1324237 •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。 1324237 i 1 種光學透鏡，用於將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，每個透鏡單元包括一本體，該本體具有一入光面及 一與該入光面相對的出光面，該透鏡單元還包括一發散部 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一第一方向 擴展，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夹角。 # 一種光源模組，包括：至少一個光源，用於產生初始 光場，一個上述光學透鏡，其與該至少一個光源相對設置， 該光學透鏡用於將該初始光場調整至一具有預定形狀之照 明光場。 一種光學透鏡，用於將光源產生的初始光場調整至一 具有預疋形狀之照明光場，其包括複數個陣列排佈之透鏡 單元’每個透鏡單元包括一本體，該本體具有一入光面及 φ 一與該入光面相對的出光面，該出光面為平面，該透鏡單 元還包括一發散部或一會聚部，該發散部或會聚部形成於 該入光面上，該發散部用以於一預定方向上擴展該初始光 場，該會聚部用以於一預定方向上壓縮該初始光場。 相對於先前技術，該光學透鏡及光源模組中包括有透 鏡單元，每個透鏡單元包括一發散部及/或一會聚部，該發 散部及/或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某一預定方向拓展，即擴展 該預定方向上之輻射範圍，該會聚部用於將該光源產生的 1324237 1, 1 初始光場沿某一預定方向壓縮，即壓縮該預定方向上之輻 射範圍，以將光源產生的初始光場調整至一具有預定形狀 之照明光場’從而得到較佳之光場形狀’提高了光源之光 利用效率。 【實施方式】 下面結合附圖對本發明作進一步的詳細說明。 請參見圖2 ’本發明第一實施例提供的光學透鏡1〇， ^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η。 請參見圖3，每個透鏡單元η包括一本體1〇1，該本 體101具有一入光面11〇，一與該入光面11〇相對的出光面 112，一用於將該初始光場沿χ方向擴展的發散部114，及 一用於將該初始光場沿γ方向壓縮的會聚部116。該發散 部114為該入光面11〇上向該本體1〇1内凹設之凹曲面， 於本實施例中，該凹曲面為沿γ方向延伸之柱狀凹曲面， •外部光源（圖未示）所發出的光線經由該柱狀凹曲面射入該 透鏡單元11内。該會聚部116為該出光面112上向該本體 1〇1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χ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（圖未示） 發出的光線經由該透鏡單元11折射後於χ方向上之光場形 1324237 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其 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το 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 輕射範圍。1324237 • Nine, invention: [Technical 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) due to its good light quality (that is, the spectrum of the light source output) and high luminous efficiency. For the illuminating element of the illuminating device, see "Solid-State Lighting: Toward Superior" by Michael S. Shur et al., Proceedings of the IEEE, Vol. 93, No. 10 (October 2005). Illumination" 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. 1324237 i 1 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 lens units, each lens unit comprising a body, the body having a The light incident surface and 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 expand the initial light field in a first direction, the convergence portion is configured to compress the initial light field in a second direction, and the first direction and the second direction have a predetermined angle . A light source module comprising: at least one light source for generating an initial light field, an optical lens disposed opposite to the at least one light source, wherein the optical lens is used to adjust the initial light field to a predetermined shape Illumination light field. An optical lens for adjusting an initial light field generated by a light source to an illumination light field having a pre-shaped shape, comprising a plurality of arrays of lens units each of which includes a body having an incoming light a light emitting surface opposite to the light incident surface, wherein the light emitting surface is a plane, the lens unit further includes a diverging portion or a converging portion, the diverging portion or the converging portion is formed on the light incident surface, the diverging portion The initial light field is expanded in a predetermined direction, and the convergence portion is configured to compress the initial light field in a predetermined direction. Compared with the prior art, the optical lens and the light source module include a lens unit, each lens unit includes a diverging portion and/or a converging portion, and the diverging portion and/or the converging portion are formed on the light incident surface and the light emitting surface. In at least one of the portions, the diverging portion is configured to expand the initial light field in a predetermined direction, that is, to expand a radiation range in the predetermined direction, and the convergence portion is used to generate a 1324237 1, 1 initial light field of the light source. Compressing in a predetermined direction, that is, compressing the radiation range in the predetermined direction to adjust the initial light field generated by the light source to an illumination light field having a predetermined shape to obtain a better light field shape. effectiveness. [Embodiment] The present invention will be further described in detail below with reference to the accompanying drawings. Referring to FIG. 2, an optical lens 1〇 provided by the first embodiment of the present invention is used for adjusting an initial light field generated by an external light source to an illumination light field having a predetermined shape, which includes a plurality of arrays of lens units. η. Referring to FIG. 3, each lens unit η includes a body 1〇1, and the body 101 has a light incident surface 11〇, a light exit surface 112 opposite to the light incident surface 11〇, and one for the initial light field. A diverging portion 114 extending in the x-direction and a converging portion 116 for compressing the initial optical field in the gamma direction. The diverging portion 114 is a concave curved surface that is recessed into the body 1〇1 on the light incident surface 11 . In the embodiment, the concave curved surface is a cylindrical concave curved surface extending in the γ direction, and the external light source (Fig. The light emitted by the light is emitted into the lens unit 11 via the cylindrical concave curved surface. The concentrating portion 116 is a convex curved surface that protrudes outward from the body 1 〇 1 on the illuminating surface 112. In this embodiment, the convex curved surface is a columnar convex curved surface extending in the X direction, and the light in the lens unit passes through The columnar convex curved surface is emitted. 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 ends of the concave curved surface, thereby The light emitted by the external light source (not shown) is refracted by the lens unit 11 and magnified in the light field shape 1324237 in the x direction. 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, so that the light emitted therefrom can be deflected in the Y direction from the two ends of the convex curved surface to the top thereof, thereby making the external light source (not shown) The emitted light is refracted by the lens το 11 and the shape of the light field in the γ direction is reduced. That is, the converging portion 116 compresses the light-emitting range of the external light source (not shown) in the γ direction.
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11可應用於光場 Τ狀於X方向上之範圍大於γ方向上之範圍之情形，從而 提尚了外部光源（圖未示）所發ώ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方向與向Referring to FIG. 4 ′, the light field shape formed by the light emitted by the external light source via the optical lens 10 is shown. The radiation range of the light field in the x-direction is larger in the radial direction, in the \ direction. The light intensity is large in the intensity of light in the direction of Υ. It can be seen that the lens unit 11 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 improving the utilization efficiency of the light emitted by the external light source (not shown). In addition, by designing the curvature of different concave and convex surfaces, the direction and direction can be
上分別得到不同的輻射範圍，從而適應不同的實際需要。 I理解的是，該複數個透鏡單元U亦可為—體、结構； 當該發散部114設置於該出光面112上時，同樣可拓 展外部光源（圖未示）於X方向上之輻射範圍，該會聚部116 設置於該人光® 11Q上時亦同樣可壓縮外部光源（圖未 於Y方向上之輻射範圍； 錐形面或其他具 該凹曲面及凸曲面亦可分別為球面 有不同曲率之曲面； 該X方向與該γ方向之間 的預設夾角可為銳角或直 1324237 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116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相鄰接之側面2184,該頂面2182 為具有預定斜率之平面，該侧面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216Different radiation ranges are obtained on the top to adapt to different practical needs. I understand that the plurality of lens units U can also be a body and a structure; when the diverging portion 114 is disposed on the light-emitting surface 112, the radiation range of the external light source (not shown) in the X direction can also be expanded. The concentrating portion 116 is also squeezable to the external light source when disposed on the LIGHT® 11Q (the radiation range is not in the Y direction; the tapered surface or other concave surface and convex curved surface may also have different spherical surfaces respectively) a curved surface of the curvature; the predetermined angle between the X direction and the γ direction may be an acute angle or a straight angle of 1324237 to adjust the light emitted by the external light source (not shown) to be refracted through the lens unit 11 in the X direction and Y The shape of the light field in the direction is more suitable for the actual needs; if the light exiting surface 112 is a flat surface and the diverging portion 114 is disposed on the light incident surface 110, the external light source (not shown) can also be expanded in the X direction. Radiation range; if the light-emitting surface 112 is a flat surface, and the convergence portion 116 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 second embodiment of the present invention provides optical lens For adjusting the initial light field generated by the external light source to an illumination light field having a predetermined shape, comprising a plurality of arrays of lens units 21 as shown in FIG. 5. Each lens unit 21 includes a body 201, The body 201 has a light incident surface 210, a light exit surface 212 opposite to the light incident surface 210, a diverging portion 214 for expanding the shape of the light field along the X direction, and a light source for compressing the light field in the Y direction. The shape of the convergence portion 216. The divergence portion 214 is the same as the divergence portion 114 of the first embodiment, and the light emitted by an external light source (not shown) is incident on the lens unit via the diverging portion 214. In the 21, the diverging portion 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 parallel rows and extending in the X direction. a protrusion 218, each protrusion 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, and the side surface 2184 is substantially perpendicular to the light exit surface 212. Plane, within the lens unit 21 The converging portion 216 via line
i I 射出。該複數個凸起218 —般為週期性分佈，例如該凸起 18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 鏡單元21折射後於¥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γ方向上之輻 範圍。 由此可見，該透鏡單元21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 癱源（圖未示）所發出光線之利用效率。#，藉由設計不同的凹 曲面之曲率及每個凸起頂面之斜率或曲率，可於X方向與 Υ方向上分別得到不同的輻射範圍，從而適應不同的實際 需要。 不 請參見圖6,本發明第三實施例提供的光學透鏡3〇, 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31。 請參見圖7至圖9,每個透鏡單元31包括一本體3〇1， 該本體301具有-入光面31〇，一與該人光面31〇相對的出i I shot. The plurality of protrusions 218 are generally periodically distributed. For example, the width of the protrusions 18 in the Y direction decreases from the middle of the light exit surface 212 to the two sides; the top surface 2182 of the protrusions 218 The slope increases in the γ direction from the middle of the light exit surface 212 to both sides in order. It can be understood that the top surface 2182 of each of the protrusions 218 is also a curved surface having a predetermined curvature. The converging portion 216 is designed to have a plurality of protrusions 218 extending in the zigzag 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, thereby enabling The light emitted from the upper side is deflected by the two ends of the light-emitting surface 212 in the gamma direction, so that the light emitted by the external light source (not shown) is refracted by the lens unit 21 and then reflected in the direction of the ¥. The field shape becomes smaller. That is, the converging portion 216 compresses the range of the external light source (not shown) in the gamma direction. It can be seen that the lens unit 21 can be applied to the case where the shape of the light field in the χ direction is larger than the range in the Υ direction, thereby improving the utilization efficiency of the light emitted from the external source (not shown). #, By designing the curvature of different concave surfaces and the slope or curvature of the top surface of each convex, different radiation ranges can be obtained in the X direction and the Υ direction, respectively, to adapt to different practical needs. Referring to FIG. 6 , an optical lens 3 提供 according to a third embodiment of the present invention is configured to adjust an initial light field generated by an external light source to an illumination light field having a predetermined shape, and includes a plurality of lens units arranged in an array. 31. Referring to FIG. 7 to FIG. 9, each lens unit 31 includes a body 3〇1, and the body 301 has a light-incident surface 31〇, and a light-emitting surface 31〇 opposite to the human light surface 31〇.
11 (S 1324237 I · 光面312, 一用於擴展該光場沿x方向形狀之發散部314， 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31〇上，該發散部 314為沿該X方向延伸且向該本體3〇1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。 鲁 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X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χ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 場形狀於χ方向上之範圍大於γ方向上之範圍之情形，從 而提高了外部光源（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方 12 132423711 (S 1324237 I) a light surface 312, a diverging portion 314 for expanding the shape of the light field in the x direction, and a converging portion 316 for compressing the shape of the light field in the γ direction. The diverging portion 314 and the convergence portion Each of the 316 is formed on the light incident surface 31 , and the diverging portion 314 is a convex curved surface extending in the X direction and protruding outwardly from the body 3〇1. The convergence portion 316 extends in the γ direction and faces the body. a concave curved surface of the recessed surface, wherein the convex curved surface intersects the concave curved surface to form a composite curved surface on the light incident surface 310. In this embodiment, the concave curved surface intersects the concave curved surface In the formed composite curved surface, the diverging portion 314 can cause the light incident thereon to be radially deflected in the x-direction, so that the light emitted from the external light source (not shown) is refracted through the lens unit 31 in the X direction. The light field is enlarged in shape. That is, the diverging portion 314 expands the radiation range of the external light source (not shown) in the x-direction. The converging portion 316 can cause the light incident thereon to converge in the γ direction. Deflected so that an external light source (not shown) is emitted The light field shape in the γ direction is reduced by the light refracted 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. The figure shows the shape of the light field formed by the light emitted by the external light source via the optical lens 30. The radiation range of the light field in the x-direction is large in the radial direction, and the light intensity in the x-direction is large. The intensity of the light in the direction can be seen. The lens unit 31 can be applied to the case where the range of the light field shape in the χ direction is larger than the range in the γ direction, thereby improving the utilization of the light emitted by the external light source (not shown). Efficiency. In addition, by designing the curvature of different concave and convex surfaces, it can be used in the χ direction and γ square 12 1324237
I ‘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， 隹一與該入光面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 一底面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，該側面4184為與該入光 I 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之中間向兩側依次變小；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 1324237 i 1 •一頂面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 面412基本垂直的平面，該透鏡單元41内之光線經由該會 聚部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Y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Y方 向從該出光面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Y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410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 元41折射後於X方向上之光場形狀變大。也就是說，該發 散部414擴展了外部光源（圖未示）於X方向上之輻射範圍。 I 該會聚部416為具有複數個平行排佈之沿X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Y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鏡單 元41折射後於Y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Y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X方向 上之範圍大於Y方向上之範圍之情形，從而提高了外部光 14 1324237 - 源（圖未示）所發出光線之利用效率。另，藉由設計不同的每 個凹槽底面之斜率或曲率，與每個凸起頂面之斜率或曲 " 率，可於X方向與Y方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，若該出光面412為平面，而該發散部414 設置於入光面410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412為平面，而會聚部416 設置於入光面410上，則同樣可壓縮外部光源（圖未示）於Y ®方向上之輕射範圍。 請參見圖12，本發明第五實施例提供的光源模組50， 其包括一個本發明第一實施例提供的光學透鏡10，複數個 平行排佈之光學模組51及一個反射單元52。 每個光學模組51包括一個電路基片510及複數個光源 512，該複數個光源512均勻設置於該電路基片510上且與 該光學透鏡10中之透鏡單元11分別對應。 ^ 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520之底部設置有一個光學模組51， 故該複數個光源512即可形成複數個線性陣列。該光學模 組51之電路基片510與該長條形凹槽520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形凹 槽520之開口部分射出。長條形凹槽520之側壁522用來 反射設置於該長條形凹槽520底部之光源512所發出的 光，在此，可於該長條形凹槽520之側壁522上設置反射 膜以達到反光效果。 15 4 槽^複數^長條形凹槽52〇均句平行排列，該長條形凹 ‘為描二方向為x方向。該長條形凹槽520之橫截面 m他形狀，只要利於放置光學模組51於其底部 I可。該長條形凹槽520之側壁522可為平面或曲面-以 ，於反射光線。由於該長條形凹槽520之侧壁522之發光 作用，可使設置於該長條形凹槽520底部之光學模組51發 出的光線於Y方向上由該長條形凹槽52〇之側壁522向該 鲁長條形凹槽520之中間產生偏轉，從而使設置於該長條形 凹槽520底部之複數個光源512發出的光線經由該長條形 凹槽520之側壁522反射後由該長條形凹槽520之兩端向 其令間偏轉。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側壁52〇之曲率半 ^之不同，可對應使經其反射後之光線沿某一方向出射， 從而不同程度的壓縮複數個光源512於γ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 鲁條形凹槽520之侧壁522反射，以先壓縮複數個光源512 於Υ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X方向與γ方向上之輻射範圍，以得 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1〇所形成 的光場形狀相比’其於X方向上之輻射範圍比γ方向上之 輕射範圍更大且避免了眩光之產生。由此可見，該光源模 16 1324237 組50可應用於光場形狀於X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。 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50中之複數個光源512分別對應所 提供光學透鏡中之透鏡單元。當該複數個光源512中之一 個或少數幾個不能正常發光時’該一個或少數幾個不能正 吊發光之光源512不會對經由該長條形凹槽52〇之側壁522 反射後形成的輻射範圍或均勻度產生很大影響，從而保證 了光源模組50之穩定性。 综上所述，本發明確已符合發明專利之要件，遂依法 提出專利申請。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，皆 鲁應涵蓋於以下申請專利範圍内。 【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。 圖4係經由圖2中第一實施例光學透鏡形成的光場形 狀之效果圖。 圖5係本發明第二實施例光學透鏡中透鏡單元之結構 示意圖。 17 1324237 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 1324237 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 19I ‘Get different radiation ranges up to suit different practical needs. It can be understood that the diverging portion 314 and the converging portion 316 can also be formed on the light-emitting surface 312 to obtain different radiation ranges in the X direction and the Y direction, respectively, to adapt to different practical needs. Referring to Fig. 11, an optical lens according to a fourth embodiment of the present invention is for adjusting an initial light field generated by an external light source to a illuminating light field having a predetermined shape, which includes a plurality of lens units 41 arranged in an array. Each of the lens units 41 includes a body 401 having a light incident surface 410, a light exit surface 412 opposite to the light incident surface 410, and a diverging portion 414 for expanding the shape of the light field along the X direction. And a convergence portion 416 for compressing the shape of the light field in the Y direction. 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 bottom surface 4182 and a side adjacent to the bottom surface 4182. The bottom surface 4182 is a plane having a predetermined slope. The side surface 4184 is a plane substantially perpendicular to the light incident surface I. The light emitted by an external light source (not shown) enters the lens unit 41 via the diverging portion 414. 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 having 13 1324237 i 1 • a top surface 4192 and a top surface 4192 is adjacent to the side 4194. The top surface 4192 is a plane having a predetermined slope. The side surface 4194 is a plane substantially perpendicular to the light exit surface 412. Light rays in the lens unit 41 are emitted through the convergence portion 416. The plurality of protrusions 419 are generally periodically distributed. For example, the width of the protrusion 419 in the Y 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 Y direction is sequentially increased from the middle of the light exit 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 Y 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 that incident thereon The light in the X direction is deflected by the two ends of the light incident surface 410 in the X direction, so that the light emitted by the external light source (not shown) is refracted by the lens unit 41 and then reflected in the X direction. The field shape becomes larger. That is, the diverging portion 414 expands the radiation range of the external light source (not shown) in the X direction. I. The converging portion 416 is a protrusion 419 having a plurality of parallel arrangements extending in the X 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 Y direction, so that the light emitted by the external light source (not shown) is refracted by the lens unit 41. The shape of the light field in the Y direction becomes small. That is, the convergence portion 216 compresses the radiation range of the external light source (not shown) in the Y direction. It can be seen that the lens unit 41 can be applied to the case where the range of the light field shape in the X direction is larger than the range in the Y direction, thereby improving the utilization efficiency of the light emitted from the external light 14 1324237 - source (not shown). In addition, by designing the slope or curvature of the bottom surface of each groove, and the slope or curvature of each convex top surface, different radiation ranges can be obtained in the X direction and the Y direction, respectively. Adapt to different practical needs. It can be understood that if the light-emitting surface 412 is a flat surface and the diverging portion 414 is disposed on the light-incident surface 410, the radiation range of the external light source (not shown) in the X direction can also be expanded; if the light-emitting surface 412 is It is a flat surface, and the convergence portion 416 is disposed on the light incident surface 410, so that the light source range of the external light source (not shown) in the Y® direction can be compressed. Referring to FIG. 12, a light source module 50 according to a fifth embodiment of the present invention includes an optical lens 10 according to a first embodiment of the present invention, a plurality of optical modules 51 arranged in parallel, and a reflection unit 52. Each of the optical modules 51 includes a circuit substrate 510 and a plurality of light sources 512. The plurality of light sources 512 are uniformly disposed on the circuit substrate 510 and respectively correspond to the lens units 11 in the optical lens 10. The reflective unit 52 includes a plurality of continuously disposed elongated grooves 520. Each of the elongated grooves 520 is provided with an optical module 51 at the bottom, so that the plurality of light sources 512 can form a plurality of linear arrays. The circuit substrate 510 of the optical module 51 is connected to the bottom of the elongated recess 520. The light emitted by the plurality of light sources 512 of the optical module 51 is emitted through the opening portion of the elongated recess 520. The sidewall 522 of the elongated groove 520 is used to reflect the light emitted by the light source 512 disposed at the bottom of the elongated groove 520. Here, a reflective film may be disposed on the sidewall 522 of the elongated groove 520. Reach the reflective effect. 15 4 slots ^ complex number ^ long strip grooves 52 〇 uniform sentences arranged in parallel, the long concave ‘ is the x direction in the direction of the drawing. The elongated groove 520 has a cross-section m shape as long as it facilitates placement of the optical module 51 at its bottom. The sidewall 522 of the elongated groove 520 can be flat or curved to reflect light. Due to the illuminating effect of the side wall 522 of the elongated groove 520, the light emitted by the optical module 51 disposed at the bottom of the elongated groove 520 can be made by the elongated groove 52 in the Y direction. The sidewall 522 is deflected toward the middle of the elongated strip groove 520, so that the light emitted by the plurality of light sources 512 disposed at the bottom of the elongated groove 520 is reflected by the sidewall 522 of the elongated groove 520. Both ends of the elongated groove 520 are deflected toward each other. Here, the side wall 522 of the elongated groove 520 is different from the bottom of the elongated groove 520 or the curvature of the side wall 52 is half, which can correspond to the light reflected by the edge of the groove 520. The direction exits, thereby compressing the radiation range of the plurality of light sources 512 in the gamma direction to varying degrees. 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 long strip-shaped recess 520 to compress the radiation range of the plurality of light sources 512 in the x-direction, and further through the optical lens. The range of radiation of the plurality of light sources 512 in the X direction and the γ direction is adjusted to obtain different light field shapes. Referring to FIG. 13 , the light field shape formed by the plurality of light sources 512 is first reflected by the reflection unit 52 and then formed by the optical lens 1 , and the light field shape is simply through the optical lens in FIG. 4 . The shape of the light field formed by 1 相比 is larger than that of the radiation range in the X direction than the ray direction in the γ direction and the occurrence of glare is avoided. It can be seen that the light source module 16 1324237 group 50 can be applied to the case where the range of the light field shape in the X 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 plurality of light source modules 50 may be used in the light source module 50. Each of the light sources 512 corresponds to a lens unit in the provided optical lens. When one or a few of the plurality of light sources 512 are unable to normally emit light, the one or a few light sources 512 that are not capable of being illuminated are not formed after being reflected by the side walls 522 of the elongated grooves 52. The radiation range 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, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible 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. [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. Fig. 4 is a view showing the effect of the shape of the light field formed by the optical lens of the first embodiment of Fig. 2. Fig. 5 is a view showing the structure of a lens unit in an optical lens according to a second embodiment of the present invention. 17 1324237 Figure 6 is a schematic view showing the structure of an optical lens according to a third embodiment of the present invention. 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 116, 216, 316, 416 Bump 218, 419 Groove 418 18 1324237 Circuit Substrate 510 Light Source 512 Long Groove 520 Sidewall 522 Top surface 2182, 4192 side 2184, 4184, 4194 bottom surface 4182 19