200843995 九、發明說明： 【發明所屬之技術領域】 ~ 本案係關於自行車燈，更詳而言之，係一種輔助LED光源向外照射的鏡 _ 座。 【先前技術】 LED因為具有高亮度、體積小、省電等優點，已被廣泛的應用於燈具上 做為知、明光源。自行車燈即為應用之一種。一般自行車騎士需要的車燈是 C 一個分佈寬廣但照射角度不高的光型，中心亮度約10Lux以上，因此自行車 頭燈需求的綜合配光為中心夠亮、寬廣、扁平的配光。 而一種傳統型式的自行車燈輔助LE1D光源向外射出的燈罩結構，大致上 、 包括一反射杯、一LED光源以及一前罩。該反射杯内層為一反射材質，用以 • 反射LED光源；該前罩蓋合於該反射杯前端，可依照該車燈所欲產生之出光 光形，調整使用凸透鏡、半凸透鏡或平面透鏡等。上述反射杯具有單一曲 面，led光源的發射面設置向前，極小部份的光源是透過該前罩而直射出 ί 去，大部份的光源經由反射杯予以反射後向前罩射出。因此，該等LE]D車燈 產生一個照明範圍，該照明範圍中的照明亮度大致上是相同的，所以不具 有中心夠亮、照幅寬度、光形扁平的理想配光。 【發明内容】 本發明之主要目的係在提供一種自行車燈之透光鏡座，該透光鏡座可 使自行車燈之照明光線具有匯聚光束以及擴散光束，可形成照明亮度較高 的配光中心並顧及配光之寬廣度，提昇照明亮度且擴大照明範圍。此外， 本發明之自行車頭燈之配光為扁平光型。 5 200843995 欲達上述目的所採取的技術手段係採用全内反射原理(tir從 Collmator)來做光學設計，以複數個反射杯組合構成一透光鏡座，該透光 ' 鏡座的中央具有一光源定位部，該光源定位部供至少一LED光源設置；嗲 複數個反射杯分別具有依非旋轉對稱曲面方程式所設計之曲面，以調整該 LED光源之光束。 上述之複數個反射杯係以非旋||對稱的曲面設計方程式設計其曲面， 可先分別用於產生個別不同的配光效果，再堆疊出同時具有需求多元與多 樣的總配光。一較佳的貫配樣態該透光鏡座將一LED光源調整為左右分佈 夠寬廣、中心夠亮，以及扁平的光型的總配光。 【實施方式】 本發明車父佳貫施例係採用一顆由Lumi Leds公司研發出的200843995 IX. INSTRUCTIONS: [Technical field to which the invention pertains] ~ This is a bicycle light, and more specifically, a mirror illuminator that assists the LED light source to illuminate outward. [Prior Art] Because of its advantages of high brightness, small size, and power saving, LED has been widely used as a light source for lighting and lighting. A bicycle light is one of the applications. Generally, the bicycle light required by a bicycle rider is a light type with a wide distribution but a low illumination angle. The center brightness is about 10 Lux or more. Therefore, the comprehensive light distribution required for the bicycle headlight is bright, wide and flat. A traditional type of bicycle lamp assists the LE1D light source to emit an outwardly directed lampshade structure, which generally comprises a reflector cup, an LED light source and a front cover. The inner layer of the reflector cup is a reflective material for reflecting the LED light source; the front cover is attached to the front end of the reflector cup, and the convex lens, the semi-convex lens or the plane lens can be adjusted according to the light shape of the light generated by the lamp. . The reflector cup has a single curved surface, and the emitting surface of the LED light source is disposed forward. A very small portion of the light source is directly emitted through the front cover, and most of the light source is reflected by the reflective cup and then emitted to the front cover. Therefore, the LE]D lamps produce an illumination range in which the illumination brightness is substantially the same, so that there is no ideal light distribution with a bright center, a wide width, and a flat shape. SUMMARY OF THE INVENTION The main object of the present invention is to provide a light-transmitting lens holder for a bicycle lamp, which can make a light beam of a bicycle lamp have a concentrated beam and a diffused light beam, and can form a light distribution center with high illumination brightness. And take into account the breadth of the light distribution, enhance the brightness of the lighting and expand the range of illumination. Further, the light distribution of the bicycle headlight of the present invention is a flat light type. 5 200843995 The technical means adopted for the above purpose is to use the principle of total internal reflection (tir from Collmator) for optical design, and a plurality of reflecting cups are combined to form a transparent mirror holder. The center of the transparent 'mirror holder has one a light source positioning portion, wherein the light source positioning portion is provided for at least one LED light source; and the plurality of reflective cups respectively have a curved surface designed according to a non-rotational symmetric surface equation to adjust the light beam of the LED light source. The plurality of reflecting cups described above are designed with non-rotating | symmetrical curved surface design equations, and can be separately used to generate individual different light distribution effects, and then stacked to have a total light distribution with multiple and multiple demands. A preferred configuration of the light-transmitting lens holder adjusts an LED light source to have a wide distribution of the left and right sides, a bright enough center, and a flat light-type total light distribution. [Embodiment] The invention is based on the development of a Lumi Leds company.
Luxeon( 1W)系列產品中 Lambertian Type的白光LED。Lambertian LED在水平方向光束分佈角度達± loo度、在垂直方向光束分佈角度也達 ± 100度，因此LED光源需經由適當的光學設計將光束有效的調控為中心夠 亮、寬廣、扁平的光型。本發明採用全内反射原理(TIR c〇llimat〇r)來 做光學没計’因為TIR or Collimator可將涵蓋Lambertian LE1D所有方位的 光束，可使光源利用率達到最大。 以一個TIR來做光學設計時，當希望配光中心夠亮時（1〇 Lux以上）， 則需產生匯聚光束，但卻無法兼顧光型左右分佈的寬廣度，如第一圖，雖 然中心亮度超過10 Lux以上，但左右分佈僅約12度。當希望配光夠寬廣時， 則需產生擴散光束，往往犧牲中心最亮值，如第二圖，雖然左右分佈可達 6 200843995 18度’但中心亮度僅4·3 Lux。 因此本發明將以複數個TIR or Collimator的組合設計方式以增加配光上 的彈性。其主要技術手段係以複數個反射杯組合構成一透光鏡座，該透光 鏡座的中央具有一光源定位部，該光源定位部供至少一LED光源設置丨該 複數個反射杯分別具有依非旋轉對稱曲面方程式所設計之曲面，以調整該 LED光源之光束。以下所述者係以三個TIR〇r c〇mmat〇r的組合設計方式為 例說明該透光鏡座之設計。 如第三至六圖，本案透光鏡座100係為一體成型之結構，可區分為大全 反射杯10、中全反射杯11、小全反射杯12、光源定位部13及折射透鏡14。 該透光鏡座100係以該光源定位部13的中心為圓心，向外依序為上述的 小全反射杯12、中全反射杯π、大全反射杯1〇，所述的折射透鏡14位於該 光源定位部13前方。小全反射杯12構成該透光鏡座1〇〇的上、下部，該大全 反射杯10構成該透光鏡座1〇〇的左、右部，中全反射杯u則介於大全反射杯 10以及小全反射杯12之間。 上述之大、中、小全反射杯10、η、12可先分別用於產生個別不同的 配光效果，再堆疊出同時具有需求多元與多樣的總配光，例如有的用於擴 散光型設計、有的用於集中光型設計。堆疊出的總配光因此可產生左右分 佈夠寬廣、中心夠亮之一般自行車頭燈需求的綜合配光。 由上述可知TIR or Collimator的全反射杯及折射透鏡需兼負不同的配光 斗寸性’因此其曲面設計必須具備有很好的配光能力，而本發明採用非旋轉 對稱的曲面設計方程式來設計TIR or Collimator的全反射杯及折射透鏡。 7 200843995 非方疋轉對稱的曲面設計方程式z _ r二^^^ 其中 K^) = kxc〇s4/n0 + kYsin4/^e z:光軸方向 厂··徑向 ^角度 及：頂點曲率半徑 / 禽：圓錐常數（Conic constant) 下標X:水平軸 下標Y:垂直軸 乃為可調整的係數’決定邊界效應延伸至内部的多募，當Λ愈大時々χ效應變 大而如效應變小，為了增加控制光線分佈的彈性。若仍关Λγ便可分別控制 A及左γ的個別效應（i.e. /7χ—左X與/?γ->々γ)。 ( 小全反射杯12設計的配光如第七圖，左右分佈可達a度，上下分佈7 度，在三個配光中分佈最寬廣，屬於擴散型的配光設計。 中全反射杯11設計的配光如第八圖，上下左右分佈皆約6度，最亮點43 Lux位於中心，屬於集中型的配光設計。 大全反射杯1〇設計的配光如第九圖，上下左右分佈皆約5度，最亮可達 8·1 Lux，在三個配光中最亮的一塊，屬於集中型的配光設計。 折射透鏡14設計的配光如第十圖，左右分佈約12度，上下分佈7度，屬 於擴散型的配光設計。 8 200843995 左右分佈可達18度，上下分佈8度，最亮Lambertian Type white LED in the luxeon ( 1W) series. The Lambertian LED has a horizontal beam distribution angle of ± loo and a vertical beam distribution angle of ± 100 degrees. Therefore, the LED light source needs to be properly optically controlled to center the light, wide, and flat light. . The invention uses the principle of total internal reflection (TIR c〇llimat〇r) for optical optics. Because TIR or Collimator can cover all directions of the Lambertian LE1D beam, the source utilization can be maximized. When using a TIR for optical design, when you want the light distribution center to be bright enough (1〇Lux or more), you need to generate a concentrated beam, but you can't balance the width of the left and right distribution of the light type, as shown in the first picture, although the center brightness More than 10 Lux, but the left and right distribution is only about 12 degrees. When it is desired to have a wide distribution of light, a diffused beam is required, often at the center of the brightest value, as shown in the second figure, although the left and right distribution can reach 6 200843995 18 degrees' but the central brightness is only 4·3 Lux. Therefore, the present invention will be designed in a combination of a plurality of TIR or Collimator to increase the elasticity of the light distribution. The main technical means comprises a plurality of reflector cups to form a light-transmissive lens holder. The center of the light-transmissive lens holder has a light source positioning portion, and the light source positioning portion is provided for at least one LED light source, and the plurality of reflective cups respectively have a A curved surface designed by a non-rotationally symmetric surface equation to adjust the beam of the LED source. The design of the light-transmitting lens holder is described by taking a combination design of three TIR〇r c〇mmat〇r as an example. As shown in the third to sixth figures, the light-transmitting lens holder 100 of the present invention is an integrally formed structure, and can be divided into a large total reflection cup 10, a medium total reflection cup 11, a small total reflection cup 12, a light source positioning portion 13, and a refractive lens 14. The light-transmitting lens holder 100 is centered on the center of the light source positioning portion 13, and is outwardly arranged as the small total reflection cup 12, the middle total reflection cup π, and the large total reflection cup 1〇, and the refractive lens 14 is located. The light source positioning portion 13 is forward. The small total reflection cup 12 constitutes an upper part and a lower part of the light-transmitting lens holder 1〇〇, the large total reflection cup 10 constitutes the left and right parts of the transparent mirror holder 1〇〇, and the total reflection cup u is interposed between the large reflection cups 10 and between the small total reflection cups 12. The above-mentioned large, medium and small total reflection cups 10, η, 12 can be respectively used to generate individual different light distribution effects, and then stacked to have a total light distribution with multiple and diverse demands, for example, for diffused light type. Designed and used for concentrated light design. The total light distribution that is stacked can thus produce a comprehensive light distribution that is broad enough for the general purpose of the bicycle headlights to be bright enough. It can be seen from the above that the TIR or Collimator's total reflection cup and refractive lens need to have different light distribution dimensions. Therefore, the curved surface design must have a good light distribution capability, and the present invention adopts a non-rotationally symmetric surface design equation. Design TIR or Collimator's total reflection cup and refractive lens. 7 200843995 Non-square symmetry surface design equation z _ r二^^^ where K^) = kxc〇s4/n0 + kYsin4/^ez: optical axis direction factory · radial ^ angle and: vertex radius of curvature / Avian: Conic constant Subscript X: Horizontal axis subscript Y: Vertical axis is an adjustable coefficient 'Determining the boundary effect to extend to the internal multi-raise. When the Λ is larger, the 々χ effect becomes larger and the effect becomes Small, in order to increase the flexibility of controlling the distribution of light. If you still close γ, you can control the individual effects of A and left γ (i.e. /7χ-left X and /?γ->々γ). (The light distribution of the small total reflection cup 12 is as shown in the seventh figure. The left and right distribution can reach a degree, the upper and lower distribution is 7 degrees, and the distribution is the widest among the three light distributions. It belongs to the diffused type of light distribution design. The design of the light distribution is as shown in the eighth picture, about 6 degrees above and below, and the brightest point 43 Lux is located at the center, which belongs to the centralized light distribution design. About 5 degrees, the brightest is up to 8. 1 Lux, the brightest piece among the three light distributions, is a concentrated light distribution design. The light distribution of the refractive lens 14 is as shown in the tenth figure, about 12 degrees left and right. The upper and lower distribution is 7 degrees, which belongs to the diffused type of light distribution design. 8 200843995 The distribution is up to 18 degrees, and the upper and lower distribution is 8 degrees, the brightest
寬3.5公分、厚L5公分，所以本案透光鏡座係為爲平外型， ’配光亦呈現扁平 堆疊出的總配光如第十一圖， 15·3 Lux位於中心點，所以總配来 的光型，十分有利於一般自行車有限的空間來安裝。 雖;、沐案疋以-個最佳貫施例做說明，但精於此技藝者能在不雌本 案精神與鱗下做各種不同形式的改變。以上所舉實施例翻以說明本案 而已’非用以關本案之範圍。舉凡不違本案精神職事的讎修改或變 化，倶屬本案申請專利範圍。 【圖式簡單說明】 第一圖為以一個TIR設計之車燈鏡座配光結果，其具有匯聚光束，但左右寬 廣度不足。 第二圖為以一個TIR設計之車燈鏡座配光結果，其具有擴散光束，但中心亮 度不足。 第三圖為本案透光鏡座之前視外觀圖。 第四圖為本案透光鏡座之後視外觀圖。 第五圖為本案透光鏡座之前視圖。 第六圖為本案透光鏡座之剖面圖。 第七圖為本案透光鏡座小全反射杯之配光結果。 9 200843995 第八圖為本案透光鏡座中全反射杯之配光結果。 第九圖為本案透光鏡座大全反射杯之配光結果。 第十圖為本案透光鏡座之折射透鏡之配光結果。 第Η^ —圖為本案透光鏡座之總配光結果。 【主要元件符號說明】 100-透光鏡座 10- 大全反射杯 11- 中全反射杯 12- 小全反射杯 13- 光源定位部 14-折射透鏡The width is 3.5 cm and the thickness is L5 cm. Therefore, the light-transmissive mirror base of this case is flat and the 'light distribution is also flat. The total light distribution is as shown in the eleventh figure. 15·3 Lux is at the center point, so the total distribution The coming light type is very conducive to the limited space of general bicycles to install. Although; Mu, the case is explained by a best example, but those skilled in the art can make various changes in the spirit and scale of the non-female case. The above examples are presented to illustrate the case and have not been used to cover the scope of the case. Any amendment or change that does not violate the spirit of the case is the scope of patent application in this case. [Simple description of the diagram] The first picture shows the light distribution result of the lamp holder with a TIR design, which has a concentrated beam, but the width of the left and right is insufficient. The second picture shows the light distribution of a lamp holder with a TIR design, which has a diffused beam but insufficient center brightness. The third figure is a front view of the light-transmitting lens holder of the present case. The fourth picture is a rear view of the light-transmitting lens holder of the present case. The fifth picture is the front view of the light-transmitting lens holder of this case. The sixth picture is a cross-sectional view of the light-transmitting lens holder of the present case. The seventh picture shows the light distribution result of the small total reflection cup of the light-transmitting mirror base of the present case. 9 200843995 The eighth picture shows the light distribution result of the total reflection cup in the transparent mirror base of this case. The ninth picture shows the light distribution result of the large reflection cup of the light-transmitting mirror base. The tenth figure shows the light distribution result of the refractive lens of the transparent mirror holder of the present case. The first Η ^ - Figure is the total light distribution result of the light-transmitting mirror base of this case. [Main component symbol description] 100-light mirror holder 10- large reflection cup 11- medium total reflection cup 12- small total reflection cup 13- light source positioning portion 14-refractive lens