201137285 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種照明系統的光源與反射面之配置 方法及其應用，特別是指一種具有共焦點的多數個橢圓反 射面之照明系統及其應用。 【先前技術】 在很多領域中，需要利用照明系統對一特定物體或一 特定區域照光，以觀察該特定物體或特定區域的表面形態 。例如在自動光學檢測系統中，需要利用照明系統對待測 物（例如電路板）照光，以能使影像擷取裝置擷取待測物表面 的影像。又例如外科醫療手術時，必須加強患者手術部位 的照明，以使醫師能夠清楚看見手術部位的身體組織，才 能做出正確的醫療判斷。此外，一般人在閲讀時，通常也 會使用檯燈來輔助加強閱讀區域的照明。 然而，現有的照明系統通常光線照射的角度僅侷限於 一小角度範圍，且因光線為直線前進的特性，若欲照明的 特定物體或特定區域的表面有凹凸起伏，則其凹處可能被 凸處遮擔而照不到光，在凹處即呈現陰影而無法被觀察。 或者’例#醫師手術時，I線可能被醫師手部或手術用具 所遮擋，而在患者手術部位造成局部陰影。同樣地，一般 檯燈必須調整位於使用者的特定方位，才能避免被身體= 播，但是因為空間的限制，並不是任何時候都能將檀燈放 置於最佳的位置，所以常常還是不能避免光線被遮擋的情 況。 3 201137285 【發明内容】 因此’本發明之一目的，即在提供一種針對一待照明 物體可提供較多角度照光之照明系統的光源與反射面之配 置方法。 本發明之另一目的，即在提供一種應用前述之配置方 法的用於自動光學檢查設備的照明系統。 本發明之又一目的’即在提供一種應用前述之配置方 法的照明裝置。 依據本發明之一較佳實施例’本發明照明系統的光源 與反射面之配置方法，係使照明系統具有共焦點的多數個 橢圓反射面，並於各橢圓反射面的另一焦點處設置一光源 ’使各光源朝向與其相對應的各橢圓反射面發光，光線經 由反射後，匯聚於共焦點處。 依據本發明之一具體例，本發明用於自動光學檢查設 備的照明系統，檢查設備包含一影像擷取裝置及一檢測區 ’影像摘取裝置對位於檢測區之一待測物擷取影像；照明 系統包含：二反射體及二光源。二反射體分別位於影像擷 取裝置至檢測區連線的兩側，各反射體具有一橢圓反射面 ’且二橢圓反射面共焦點，共焦點處位於檢測區。二光源 刀別對應各橢圓反射面位於其另一焦點處，各光源發射的 光線經由與其相對應的各橢圓反射面反射後，照射檢測區 0 依據本發明另一具體例’本發明照明裝置，包含：一 罩體及多數個光源。罩體具有共焦點的多數個橢圓反射面 201137285 。光源分別對應各橢圓反射面設置並位於其另一焦點處， 各光源發射的光線經由與其相對應的各橢圓反射面反射後 ，匯聚於共焦點處。 本發明之功效’利用共焦點的多數個橢圓反射面將不 同光源的光線匯聚於共焦點處’不僅能集中光線，增加照 明亮度’而且光線由不同角度入射共焦點處，可使位於共 焦點處附近的待照明物體，能得到較多種角度的照光，以 能在某一角度的光線被遮蔽時，還有其他角度的光線可提 供待照明物體的照光。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之一個較佳實施例及兩個具體例的詳細 說明中，將可清楚的呈現。 參閱圖1，本發明照明系統的光源與反射面之配置方法 之一較佳實施例，係使照明系統丨具有共焦點1〇的多數個 橢圓反射面11，並於各橢圓反射面n的另一焦點（即光源 12設置處’不另外標號）處設置—光源12，使各光源12朝 向與其相對應的各橢圓反射面u發光，光線經由反射後， 匯聚於共焦點10處。在本較佳實施例中，圖i所示四個橢 圓反射面11其f圖式方向左邊兩個橢圓反射面U的離心率 相同，與右邊兩個橢圓反射面u不同，但是全部橢圓反射 面11的離〜率也可以都相同或都不同’並不以本較佳實施 例為限亦即δ亥等橢圓反射面i i的離心率可以相同或未全 部相同（即其中可部分相同且部分不同或全部皆不同）。藉由 201137285 多個橢圓反射面11將光線匯聚於共焦點10處，可使光線由 不同的方向射向共焦點10處，因此位於共焦點1 〇附近的 物體可受到來自不同角度的光線照射，以避免單一角度光 線受到遮蔽即無法有效照明的缺點。橢圓反射面1 1的數量 可依據使用需求設置’以達到多角度的照明效果。 較佳地，可以使用發光二極體為各光源丨2的發光元件 ’各光源12可以具有至少一個發光二極體，例如可由多個 發光一極體組成燈條，各光源12所具有發光二極體的數量 可依據其對應的橢圓反射面11大小而定。採用發光二極體 具有節省能源、環保的優點，且橢圓反射面u具有將在其 一焦點發射的光線反射至另一焦點的特性，藉由共焦點的 多個橢圓反射面11，可匯集光線，而能增加光線的利用率 及照明亮度。 值得注意的是’為方便說明起見，圖1僅以平面的示 意圓說明橢圓反射面11與光源12的相對關係，於立體空間 ’橢圓反射面11可為橢圓柱的一部分或為橢圓球的一部分 參閱圖2,本發明應用前述照明系統的光源與反射面之 配置方法之第-具體例，為用於自動光學檢查設備的照明 系統2。檢查設備（圖中未標號）包含-影像掏取裝置31及一 檢測區3 2，影像掏取裝置^】 扳置31對位於檢測區32之一待測物 33擷取影像。照明系統2 _ 3 · 一反射體21及二光 22 。該二反射體21分別位於 京“冢擷取裝置31至檢測區32連 線I的兩側，各反射體2 町體21具有-橢圓反射面2n，且該二 201137285 擴圓反射面211共焦點’共焦點處位於檢測區3 3。該二光 源22分別對應各橢圓反射面21位於其另一焦點處，在本 具體例中’各光源22與其相對應的糖圓反射面211分別位 於影像擷取裝置31至檢測區32連線I的兩側，各光源22 發射的光線經由與其相對應的各橢圓反射面211反射後，照 射檢測區32(即兩摘圓反射面211的共焦點處）。待測物33 位於檢測區32即可受到來自不同方向（即不同角度）的光線 照射’可以使待測物3 3表面輪廓凹凸處能利用不同角度的 光線照射，避免凹處被遮光造成檢測的死角。在本具體例 中’兩個橢圓反射面211的離心率相同，各光源22具有多 個發光二極體（圖中未示出），發光二極體排列形成燈條的形 式朝向相對的橢圓反射面211設置，圖2為側視示意圖，橢 圓反射面211及發光一極體燈條沿垂直圖面方向延伸，能在 檢測區32上形成直條形的照光範圍，適用於檢測印刷電路 板的電路。 參閱圖3，本發明應用前述照明系統的光源與反射面之 配置方法之第二具體例，為一照明裝置4，包含：一罩體 41及多數個光源42。罩體41具有共焦點40的多數個橢圓 反射面411。各光源42分別對應各機圓反射面411設置並 位於其另一焦點（即光源42處，不另外標號）處，各光源42 發射的光線經由與其相對應的各橢圓反射面411反射後，匯 聚於共焦點40處。在本具體例中，橢圓反射面41丨的離心 率皆不同，各光源42具有多個發光二極體（圖中未示出）， 發光二極體排列形成燈條的形式朝向相對的橢圓反射面4 i 1 201137285 設置’光源42的種類及出光方向可以依據需求調整。照明 裝置4可適用於作為一般檯燈、手術用檯燈等需要集中照 光的照明用具，其能將多個光源42的光聚集在特定區域， 以.提供較佳的照明亮度，且具有多角度的照光，可以避免 單一角度光線被遮擋即照不到光的情況。 綜上所述，本發明照明系統的光源與反射面之配置方 法能集中光線以提高照明亮度，且可以提供較多角度的照 光’可以避免單一角度光線被遮擋即照不到光的情況，故 確實能達成本發明之目的。 惟以上所述者’僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明申請專利 範®及發明說明内容所作之簡單的等效變化與修飾’皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1是一示意圖，說明本發明照明系統的光源與反射 面之配置方法之一較佳實施例； 圖2是一側視示意圖，說明本照明系統的光源與反射 面之配置方法之第一具體例，應用於自動光學檢查設備的 照明系統；及 圖3是一剖視示意圖，說明說明本照明系統的光源與 反射面之配置方法之第二具體例，應用於照明裝置。 201137285 【主要元件符號說明】 1…… •…照明系統 32····. 檢測£ 10••… •…共焦點 33····. •…待測物 11 ·.·.· •…橢圓反射面 4…… •…照明裝置 12..... —光源 40··.. …· ·共焦點 2…… •…照明系統 41 ·.··· …·罩體 21..... •…反射體 411… …·橢圓反射面 22···.· —光源 42·.·.· —光源 31···.. •…影像擷取裝置201137285 VI. Description of the Invention: [Technical Field] The present invention relates to a method for arranging a light source and a reflecting surface of an illumination system and an application thereof, and more particularly to a lighting system with a plurality of elliptical reflecting surfaces having a confocal point and Its application. [Prior Art] In many fields, it is necessary to illuminate a specific object or a specific area with an illumination system to observe the surface morphology of the specific object or a specific area. For example, in an automated optical inspection system, an illumination system is required to illuminate a test object (e.g., a circuit board) to enable the image capture device to capture an image of the surface of the object to be tested. For example, in surgical operations, it is necessary to enhance the illumination of the surgical site of the patient so that the physician can clearly see the body tissue of the surgical site in order to make a correct medical judgment. In addition, when reading, the desk lamp is usually used to help enhance the illumination of the reading area. However, in the conventional illumination system, the angle of the light illumination is generally limited to a small angle range, and because the light is linearly advanced, if the surface of the specific object or the specific area to be illuminated has irregularities, the concave portion may be convex. The cover is covered and the light is not visible, and the shadow appears in the recess and cannot be observed. Alternatively, the 'line' may be obscured by the physician's hand or surgical tool while the patient's surgical site is partially shadowed. Similarly, the general desk lamp must be adjusted to the specific orientation of the user in order to avoid being broadcast by the body. However, due to space constraints, the lamp can not be placed in the best position at any time, so it is often impossible to avoid the light being Occlusion. 3 201137285 SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a method of arranging a light source and a reflecting surface for an illumination system that provides more illumination for an object to be illuminated. Another object of the present invention is to provide an illumination system for an automated optical inspection apparatus applying the aforementioned configuration method. A further object of the present invention is to provide a lighting device to which the aforementioned configuration method is applied. According to a preferred embodiment of the present invention, a method for arranging a light source and a reflecting surface of an illumination system according to the present invention is such that the illumination system has a plurality of elliptical reflecting surfaces having a confocal point, and one of the other focal points of each elliptical reflecting surface is disposed. The light source 'illuminates the respective light sources toward the elliptical reflecting surfaces corresponding thereto, and the light rays are reflected and concentrated at the confocal point. According to a specific embodiment of the present invention, the present invention is applied to an illumination system of an automatic optical inspection apparatus, the inspection apparatus comprising an image capture device and a detection area 'image pickup device for capturing an image of the object to be tested located in the detection area; The lighting system comprises: two reflectors and two light sources. The two reflectors are respectively located on both sides of the connecting line of the image capturing device to the detecting area, each reflector has an elliptical reflecting surface ′ and the two elliptical reflecting surfaces are in focus, and the confocal point is located in the detecting area. The two light source blades are located at the other focus of the respective elliptical reflecting surfaces, and the light emitted by each of the light sources is reflected by the elliptical reflecting surfaces corresponding thereto, and the illumination detecting area 0 is irradiated according to another embodiment of the present invention. Includes: a cover and a number of light sources. The cover has a plurality of elliptical reflecting surfaces with a confocal point 201137285 . The light sources are respectively disposed corresponding to the elliptical reflecting surfaces and located at the other focus thereof, and the light beams emitted by the respective light sources are reflected by the respective elliptical reflecting surfaces corresponding thereto, and are concentrated at the confocal point. The effect of the invention 'Using a plurality of elliptical reflecting surfaces of the confocal point to converge the light of different light sources at the confocal point' can not only concentrate the light, increase the brightness of the illumination, but also the light is incident at different points from the confocal point at different angles, so that the confocal point can be located The nearby objects to be illuminated can obtain illumination from a variety of angles, so that when the light of a certain angle is blocked, there are other angles of light to provide illumination of the object to be illuminated. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments of the invention. Referring to FIG. 1, a preferred embodiment of a method for arranging a light source and a reflecting surface of an illumination system of the present invention is such that the illumination system has a plurality of elliptical reflecting surfaces 11 having a confocal angle of 1 ,, and another elliptical reflecting surface n A focus (i.e., the light source 12 is disposed at 'not otherwise labeled') is provided with a light source 12 that causes each of the light sources 12 to emit light toward respective elliptical reflecting surfaces u corresponding thereto, and the light rays are reflected and concentrated at the confocal point 10. In the preferred embodiment, the four elliptical reflecting surfaces 11 shown in FIG. 1 have the same eccentricity of the two elliptical reflecting surfaces U on the left side of the f-direction, and are different from the two elliptical reflecting surfaces u on the right side, but all elliptical reflecting surfaces The deviation ratios of 11 may also be the same or different 'not limited to the preferred embodiment, that is, the eccentricity of the elliptical reflection surface ii such as δ hai may be the same or not all the same (ie, the portions may be partially identical and partially different) Or all are different). By illuminating the light at the confocal point 10 by multiple elliptical reflecting surfaces 11 of 201137285, the light can be directed from different directions to the confocal point 10, so that objects located near the confocal point 1 可 can be illuminated by light from different angles. To avoid the disadvantage that the single angle of light is blocked and cannot be effectively illuminated. The number of elliptical reflecting surfaces 1 1 can be set according to the use requirements to achieve multi-angle lighting effects. Preferably, the light-emitting diodes can be used as the light-emitting elements of the respective light sources '2. Each light source 12 can have at least one light-emitting diode. For example, the light-emitting diodes can be composed of a plurality of light-emitting diodes, and each light source 12 has two light-emitting diodes. The number of poles may depend on the size of its corresponding elliptical reflecting surface 11. The use of the light-emitting diode has the advantages of energy saving and environmental protection, and the elliptical reflecting surface u has the characteristic of reflecting the light emitted at one focus thereof to the other focus, and the light can be collected by the plurality of elliptical reflecting surfaces 11 of the confocal point. , can increase the utilization of light and the brightness of the lighting. It should be noted that, for convenience of description, FIG. 1 only illustrates the relative relationship between the elliptical reflecting surface 11 and the light source 12 in a planar schematic circle. In the three-dimensional space, the elliptical reflecting surface 11 may be a part of an elliptical cylinder or an elliptical sphere. Referring in part to Fig. 2, the first embodiment of the present invention for applying the light source and the reflecting surface of the illumination system is an illumination system 2 for an automatic optical inspection apparatus. The inspection device (not shown) includes an image capturing device 31 and a detecting area 3 2, and the image capturing device is configured to capture an image of the object to be tested 33 located in the detecting area 32. Lighting system 2 _ 3 · One reflector 21 and two light 22 . The two reflectors 21 are respectively located on both sides of the line "the connection device 31 of the capture device 31 to the detection area 32, and each of the reflectors 2 has an elliptical reflection surface 2n, and the two 201137285 confocal reflectors 211 are confocal. The common focus is located in the detection area 33. The two light sources 22 are respectively located at the other focus of the elliptical reflection surface 21, and in this embodiment, the respective light source 22 and the corresponding sugar circle reflection surface 211 are respectively located in the image. The light emitted by each light source 22 is reflected by the elliptical reflecting surface 211 corresponding thereto, and then the illumination detecting area 32 (ie, the confocal point of the two rounded reflecting surfaces 211) is taken from the device 31 to the detecting area 32. The object to be tested 33 is located in the detection area 32 and can be irradiated with light from different directions (ie, different angles). The surface contour of the object to be tested 3 3 can be irradiated with light of different angles to prevent the concave portion from being blocked by light. In this specific example, the eccentricity of the two elliptical reflecting surfaces 211 is the same, each light source 22 has a plurality of light emitting diodes (not shown), and the light emitting diodes are arranged to form a light strip in a relative orientation. Ellipse The surface 211 is disposed, and FIG. 2 is a side view. The elliptical reflecting surface 211 and the light emitting body light strip extend in a vertical plane direction, and can form a straight strip illumination range on the detecting area 32, which is suitable for detecting a printed circuit board. Referring to Fig. 3, a second specific example of the method for arranging the light source and the reflecting surface of the illumination system of the present invention is a lighting device 4 comprising a cover 41 and a plurality of light sources 42. The cover 41 has a confocal point. A plurality of elliptical reflecting surfaces 411 of 40. Each of the light sources 42 is disposed corresponding to each of the circular reflecting surfaces 411 and located at another focus thereof (ie, the light source 42 is not otherwise labeled), and the light emitted by each of the light sources 42 is corresponding thereto. After the elliptical reflecting surfaces 411 are reflected, they are concentrated at the confocal point 40. In this specific example, the eccentricity of the elliptical reflecting surfaces 41丨 is different, and each of the light sources 42 has a plurality of light emitting diodes (not shown). The light-emitting diodes are arranged to form a light bar toward the opposite elliptical reflecting surface 4 i 1 201137285. The type of the light source 42 and the light-emitting direction can be adjusted according to requirements. The lighting device 4 can be applied as a general table. An illumination device that requires concentrated illumination, such as a surgical table lamp, can concentrate the light of the plurality of light sources 42 in a specific area to provide better illumination brightness and have multiple angles of illumination, thereby avoiding obstruction of a single angle of light. In summary, the light source and reflective surface arrangement method of the illumination system of the present invention can concentrate light to improve illumination brightness, and can provide more angles of illumination' to avoid single angle light being blocked. The present invention can be achieved in the light of the present invention. However, the above description is merely a preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, the patent application is based on the present invention. The simple equivalent changes and modifications made by Fan® and the description of the invention are still within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a preferred embodiment of a method for arranging a light source and a reflecting surface of an illumination system of the present invention; FIG. 2 is a side view showing a light source and a reflecting surface of the lighting system. A first specific example of a configuration method applied to an illumination system of an automatic optical inspection apparatus; and FIG. 3 is a cross-sectional view illustrating a second specific example of a method of arranging a light source and a reflection surface of the illumination system, which is applied to a lighting apparatus . 201137285 [Explanation of main component symbols] 1... •...Lighting system 32····. Detection £ 10••... •...Confocal 33····.....Test object 11 ····· •...Oval Reflecting surface 4... •...Lighting device 12... —Light source 40··.....·Confocal point 2... •...Lighting system 41 ·.····· Cover 21..... •...reflector 411...··elliptical reflecting surface 22·····—light source 42·.·.·—light source 31···.. •...image capturing device