1252934 九、發明說明： 【發明所屬之技術領域】 •鏡筒内緣，而能精準對 本^係有i種塑膠射出鏡片之技術領域 種錯由外凸之多數定位塊來靠抵於 位於影像擷取鏡頭之鏡片。 【先前技術】1252934 IX. Description of the invention: [Technical field of invention] • The inner edge of the lens barrel, and the technical field of the type of plastic injection lens that can be accurately applied to the lens is offset by the majority of the positioning block. Take the lens of the lens. [Prior Art]
如第7圖與第8圖所示，為習用之鏡 塑膠射出成型方式萝楫σρΐΛ/ 、係由 、、彖8 1係設計成錐狀， 、 形成拔权斜度<9，且於該鏡只β 之週緣8 1設有一截自8 9分與 片8 截角8 2處設有一注料部 3，以於射出成型時供物料注入之用。 〜該鏡：8週緣81係設計成錐狀以形成拔模斜度，是 =要之设叶，否則在鏡片被射出成型後將有難以退模或 是強迫退模而損傷鏡片的問題。但是由於週緣8 1被設 計=錐狀’因此在將鏡片8組裝至鏡筒9時，週緣8 ^ 鏡筒9内緣9 1僅有線狀之接觸，而容易造成鏡片8偏斜 的現象，如第9圖所示，如此—來，鏡片8之轴線a便會 偏斜而無法對準影像感測元件9 2之感測區域中心線Α γ 這將會造成影像失焦等問題。 而於鏡片8週緣8 1設置截角8 2係為避免注料部8 3 (俗稱蒂頭）被剪切後凸出於週緣8丄所形成之圓週之 外而影響鏡片之組裝工作，換言之截角8 2是—項必要的 5 1252934 退讓設計。但是截角8 2的設計會導致射出鏡片用之模穴 7 1 (如第1 0圖所示）變成非圓形之形態，而需由電腦 程式模擬出模穴7 1之形狀，再驅動刀具6於模具7中加 工來完成模穴7 1，但是經由電腦程式模擬之圓弧加工路 徑其真圓度不易確保，而可能導致製造出來的鏡片8在組 裝時無法精準對位的問題。 故而，前述之鏡片結構實有加以改進之必要，以期能 達到精準對位之功效。 【發明内容】 本發明之主要目的，在於解決上述的問題而提供一種 可精準對位於影像擷取鏡頭之鏡片，其主要係於該本體週 緣凸設有三個以上之定位塊，而各定位塊之外緣係與鏡片 本體的軸向平行延伸，且各定位塊之外緣距離本體之軸心 最遠處係位在以本體軸心為圓心的同一圓周上，而可由各 定位塊平行於本體軸向的外緣抵靠於鏡筒之内緣，令透鏡 片與鏡筒同轴設置，而可達到使鏡片精準對於影像擷取鏡 頭之功效。 為達前述之目的，本發明之鏡片係為射出成型，其具 有一本體，該本體具有一頂面與一底面，而該頂、底面之 間定義為一週緣，該週緣係呈錐狀之形態，且該週緣凸設 有三個以上之定位塊，各定位塊之外緣係與該本體之轴向 6 1252934 心最遠處係 平行延伸，且各定位塊之外緣距離該本體之袖 位在以該本體之軸心為目心的同___上。 本發明之上述及其他目的盥 每 U夂不難從下述所選用 貝％例之詳細說明與_巾，獲得深入了解。 當然，本發明在某些另件上，或另件之安排上容許有 所不同’但所選用之實施例’則於本朗書中，予以詳細 既明，並於附圖中展示其構造。 【實施方式】 請參閱第1圖與第2圖，圖中所示者為本發明所選用 之實施例結構，此僅供說明之用，在專利中請上並不受此 種結構之限制。 本實施例係可精準對位於影像擷取鏡頭之鏡片，該鏡 片係為射出成型，其具有一本體丄，該本體丄具有一頂面 1 1與-底面1 2，而該頂^面丄^^之間定義為 一週緣1 3，該週緣1 3係呈錐狀之形態以形成拔模斜度 Θ，且该本體1之週緣1 3凸設有三個以上之定位塊1 4 ，於本貫施例中係以設置四個橫斷面係呈圓弧形之定位塊 為例綠示說明’且各定位塊1 4之外緣χ 4 1係與該本體 1之軸向a平行，且各定位塊1 4之外緣1 4 1距離該本 體1之轴心最遠處係位在以該本體1之軸心為圓心的同一 圓周上’另該本體1之週緣1 3具有一截角1 5，且於兮 1252934 截角1 5處設有一注料部1 5 1，以於射出成型時供塑料 注入之用。 請參閱第3圖，由於本發明之各定位塊1 4係凸出於 本體1週緣1 3，因此模具2在加工時可以精準地由電腦 程式計算出直線之加工路徑而驅動刀具2 2精準地加工出 定位塊1 4所對應之模穴2 1，並且使射出成型後之各定 位塊1 4的外緣1 4 1平行於本體1之軸向，如此一來， 模穴2 1對應本體1週緣1 3的部份便不需要顧慮加工後 之真圓度問題，而可以降低製造成本。 由於各定位塊1 4外緣1 4 1係平行於本體1之軸向 a，且各定位塊14外緣14 1距離該本體1之轴心最遠 處之一點係位在以該本體1之轴心為圓心的同一圓周上， 因此在將鏡片本體1組裝於鏡筒3内時，便能以各定位塊 1 4之外緣1 4 1靠抵於鏡筒3之内緣3 1，如第4圖及 第5圖所示，而能確保該本體1係與鏡筒3同軸設置，使 本體1之軸心對準於影像感測元件4之感測區域中心，而 可達到使鏡片精準對於影像擷取鏡頭之功效。 當然，本創作仍存在許多例子，其間僅細節上之變化 。請參閱第6圖，其係本創作之第二實施例，其係於本體 1A之週缘1 3 A設置三個定位塊1 4 A，各定位塊1 4 A之外緣的横斷面係呈多邊形，如此亦可達到與前述第一 實施例相同之功效。 8 1252934 該鏡片之成型模具除了前述射出成型模具，可藉本發 明的鏡片結構特性進一步應用灌注模具、加壓成型模具所 製造形成，也因而鏡片材料的選擇可更廣泛地包括塑膠、 高分子聚合物或玻璃等材料所製成。 以上所述實施例之揭示係用以說明本發明，並非用以 限制本發明，故舉凡數值之變更或等效元件之置換仍應隸 屬本發明之範疇。 由以上詳細說明，可使熟知本項技藝者明暸本發明的 確可達成前述目的，實已符合專利法之規定，爰提出專利 申請。 【圖式簡單說明】 第1圖係本發明之鏡片的侧視圖 第2圖係本發明之鏡片的俯視圖 第3圖係用以射出本發明之鏡片的模具加工示意圖 第4圖係本發明之鏡片組裝時之示意圖之一 第5圖係本發明之鏡片組裝時之示意圖之二 第6圖係本發明第二實施例之結構示意圖 第7圖係習用之之鏡片的侧視圖 第8圖係習用鏡片的俯視圖 第9圖係習用鏡片組裝時之示意圖 第1 0圖係習用鏡片之模具的加工示意圖 9As shown in Fig. 7 and Fig. 8, the mirror plastic injection molding method for the conventional use is designed to be tapered, and the 彖8 1 system is designed to be tapered, and the pull-out slope is formed <9, and The periphery of the mirror only has a section 8 from a distance of 89 and a truncated angle 8 of the sheet 8 to provide a filling portion 3 for material injection during injection molding. ~ The mirror: 8 circumferences 81 series are designed to be tapered to form the draft angle, which is = set the leaf, otherwise there will be problems in the lens after the lens is injection molded, which is difficult to mold or forced to die and damage the lens. However, since the peripheral edge 81 is designed to be tapered*, when the lens 8 is assembled to the lens barrel 9, the peripheral edge 8^ of the lens barrel 9 has only a linear contact, which tends to cause the lens 8 to deflect, such as As shown in Fig. 9, in this way, the axis a of the lens 8 is skewed and cannot be aligned with the center line of the sensing area of the image sensing element 92. γ This causes problems such as image out of focus. The provision of the truncated angle 8 2 on the periphery 8 1 of the lens 8 is to prevent the injection part 8 3 (commonly known as the pedicle) from being sheared and protruding outside the circumference formed by the circumference 8 而 to affect the assembly work of the lens, in other words, Corner 8 2 is the necessary 5 1252934 concession design. However, the design of the truncated angle 8 2 causes the cavity 7 1 for the injection lens (as shown in Fig. 10) to become a non-circular shape, and the shape of the cavity 7 1 is simulated by a computer program, and the cutter is driven. 6 is machined in the mold 7 to complete the cavity 7 1, but the roundness of the circular machining path simulated by the computer program is not easy to ensure, and may cause the problem that the manufactured lens 8 cannot be accurately aligned during assembly. Therefore, the aforementioned lens structure is necessary to improve, in order to achieve the effect of accurate alignment. SUMMARY OF THE INVENTION The main object of the present invention is to solve the above problems and provide a lens that can be accurately positioned on an image capturing lens, which is mainly provided with three or more positioning blocks protruding from the periphery of the body, and each positioning block is The outer edge extends parallel to the axial direction of the lens body, and the outer edge of each positioning block is located farthest from the axis of the body at the same circumference centered on the axis of the body, and the positioning block can be parallel to the body axis The outer edge of the bearing abuts against the inner edge of the lens barrel, so that the lens piece and the lens barrel are coaxially arranged, so that the lens can accurately capture the lens for the image. For the purpose of the foregoing, the lens of the present invention is injection molded, and has a body having a top surface and a bottom surface, and the top and bottom surfaces are defined as a peripheral edge, and the periphery is tapered. And the peripheral edge is convexly provided with more than three positioning blocks, and the outer edge of each positioning block extends parallel to the farthest point of the axial direction of the body 6 1252934, and the outer edge of each positioning block is away from the sleeve of the body. Take the axis of the ontology as the same as ___. The above and other objects of the present invention are not difficult to obtain in-depth understanding from the detailed description of the selected examples. Of course, the present invention may be varied in some of the components, or the arrangement of the components, but the selected embodiments are described in detail in the present disclosure, and the construction thereof is shown in the drawings. [Embodiment] Please refer to Fig. 1 and Fig. 2, which shows the structure of the embodiment selected for the present invention, which is for illustrative purposes only, and is not limited by this structure in the patent. In this embodiment, the lens located in the image capturing lens is accurately formed, and the lens is injection molded, and has a body 丄 having a top surface 1 1 and a bottom surface 1 2 , and the top surface 丄 ^ ^ is defined as a peripheral edge 1 3, the peripheral edge 13 is in the shape of a cone to form a draft angle Θ, and the periphery of the body 1 is convexly provided with three or more positioning blocks 1 4 , in the present In the embodiment, a positioning block having four circular cross-sections in a circular arc shape is taken as an example of green description 'and the outer edge χ 4 1 of each positioning block 14 is parallel to the axial direction a of the body 1 and each The outer edge 1 4 1 of the positioning block 1 4 is located farthest from the axis of the body 1 on the same circumference centered on the axis of the body 1 and the periphery 13 of the body 1 has a truncated angle 1 5, and at the truncated angle 1252 of the 1252934, a filling portion 151 is provided for plastic injection during injection molding. Referring to FIG. 3, since each positioning block 14 of the present invention protrudes from the periphery 13 of the body 1, the mold 2 can accurately calculate a straight machining path by a computer program during machining to drive the cutter 2 2 accurately. The cavity 2 1 corresponding to the positioning block 14 is processed, and the outer edge 1 4 1 of each positioning block 14 after injection molding is parallel to the axial direction of the body 1, so that the cavity 2 1 corresponds to the body 1 The part of the periphery 13 does not need to worry about the roundness after processing, but can reduce the manufacturing cost. Since the outer edge 14 1 of each positioning block 14 is parallel to the axial direction a of the body 1 , and the outer edge 14 1 of each positioning block 14 is located at a point farthest from the axis of the body 1 , the body 1 is The axial center is on the same circumference of the center of the lens. Therefore, when the lens body 1 is assembled in the lens barrel 3, the outer edge 1 4 1 of each positioning block 14 can be pressed against the inner edge 3 of the lens barrel 3, such as As shown in FIG. 4 and FIG. 5, it can be ensured that the body 1 is coaxially disposed with the lens barrel 3, so that the axis of the body 1 is aligned with the center of the sensing area of the image sensing element 4, and the lens can be accurately aligned. For the effect of image capture lens. Of course, there are still many examples of this creation, only the details change. Please refer to FIG. 6 , which is a second embodiment of the present invention, which is provided with three positioning blocks 1 4 A on the periphery 13 3 A of the body 1A, and the cross-section of the outer edge of each positioning block 14 A It is a polygon, so that the same effect as the first embodiment described above can be achieved. 8 1252934 In addition to the aforementioned injection molding die, the molding die of the lens can be further formed by using the structural characteristics of the lens of the invention by using a filling mold and a pressure forming mold, and thus the selection of the lens material can more broadly include plastic, polymer polymerization. Made of materials or glass. The above description of the embodiments is intended to be illustrative of the invention, and is not intended to limit the scope of the invention. From the above detailed description, it will be apparent to those skilled in the art that the present invention can achieve the above-mentioned objects, and is in accordance with the provisions of the Patent Law. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a lens of the present invention. FIG. 2 is a plan view of a lens of the present invention. FIG. 3 is a schematic view of a mold for injecting a lens of the present invention. FIG. 4 is a lens of the present invention. Fig. 5 is a schematic view showing the assembly of the lens of the present invention. Fig. 6 is a schematic view showing the structure of the second embodiment of the present invention. Fig. 7 is a side view of a conventional lens. Fig. 8 is a conventional lens. Figure 9 of the top view is a schematic diagram of the assembly of the conventional lens. Figure 10 is a schematic view of the processing of the mold of the conventional lens.
1252934 【圖號說明】 (習用部分） 刀具6 模穴7 1 週緣8 1 注料部8 3 内緣9 1 (本發明部分） 本體1 底面1 2 定位塊1 4 截角1 5 模具2 刀具2 2 内緣3 1 模具7 鏡片8 截角8 2 鏡筒9 頂面1 1 週緣1 3 外緣1 4 1 注料部151 模穴2 1 鏡筒3 影像感測元件41252934 [Description of the figure] (conventional part) Tool 6 Mold hole 7 1 Circumference 8 1 Injection part 8 3 Inner edge 9 1 (part of the invention) Body 1 Bottom 1 2 Positioning block 1 4 Section 1 5 Mold 2 Tool 2 2 Inner edge 3 1 Mold 7 Lens 8 Truncation 8 2 Lens barrel 9 Top surface 1 1 Peripheral edge 1 3 Outer edge 1 4 1 Injection part 151 Cavity 2 1 Lens barrel 3 Image sensing element 4