200918951 九、發明說明： 【發明所屬之技術領域】 本發明涉及光學領域，尤其涉及一種光學鏡片。 【先前技術】 光學鏡片於製造過程中，需通過定心加工，使鏡片其 外徑及倒角被加工成特定形狀。 請參閱圖1，為先前技術提供之光學凹透鏡1，其包括 光學部2、非光學部3。兩個凹面2a、兩個承靠環面3a及 一個外徑邊緣3b。 從圖中可以發現其非光學部分3材料較多，事實上， 保證承靠穩固之條件下，並不需要如此多材料。富餘之材 料會造成鏡片製造成本增加，而且於定心加工中，為了使 鏡片其外徑及倒角被加工成特定形狀，需對鏡片進行切削 定形，此種形狀之毛胚餘量較多，會導致定心加工時間增 加，降低生產效率。 【發明内容】 鑒於此，有必要提供一種低成本、加工時間少之鏡片。 一種光學鏡片，該光學鏡片具有光學部及非光學部。 該光學部之兩個表面中至少有一個為凹面。所述非光學部 具有承靠環面及外徑邊緣。所述承靠環面成型於所述凹面 周緣，所述承靠環面連接於凹面與外徑邊緣之間，所述承 靠環面所在之平面與所述光學鏡片之光軸垂直。所述光學 鏡片具有一過渡圓臺侧面，所述過渡圓臺侧面之旋轉轴與 光學鏡片之光軸重合，所述過渡圓臺侧面連接於外徑邊緣 6 200918951 處之軸向厚度小 與承靠環面之間，所述光學鏡片外徑邊緣 於所述光學鏡片凹面周緣處之轴向厚度。 小於凹面周 ，從而節省 之時間，提 由於本發明凹透鏡之外徑邊緣處軸向厚度 緣處之軸向厚度，所以減少了非光學部之材料 了材料，而且縮短了定心加工中切除多餘材料 尚了生產效率。 【實施方式】 請參閱圖2,為本發明第一實施例提供之—種一風 片100，其包括光學部10，非光學部2〇。光學部勺=予鐘 凹面10a、兩個承靠環面2〇a、兩個過渡圓臺 ^，個 個外徑邊緣20c。 及— 所述光學鏡片1〇〇之材料可為玻璃，所述光學部1〇 於該光學鏡片100之中部，所述非光學部2〇位於該光學鏡 片外緣。所述兩個承靠環面2〇a分別成型於兩個凹面 l〇a周緣’所述過渡圓臺側面勘連接於所述承靠環面 2〇a’所述外徑邊緣2〇c連接於所述過渡圓臺側面2〇b。所 述承靠環面20a所在之平面與所述光學鏡片之光轴垂 直所述過渡圓$侧® 2〇b之旋轉軸與光學鏡片1〇〇之光 軸重合。所述光學鏡片_於外徑邊緣施餘向厚度^ 小於所述光學鏡片凹面取周緣處之軸向厚度hl。 所述凹面1G之曲度可根據成像需要加工成型。為了使 鏡片在鏡筒中承靠牢固，所述兩個承靠環面 20a之徑向寬 度Wl至少為G·5毫米。所述外經邊緣轴向厚度h2至少為 〇.5宅米。所述兩個過渡圓臺側面2诎於所述光學鏡片1〇〇 7 200918951 之徑向正投影之圓環徑向寬度W2大於所述承 二向K % ’所述過渡圓臺側面2〇b之母線為:線;： 之為/儘可能減少承靠部分之材料，所述兩個 系罪％面20之徑向寬度％為〇5毫#， 向厚度112為0.5毫米。 义外住邊緣軸 鱼第!3圖」’本發明第二實施例提供之光學鏡片200 /、弟貝鈀例美供之光學鏡片100基本相同，苴 在於:該光學鏡片200具有-個平面1施，-個凹：：二 „圖4’本發明第三實施例提供之光學鏡片· 與弟一貝施例提供之光學鏡片1〇〇基本相同，其不同之處 在於.該光學鏡片300之過渡圓臺側面220b之母線係凸圓 弧，由於採用凸圓弧，所以可以使鏡片3〇〇之非 部之加 強度更好。 請參閱圖5,本發明第四實施例提供之光學鏡片 與第一實施例提供之光學鏡片100基本相同，其=同之處 在於：該光學鏡片400之過渡圓臺側面32〇b之母線係凹= 弧，由於採用凹圓弧，所以可以使鏡片4〇〇之非光學部32〇 材料更少。 請參閱圖6’本發明第五實施例提供之光學鏡片5〇〇 與第二實施例提供之光學鏡片200基本相同，其不同之處 在於：該光學鏡片500之過渡圓臺側面420b之母線係凸圓 弧。 請參閱圖7,本發明第六實施例提供之光學鏡片6〇〇 與第二實施例提供之光學鏡片200基本相同，其不同之處 200918951 在於：該光學鏡片600之過渡圓臺侧面520b之母線係凹圓 弧。 由於本發明凹透鏡之外徑邊緣之轴向厚度小於凹面周 緣處之轴向厚度，所以減少了承靠部分之材料，從而節省 了材料，而且縮短了定心加工中切除多餘材料之時間，提 高了生產效率。 綜上所述，本發明符合發明專利要件，爰依法提出專 利申請。惟，以上所述者僅為本發明之較佳實施方式，本 發明之範圍並不以上述實施方式為限，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，皆應涵 蓋於以下申請專利範圍内。 【圖式簡單說明】 圖1為先前技術提供之光學凹透鏡片之剖面圖； 圖2為本發明第一實施例提供之光學鏡片之剖面圖； 圖3為本發明第二實施例提供之光學鏡片之剖面圖； 圖4為本發明第三實施例提供之光學鏡片之剖面圖； 圖5為本發明第四實施例提供之光學鏡片之剖面圖； 圖6為本發明第五實施例提供之光學鏡片之剖面圖； 圖7為本發明第六實施例提供之光學鏡片之剖面圖。 【主要元件符號說明】 光學部 10非光學部 20 凹面 10a承靠環面 20a 過渡圓台側面 20b外徑邊緣 20c200918951 IX. Description of the Invention: [Technical Field] The present invention relates to the field of optics, and in particular to an optical lens. [Prior Art] In the manufacturing process, the optical lens is subjected to centering processing so that the outer diameter and the chamfer of the lens are processed into a specific shape. Referring to Fig. 1, an optical concave lens 1 provided by the prior art includes an optical portion 2 and a non-optical portion 3. Two concave faces 2a, two bearing an annulus 3a and an outer diameter edge 3b. It can be seen from the figure that the non-optical portion 3 has a large amount of material, and in fact, it is not necessary to have so many materials under the condition of ensuring stability. The surplus material will increase the manufacturing cost of the lens, and in the centering process, in order to make the outer diameter and the chamfer of the lens into a specific shape, the lens needs to be cut and shaped, and the shape of the lens has a large margin. This will result in increased centering processing time and reduced production efficiency. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a lens that is low in cost and has a small processing time. An optical lens having an optical portion and a non-optical portion. At least one of the two surfaces of the optical portion is concave. The non-optical portion has a bearing abutment and an outer diameter edge. The bearing annulus is formed on the periphery of the concave surface, and the bearing annulus is coupled between the concave surface and the outer diameter edge, and the plane of the bearing annulus is perpendicular to the optical axis of the optical lens. The optical lens has a transitional circular table side surface, the rotation axis of the transition circular table side coincides with the optical axis of the optical lens, and the transition circular table side surface is connected to the outer diameter edge 6 200918951, the axial thickness is small and the bearing Between the annulus, the outer diameter edge of the optical lens is at an axial thickness at the periphery of the concave surface of the optical lens. Less than the concave circumference, thereby saving time, due to the axial thickness at the axial thickness edge of the outer diameter edge of the concave lens of the present invention, the material of the non-optical portion is reduced, and the excess material is cut in the centering process. Still have production efficiency. [Embodiment] Please refer to Fig. 2, which is a wind blade 100 according to a first embodiment of the present invention, which includes an optical portion 10 and a non-optical portion 2A. The optical part scoop = the concave surface 10a, the two bearing annulus 2〇a, the two transitional circular tables ^, and the outer diameter edges 20c. And - the material of the optical lens 1 可 may be glass, the optical portion 1 is located inside the optical lens 100, and the non-optical portion 2 is located at the outer edge of the optical lens. The two bearing abutments 2〇a are respectively formed on the circumferences of the two concave surfaces l〇a. The transitional circular table is connected to the outer peripheral edge 2〇c of the bearing annulus 2〇a' On the side of the transition truncated cone 2〇b. The plane of the bearing ring 20a is perpendicular to the optical axis of the optical lens. The axis of rotation of the transition circle $side® 2〇b coincides with the optical axis of the optical lens 1〇〇. The optical lens has a thickness hl at a peripheral edge of the outer diameter of the optical lens that is smaller than a concave edge of the optical lens. The curvature of the concave surface 1G can be formed according to the imaging needs. In order to secure the lens in the lens barrel, the two bearing abutment faces 20a have a radial width W1 of at least G·5 mm. The outer edge edge axial thickness h2 is at least 〇.5 house meters. The circular radial width W2 of the two transition truncated side faces 2 径向 to the radial orthographic projection of the optical lens 1〇〇7 200918951 is greater than the side of the transitional circular table 2〇b of the bearing two-direction K% ' The busbar is: wire;: the material of the bearing portion is reduced/as far as possible, the radial width % of the two sin% faces 20 is 〇5 milli#, and the thickness 112 is 0.5 mm. The optical lens 200 provided by the second embodiment of the present invention is substantially the same as the optical lens 100 provided by the second embodiment of the present invention. The optical lens 200 has a plane 1 ,,- a concave:: two „ FIG. 4′ The optical lens provided by the third embodiment of the present invention is substantially the same as the optical lens 1 提供 provided by the first embodiment, and the difference is that the optical lens 300 The bus bar of the side surface 220b of the transition truncated cone is a convex arc, and the convex arc is used, so that the strength of the non-part of the lens 3 can be improved. Referring to FIG. 5, the optical lens according to the fourth embodiment of the present invention The optical lens 100 provided by the first embodiment is substantially the same, which is the same as that: the busbar of the transitional circular table side 32〇b of the optical lens 400 is concave = arc, and the concave lens can be used to make the lens 4〇 The optical lens 5 提供 provided by the fifth embodiment of the present invention is substantially the same as the optical lens 200 provided by the second embodiment, and the difference is that the optical The transition truncated side 420b of the lens 500 The optical lens 6〇〇 provided by the sixth embodiment of the present invention is substantially the same as the optical lens 200 provided by the second embodiment, and the difference is 200918951 in the transition of the optical lens 600. The bus bar of the side surface 520b of the truncated cone is concave arc. Since the axial thickness of the outer diameter edge of the concave lens of the present invention is smaller than the axial thickness at the periphery of the concave surface, the material of the bearing portion is reduced, thereby saving material and shortening the centering. The time for cutting out excess material during processing increases the production efficiency. In summary, the present invention complies with the requirements of the invention patent, and the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and the present invention is The scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art to the spirit of the present invention are intended to be included in the scope of the following claims. FIG. 2 is a cross-sectional view of an optical lens according to a first embodiment of the present invention; FIG. 3 is a cross-sectional view of the optical lens according to the first embodiment of the present invention; 2 is a cross-sectional view of an optical lens according to a third embodiment of the present invention; FIG. 5 is a cross-sectional view of an optical lens according to a fourth embodiment of the present invention; 5 is a cross-sectional view of an optical lens according to a sixth embodiment of the present invention. FIG. 7 is a cross-sectional view of an optical lens according to a sixth embodiment of the present invention. [Description of Main Components] Optical portion 10 non-optical portion 20 concave surface 10a is supported by toroidal surface 20a Round table side 20b outer diameter edge 20c