200923267 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種光學透鏡及光源模組，特別係一種能 夠調整照明光場形狀之光學透鏡及光源模組。 【先前技術】 目前，發光二極體（Light Emitting Diode, LED)因具光 質佳（亦即光源輸出的光譜）及發光效率高等特性而逐漸取 代冷陰極螢光燈（Cold Cathode Fluorescent Lamp, CCFL)作 為照明裝置之發光元件，具體可參見Michael S. Shur等人 於文獻 Proceedings of the IEEE，Vol. 93，No. 10 (2005 年 10 月）中發表之 “ Solid-State Lighting: Toward Superior Illumination” 一文。 對於採用發光二極體作為發光元件之照明裝置，通常 具有蝴蝶型光場形狀或擴散型光場形狀（如圖1所示），於這 些光場形狀中心位置之光強度較強，由中心向四周擴散的 區域光強度越來越弱，而實際中並不總是需要此類型之光 場形狀，或中心光強度最強而四周之光強逐漸變弱之光 場，如果這些光場形狀於不需要照明或不需要較高光強的 區域覆蓋較多，則會降低照明裝置所發出光線之利用效 率。因此，有必要提供一種能夠調整照明光場形狀，以提 高光線利用效率之光學透鏡及光源模組。 【發明内容】 以下將以實施例說明一種光學透鏡及光源模組，其能 夠調整照明光場形狀，光線利用效率較高。 6 200923267 一種光學透鏡，用於將光源產生的初始光場調整至— 具有預定形狀之照明光場，《包括複數個陣列排佈之透梦 單元，每個透鏡單元包括一本體，該本體具有一入光面= 一與该入光面相對的出光面，該透鏡單元還包括—發散部 及一會聚部，該發散部及會聚部形成於該入光面及出光面 中至少一者上，該發散部用於將該初始光場沿—第一方向 ，展，該會聚部用於將該初始光場沿一第二方向壓縮，該 第一方向與該第二方向之間具有一預設夾角。 …-種光源模組’包括：至少—個光源，用於產生初始 光場；-個上述光學透鏡，其與該至少—個光源相對設置: 該光學透鏡用於將該初始光場調整至—具有敎形狀之辟 種光子透鏡，用於將光源產生的初始先場調整至一 ί有預定形狀之㈣光場，其包括複數㈣列排佈之透鏡 二兀，每個透鏡單^包括—本體，該本體具有—入光面及 :ΐ該入光面相對的出光面’該出光面為平面，該透鏡單 7包括-發散部或—會聚部，該發散部或會聚部形成於 ，入光面上，該發散部用以於—預定方向上擴展該初始光 ㈣會聚部用以於一預定方向上壓縮該初始光場。 相料U技術，料學透鏡及錢模財包括有透 透鏡單元包括一發散部及/或-會聚部，該發 以及/或會聚部形成於該人光面及出光面中至少一者上， 於將該初始光場沿某一預定方向拓展，即擴展 ’方向上之輻射範圍’該會聚部用於將該光源產生的 200923267 預定方向愿縮，縮該預定方向上之輻 之=光ΓΓ產生的初始光場調整至—具有預定形狀 之…、月先场，從而得到較佳之光場 利用效率。 权同了先源之先 【實施方式】 :面結合_對本發明作進—步的詳細說明。 月多見圖2’本發明第一實施例提供的光學透鏡10， 部ί源產生的初始光場調整至-具有預定形狀之 二先π，其包括複數個陣列排佈之透鏡單元u。 圖3’每個透鏡單元u包括一本體1〇1，該本 /、有一入光面一與該入光面Π0相對的出光面 ’一用於將該初始光場沿X方向擴展的發散部114,及 :用於將該初始光場沿γ方向壓縮的會聚部ιΐ6。該發散 部114為該入光面11〇上向該本體皿内凹設之凹曲面， t本實施例中，該凹曲面為沿Υ方向延伸之柱狀凹曲面， 外部，源（圖未示）所發出的光線經由該柱狀凹曲面射入該 單元11内該會1部116為該出光面112上向該本體 1外凸設之凸曲面’於本實施例中’該凸曲面為沿X方 向延伸之柱狀凸曲面，該透鏡單元11内之光線經由該柱狀 凸曲面射出。 該入光面110上之發散部114設計為凹曲面可使入射 到其上之光線於X方向上產生輻射狀偏轉，即由凹曲面之 底部向該凹曲面較高的兩端偏轉’從而使外部光源⑽未示 發出的光線經由該透鏡單元11#射後於χ方向上之光場形 200923267 狀放大。也就是說，該發散部114拓展了外部光源（圖未示） 於X方向上之輻射範圍。 該出光面112上之會聚部116設計為凸曲面可使從豆 上出射之光線於該Y方向上由該凸曲面之兩端向其頂部產 生會聚狀偏轉’從而使外部光源（圖未示）發出的光線經由該 透鏡單元11折射後於γ方向上之光場形狀減小。也就是 說，該會聚部116壓縮了外部光源（圖未示）於γ方向上之 輻射範圍。 、請參見圖4,圖中示出了外部光源發出的光經由該光學 透鏡10形成的光場形狀，該光場於χ方向上之㈣範圍大 在於Υ方向上之輻射範圍，於又方向上之光強度大在於γ 方向上之光強度。由此可見，該透鏡單元U可應用於光場 =於X方向上之範圍大於γ方向上之範圍之情形，從而 如兩了外部光源（圖未示）所發出光線之利用效率。另，藉由 料不=的凹曲面與凸曲面之曲率，可於\方向與^向 上刀另i知到不同的輕射範圍，從而適應不同的實際需要。 可理解的是’該複數個透鏡單元u亦 當該發散部m設置於該出光面112上時，同^拓 展外部光源（圖未示）於x方向 ' ^ m π上之輻射靶圍，該會聚部116 人光自11G上時亦同樣可壓縮外部光源（圖未 於Y方向上之輻射範圍； 該凹曲面及凸曲面亦可分 有不同曲率之曲面； 順球面、錐形面或其他具 該X方向與該Y方向之間的預設夾角可為銳角或直 200923267 .角，以調整外部光源（圖未示）發出的光線經由該透鏡單元 11折射後於X方向上與Y方向上之光場形狀，從而更加適 應實際需要； 若該出光面112為平面，而該發散部114設置於入光 面110上，則同樣可拓展外部光源（圖未示；)於X方向上之 輻射範圍； 若該出光面112為平面，而會聚部Π6設置於入光面 110上，則同樣可壓縮外部光源（圖未示）於Y方向上之輻射 範圍。 本發明第二實施例提供的光學透鏡，用於將外部光源 產生的初始光場調整至一具有預定形狀之照明光場，其包 括複數個陣列排佈之如圖5所示之透鏡單元21。每個透鏡 單元21包括一本體201，該本體201具有一入光面210， 一與該入光面210相對的出光面212, 一用於擴展該光場沿 X方向形狀之發散部214，及一用於壓縮該光場沿Y方向 形狀之會聚部216。該發散部214與上述第一實施例中之發 散部114相同，在此不再贅述，外部光源（圖未示）所發出的 光線經由該發散部214射入該透鏡單元21内，進而該發散 部214可拓展外部光源（圖未示）於X方向上之輻射範圍。 該會聚部216形成於該出光面212上，其包括複數個平行 排佈且沿X方向延伸之凸起218，每個凸起218具有一頂 面2182及一與該頂面2182相鄰接之侧面2184,該頂面2182 為具有預定斜率之平面，該側面2184為與該出光面212基 本垂直的平面，該透鏡單元21内之光線經由該會聚部216 10 200923267 射出。該複數個凸起218 —般為週期性分佈，例如該凸起 218於該Y方向上之寬度從該出光面212之中間向兩側依 次變小；該凸起218之頂面2182之斜率沿該γ方向從該出 光面212之中間向兩侧依次變大。可理解的是，每個凸起 218之頂面2182亦為具有預定曲率之曲面。 該會聚部216設計為具有複數個平行排佈之沿χ方向 延伸之凸起218，且每個凸起218之頂面2182為具有預定 斜率之平面或具有預定曲率之曲面，從而可使從其上出射 之光線於該γ方向上由該出光面212之兩端向其中間產生 會聚狀偏轉，從而使外部光源（圖未示）發出的光線經由該透 鏡早兀21折射後於¥方向上之光場形狀變小。也就是說， 二曰來4 216 >1縮了外部光源（圖未示）於γ方向上之輕 範圍。 由此可見’該透鏡單元21可應用於光場形狀於χ方向 为Υ方向上之範圍之情形’從而提高了外部光 :(圖未不)所發出光線之利用效率。另，藉由設計不同的凹 γ古Α曲率及每個凸起頂面之斜率或曲率，可於X方向與 需要。σ上分別得到不同的輻射範圍’從而適應不同的實際 用於將二，圖6 ’本發明第二實施例提供的光學透鏡30， 昭明来卩光源產生的初始光場調整至一具有預定形狀之 ”、、4 π，其包括複數個陣列排佈之透鏡單元31。 該本^ ^見目7至11 9’每個透鏡單元31包括一本體301， " 01具有一入光面310,一與該入光面31〇相對的出 11 200923267 光面312，一用於擴展該光場沿χ方向形狀之發散部3丄4， 及一用於壓縮該光場沿γ方向形狀之會聚部316。該發散 部314及會聚部316均形成於該入光面310上，該發散部 314為沿該X方向延伸且向該本體外凸設之凸曲面， 該會聚部316為沿該γ方向延伸且向該本體3〇1内凹設之 凹曲面’在此’該凸曲面與該凹曲面相交形成一複合曲面 於該入光面310上。 於本實施例中，由該凸曲面與該凹曲面相交所形成的 複合曲面中，該發散部314可使入射到其上之光線於χ方 向上產生輻射狀偏轉，從而使外部光源（圖未示）發出的光線 經由該透鏡單元31折射後於χ方向上之光場形狀放大。也 就是說，該發散部314拓展了外部光源（圖未示）於χ方向 上之輻射範圍。該會聚部316可使入射到其上之光線於該γ 方向上產生會聚狀偏轉，從而使外部光源（圖未示）發出的光 線經由該透鏡單元31折射後於γ方向上之光場形狀減小。 也就是說，該會聚部316壓縮了外部光源（圖未示）於γ方 向上之輻射範圍。 請參見圖10,圖中示出了外部光源發出的光經由該光 學透鏡30形成的光場形狀，該光場於χ方向上之輻射範圍 大在於Υ方向上之輻射範圍，於\方向上之光強度大在於 Υ方向上之光強度。由此可見，該透鏡單元31可應用於光 場=^於X方向上之範圍大於γ方向上之範圍之情形，、從 而提向了外部光源（圖未示）所發出光線之利用效率。另，藉 由設計不同的凹曲面與凸曲面之曲率，可於χ方向與γ = 12 200923267 向上分別得到不同的輻射範圍，從而適應不同的實際需 要。可理解的是，該發散部314及會聚部316亦可均形成 於該出光面312上，從而於X方向與Y方向上分別得到不 同的輻射範圍，以適應不同的實際需要。 請參見圖11，本發明第四實施例提供的光學透鏡，用 於將外部光源產生的初始光場調整至一具有預定形狀之照 明光場，其包括複數個陣列排佈之透鏡單元41。每個透鏡 單元41包括一本體401，該本體401具有一入光面410， 一與該入光面410相對的出光面412, 一用於擴展該光場沿 X方向形狀之發散部414，及一用於壓縮該光場沿Y方向 形狀之會聚部416。 該發散部414形成於該入光面410上，其包括複數個 平行排佈且沿Y方向延伸之凹槽418，每個凹槽418具有 一；|面4182及一與該底面4182相鄰接之側面4184，該底 面4182為具有預定斜率之平面，該侧面4184為與該入光 面410基本垂直的平面，外部光源（圖未示）所發出的光線經 由該發散部414進入該透鏡單元41之本體401。該複數個 凹槽418 —般為週期性分佈，例如該凹槽418於該X方向 上之寬度從該入光面410之中間向兩侧依次變小；該凹槽 418之底面4182之斜率沿該X方向從該入光面410之中間 向兩側依次變大。可理解的是，每個凹槽418之底面4182 亦為具有預定曲率之曲面。 該會聚部416形成於該出光面412上，其包括複數個 平行排佈且沿X方向延伸之凸起419，每個凸起419具有 13 200923267 頂面4192及一與該頂面4192相鄰接之側面4194，該頂 面4192為具有預定斜率之平面，該側面4194為與該出光 ^立412基本垂直的平面，該透鏡單元41内之光線經由該會 聚邛416射出。該複數個凸起419 一般為週期性分佈，例 如該凸起419於該γ方向上之寬度從該出光面412之中間 向兩側依次變小；該凸起419之頂面4192之斜率沿該γ方 =從該出光面412之中間向兩側依次變大。可理解的是， 每個凸起419之頂面4192亦為具有預定曲率之曲面。 該發散部414為具有複數個平行排佈之沿γ方向延伸 之凹槽418，且每個凹槽418之底面4182為具有預定斜率 之平面或具有預定曲率之曲面，從而可使入射至其上之光 線於該X方向上由該入光面41〇之兩端向其中間產生會聚 狀偏轉，從而使外部光源（圖未示）發出的光線經由該透鏡單 凡41折射後於χ方向上之光場形狀變大。也就是說，該發 放。卩414擴展了外部光源（圖未示）於X方向上之輻射範圍。 該會聚部416為具有複數個平行排佈之沿χ方向延伸 之凸起419，且每個凸起419之頂面4192為具有預定斜率 之平面或具有預定曲率之曲面。從而可使從其上出射之光 線於該Υ方向上由該出光面412之兩端向其中間產生會聚 狀偏轉，從而使外部光源（圖未示）發出的光線經由該透^單 元41折射後於Υ方向上之光場形狀變小。也就是說，該會 聚部216壓縮了外部光源（圖未示）於丫方向上之輻射範圍\ 由此可見，該透鏡單元41可應用於光場形狀於χ方向 上之範圍大於Υ方向上之範圍之情形，從而提高了外部光 14 200923267 源（圖未示）所發出光線之 個凹槽底面之斜率或 欠率。另，藉由設計不同的每 率，可於X方向與γ方向；，與每個凸起頂面之斜率或曲 而適應不同的實際需要。°上分別得到不同的輻射範圍，從 可理解的是，若兮φ 士 設置於入光面41〇上^ 412為平面’而該發散部4U 方向上之輕射範圍;若=可拓展外部光源⑽未示)於X 設置於入光面41。上，:412為平面’而會聚部“6 方向上之輻射範圍。 可壓縮外部光源（圖未示）於γ 請參見圖12，本菸日J9势^在 其包括-個本發明第二實施例提供的光源模組 平行排佈之的料透鏡1G，複數個 千仃排佈之先學杈組51及-個反射單元52。 每個光學模組51包括一個電 ^ , IU电峪丞片510及禝數個光源 該稷數個光源512均勻設置於該電路基片510上且盥 該光學透鏡U)巾之透鏡單元u分卿應。 - 該反射單元52包括複數個連續設置之長條形凹槽 520,每個長條形凹槽52〇之底部設置有一個光學模組/ 故該複數個光源512即可形成複數個線性陣列。該光咸 組51之電路基片510與該長條形凹槽52〇之底部相連:該 光學模組51之複數個光源512所發出的光經由該長條^ 槽520之開口部分射出。長條形凹槽52〇之側壁切用來 反射設置於該長條形凹槽52〇底部之光源512所發出的 光，在此，可於該長條形凹槽52〇之側壁522上設置反射 膜以達到反光效果。 15 200923267 該複數個長條形凹槽52〇均 槽520之延伸方向為χ方々^ 丁排歹】，該長條形凹 :為梯形或其他形狀，只要利於放置光學模組5 = 可。該長條形凹槽5 2 〇之側壁5 22可為平面或曲面^ j於反射光線。由於該長條形凹槽52()之側壁似之發光 ^可使設置於該長條形凹槽52〇底部之光學模組^發 文先線於Y方向上由該長條形凹槽52〇之側壁5 長條形凹槽520之中間產生偏轉 ° 轉從而使叹置於該長條形 曰〇底敎複數個光源512發出的光線經由該長條带 凹槽520之侧壁522反射後由該長條形凹槽52〇之兩端向 其中間偏轉。在此’該長條形凹槽520之側壁522相對於 該長條形凹槽520底部之傾斜角度或該侧壁52〇之曲率半 ^之不同’可對應使經其反射後之光線沿某―方向出射， k而不同程度的壓縮複數個光源512於Y方向上之輻射範 圍。由此可見，該複數個光源512發出的光線可先被該長 條形凹槽520之側壁522反射，以先壓縮複數個光源512 於Y方向上之輻射範圍，再進一步經由該光學透鏡1〇調整 該複數個光源512於义方向與γ方向上之輻射範圍，以ς 到不同的光場形狀。 請參見圖13,圖中示出了複數個光源512發出的光先 經由該反射單元52反射，再經由該光學透鏡1〇形成的光 場形狀’該光場形狀與圖4中單純經由光學透鏡所形成 的光％开> 狀相比’其於X方向上之輻射範圍比γ方向上之 輻射範圍更大且避免了眩光之產生。由此可見，該光源模 16 200923267 組50可應用於光場形狀於又方向上之範圍明顯大於γ方 向上之範圍之情形，以適應不同的實際需要，從而提高了 複數個光源512所發出光線之利用效率。 间 在此，亦可將上述第二實施例、第三實施例、第四實 施例所提供的光學透鏡應用於該第五實施例提供的光源模 組50,並使該光源模組5〇中之複數個光源512分別對應 提供光學透鏡中之透鏡單^。當該複數個光源512中:一 個或少數幾個不能正常發光時，該一個或少數幾個不能正 常發光之光源512不會對經由該長條形凹槽52〇之側壁 反射後形成的輻射範圍或均勻度產生很大影響，從而保$ 了光源模組50之穩定性。 、 綜上所述，本發明確已符合發明專利之要件， =出專利2凊。惟，以上所述者僅為本發明之較佳實施方 式’自不能以此限制本案之申請專利範圍。舉凡熟悉本案 技藝之人士援依本發明之精神所作之等效修飾或變化，: 應涵蓋於以下申請專利範圍内。 白 【圖式簡單說明】 圖1係一種擴散型光場形狀之效果圖。 圖2係本發明第一實施例光學透鏡之結構示意圖。 圖3係圖2中透鏡單元之結構示意圖。 狀之=經由圖2中第-實施例光學透鏡形成的光場形 厂、立=5係本發明第二實施例光學透鏡中透鏡單元之結構 17 200923267 圖6係本發明第三實施例光學透鏡之結構示意圖。 圖7係圖6中透鏡單元之結構示意圖。 圖8係圖7中沿VIII-VIII之截面示意圖。 圖9係圖7中沿IX-IX之截面示意圖。 圖10係經由圖6中第三實施例光學透鏡形成的光場形 狀之效果圖。 圖11係本發明第四實施例光學透鏡中透鏡單元之結構 示意圖。 圖12係本發明第五實施例光源模組之結構示意圖。 圖13係圖12中第五實施例光源模組形成的光場形狀 之效果圖。 【主要元件符號說明】 光學透鏡 10， 30 透鏡單元 11， 21，31 ，41 光源模組 50 光學模組 51 反射單元 52 本體 101 ，201， 301， 401 入光面 110 ，210， 310， 410 出光面 112 ，212， 312， 412 發散部 114 ，214， 314， 414 會聚部 116 ，216， 316， 416 凸起 218 ，419 凹槽 418 18 200923267 .電路基片 510 光源 512 長條形凹槽 520 側壁 522 頂面 2182， 4192 側面 2184， 4184 ， 4194 底面 4182 19BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical lens and a light source module, and more particularly to an optical lens and a light source module capable of adjusting the shape of an illumination light field. [Prior Art] At present, the Light Emitting Diode (LED) is gradually replacing the Cold Cathode Fluorescent Lamp (CCFL) because of its good light quality (that is, the spectrum of the light source output) and high luminous efficiency. As a light-emitting element of a lighting device, see "Solid-State Lighting: Toward Superior Illumination" by Michael S. Shur et al., Proceedings of the IEEE, Vol. 93, No. 10 (October 2005). One article. For an illumination device using a light-emitting diode as a light-emitting element, it generally has a butterfly-type light field shape or a diffused light field shape (as shown in FIG. 1), and the light intensity at the center position of these light field shapes is strong, from the center direction. The intensity of the surrounding area is getting weaker and weaker. In practice, this type of light field shape is not always needed, or the light field with the strongest central light intensity and the surrounding light intensity is gradually weakened. If these light field shapes are not Areas that require illumination or that do not require higher light levels will have more coverage, which will reduce the efficiency of light emitted by the lighting device. Therefore, it is necessary to provide an optical lens and a light source module capable of adjusting the shape of an illumination light field to improve light utilization efficiency. SUMMARY OF THE INVENTION Hereinafter, an optical lens and a light source module capable of adjusting the shape of an illumination light field and having high light utilization efficiency will be described by way of embodiments. 6 200923267 An optical lens for adjusting an initial light field generated by a light source to an illumination light field having a predetermined shape, comprising a plurality of arrays of transparent dream units, each lens unit comprising a body having a body The light incident surface is a light emitting surface opposite to the light incident surface, the lens unit further includes a diverging portion and a converging portion, and the diverging portion and the converging portion are formed on at least one of the light incident surface and the light emitting surface. The diverging portion is configured to extend the initial light field along the first direction, and the convergence portion is configured to compress the initial light field in a second direction, the first direction and the second direction having a predetermined angle . The light source module includes: at least one light source for generating an initial light field; and the above optical lens disposed opposite to the at least one light source: the optical lens is used to adjust the initial light field to - a photonic lens having a 敎 shape for adjusting an initial prior field generated by a light source to a (four) light field having a predetermined shape, comprising a plurality of (four) columns of lens pairs, each lens comprising a body The body has a light-incident surface and a light-emitting surface opposite to the light-incident surface. The light-emitting surface is a plane. The lens unit 7 includes a diverging portion or a convergence portion. The diverging portion or the converging portion is formed in the light-integrating portion. The diverging portion is configured to expand the initial light (four) convergence portion in a predetermined direction for compressing the initial light field in a predetermined direction. The material U technique, the material lens and the money model include a lens unit including a diverging portion and/or a convergence portion, the hair emitting and/or converging portion being formed on at least one of the human light surface and the light emitting surface, Expanding the initial light field in a predetermined direction, that is, expanding the radiation range in the 'direction', the convergence portion is used to shrink the predetermined direction of the 200923267 generated by the light source, and shrinking the spoke in the predetermined direction The initial light field is adjusted to - a predetermined shape, a front field, to obtain a better light field utilization efficiency. The right is the same as the first source. [Embodiment]: Surface bonding _ Detailed description of the steps of the present invention. Referring to Fig. 2', in the optical lens 10 of the first embodiment of the present invention, the initial light field generated by the source is adjusted to - two π having a predetermined shape, which includes a plurality of lens units u arranged in an array. 3' each lens unit u includes a body 1〇1, a light-emitting surface having a light-incident surface opposite to the light-incident surface Π0, and a diverging portion for expanding the initial light field in the X direction. 114, and: a convergence portion ι 6 for compressing the initial light field in the γ direction. The diverging portion 114 is a concave curved surface that is recessed into the body plate on the light-incident surface 11 . In the embodiment, the concave curved surface is a cylindrical concave curved surface extending in the Υ direction, and the external source (not shown) The emitted light is incident on the unit 11 through the cylindrical concave curved surface. The portion 116 is a convex curved surface that protrudes outward from the body 1 on the light-emitting surface 112. In the present embodiment, the convex curved surface is along the edge. A columnar convex curved surface extending in the X direction, and light rays in the lens unit 11 are emitted through the cylindrical convex curved surface. The diverging portion 114 on the light incident surface 110 is designed as a concave curved surface to cause the light incident thereon to be radially deflected in the X direction, that is, from the bottom of the concave curved surface to the higher end of the concave curved surface. The light that is not emitted by the external light source (10) is amplified by the light field shape 200923267 in the χ direction after the lens unit 11# is shot. That is, the diverging portion 114 expands the radiation range of the external light source (not shown) in the X direction. The concentrating portion 116 on the illuminating surface 112 is designed as a convex curved surface to cause the light emitted from the bean to be deflected in the Y direction from the both ends of the convex curved surface to the top thereof to make the external light source (not shown). The emitted light is refracted by the lens unit 11 and the shape of the light field in the γ direction is reduced. That is, the converging portion 116 compresses the radiation range of the external light source (not shown) in the gamma direction. Please refer to FIG. 4, which shows the shape of the light field formed by the light emitted by the external light source via the optical lens 10. The range of the light field in the x direction is mainly in the radial direction of the x-direction, and in the direction. The intensity of the light is large in the intensity of light in the gamma direction. It can be seen that the lens unit U can be applied to the case where the range of the light field = in the X direction is larger than the range in the γ direction, such as the utilization efficiency of the light emitted by the external light source (not shown). In addition, by the curvature of the concave curved surface and the convex curved surface which are not =, different light-light ranges can be known in the \ direction and the ^ direction, so as to adapt to different practical needs. It can be understood that the plurality of lens units u also expand the external target (not shown) in the x-direction ' ^ m π radiation target when the diverging portion m is disposed on the light-emitting surface 112. The convergence part 116 can also compress the external light source when it is from 11G (the radiation range is not in the Y direction; the concave curved surface and the convex curved surface can also be divided into curved surfaces with different curvatures; the smooth surface, the tapered surface or the like The preset angle between the X direction and the Y direction may be an acute angle or a straight angle of 200923267. To adjust the light emitted by the external light source (not shown) to be refracted by the lens unit 11 in the X direction and the Y direction. The shape of the light field is further adapted to the actual needs; if the light-emitting surface 112 is a flat surface and the diverging portion 114 is disposed on the light-incident surface 110, the radiation range of the external light source (not shown) in the X direction can also be expanded. If the light-emitting surface 112 is planar and the convergence portion 6 is disposed on the light-incident surface 110, the radiation range of the external light source (not shown) in the Y direction can also be compressed. The optical lens provided by the second embodiment of the present invention For the production of external light sources The initial light field is adjusted to an illumination light field having a predetermined shape, and includes a plurality of arrays of lens units 21 as shown in Fig. 5. Each lens unit 21 includes a body 201 having an incoming light. The surface 210, a light exiting surface 212 opposite to the light incident surface 210, a diverging portion 214 for expanding the shape of the light field in the X direction, and a converging portion 216 for compressing the shape of the light field in the Y direction. The diverging portion 214 is the same as the diverging portion 114 in the first embodiment, and the light emitted from an external light source (not shown) is incident into the lens unit 21 via the diverging portion 214, and the diverging portion is further omitted. The 214 can extend the radiation range of the external light source (not shown) in the X direction. The convergence portion 216 is formed on the light exit surface 212, and includes a plurality of protrusions 218 arranged in parallel and extending in the X direction, each convex The 218 has a top surface 2182 and a side surface 2184 adjacent to the top surface 2182. The top surface 2182 is a plane having a predetermined slope. The side surface 2184 is a plane substantially perpendicular to the light exit surface 212. The lens unit 21 The light inside is passed through the convergence unit 216 10 2 00923267 is emitted. The plurality of protrusions 218 are generally periodically distributed. For example, the width of the protrusion 218 in the Y direction is gradually reduced from the middle of the light exit surface 212 to both sides; the top surface 2182 of the protrusion 218 The slope of the protrusion 218 is sequentially increased from the middle to the both sides of the light-emitting surface 212. It is understood that the top surface 2182 of each of the protrusions 218 is also a curved surface having a predetermined curvature. The convergence portion 216 is designed to have a plurality of surfaces. The protrusions 218 extending in the χ direction in parallel, and the top surface 2182 of each protrusion 218 is a plane having a predetermined slope or a curved surface having a predetermined curvature, so that the light emitted therefrom can be in the γ direction Convergence-like deflection is generated from both ends of the light-emitting surface 212, so that the light emitted from the external light source (not shown) is refracted by the lens early 21 and the shape of the light field in the ¥ direction becomes smaller. That is to say, the second 4 4 216 > 1 shrinks the light range of the external light source (not shown) in the γ direction. From this, it can be seen that the lens unit 21 can be applied to the case where the shape of the light field is in the range of the x direction in the x direction, thereby improving the utilization efficiency of the external light: (not shown). In addition, by designing different concave γ ancient curvatures and the slope or curvature of the top surface of each convex, it is possible to be in the X direction. Different optical radiation ranges are respectively obtained on σ to adapt to different actual use for the optical lens 30 provided by the second embodiment of the present invention. The initial light field generated by the light source of the present invention is adjusted to have a predetermined shape. ”, 4 π, which includes a plurality of arrays of lens units 31. The present lens unit 7 to 11 9′ each lens unit 31 includes a body 301, " 01 has a light incident surface 310, a a thin surface 312 opposite to the light incident surface 31 2009, a diverging portion 3 丄 4 for expanding the shape of the light field along the χ direction, and a condensing portion 316 for compressing the shape of the light field along the γ direction The diverging portion 314 and the converging portion 316 are both formed on the light incident surface 310. The diverging portion 314 is a convex curved surface extending in the X direction and protruding toward the outside of the body. The converging portion 316 extends in the γ direction. And a concave curved surface that is recessed into the body 3〇1, where the convex curved surface intersects the concave curved surface to form a composite curved surface on the light incident surface 310. In the embodiment, the convex curved surface and the concave surface In the composite curved surface formed by the intersection of the curved surfaces, the diverging portion 314 can be incident on The upper light beam is radially deflected in the χ direction, so that the light emitted by the external light source (not shown) is refracted by the lens unit 31 and then magnified in the shape of the light field in the χ direction. That is, the diverging portion 314 is expanded. The radiation range of the external light source (not shown) in the χ direction. The concentrating portion 316 can cause the light incident thereon to converge in the γ direction, thereby causing the light from the external light source (not shown). The shape of the light field in the γ direction is reduced by the lens unit 31. That is, the convergence portion 316 compresses the radiation range of the external light source (not shown) in the γ direction. Referring to FIG. 10, The shape of the light field formed by the light emitted by the external light source via the optical lens 30 is shown. The radiation range of the light field in the x-direction is greater in the radial direction, and the light intensity in the \ direction is greater in the x-direction. It can be seen that the lens unit 31 can be applied to the case where the range of the light field=^ in the X direction is larger than the range in the γ direction, thereby lifting the light emitted by the external light source (not shown). By using efficiency, by designing the curvature of different concave and convex surfaces, different radiation ranges can be obtained in the χ direction and γ = 12 200923267, respectively, to adapt to different practical needs. It is understandable that the divergence 314 and the convergence portion 316 can also be formed on the light-emitting surface 312, so that different radiation ranges are obtained in the X direction and the Y direction, respectively, to meet different practical needs. Referring to FIG. 11, a fourth embodiment of the present invention provides An optical lens for adjusting an initial light field generated by an external light source to an illumination light field having a predetermined shape, comprising a plurality of arrays of lens units 41. Each lens unit 41 includes a body 401, the body 401 Having a light incident surface 410, a light exit surface 412 opposite to the light incident surface 410, a diverging portion 414 for expanding the shape of the light field along the X direction, and a convergence for compressing the shape of the light field along the Y direction Part 416. The diverging portion 414 is formed on the light incident surface 410, and includes a plurality of grooves 418 arranged in parallel and extending in the Y direction. Each of the grooves 418 has a surface portion 4182 and a surface adjacent to the bottom surface 4182. The side surface 4184 is a plane having a predetermined slope. The side surface 4184 is a plane substantially perpendicular to the light incident surface 410. Light emitted by an external light source (not shown) enters the lens unit 41 via the diverging portion 414. The body 401. The plurality of grooves 418 are generally periodically distributed. For example, the width of the groove 418 in the X direction decreases from the middle of the light incident surface 410 to the two sides; the slope of the bottom surface 4182 of the groove 418 The X direction is sequentially increased from the middle of the light incident surface 410 to both sides. It can be understood that the bottom surface 4182 of each groove 418 is also a curved surface having a predetermined curvature. The concentrating portion 416 is formed on the light-emitting surface 412, and includes a plurality of protrusions 419 arranged in parallel and extending in the X direction. Each protrusion 419 has a top surface 4192 of 200923267 and a top surface adjacent to the top surface 4192. The side surface 4194 is a plane having a predetermined slope. The side surface 4194 is a plane substantially perpendicular to the light output 412. Light rays in the lens unit 41 are emitted through the convergence 邛 416. The plurality of protrusions 419 are generally periodically distributed. For example, the width of the protrusion 419 in the γ direction is gradually decreased from the middle of the light exit surface 412 to both sides; the slope of the top surface 4192 of the protrusion 419 is along the slope. The γ square = becomes larger in order from the middle of the light-emitting surface 412 to both sides. It can be understood that the top surface 4192 of each protrusion 419 is also a curved surface having a predetermined curvature. The diverging portion 414 is a groove 418 having a plurality of parallel rows extending in the γ direction, and the bottom surface 4182 of each groove 418 is a plane having a predetermined slope or a curved surface having a predetermined curvature so as to be incident thereon The light rays are deflected by the two ends of the light incident surface 41〇 in the X direction, so that the light emitted by the external light source (not shown) is refracted by the lens 41 and then in the χ direction. The shape of the light field becomes larger. In other words, the release.卩 414 extends the range of radiation from the external source (not shown) in the X direction. The converging portion 416 is a protrusion 419 having a plurality of parallel rows extending in the zigzag direction, and the top surface 4192 of each of the protrusions 419 is a plane having a predetermined slope or a curved surface having a predetermined curvature. Therefore, the light emitted from the light-emitting surface 412 is deflected by the two ends of the light-emitting surface 412 in the Υ direction, so that the light emitted by the external light source (not shown) is refracted by the transparent unit 41. The shape of the light field in the direction of the 变 is small. That is, the converging portion 216 compresses the radiation range of the external light source (not shown) in the x-direction. Thus, the lens unit 41 can be applied to the shape of the light field in the x-direction direction greater than the x-direction. In the case of the range, the slope or undershoot of the bottom surface of the groove of the light emitted by the external light 14 200923267 source (not shown) is increased. In addition, by designing different rates, it is possible to adapt to different practical needs in the X direction and the γ direction; and the slope or curvature of each convex top surface. Different radiation ranges are obtained respectively, and it can be understood that if 兮φ士士 is disposed on the light incident surface 41〇, 412 is a plane' and the light-emitting range of the diverging portion is in the 4U direction; if = the external light source can be expanded (10) Not shown) is disposed on the light incident surface 41 at X. Above: 412 is the plane 'and the convergence part' is the radiation range in the 6 direction. The compressible external light source (not shown) is in γ. See Figure 12, the present J9 potential is included in the second implementation of the present invention. The light source module provided by the example is arranged in parallel with the material lens 1G, the plurality of thousands of rows of the first learning group 51 and the one reflecting unit 52. Each of the optical modules 51 comprises an electric ^, IU electric sheet 510 and a plurality of light sources, the plurality of light sources 512 are uniformly disposed on the circuit substrate 510 and the lens unit of the optical lens U) is divided into. - the reflecting unit 52 includes a plurality of strips of continuous arrangement The groove 520 is provided with an optical module at the bottom of each of the elongated grooves 52. Therefore, the plurality of light sources 512 can form a plurality of linear arrays. The circuit substrate 510 of the light salt group 51 and the length The strips are connected to the bottom of the strips 52. The light emitted by the plurality of light sources 512 of the optical module 51 is emitted through the opening portion of the strips 520. The side walls of the strips 52 are cut for reflection. The light emitted by the light source 512 at the bottom of the elongated groove 52〇, here, may be in the shape of the strip A reflective film is disposed on the side wall 522 of the groove 52 to achieve a reflective effect. 15 200923267 The plurality of elongated grooves 52 and the extending direction of the groove 520 are in the direction of the square 々 ^ 歹 歹, which is a trapezoid Or other shapes, as long as it is advantageous to place the optical module 5 = Yes. The side wall 5 22 of the elongated groove 5 2 can be a plane or a curved surface to reflect light. Due to the side wall of the elongated groove 52 () The light-emitting device can generate an optical module disposed at the bottom of the elongated groove 52, and the first line is generated in the Y direction from the middle of the long-shaped groove 52 of the elongated groove 52. The deflection is rotated so that the light emitted by the plurality of light sources 512 is reflected by the side wall 522 of the long strip groove 520, and then the ends of the elongated groove 52 are turned The deflection of the side wall 522 of the elongated groove 520 with respect to the bottom of the elongated groove 520 or the curvature of the side wall 52 is half-corresponding to the reflection The light rays exit in a certain direction, k and different degrees of compression of the plurality of light sources 512 in the Y direction It can be seen that the light emitted by the plurality of light sources 512 can be first reflected by the sidewall 522 of the elongated groove 520 to first compress the radiation range of the plurality of light sources 512 in the Y direction, and further through the optical lens 1 〇 adjusting the radiation range of the plurality of light sources 512 in the sense direction and the γ direction to obtain different light field shapes. Referring to FIG. 13, the light emitted by the plurality of light sources 512 is first passed through the reflection unit 52. The reflection, and the shape of the light field formed by the optical lens 1 ' is smaller than the γ direction in the X direction of the light field shape formed by the optical lens in FIG. 4 alone. The radiation range is larger and glare is avoided. It can be seen that the light source mode 16 200923267 group 50 can be applied to the case where the shape of the light field in the direction of the direction is significantly larger than the range in the γ direction, so as to adapt to different practical needs, thereby improving the light emitted by the plurality of light sources 512. Utilization efficiency. The optical lens provided by the second embodiment, the third embodiment, and the fourth embodiment may be applied to the light source module 50 provided in the fifth embodiment, and the light source module 5 is disposed in the middle. The plurality of light sources 512 respectively provide lens lenses in the optical lens. When one or a few of the plurality of light sources 512 are unable to emit light normally, the one or a few light sources 512 that are not normally illuminated do not reflect the radiation range formed by the sidewalls of the elongated grooves 52. Or uniformity has a large effect, thereby ensuring the stability of the light source module 50. In summary, the present invention has indeed met the requirements of the invention patent, = 2 patents. However, the above description is only a preferred embodiment of the present invention, which is not intended to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims. White [Simple description of the drawing] Fig. 1 is an effect diagram of a diffused light field shape. 2 is a schematic structural view of an optical lens according to a first embodiment of the present invention. 3 is a schematic structural view of the lens unit of FIG. 2. Shape = the light field shape formed by the optical lens of the first embodiment in Fig. 2, the vertical structure of the lens unit in the optical lens of the second embodiment of the present invention 17 200923267 Fig. 6 is an optical lens of the third embodiment of the present invention Schematic diagram of the structure. Figure 7 is a schematic view showing the structure of the lens unit of Figure 6. Figure 8 is a schematic cross-sectional view along line VIII-VIII of Figure 7. Figure 9 is a schematic cross-sectional view taken along line IX-IX of Figure 7. Fig. 10 is a view showing the effect of the shape of the light field formed by the optical lens of the third embodiment of Fig. 6. Figure 11 is a view showing the structure of a lens unit in an optical lens according to a fourth embodiment of the present invention. 12 is a schematic structural view of a light source module according to a fifth embodiment of the present invention. Fig. 13 is a view showing the effect of the shape of the light field formed by the light source module of the fifth embodiment of Fig. 12. [Description of main component symbols] Optical lens 10, 30 Lens unit 11, 21, 31, 41 Light source module 50 Optical module 51 Reflecting unit 52 Main body 101, 201, 301, 401 Light-emitting surface 110, 210, 310, 410 Light-emitting surface Face 112, 212, 312, 412 divergence 114, 214, 314, 414 convergence portion 116, 216, 316, 416 projection 218, 419 groove 418 18 200923267. circuit substrate 510 light source 512 elongated groove 520 sidewall 522 top surface 2182, 4192 side 2184, 4184, 4194 bottom surface 4182 19