201116879 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種光學系統，尤其涉及一種鏡頭模組。 [先前技術] [0002] 隨著攝像技術之發展，鏡頭模組在各種用途之攝像裝置 中得到廣泛之應用，其中定焦鏡頭模組更是攝像專業人 士之摯愛。傳統定焦鏡頭模組—般包括鏡筒、鏡座及收 容於鏡筒中之透鏡組、間隔環和濾光片等元件。 [0003] [0004]201116879 VI. Description of the Invention: [Technical Field] [0001] The present invention relates to an optical system, and more particularly to a lens module. [Prior Art] [0002] With the development of camera technology, the lens module has been widely used in various types of camera devices, and the fixed-focus lens module is the favorite of camera professionals. Conventional fixed-focus lens modules generally include a lens barrel, a lens holder, and a lens group, a spacer ring, and a filter housed in the lens barrel. [0003] [0004]
傳統之定焦鏡頭模組中，鏡座與鏡筒之間通過螺紋進行 緊密配合與鎖附，即通過螺紋配合，鏡筒與鏡座之間形 成鎖附力。調焦時般通過調整調焦環來調節鏡頭模 組中之透鏡組與影像Μϋ之間之_，以使鏡頭模組 獲得較好之成像效果。組裝鏡頭模組時，將鏡筒先組裝 之部位與鏡座相應之部位對準，然後進行相對旋轉，直In the conventional fixed-focus lens module, the mirror base and the lens barrel are closely matched and locked by threads, that is, by screwing, a locking force is formed between the lens barrel and the lens holder. Adjust the focus ring to adjust the angle between the lens group and the image frame in the lens module when focusing, so that the lens module can obtain better imaging results. When assembling the lens module, align the first assembly part of the lens barrel with the corresponding part of the lens holder, and then rotate relative to each other.
土现同㈣絲配到位。鏡料鏡座及它們之裝配方 ，使得傳統魏模組中存在如下問題，在螺紋配合與 附中，—般存在不明牙之間鎖㈣均Μ 象，這使得鏡筒與鏡座之間之扭力/_不易控制， 易調整鏡筒與鏡座之間較精確之位置。因此，在調隹 就難以通㈣單地調節錢迷 成調焦不容易。 料之减位置’ 为汗，在調焦過程中，鏡座與 、琦之螺牙可能因為相互 運動而磨損，且形成一些雜屑， 如果這些雜屑落入到位 於叙湾下方之影像感測器上， 你&里 时直接影響鏡頭模組之成 像效果。 098138178 表單編號Α0101 第4頁/共16頁 0982065492-0 201116879 【發明内容】 [0005] 有鑑於此，有必要提供-種調焦容易且可防止雜屑之鏡 頭模組。 Α [0006] -種鏡頭模組’其包括-鏡筒、—鏡座及—彈性元件； 所述鏡筒包括依次相連接之—軸接部及一延伸部，所述 延伸部之外徑小於轴接部H則延伸部與轴接部二 間形成-第-階梯面’所述軸接部上設置有外螺紋；所 述鏡座㈣有***述鏡筒之通孔，所述通孔内設置有 〇 内螺紋及-鄰近像端設置之止擒環，所述止㈣具有一 朝向於物側之第二階梯面，止擋環之内#小於外螺紋之 外徑且大於延伸部之外徑；所述鏡筒上之外與所述 鏡座上之内螺紋形成松配合使得兩者之間在轴向不相鎖 附’所述延伸職讀環中伸出；所述雜元件抵持設 置於第一階梯面與第二階梯面之間。 [0007] 〇 與先前技術相比’本發明之鏡頭模組中之_與鏡座通 過权配合且相互之間不鎖附之螺紋實現配合，並採用彈 14元件使鏡筒與鏡座之間實現鎖附，使得鏡筒與鏡座之 間鎖附力均勻，可避錢焦過程因鎖附力不同或不均句 而造成調焦不易。另外，通過在相嚙合之外嫘紋與内螺 紋之下方設置止擋環，可將在調焦過程中外嫘紋與内螺 紋之間因磨損而產生之雜屑遮擋，防止雜屑對鏡頭模組 之成像效果產生影響。 【實施方式】 [0008] τ _ 將結合附圖與實施例對本技術方案作進一步詳細說 明。 098138178 表單蝙敢Α0101 第5頁/共16頁 0982065492-0 201116879 闺㈣1至圖4所示，為本發明實施方式提供之一種鏡頭模 組ίο，其包括-鏡筒u、一鏡座12及一彈性元件13。、The soil is in the same place as the (four) wire. The mirror frame holders and their assembly make the following problems in the conventional Wei module. In the threaded and attached, there is a lock between the teeth (4), which causes the torque between the lens barrel and the lens holder. /_ is not easy to control, easy to adjust the position between the lens barrel and the mirror holder. Therefore, it is difficult to adjust the money in a single adjustment. The position of the material is reduced to sweat. During the focusing process, the mirror base and the screw of Qi may wear out due to mutual movement and form some debris. If these debris fall into the image sensing under the bay On the device, you & directly affect the imaging effect of the lens module. 098138178 Form No. Α0101 Page 4 of 16 0982065492-0 201116879 SUMMARY OF THE INVENTION [0005] In view of the above, it is necessary to provide a lens module which is easy to adjust and which can prevent spoilage. [0006] A lens module that includes a lens barrel, a lens holder, and an elastic member; the lens barrel includes a shaft portion and an extension portion that are sequentially connected, and an outer diameter of the extension portion is smaller than The shaft joint portion H is formed between the extension portion and the shaft joint portion - the first step surface is provided with an external thread on the shaft joint portion; the mirror base (4) has a through hole for receiving the lens barrel, the through hole An internal thread and a stop ring disposed adjacent to the image end are disposed, and the stop (4) has a second step surface facing the object side, and the inside of the stop ring is smaller than the outer diameter of the external thread and larger than the extension portion. An outer diameter; a loose fit on the lens barrel and an internal thread on the lens holder such that the two axially do not interlock with each other in the extended reading ring; The device is disposed between the first step surface and the second step surface. [0007] Compared with the prior art, the lens assembly of the present invention cooperates with the mirror seat by means of a right-locking and non-locking thread, and uses a spring 14 element to make the lens barrel and the lens holder The locking is realized, so that the locking force between the lens barrel and the lens holder is uniform, and the process of avoiding the money is difficult to adjust due to the different locking force or the uneven sentence. In addition, by providing a stop ring under the crepe and the internal thread outside the meshing, the debris generated by the wear between the outer crepe and the internal thread during the focusing process can be blocked, and the debris is prevented from being applied to the lens module. The imaging effect has an effect. [Embodiment] [0008] τ _ The present technical solution will be further described in detail with reference to the accompanying drawings and embodiments. 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 Elastic element 13. ,
闺所述鏡筒11兩卿口且相貫通，所錢如之内部收容 有透鏡組、間隔環和遽光片等元件（圖未示）。所述鏡 筒11自物侧至像側依次包括相互連接之一作動部111、— 轴接部112及一延伸部113。本實施例中，所述作動部 111為圓盤狀，所述轴接部112為圓柱軸狀，且所述作動 部ill之外徑大於軸接部112之外徑。所述作動部lu邊 緣間隔均勻之開設有多個半圓形既槽111&，所述凹槽 11 la用於方便旋轉作動部u。所述軸接部112上形成有 外螺紋112a，所述外螺紋112a之外徑大於軸接部112外 控。所述延伸部113之外徑小於軸接部之外徑，且所 述延伸部113與轴接部112形成一第一階梯面114。The lens barrel 11 is connected to the two mouths, and the inside of the lens barrel is housed with elements such as a lens group, a spacer ring, and a calendering sheet (not shown). The lens barrel 11 includes, in order from the object side to the image side, an actuating portion 111, a shaft connecting portion 112 and an extending portion 113. In this embodiment, the actuating portion 111 has a disk shape, the shaft connecting portion 112 has a cylindrical axis shape, and an outer diameter of the actuating portion ill is larger than an outer diameter of the shaft connecting portion 112. The actuating portion lu is evenly spaced apart to provide a plurality of semicircular grooves 111&, and the grooves 11 la are for facilitating the rotation of the actuating portion u. The shaft portion 112 is formed with an external thread 112a, and the outer diameter of the outer thread 112a is larger than the outer portion of the shaft portion 112. The outer diameter of the extending portion 113 is smaller than the outer diameter of the shaft connecting portion, and the extending portion 113 and the shaft connecting portion 112 form a first step surface 114.
[0011]所述鏡座12開設有***述鏡筒n之通孔121，所述鏡座 12之一端為朝向於物侧之+端面122，另一端為朝向於像 侧之下端面123。所述通孔121與所述鏡筒11之軸接部 112形成轴配合。所述通孔i21内靠近上端面122之位置 處設置有與轴接部112上之外螺紋112a相搞合之内螺紋 121 a，且所述内螺紋121 a之外徑與通孔121之内徑相同 。所述通孔121内還固設有一環狀之止擋環124，所述止 擋環124位於内螺紋之下方且靠近所述下端面123。所述 止擋環124具有一朝向於物侧之第二階梯面125。所述止 擋環124之内徑還小於鏡座12之内螺紋121 a之外徑，且 大於延伸部11 3之外徑。 [0012] 所述鏡筒11之外螺紋11 2a之齒厚小於所述鏡座12之内螺 098138178 表單編號A0101 第6頁/共16頁 0982065492-0 201116879 紋121a之螺距，從而使得鏡筒丨丨在與鏡座12配合以後， 兩者在軸向仍然有一定之活動空間，導致鏡筒u與鏡座 12之間不通過所述外螺紋1123與所述内螺紋12ia進行軸 向鎖附。由此，鏡筒Π與鏡座12之間不存在螺紋緊密配 合中不同螺牙間鎖附力不同或不均勻之現象，避免了螺 紋配合中發生咬牙之情況。 [0013] 優選地，所述外螺紋112a與所述内螺紋i2la之螺紋圈數 為2〜3圈，由此，既可容易地實現外螺紋丨丨〜與内螺紋 0 121a之間隙配合，又便於鏡筒11與鏡痤12之加工。 [0014] 所述彈性元件13為環狀彈簧，其具有環取部131及設在環 狀部131上之彈片132。彈片13—端與環狀部_131連接， 另外一端向遠離彈片132之一個端面“起v從而形成彈性 自由端。本實施例中’所述彈片132設有4片，當然’也 可以均等地設3片、5片或6片。此外，彈性元件13也不局 限於本實施例中之環狀彈性元件13，也可以為彈性元件 板等其他彈性元件。 [0015] 在組裝過程中，將所述彈性元件13放置於鏡座12之第二 階梯面125上’且使所述彈性元件13翹起之彈片132朝向 於像側’然後將鏡筒11旋入到鏡座12之通孔121内，直至 所述第一階梯面114與彈性元件13相接觸，並使彈片元件 發生彈性形變13。所述鏡筒11之延伸部113從所述止插環 124伸出，且延伸部113與止擋環124之間為間隙配合或 過渡配合。由此，彈性元件13受壓縮時，將對所述第一 階梯面114與所述第二階梯面125形成作用力，使松配合 之外螺紋112a與内螺紋121a相互抵靠形成鎖附力，即彈 098138178 表單編號A0101 第7頁/共16頁 0982065492-0 201116879 件13之作用力可使所述鏡筒η與所述鏡座12相互鎖 附°同時’在鏡頭模組_焦時，彈性元件13之作用力 可保持鏡筒11錢座12鎖_之穩定度，料鏡筒⑴目 對鏡座12晃動而造成綠傾斜之現象。 [0016] [0017] [0018] 098138178 另外，當調焦過程中’鏡座11之外螺紋112a與鏡筒12之 内螺紋内螺紋121a因為相互運動而磨損形成之一些雜屑 U雜屑將落在止擋片124上，而不會落人到位於鏡筒 下方之衫像感測器（圖未示）上。本實施方式中， 所述止擋片124之第二階梯面125上放置有膠體（圖未示 )’所述膠體一方面可對彈性元件13進择龜接固定，另 一方面可吸附雜屑。 本發明之鏡頭模組中之鏡筒與鏡座通過松配合且相互之 間不鎖附之螺紋實現配合，並採用彈性元件使鏡筒與鏡 座之間實現鎖附，使得鏡筒與鏡座之間鎖附力均勻，可 避免調焦過程因鎖附力不同或不均勻而造歲調焦不易。 另外，通過在相嚙合之外螺紋與内螺紋之下方設置止擋 環，可將在調焦過程中外螺紋與内嫘紋之間因磨損而產 生之雜屑遮擋，防止雜屑對鏡頭模組之成像效果產生影 響。 综上所述，本發明確已符合發明專利之要件，遂依法提 出專利申請。惟’以上所述者僅為本發明之較佳實施方 式’自不能以此限制本案之申請專利範圍。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】 表單編號A0101 第8頁/共16頁 0982065492-0 201116879 [0019] 圖1係本發明實施方式提供之鏡頭模組之分解示意圖 [0020] 圖2係圖1中鏡頭模組之另一角度分解示意圖。 [0021] 圖3係圖1中鏡頭模組之組裝立體示意圖。 [0022] 圖4係圖3所示之鏡頭模組沿IV- IV方向之剖視圖。 [0023] 【主要元件符號說明】 鏡頭模組：10 [0024] 鏡筒：11 Ο [0025] 作動部：111 [0026] 軸接部：112 [0027] 延伸部：113 [0028] 第一階梯面：114 [0029] 凹槽：111a [0030] 外螺紋：112a 〇 [0031] 鏡座：12 [0032] 通孔：121 [0033] 上端面：122 [0034] 下端面：123 [0035] 止擋環：124 [0036] 第二階梯面：125 [0037] 内螺紋：121a 098138178 表單編號A0101 第9頁/共16頁 0982065492-0 201116879 [0038] 彈性元件：13 [0039] 環狀部：131 [0040] 彈片·· 132The lens holder 12 defines a through hole 121 for receiving the lens barrel n. One end of the lens holder 12 is an end surface 122 facing the object side, and the other end is facing the image side lower end surface 123. The through hole 121 forms a shaft fit with the shaft portion 112 of the lens barrel 11. An internal thread 121 a that engages with the external thread 112 a of the shaft portion 112 is disposed at a position near the upper end surface 122 of the through hole i21 , and the outer diameter of the internal thread 121 a and the through hole 121 are The path is the same. An annular stop ring 124 is also disposed in the through hole 121, and the stop ring 124 is located below the internal thread and adjacent to the lower end surface 123. The stop ring 124 has a second step surface 125 that faces the object side. The inner diameter of the stop ring 124 is also smaller than the outer diameter of the inner thread 121a of the lens holder 12 and larger than the outer diameter of the extension portion 113. [0012] The tooth thickness of the external thread 11 2a of the lens barrel 11 is smaller than the inner thread of the lens holder 12 098138178 Form No. A0101 Page 6 / Total 16 pages 0982065492-0 201116879 The pitch of the 121a, so that the lens barrel 丨After being engaged with the lens holder 12, the two still have a certain movable space in the axial direction, so that the lens barrel u and the lens holder 12 are not axially locked by the external thread 1123 and the internal thread 12ia. Therefore, there is no difference or unevenness in the locking force between the different threads in the tight fitting of the lens barrel Π and the lens holder 12, thereby avoiding the occurrence of biting in the thread matching. [0013] Preferably, the number of turns of the external thread 112a and the internal thread i2la is 2 to 3 turns, thereby easily achieving the clearance between the external thread 丨丨~ and the internal thread 0 121a, The processing of the lens barrel 11 and the mirror 12 is facilitated. [0014] The elastic member 13 is an annular spring having a ring-shaped portion 131 and a resilient piece 132 provided on the annular portion 131. The elastic piece 13 is connected to the annular portion _131, and the other end is "opened from the end surface of the elastic piece 132 to form an elastic free end. In the embodiment, the elastic piece 132 is provided with four pieces, of course, Further, the elastic member 13 is not limited to the annular elastic member 13 in the present embodiment, and may be another elastic member such as an elastic member plate. [0015] In the assembly process, The elastic member 13 is placed on the second step surface 125 of the lens holder 12 and the elastic piece 13 is tilted toward the image side and then the lens barrel 11 is screwed into the through hole 121 of the lens holder 12. Thereafter, the first step surface 114 is in contact with the elastic member 13, and the elastic member is elastically deformed 13. The extension portion 113 of the lens barrel 11 protrudes from the insertion ring 124, and the extension portion 113 and The gap between the stop rings 124 is a clearance fit or a transition fit. Therefore, when the elastic member 13 is compressed, a force is formed on the first step surface 114 and the second step surface 125 to make the loose fit thread 112a and the internal thread 121a abut against each other to form a locking force, that is, the spring 0981381 78 Form No. A0101 Page 7 / Total 16 Page 0982065492-0 201116879 The force of the piece 13 can lock the barrel η and the mirror base 12 to each other while at the same time 'in the lens module _ focus, the elastic element 13 The force can maintain the stability of the lens barrel 11 lock 12, and the lens barrel (1) causes the phenomenon that the mirror base 12 is shaken to cause green tilt. [0016] [0018] 098138178 In addition, when the focusing process The internal thread 112a of the lens holder 11 and the internal thread 121a of the lens barrel 12 are worn by the mutual movement, and some of the debris U debris will fall on the stopper piece 124 without falling into the lens barrel. In the embodiment, the second step surface 125 of the stop piece 124 is placed with a colloid (not shown). The colloid can be used for the elastic element. 13 is selected to be fixed by the turtle, and on the other hand, the dust can be adsorbed. In the lens module of the present invention, the lens barrel and the lens holder are matched by loosely fitting and non-locking threads, and the elastic tube is used for the lens barrel. The locking is realized with the mirror base, so that the locking force between the lens barrel and the lens holder is uniform, and the adjustment can be avoided. The process is not easy to adjust due to the different or uneven locking force. In addition, by placing a stop ring under the thread and the internal thread outside the meshing, the relationship between the external thread and the inner crepe during the focusing process can be The debris generated by the wear and tear prevents the debris from affecting the imaging effect of the lens module. In summary, the present invention has indeed met the requirements of the invention patent, and the patent application is filed according to law. The preferred embodiment of the present invention is not to be construed as limiting the scope of the present invention. The equivalent modifications and variations of the present invention in light of the spirit of the invention are intended to be included within the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a lens module according to an embodiment of the present invention. [0020] FIG. 2 is a lens module of FIG. Another angle is an exploded view. 3 is a perspective view showing the assembly of the lens module of FIG. 1. 4 is a cross-sectional view of the lens module shown in FIG. 3 taken along the IV-IV direction. [Description of main component symbols] Lens module: 10 [0024] Lens barrel: 11 Ο [0025] Actuating section: 111 [0026] Shafting section: 112 [0027] Extension: 113 [0028] First step Face: 114 [0029] Groove: 111a [0030] External thread: 112a 〇 [0031] Mirror seat: 12 [0032] Through hole: 121 [0033] Upper end face: 122 [0034] Lower end face: 123 [0035] Retaining ring: 124 [0036] Second step surface: 125 [0037] Internal thread: 121a 098138178 Form number A0101 Page 9 / Total 16 pages 0982065492-0 201116879 [0038] Elastic element: 13 [0039] Ring part: 131 [0040] Shrapnel ·· 132
098138178 表單編號A0101 第10頁/共16頁 0982065492-0098138178 Form No. A0101 Page 10 of 16 0982065492-0