being held between the diffusion plate 6 and the third lens holder 4 1 3. The shadowless lamp having the above structure lights up the first and second electric balls 427 and 428 as shown in the schematic diagram in FIG. 8, and the light emitted from each electric ball is emitted in a direction almost perpendicular to the optical axis direction of the reflector 3. The light is collected by the first condenser 4 1 4 and the second condenser 4 15 respectively, and is emitted in a direction of 360 degrees around the optical axis in a state of a parallel beam or a nearly parallel beam. At this time, since the first electric ball 4 2 7 is arranged at the focal position of the first condenser lens 4 1 4, the emitted light is emitted in a direction almost perpendicular to the optical axis direction. On the other hand, since the second electric ball 4 2 8 is arranged slightly forward of the optical axis direction from the focal position of the second condenser lens 4 1 5, the emitted light is emitted in a direction slightly behind the reflector 3 in the vertical direction. . In addition, the light emitted from the first condenser 4 1 4 is projected onto the center reflection area 3 2 of the reflector 3 3 2 a to 3 2 d, and is directed toward the respective reflection surface areas 3 2 a ~ --------- ^ ---- Ί--1T ------ 0 (Please read the precautions on the back before filling this page) This paper size applies to the Chinese national standard 隼 ( CNS) A4 specification (210X297 mm) -14- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 565674 A7 _ _B7_ V. Description of the invention (谗 3 2 d at 90 degrees, which is the optical axis of the reflector 3 It is reflected in the forward direction and enters the outer lens 5. At this time, since the reflective surface areas 3 2 a to 3 2 d are divided into circular shapes, the reflective surface areas 3 2 a to 3 2 d are separated. The reflected light is a ring-shaped light beam that enters the outer lens 5. In addition, the light emitted from the second condenser lens 4 1 5 is projected onto the peripheral side area 3 3 of the reflector 3, and here it faces 90 degrees. The direction, that is, the light beam from the direction of the optical axis of the reflector 3 is slightly reflected toward the center of the optical axis. Side lens 5. The light incident on the outer lens 5 is arranged in a 36-angle shape by the outer lens 5, and the cross section of each lens stage 55 is formed into a jagged shape of an inclined surface inclined toward the outer diameter direction. Phase 5 5 refractions the light beam toward the center of the optical axis. At this time, the lens phase 5 5 a in the inner diameter side field is arranged with a lens stage structure with different angles or sizes, so the light refracted by the lens phase 5 5 a There are slight differences in the directions of the lenses. Also, the angle of the inclined surface of the outer diameter side lens stage 5 5 b is larger than the angle of the inclined surface of the inner diameter side lens stage 5 5 a. The inflection angle of the light emitted from the outer diameter side region is larger than the inflection angle of the light emitted from the inner diameter side region. As a result, the entire system of light transmitted through the outer lens 5 becomes a predetermined region directed toward the optical axis. Inflection, on the one hand, the plurality of annular light beams reflected by the reflecting surface area 3 2 a to 3 2 d of the reflector 3 are inflected to the outer diameter area for each outer lens 5. The areas on the outer diameter side are mixed with each other in a state where they overlap with each other, and the whole is uniformly distributed. A paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 Gongchu: Ί: 15 二 ----) ----- Batch of clothes ---- Ί--1T --- ^ ---- ^ (Please read the precautions on the back before filling this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 565674 A7 B7 V. Description of the invention (1¾ aspect, the light reflected by the peripheral side area 3 3 of the reflector 3 is because the shape and size of the lens stage 5 5 b in the outer side area of the outer lens 5 are relatively neat shapes, so The light axis is oriented in almost the same direction, that is, when set at a height position where a shadowless lamp is usually used, it is bent toward the direction of light collection in a predetermined diameter size area on the operating table and is emitted from the outer lens 5. In the foregoing embodiment, Since a plurality of diffusion stages 5 6 are formed on the outside of the outer lens 5 in a crepe shape extending in a wide direction and extend almost in the radial direction, the light emitted from the outer lens 5 uses the diffusion stage 56 to face the outer lens. 5 in the circumferential direction. In addition, since the outer lens 5 has a structure in which 36 divided lenses 51 are arranged in the circumferential direction, the aforementioned lens stage 55 is formed in a 36-angle shape, as compared with the case where the lens stage is formed into a continuous ring shape. For the boundary part of each split lens 51, the light that is refracted at the aforementioned lens stage 55 is interfered with each other between adjacent split lenses, and as a result, diffusivity is generated, which is more advantageous in achieving uniform illumination. Each light emitted from the outer lens 5 is diffused by the diffusion plate 6. Therefore, as shown in FIG. 9, after the inflected light at the lens stage 55 of the outer lens 5 is emitted at different angles, the diffuser plate 6 is diffused and projected onto the operating table 7 to illuminate the operating table. The affected part of the patient is not shown in Figure 7 above. Therefore, since the affected part of the patient on the operating table 7 is irradiated for illumination in a state where light from a plurality of different directions is diffused, the shadow of the operator generated by one light is applied by the other light. Cancellation, and most of the light is uniform because it is in a diffused state --------- batch of clothes ----: --- 1T ------ line (Please read the precautions on the back before (Fill in this page) This paper size is in accordance with Chinese National Standard (CNS) A4 specifications (210X29 * 7mm> -16 · Printed by the Intellectual Property Bureau Staff Consumer Cooperatives of the Ministry of Economic Affairs 565674 A7 B7 V. Description of the invention (1) 1 Lighting, and As described above, the shadowless lamp of the present invention allows the light emitted from the first electric ball 4 2 7 and the second electric ball 4 2 8 to use the first condenser 4 1 4 and the second condenser 4 1 5. After forming parallel or near-parallel light beams, they are reflected by the reflector 3 and incident on the outer lens 5. Therefore, when designing the lens stage 5 5 of the outer lens 5 for obtaining a predetermined light distribution characteristic, as long as the inflection parallel is obtained Or the light distribution characteristics of the purpose of close to parallel light, The design of the lens stage 5 5 becomes easy. In particular, since the outer lens 5 is constituted by a plurality of almost triangular divided lenses 5 1 and the plural divided lenses 5 1 are arranged in a circular shape, even if formed in When the lens stage 5 5 of each divided lens 51 is formed into a linear flat shape, the entire system of the outer lens 5 forms a lens stage that is close to a circular planar shape, and the design of the lens stage 55 can be made easier. The cross-sectional shape of the lens stage 5 5 is a zigzag shape composed of a vertical plane and an inclined plane. Therefore, even if the split lens 5 1 is formed by resin molding, the model is easy to manufacture, and high precision can be easily manufactured by resin molding. In addition, the zigzag-shaped outer lens 5 5 provided on the outer lens 5 cannot transmit light through the vertical surface because the light provided on the vertical surface 57 is not transmitted through the film to shield the light from the reflector 3, or The refracted light of the vertical plane 57 cannot illuminate the operating table, preventing glare to the person in charge of the operation. Furthermore, it is formed by using colored materials Impervious film, when looking at the outer lens 5 from the outside, that is, when looking at the shadowless lamp 1, the color of the light-impermeable film is used to make the appearance of the light-irradiated surface of the shadowless lamp colored, thereby effectively improving the paper size China National Standard (CNS) A4 specification (210X297 mm) -17-IK -------- batch clothes ---- Ί--1T ------- ^ (Please read the note on the back first Please fill in this item again. I.) Printed by the staff of the Intellectual Property Office of the Ministry of Economic Affairs and printed by the cooperative 565674 A7 _B7_ V. Description of the invention (Appearance of the shadow lamp. In addition, the light from the reflector passes through the side 5 of the split lens 5 1 The light on the operating table is reduced, and the glare to the person in charge of the operation can be suppressed or prevented from this side. On the one hand, the reflector 3, in particular, is formed into a stepped shape by plurally dividing the center-side area of the reflecting surface area 3 2 a to 3 2 d. Therefore, the size of the reflector 3 in the optical axis direction can be shortened and the thickness can be reduced. As described above, if the reflective surface areas 3 2 a to 3 2 d are not divided into stages, as shown by the lock line in FIG. 5, if the necessary reflective surface area is secured in the radial direction, the thickness dimension L 2 of the mirror Is larger than the thickness dimension L 1 of the mirror of this embodiment. And, for the peripheral micro-field 3 3, the light emitted from the second electric ball 4 2 8 is used to use the second condenser lens 4 1 5 slightly from the direction perpendicular to the optical axis direction of the reflector 3 toward the rear of the reflector 3, Therefore, the position in the optical axis direction of the peripheral side area 33 can be set back toward the rear of the reflector, and the size of the set in the optical axis direction of the setback portion can be shortened to reduce the thickness of the reflector 3 and the shadowless lamp 1. Here, when the split lenses 51 are arranged in the circumferential direction to form the outer lens 5, the thermal expansion of the split lenses 51 is used to absorb the dimensional change in the circumferential direction. Therefore, as shown in FIG. 10 (a), A gap d in the circumferential direction is ensured between the division surfaces of the division lenses 51, that is, between the side surfaces 58. However, in the foregoing embodiment, since the side surfaces of the division lenses 51 are formed into a plane parallel to the optical axis of the reflector 3, Therefore, among the light reflected by the reflector 3, light that is parallel to the optical axis passes through the gap d between the side surfaces of the split lens 51, which is because the light leakage LX may be emitted through the outer lens 5. This type of light leakage LX will not be affected by the lens stage of the outer lens 5. The paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) _ 18 _ I Ί—--II II-II-IT _ _ II _ _ Good (please read the precautions on the back before filling this page) 565674 A 7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (Chemical 55 inflection, so it directly shines on the operating table 7 The outer lens 5 is made to leak light from each side surface of the plurality of split lenses 51 that are radially divided, as shown in Fig. 10 (b), the lighting state on the upper surface of the operating table is not caused by the light leakage LX in the operation. Radiant bright streaks are generated on the table 7 or become glare to the person in charge of the operation. In order to eliminate this problem, the deformation of the split lens 51 in Fig. 1 (a), (b), (c) As shown in a perspective view of a part of the example, a plan view, and a CC sectional view, the side surface 5 8 of the split lens 5 1 is formed as an inclined surface 5 8 a inclined in the circumferential direction with respect to the optical axis of the reflector 3. The two sides of the split lens 51 are formed in different directions. The inclined surface 5 8 a in the same circumferential direction. The inclination angle of this inclined surface 5 8 a also depends on the size of the reflector 3, but for the plane of the split lens 5 1 and the vertical vertical plane, it is 1 to 2 °. The side surface of the lens stage 5 5 formed on the surface of the split lens 51 does not form an inclined surface, but may be parallel to the perpendicularity of the optical axis of the mirror 3 within an angle required to form the extraction slope of the model during molding. In addition, each inclined surface 58a of the split lens 51 is subjected to a surface treatment in which light is not reflected in a specific direction, for example, the same crepe processing as in the previous embodiment, and the light is reflected by the crepe in a diffused state. The rough surface processing is better. Therefore, when the divided lenses of this structure are arranged in the circumferential direction, as shown in FIG. 12 (a), each side surface of the adjacent divided lenses 51 is formed so that the inclined surfaces 5 8 a face each other. Therefore, as shown in FIG. 12 (b), among the light reflected by the reflector 3, the light in the optical axis direction cannot pass through the gap d between the inclined surfaces 5 8a of the split lens 51, Make the optical axis ---------- batch of clothes-(please read first Note to fill out the back of this page)
、1T 線 本紙張尺度適用中國國家標準（CNS ) Α4規格（210Χ297公釐） -19- 經濟部智慧財產局員工消費合作社印製 565674 A7 ____B7 五、發明説明（1> 方向的光不會以漏光從外側鏡片5射出。然而，一部分的 光雖進入傾斜面5 8 a間的間隙內，但因爲在各分割鏡片 5 1的傾斜面5 8 a —邊被反射、屈折一邊衰減，所以幾 乎不會以漏光被射出。且，這種情況藉由粗面加工處理傾 斜面5 8 a ，可以有效地防止朝特定方向的光反射，使由 該反射光的漏光幾乎爲零。且，沿著間隙的傾斜方向的光 ，因爲利用在分割鏡片5 1的傾斜面間的間隙內呈突出位 置的鏡片階段5 5被阻止，所以無法通過間隙，而不會以 漏光被射出。 而且，因爲防止從分割鏡片5 1的側面間的間隙d的 漏光，如第1 2 ( c )圖所示，雖可考慮使側面5 8 b形 成階段狀，所以在此結構中如同圖，在與光軸垂直的面的 光的反射變得明顯，與此領域的光透過率比其他的領域低 .. ... . 下的第1 0 ( b )圖所示的狀況相反，有可能在手術台7 的上面產生放射狀的較暗的照明斑紋，並不好。 在此，在前述實施例中，雖3 6分割外側鏡片形成分 割鏡片，但可依據需要增減分割數。且，對於形成分割鏡 片的鏡片階段及擴散階段的形狀、尺寸，可對所要求的無 影燈的照射領域作種種的變更。而且，對於構成反射鏡的 區分反射面領域的數量及尺寸等也可以適當地變更。 〔發明之效果〕 如以上說明的本發明的無影燈，因爲使從光源射出的 光利用反射鏡朝向圓周方向呈平行光束射出，再使從反射 ---------辦衣----Ί--1T------^ (請先閱讀背面之注意事項再填寫本頁) 本纸張尺度適用中國國家標準（CNS ) A4規格（210X29?公釐） -20- 565674 A7 B7 五、發明説明（1¾ (請先閱讀背面之注意事項再填寫本頁) 鏡射出的光在反射鏡的以光源爲中心的不同半徑位置各朝 向幾乎同一方向反射，從反射鏡反射出來的光利用外側鏡 片被屈折而成爲預定的配光特性，所以當爲了獲得預定的 配光特性的外側鏡片的鏡片階段的設計時，只要獲得屈折 平行或接近平行的光爲目的的配光特性即可，使鏡片階段 的設計變得容易，而可以容易設計、製造目的的配光特性 的無影燈。 且，反射鏡，在各以前述光源爲中心的不同半徑位置 被分割成呈帶狀的複數區分反射面領域，且藉由前述區分 反射面領域對於前述反射光的光軸方向形成階段狀的剖面 形狀，可以減低反射鏡的光軸方向的寬尺寸，並可以薄化 無影燈的厚度。 經濟部智慧財產局員工消費合作社印製 而且，對於外側鏡片，外徑側的鏡片階段，藉由從內 徑側的鏡片階段朝向徑方向的內側屈折光地構成，可以實 現擴散性佳的照明，而可以獲得無影燈的較佳的配光特性 、且，在外側鏡片，藉由朝與徑方向垂直的方向設置擴散 光的擴散階段，可以實現更均一的照射。而且，藉由使外 側鏡片朝圓周方向被分割的複數的分割鏡片所構成，單純 化鏡片階段的形狀，使鏡片階段的設計更容易，並且，可 以容易地進行其製造。且，這種情況，藉由使分割鏡片的 分割面對於反射鏡的光軸方向呈朝圓周方向傾斜的傾斜面 地構成，在反射鏡被反射的光中，光軸方向的光不會通過 分割鏡片的側面間的間隙而成爲漏光，可以防止照明斑紋 。而且，藉由粗面加工處理分割面，防止朝特定方向的光 -21 - 本紙張尺度適用中.國國家標準（CNS ) A4規格（210X 297公釐） 經濟部智慧財產局員工消費合作社印製 565674 A7 ， _ B7_ 五、發明説明（1灸 反射，而可以抑制由進入間隙內的光所產生的照明斑紋。 〔圖面之簡單說明〕 第1圖係爲有關本發明的無影燈的一實施例的外觀立 體圖。 第2圖係顯示含有第1圖的無影燈的光軸的縱剖面圖 0 第3圖係顯示第1圖的無影燈的部分分解立體圖。 第4圖係顯示構成光源部的聚光鏡構體及光源構體的 槪略結構的部分剖面立體圖。 第5圖係顯示反射鏡的部分放大剖面圖。 第6圖係顯示分割鏡的立體圖。 第7圖係顯示分割鏡的平面圖及其之A A線、B B線 的各斷面圖。 第8圖係顯示從光源部射出的光的反射屈折狀態的模 式圖。 第9圖係顯示利用無影燈照射手術台上的患者的患部 的狀態的圖。 第1 0圖係顯示在手術台上產生照射斑紋狀態的說明 圖。 第1 1圖係顯示將分割鏡的側面作成傾斜面的變形例 的要部的立體圖及平面圖及c C線剖面圖。 第1 2圖係顯示供說明變形例的作用的剖面圖。 第1 3圖係顯示習知的無影燈的一例的外觀圖及他例 ---------^----^--1T------^ (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS ) A4規格（2丨〇'〆297公釐） -22- 經濟部智慧財產局員工消費合作社印製 565674 A7 B7 五、發明説明（2b 的剖面圖。 〔圖號說明〕 1 無影燈 2 外殼部 3 反射鏡 4 光源部 5 外側鏡 6 擴散板 7 手術台 2 1 燈具外殼 2 2 座 2 3 支撐臂 2 4 周緣部 2 5 周緣部 3 1 中心孔 3 3 周邊側領域 3 4 開口緣部 32 中心側領域 3 2 a〜3 2 d 區分反射面領域 3 5 凸緣部 41 聚光鏡構體 4 2 光源構體 4 11 第1鏡片支架 本紙張尺度適用中國國家標準（CNS ) A4規格（210 X 297公釐） -23 - ----------批衣----Ί--1T------^ (請先閱讀背面之注意事項再填寫本頁) 565674 A7 B7 五、發明説明（2) 4 1 1 a 螺絲 孔 4 1 2 第 2鏡 片支架 4 1 3 第 3鏡 片支架 4 1 4 第 1聚 光 鏡 4 1 5 第 2聚 光 鏡 4 1 6 締 結桿 4 1 7 螺 帽 4 2 1 圓 形基 板 4 2 1 ； a 螺絲 孔 4 2 2 第 1支 撐 板 4 2 3 第 2支 撐 板 4 2 5 第 1電 球 座 4 2 6 第 2電 球 座 4 2 7 第 1電 球 4 2 8 第 2電 球 5 1 分割 鏡 5 2 內徑 端部 (請先閲讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 5 3 外徑端部 5 4 缺口 58a 傾斜面 5 8 b 側面 5 5 鏡片階段 5 5 a 內徑側領域鏡片階段 55b 外徑側領域鏡片階段 本紙張尺度適用中國國家標準（CNS ) A4規格（210 X 297公釐） -24- 565674 A7 B7 五、發明説明（2灸 5 6 擴 散 階 段 5 7 鏡 片 階 段 的 5 8 分 割 鏡 的 側 1 0 1 燈 具 本 體 1 0 2 電 球 1 1 1 燈 具 外 殻 1 1 2 電 球 1 1 3 集 光 鏡 片 1 1 4 外 側 鏡 片 -----------裝----Ί--訂------.線 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -25-1. The paper size of the 1T line is applicable to the Chinese National Standard (CNS) A4 specification (210 × 297 mm). -19- Printed by the Intellectual Property Bureau Employee Consumer Cooperatives of the Ministry of Economic Affairs 565674 A7 ____B7 V. Description of the invention (1 > direction light will not leak It is emitted from the outer lens 5. However, although a part of the light enters the gap between the inclined surfaces 5 8 a, it is hardly reflected by the inclined surface 5 8 a of each of the divided lenses 5 1 while being attenuated and refracted. The light is emitted as light leakage. In this case, rough surface processing of the inclined surface 5 8 a can effectively prevent light reflection in a specific direction, so that the light leakage from the reflected light is almost zero. Furthermore, The light in the oblique direction is blocked by the lens stage 5 5 that protrudes in the gap between the inclined surfaces of the split lenses 51, so it cannot pass through the gap and is not emitted as light leakage. Also, because it prevents from the split lens As shown in Fig. 12 (c), the light leakage of the gap d between the side surfaces of 5 1 can be considered to form the side surface 5 8 b in stages. Therefore, in this structure, as shown in the figure, the surface is perpendicular to the optical axis. The reflection of light becomes obvious, and the light transmittance in this area is lower than that in other areas ..... The situation shown in Fig. 10 (b) below is contrary to the possibility that radiation may be generated on the operating table 7. The dark pattern of illumination is not good. Here, in the foregoing embodiment, although 36 divided outer lenses form a divided lens, the number of divisions can be increased or decreased according to need. Moreover, for the lens stage of forming the divided lens and The shape and size of the diffusion stage can be changed in various ways to the required illumination area of the shadowless lamp. In addition, the number and size of the division reflecting surface areas constituting the reflector can also be appropriately changed. [Effects of the Invention] As described above The shadowless lamp of the present invention is described, because the light emitted from the light source is emitted as a parallel light beam in the circumferential direction by using a reflector, and then reflected from the --------- manipulating clothes ---- Ί--1T-- ---- ^ (Please read the notes on the back before filling this page) This paper size is applicable to Chinese National Standard (CNS) A4 specification (210X29? Mm) -20- 565674 A7 B7 V. Description of the invention (1¾ ( Please read the notes on the back before filling Page) The light emitted from the mirror is reflected in almost the same direction at different radial positions around the light source as the center of the mirror. The light reflected from the mirror is bent by the outer lens to become a predetermined light distribution characteristic. When designing the lens stage of the outer lens with light distribution characteristics, it is only necessary to obtain the light distribution characteristics for the purpose of refraction parallel or near-parallel light, so that the design of the lens stage is easy, and the matching The shadowless lamp with light characteristics. The reflector is divided into a plurality of band-shaped plural reflective surface areas at different radial positions centered on the light source, and the optical axis direction of the reflected light is distinguished by the aforementioned reflective surface area. Forming a stepped cross-sectional shape can reduce the width in the optical axis direction of the reflector, and can reduce the thickness of the shadowless lamp. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. For the outer lens and the outer lens stage, the lens stage is refracted from the inner lens stage toward the inner side in the radial direction. Further, it is possible to obtain better light distribution characteristics of the shadowless lamp, and to provide a more uniform irradiation of the outer lens by setting a diffusion stage for diffusing light in a direction perpendicular to the radial direction. In addition, by forming a plurality of divided lenses in which the outer lens is divided in the circumferential direction, the shape of the lens stage is simplified, and the design of the lens stage is made easier, and its manufacturing can be easily performed. Furthermore, in this case, the division surface of the division lens is configured to have an inclined surface inclined in the circumferential direction with respect to the optical axis direction of the mirror, and the light reflected in the mirror does not pass through the division in the optical axis direction. The gap between the side surfaces of the lens becomes light leakage, which can prevent streaks of illumination. In addition, the roughened surface is used to process the split surface to prevent light in a specific direction. -21-This paper size is applicable. National Standard (CNS) A4 (210X 297 mm) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 565674 A7, _B7_ V. Description of the invention (1 Moxibustion reflection, which can suppress the lighting streaks caused by light entering the gap. [Simplified description of the drawing] Figure 1 is an embodiment of the shadowless lamp of the present invention Fig. 2 is a longitudinal sectional view showing the optical axis of the shadowless lamp shown in Fig. 1. Fig. 3 is a partially exploded perspective view showing the shadowless lamp shown in Fig. 1. Fig. 4 shows a condenser structure constituting a light source section. A partial cross-sectional perspective view of a schematic structure of a light source structure and a light source structure. Figure 5 shows a partially enlarged sectional view of a mirror. Figure 6 shows a perspective view of a split mirror. Figure 7 shows a plan view of the split mirror and its AA line. Sectional diagrams taken along lines BB. Fig. 8 is a schematic diagram showing a state of reflection and inflection of light emitted from a light source unit. Fig. 9 is a diagram showing a patient's affected part on an operating table illuminated by a shadowless lamp. The state diagram. Figure 10 is an explanatory diagram showing a state where irradiation streaks are generated on the operating table. Figure 11 is a perspective view, a plan view, and a line C c of a modification of a modified example in which the side surface of the split mirror is an inclined surface. Sectional drawing. Fig. 12 is a sectional view for explaining the effect of the modification. Fig. 13 is an external view showing an example of a conventional shadowless lamp and other examples --------- ^ --- -^-1T ------ ^ (Please read the notes on the back before filling in this page) This paper size is applicable to China National Standard (CNS) A4 specification (2 丨 〇'〆297mm) -22- Printed by the Employees ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 565674 A7 B7 V. Description of the invention (2b section view. [Illustration of drawing number] 1 Shadowless lamp 2 Housing section 3 Reflector 4 Light source section 5 Outside mirror 6 Diffuser plate 7 Operating table 2 1 Lamp housing 2 2 Seat 2 3 Support arm 2 4 Peripheral part 2 5 Peripheral part 3 1 Center hole 3 3 Peripheral side area 3 4 Opening edge part 32 Central side area 3 2 a ~ 3 2 d Differentiate reflective surface area 3 5 Flange Part 41 Condenser structure 4 2 Light source structure 4 11 1st lens holder This paper size applies to Chinese national standards CNS) A4 size (210 X 297 mm) -23----------- Approved clothing ---- Ί--1T ------ ^ (Please read the precautions on the back first (Fill in this page) 565674 A7 B7 V. Description of the invention (2) 4 1 1 a Screw hole 4 1 2 2nd lens holder 4 1 3 3rd lens holder 4 1 4 1st condenser 4 1 5 2nd condenser 4 1 6 Conclusion Rod 4 1 7 Nut 4 2 1 Round base 4 2 1; a Screw hole 4 2 2 First support plate 4 2 3 Second support plate 4 2 5 First electric ball seat 4 2 6 Second electric ball seat 4 2 7 No. 1 electric ball 4 2 8 No. 2 electric ball 5 1 Split mirror 5 2 Inner diameter end (Please read the precautions on the back before filling out this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5 3 Outer diameter end 5 4 Notch 58a Inclined surface 5 8 b Side 5 5 Lens stage 5 5 a Inner diameter side lens stage 55b Outer diameter side lens stage This paper size applies Chinese National Standard (CNS) A4 specification (210 X 297 mm) -24- 565674 A7 B7 V. Description of the invention (2 moxibustion 5 6 diffusion stage 5 7 lens stage 5 8 side of the split mirror 1 0 1 lamps Body 1 0 2 Electric ball 1 1 1 Lamp housing 1 1 2 Electric ball 1 1 3 Light collecting lens 1 1 4 Outer lens ----------- installation ---- Ί--order ---- -. Line (Please read the notes on the back before filling this page) The paper printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) -25-