M320682 八、新型說明： 【新型所屬之技術領域】 本創作係與光學鏡頭有關，更詳而言之是指一種不需 對焦之微型光學鏡頭者。 【先前技術】 . 一般光學元件（鏡片）均有其一定之焦點、景深 (depth of field)及焦深（depth of focus)，在保持影像 • 原有景深不變的前提下，焦點沿著光學元件光軸所允許移 動之距離即為焦深，焦深範圍内均可以獲得清楚之影像。 如圖一所示，習知影像擷取單元1大體上係由一光 學鏡頭2與一影像感測元件（image sensor)3所構成，光 學鏡頭2係固定於影像感測元伴3上，包含有若干鏡片 4、一鏡筒（barrel)5與一鏡座（holder)6。組裝時，係先 將鏡片4黏固於鏡筒5内，再將鏡筒5固置於鏡座6上， 鲁1後將鏡座6利用黏膠黏固於影像感測元件3上，使影像 -感測元件3位於焦深範圍内。由於影像擷取單元1之各組 成構件皆有其個別之尺寸公差，故組裝後所累積之組合公 差甚為可觀，常導致組裝後之焦距改變而無法聚焦成像， 造成產品良率不高，必須再進行調焦距之步驟，使得整體 製程甚為繁瑣。 為此，乃有業者設計出組裝時不需調整焦距之光學 鏡頭，如中華民國新型第92201806號「免調焦距之定焦 M320682 鏡頭機構」專利案所示，其結構主要係由一定焦鏡罩、一 透鏡、一影像感知基座及一影像感知器所組成，利用定焦 鏡罩所没置之南度恰為黏著於定焦鏡罩内之透鏡與影像 感知器間之最佳焦距，使得影像通過該透鏡之縮放而直接 傳達至該影像感知器，藉此免除調整焦距之手續。 、 前揭專利案之結構雖宣稱可免除調整焦距之手續， 准事實上’疋焦鏡罩、透鏡製作上均會有其個別之尺寸 公差，當二者組裝後所累積之公差通常會使焦距改變，並 鲁無法真正達成不需調整焦距之效果。 【新型内容】 本創作之主要目的即在提供一種可解決前揭缺失之 不需對焦之微型光學鏡頭，其構件猜簡、可減少累積公 差，且組合公差係小於光學聚焦之焦深範圍、不需進行調 焦距之動作，俾可降低製作成本，甚具經濟效益。 緣是，為達成前述之目的，本創作係提供一種不需對 ，焦之微型光學鏡頭，包含有一鏡座；若干光學元件，設置 於該鏡座上，其與鏡座之組合公差係小於光學聚焦之焦深 範圍。 【實施方式】 以下’茲舉本創作一較佳實施例，並配合圖式做進一 步之詳細說明如後： M320682 請參閱圖二及圖三所示，本創作一較佳實施例不需對 焦之微型光學鏡頭10，其焦深範圍係設計為17微米，由 前焦深12微米與後焦深5微米構成，包含有一鏡座12， 係由金屬或塑膠材質製成，其高度公差為5微米，具有二 端開口之一筒體22及一體成型於筒體22 —開口端之一連 、接座24,該連接座24外侧更凹設有數點膠孔26、内部則 ， 設有連通各點膠孔26之溢料區28，一光學元件14，中心 厚度製作公差為5微米，以玻璃或塑膠鏡片製成，設置於 _該筒體22對應連接座24之開口端内。 藉此，該微型光學鏡頭10係利用填入點膠孔26之黏 膠30黏固於一影像感測元件32上，該連接座24内之溢 料區28更可容納多餘之黏膠30，俾確保該微型光學鏡頭 10與影像感測元件32可緊密地貼合。如此一來，由於該 鏡座12與光學元件14之組合公差小於焦深範圍（17微 米）、焦點仍位於可清楚顯示影像或聚焦之範圍内，因此， ❿該微型光學鏡頭10組裝於影像感測元件32上時便不需進 -行調焦之動作。 由上可知，本創作所提供不需對焦之微型光學鏡頭， 其光學元件係直接固定於筒狀之鏡座内，俾可省略習知承 裝鏡片之鏡筒而降低元件數量、減少尺寸公差之累積；其 次’藉由鏡座與光學鏡頭之組合公差小於焦深範圍之設 計，可獲致組裝後不需調焦之效果，俾可降低製作成本， 甚具經濟效益。 M320682 【圖式簡單說明】 第一圖係一習知影像擷取單元之組合示意圖。 第二圖係本創作一較佳實施例之立體組合圖。 第三圖係本創作一較佳實施例之剖面示意圖。 【主要元件符號說明】 微型光學鏡頭10 鏡座12 光學元件14 筒體22 連接座24 點膠孔26 溢料區28 黏膠30 影像感測元件32 8M320682 VIII. New Description: [New Technology Field] This creation is related to optical lenses. More specifically, it refers to a miniature optical lens that does not require focusing. [Prior Art] A general optical component (lens) has a certain focus, depth of field, and depth of focus. The focus is along the optical while keeping the image and the original depth of field unchanged. The distance that the optical axis of the component is allowed to move is the depth of focus, and a clear image can be obtained in the depth of focus. As shown in FIG. 1 , the conventional image capturing unit 1 is generally composed of an optical lens 2 and an image sensor 3, and the optical lens 2 is fixed on the image sensing element 3, including There are a number of lenses 4, a barrel 5 and a holder 6. When assembling, the lens 4 is first adhered to the lens barrel 5, and then the lens barrel 5 is fixed on the lens holder 6. After the Lu 1 is used, the lens holder 6 is adhered to the image sensing element 3 by adhesive, so that The image-sensing element 3 is located in the depth of focus range. Since each component of the image capturing unit 1 has its own dimensional tolerance, the combined tolerance accumulated after assembly is very considerable, which often results in a change in the focal length after assembly and cannot focus on imaging, resulting in a low product yield. The step of adjusting the focus distance makes the overall process very cumbersome. To this end, some manufacturers have designed optical lenses that do not need to adjust the focal length during assembly. For example, the Republic of China new type 92201806 "Focus-free focal length fixed focus M320682 lens mechanism" patent case, its structure is mainly composed of a certain focal lens cover a lens, an image sensing pedestal and an image sensor, wherein the south of the fixed focus hood is just the best focal length between the lens and the image sensor in the fixed focus hood. The image is directly transmitted to the image sensor by the zoom of the lens, thereby eliminating the need to adjust the focal length. Although the structure of the previously disclosed patent case claims that the procedure for adjusting the focal length can be dispensed with, in fact, the 'focus lens cover and the lens are produced with their individual dimensional tolerances. When the two components are assembled, the tolerance usually makes the focal length. Change, and Lu can not really achieve the effect of not needing to adjust the focal length. [New content] The main purpose of this creation is to provide a miniature optical lens that can solve the problem of lack of focus. The components can be simplified, the cumulative tolerance can be reduced, and the combined tolerance is less than the focal depth of the optical focus. It is necessary to carry out the action of adjusting the focus, which can reduce the production cost and is very economical. The reason is that, in order to achieve the above purpose, the present invention provides a micro optical lens that does not need to be in focus, and includes a lens holder; a plurality of optical components are disposed on the lens holder, and the combined tolerance of the lens holder and the lens holder is smaller than the optical The depth of focus of the focus. [Embodiment] The following is a preferred embodiment of the present invention, and further detailed description with the following figures: M320682 Referring to FIG. 2 and FIG. 3, a preferred embodiment of the present invention does not require focusing. The micro-optical lens 10 has a focal depth range of 17 microns and consists of a front depth of 12 microns and a back depth of 5 microns. It consists of a lens holder 12 made of metal or plastic with a height tolerance of 5 microns. a tubular body 22 having a two-end opening and integrally formed on the tubular body 22 - one of the open ends, and a socket 24, the outer side of the connecting seat 24 is further recessed with a plurality of plastic holes 26, and the interior is provided with a connection of each dispensing The flash region 28 of the aperture 26, an optical component 14, has a center thickness tolerance of 5 microns, is made of a glass or plastic lens, and is disposed within the open end of the cartridge 22 corresponding to the connector 24. Therefore, the micro-optical lens 10 is adhered to an image sensing component 32 by the adhesive 30 filled in the dispensing hole 26, and the flashing area 28 in the connector 24 can accommodate the excess adhesive 30. It is ensured that the micro-optical lens 10 and the image sensing element 32 can be closely fitted. In this way, since the combination tolerance of the lens holder 12 and the optical element 14 is smaller than the focal depth range (17 micrometers), and the focus is still within the range in which the image or the focus can be clearly displayed, the micro-optical lens 10 is assembled in the image sense. When the component 32 is measured, there is no need to perform a line-focusing action. As can be seen from the above, the micro-optical lens provided by the present invention does not require focusing, and the optical component is directly fixed in the cylindrical lens holder, so that the lens barrel of the conventional lens can be omitted to reduce the number of components and reduce the dimensional tolerance. Accumulation; secondly, by the combination of the lens holder and the optical lens with a tolerance less than the depth of focus range, the effect of not adjusting the focus after assembly can be obtained, and the production cost can be reduced, which is very economical. M320682 [Simple description of the diagram] The first diagram is a combination diagram of a conventional image capturing unit. The second drawing is a three-dimensional combination of a preferred embodiment of the present invention. The third drawing is a schematic cross-sectional view of a preferred embodiment of the present invention. [Main component symbol description] Micro optical lens 10 Mirror base 12 Optical component 14 Cylinder 22 Connector 24 Dispensing hole 26 Flash area 28 Adhesive 30 Image sensing element 32 8