1373645 九、發明說明： 【發明所屬之技術領域】 本發明係與光學鏡頭技術領域有關，更詳而言之 是指7種金屬光學鏡頭鏡筒之製法者_。 【先前技術】 習知光學鏡頭係由鏡座、鏡筒與鏡片等元件組合 而成’其中鏡筒與鏡座等機構定位元件多利用塑膠射 出之方式製成，俾有利於大量生產所需。不過，隨著 景夕像感應器日漸縮小化之應用趨勢，光學鏡頭之尺寸 亦必須隨之縮小，如此一來，利用塑膠射出之方式製 作鏡筒與鏡座等機構定位元件將無法滿足尺寸上之精 度要求，且，光學鏡頭之封裝製程中塑膠製品之耐熱 溫度亦有所限制。基此’研發更高精度及熱穩定性高 之機構定位元件甚有必要’且亦有利於較高精度要求 的光學鏡頭使用（如免對焦鏡頭），或適用自動化組裝。 因此，為克服塑膠射出之鏡筒與鏡座等機構定位 元件無法滿足尺寸上之精度要求、财熱溫度有限之缺 點’以金屬材料製作鏡筒與鏡座等機構定位元件便為 可行之方向，不過，為了達到電磁相容性 (electromagnetic compatibility » EMC)之要求， 而在塑膠製品表面鐘上金屬材質是相當耗費成本的， 其次’若以沖壓之方式製作金屬鏡筒與鏡座並無法達 1373645 到足夠的精度。 【發明内容】 本發明之主要目的即在提供一種可 之金屬光學鏡頭鏡筒之製法，，揭缺失 高，俾可有效提升光學鏡頭之組:=二甚 要求的光學鏡頭使用者。 、间月又1373645 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to the field of optical lens technology, and more specifically to the makers of seven metal optical lens barrels. [Prior Art] The conventional optical lens is composed of a combination of a lens holder, a lens barrel and a lens. The mechanism positioning elements such as the lens barrel and the lens holder are often produced by means of plastic injection, which is advantageous for mass production. However, with the trend of the application of the image sensor, the size of the optical lens must be reduced. As a result, the positioning of the lens barrel and the lens holder by the plastic injection method will not be able to meet the size. The precision requirements, and the heat-resistant temperature of the plastic products in the packaging process of the optical lens are also limited. It is necessary to develop a more precise and thermally stable mechanism positioning component, which is also necessary for the use of optical lenses with higher precision requirements (such as focus-free lenses) or for automated assembly. Therefore, in order to overcome the shortcomings of the dimensional accuracy of the lens and the lens holder, such as the lens barrel and the lens holder, the positioning of the lens barrel and the mirror base is feasible. However, in order to meet the requirements of electromagnetic compatibility (EMC), the metal material on the surface of the plastic product is quite costly. Secondly, if the metal lens barrel and the lens holder are made by stamping, it cannot reach 1373645. To enough precision. SUMMARY OF THE INVENTION The main object of the present invention is to provide a method for manufacturing a metal optical lens barrel, which can effectively improve the group of optical lenses: = two optical lens users. Month
本發明之另一目的在於 锊+制、▲ * 裡隻屬先學鏡頭鏡 涛之製法，其可達成電磁相容性之要求。 本發明之再一目的在於提供一種金屬光學鏡頭鏡 筒之製法，其可同時製造出複數個鏡筒，並可使用於 日曰圓級封裝（wafer ievei package)製程。 緣是’為達成前述之目的’本發明係提供一種金 屬光學鏡頭鏡筒之製法，至少包含有以下步驟：備取 數金屬板體：各該金屬板體係包含數第一板體與至少 一第二板體；開設透空：於各該第一板體上分別開設 數透空’並以蝕刻方式於該第二板體上開設數透空； 貼合金屬板體：將各該第一板體貼置於第二板體二 侧，而使各該透空對應構成光學鏡頭鏡筒之内部空間 與通光口徑；切割：切割各該金屬板體’而獲致複數 個光學鏡頭鏡筒。 【實施方式】 J373645 以下’茲舉本發明一較佳實施例，並配合圖式做 進一步之詳細說明如後： 請參閱圖一至圖三所示，本創作一較佳實施例金 屬光學鏡頭鏡筒之製法，筹第一步驟係備取數金屬板 體110:各該金屬板體係不鏽鋼（stainless steel)， 銅或銅合金材料亦可，包含三第一板體22、23、24與 一第二板體26。各該第一板體22、23、24係構成供 光線進出之鏡筒部分，該第二板體26係構成用以容置 光學鏡片之鏡筒部分 第二步驟係開設透空120 :以蝕刻方式於各該第 一、第二板體22、23、24、26上分別開設内徑木同之 數透工28 ’該钱刻方式係化學濕钱刻法（chem.ical etching) ’並先以光罩製程界定蝕刻區域再進行蝕 刻，其步驟如下： 先於各該第一、第二板體22、23、24、26上塗佈 光阻（photoresister )，如圖二A所示，再利用光罩 進行曝光與後續顯影、去除未顯影光阻劑，如圖二B 所示’再以化學濕餘刻之方式形成複數個透空28，並 清除殘留的光阻，如圖二C、圖二D所示。 第三步驟係貼合金屬板體130:將各該第一板體 22、23、24貼置於第二板體26二侧，而使各該透空 28對應構成光學鏡頭鏡筒之内部空間與通光口徑，如 圖三所示。 1373645 第四步驟係切割14〇:切割貼合完成之各該金屬 板體，而獲致複數個光學鏡頭鏡筒3〇,可分離成為單 一光學鏡頭鏡筒，也可佈設成適於晶圓級封裝（wafer level package)製程之排列型式，如圖四所示。 一· 藉此’本發明製作之光學鏡頭鏡筒30係運用於光 學鏡頭之組裝製程，用以可提升光學鏡頭之組裝效 率，其可供切割而一次產生多數獨立之光學鏡頭鏡筒 30，再分別將各該鏡筒部3〇與鏡座、鏡片等元件（圖 中未示）組成光學鏡頭，亦可於尚未切割、分離各該光 學鏡頭鏡筒30前，先於各該光學鏡頭鏡筒3〇上組成 光學鏡頭，再使各該光學鏡頭分離、獨立，俾獲致提 升光學鏡頭組裝效率之效果。 由上可知，本發明所提供金屬光學鏡頭鏡筒之製 法，其利用不鏽鋼、銅、銅合金等金屬材料製成，精 度及熱穩定性均甚高，該等金屬並符合電磁相容性 (electromagnetic compatibility，EMC)之要求， 且易於表面染黑’可一次產生多數光學鏡頭鏡筒，俾 可有效七升光學鏡頭之組裝效率、供較高精度要求的 光學鏡頭使用》 此外，該第一板體22係光學鏡頭之通光口徑，上 下開口有不同的内徑’該第二板體係26光學鏡片組入 之位置’光學鏡片外徑與第二板體26之透空28内徑 必須相配合，以本實施例而言，第二板體26之透空 1373645 28内徑公差為i〇微米，該第一板體23係界定出光學 鏡片與感測元件（圖中未示）的空間距離，因此，其 厚度公差較重要’例如為1〇微米，而其透空28之内 徑公差可麵鬆’例如為50微米，因此可採用沖壓或雷 射切割之方式製作，該第一板體24係感測元件的容置 空間，與該第一板體23的精度要求相當，是以亦可採 甩沖壓或雷射切割方式製作其上之透空28。 【圖式簡單說明i 圖一係本發明一較佳實施例之流程圖。 圖二A至圖二D係本發明一較佳實施例中開設透 空步驟之蝕刻流程示意圖。 圖三係本發明一較佳實施例中金屬板體貼合之狀 態圖。 圖四係本發明一較佳實施例所製成之複數個光學 鏡頭鏡筒外觀圖。 【主要元件符號說明】 開設透空120 備取數金屬板體110 貼合金屬板體130切割140第一板體22、23、24 第二板體26透空28 光學鏡頭鏡筒30Another object of the present invention is that the 锊+ system and the ▲* are only the first method of learning the lens mirror, which can meet the requirements of electromagnetic compatibility. Still another object of the present invention is to provide a method of manufacturing a metal optical lens barrel which can simultaneously manufacture a plurality of lens barrels and can be used in a wafer ievei package process. The present invention provides a method for manufacturing a metal optical lens barrel, comprising at least the following steps: preparing a plurality of metal plates: each of the metal plate systems comprises a plurality of first plates and at least one a second plate; opening a venting: opening a plurality of permeable spaces on each of the first plates and opening a plurality of vents on the second plate by etching; bonding the metal plates: each of the first plates The body is placed on two sides of the second plate body, so that each of the air spaces corresponds to an inner space and a light passing diameter of the optical lens barrel; and the cutting: cutting each of the metal plate bodies to obtain a plurality of optical lens barrels. [Embodiment] J373645 The following is a preferred embodiment of the present invention, and further detailed description with reference to the following: Referring to Figures 1 to 3, a preferred embodiment of the metal optical lens barrel The first step is to prepare a plurality of metal plate bodies 110: each of the metal plate system stainless steel (stainless steel), copper or copper alloy material may also include three first plates 22, 23, 24 and a second Plate body 26. Each of the first plates 22, 23, 24 constitutes a barrel portion for the light to enter and exit, and the second plate 26 constitutes a barrel portion for accommodating the optical lens. The second step is to open the void 120: to etch In each of the first and second plates 22, 23, 24, and 26, respectively, the inner diameter of the wood is the same as the number 28, and the method of chemical etching is chem.ical etching. Etching is performed by defining a etched region by a mask process, and the steps are as follows: a photoresist is applied on each of the first and second plates 22, 23, 24, 26, as shown in FIG. Exposing and subsequent development using a photomask, removing the undeveloped photoresist, as shown in FIG. 2B, forming a plurality of transparent spaces 28 by chemical wet remnant, and removing residual photoresist, as shown in FIG. 2C. Figure 2D shows. The third step is to affix the metal plate body 130: the first plate bodies 22, 23, and 24 are placed on the two sides of the second plate body 26, so that the respective air permeable spaces 28 correspond to the internal space of the optical lens barrel. With the aperture of the light, as shown in Figure 3. 1373645 The fourth step is to cut 14 turns: the metal plate body is cut and bonded, and a plurality of optical lens barrels are obtained, which can be separated into a single optical lens barrel or can be arranged for wafer level packaging. (wafer level package) The arrangement of the process, as shown in Figure 4. 1. The optical lens barrel 30 manufactured by the present invention is applied to an assembly process of an optical lens for improving the assembly efficiency of the optical lens, which can be cut to produce a plurality of independent optical lens barrels 30 at a time, and then Each of the lens barrel portion 3 and the lens holder, the lens and the like (not shown) constitute an optical lens, or before the optical lens barrel 30 has been cut and separated, before the optical lens barrel The optical lens is formed on the 3 〇, and then the optical lens is separated and independent, and the effect of improving the assembly efficiency of the optical lens is obtained. It can be seen from the above that the method for manufacturing the metal optical lens barrel provided by the invention is made of metal materials such as stainless steel, copper, copper alloy, etc., and the precision and thermal stability are very high, and the metals conform to electromagnetic compatibility (electromagnetic Compatibility, EMC), and easy to blacken the surface 'can produce most optical lens barrels at a time, can effectively use the assembly efficiency of seven-liter optical lens, optical lens for higher precision requirements." In addition, the first board The optical aperture of the 22-series optical lens has different inner diameters for the upper and lower openings. The position of the second lens system 26 is set by the optical lens. The outer diameter of the optical lens and the inner diameter of the second plate 26 must match. In the present embodiment, the inner diameter tolerance of the second plate body 26 is 1 645 〇 〇, and the first plate body 23 defines a spatial distance between the optical lens and the sensing element (not shown). Therefore, the thickness tolerance is more important 'for example, 1 〇 micrometer, and the inner diameter tolerance of the air permeable 28 can be loose, for example, 50 micrometers, and thus can be fabricated by stamping or laser cutting, the first plate body 24 The accommodating space of the sensing component is equivalent to the precision requirement of the first plate body 23, and the permeable space 28 is also formed by stamping or laser cutting. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a flow chart of a preferred embodiment of the present invention. 2A to 2D are schematic diagrams showing an etching process for opening a transparent step in a preferred embodiment of the present invention. Fig. 3 is a view showing a state in which a metal plate body is bonded in a preferred embodiment of the present invention. Figure 4 is an external view of a plurality of optical lens barrels produced in accordance with a preferred embodiment of the present invention. [Description of main component symbols] Opening a venting 120 Preparing a number of metal plates 110 Bonding a metal plate 130 cutting 140 First plates 22, 23, 24 Second plate 26 permeable 28 Optical lens barrel 30