1362552 100年.12月29日修正替換頁 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種自動對焦裝置，尤其係一種結構簡單、 體積小之自動對焦裝置。 【先前技術】 [0002] 數位相機及手機用之鏡頭模組於組裝鏡頭後，受各部件 製造工藝限制，鏡頭焦距難免存在誤差，須經調整、校 對，方可使透過鏡頭之影像清晰地投射到數位相機之影 像感測器上。 [0003] 先前數位相機及手機用相機之鏡頭模組主要係於相機鏡 頭上設置調整裝置，使鏡頭前後移動，進而調整鏡頭與 影像感測器之間之距離，從而實現對焦之目的。 [0004] —種自動對焦裝置主要包括一鏡頭組、一驅動馬達及一 鏡座。驅動馬達由侧壁伸出一輸出軸，並利用該輸出軸 所配設之傳動構造（例如螺紋）帶動一輸出齒輪及該鏡 頭組以實現對焦。爲使驅動馬達側邊之輸出齒輪帶動該 鏡頭組實現對焦，需經過二到三個齒輪傳動元件才能使 機構到達適當位置以帶動鏡頭組改變對焦位置。 [0005] 該自動對焦裝置藉由驅動馬達驅動齒輪組傳動以實現對 焦，相對需要較大空間以供各元件組裝，故，該對焦裝 置結構複雜、·不易組裝、鏡頭尺寸過大。 【發明内容】 [0006] 有鑒於此，有必要提供一種結構簡單且體積小之自動對 焦裝置。 095148514 表單編號A0101 第3頁/共16頁 1003488399-0 [0007] 100年.12月29日接正替換頁 至種自動對焦裝置，包括―鏡筒、至少—成像鏡頭組及 至^馬達，所述各成像鏡頭組與所述各馬達相應的安 裝於所述鏡筒上，所述各馬料別包括—轉子，所述各 轉子之軸線與相應的成像鏡頭組之光軸平行，所述各馬 達藉由摩擦傳動帶動相應的成像鏡頭組轉動。 [0008] 種自動對焦裝置，包括一鏡筒、至少一成像鏡頭組、 用於成像之影像感測器及至少一馬達，所述各成像鏡 頭組及所述各馬達相應的安裝於所述鏡筒上，所述各馬 達分別包括一轉子，所述各轉子之軸線與相應的成像鏡 頭組之光軸平行，所述各馬達藉由摩擦傳動帶動相應的 成像鏡頭組轉動》 [0009] 所述自動對焦裝置採用摩擦傳動方式使成像鏡頭組轉動 以實現對焦，使得該自動對焦裝置結構簡單；另，所述 馬達安裝於所述鏡筒上，所述轉子之軸線與所述成像鏡 頭組之光軸平行，使得該自動對焦裝置高度及體積小》 【實施方式】 [0010] [0011] [0012] 下面將結合附圖對本發明作進一步詳細說明。 如圖1及圖2所示，本發明第一實施例提供之自動對焦裝 置10包括成像鏡頭組11、鏡筒12、馬達13及皮帶14。 成像鏡頭組11包括至少一鏡片組112及用於支撐該鏡片組 112之支架11〇。本實施例中，僅以一鏡片組112爲例進 行說明。成像鏡頭組11之光軸記爲00(’且該支架110外 壁設有外螺紋1102»優選的，支架11〇設有用於收容皮帶 14、防止皮帶14沿支架110縱向上下滑動之第一凹槽 095148514 表單编號Α0101 第4買/共16頁 1003488399-0 1362552 100年.12月29日按正.ί«頁 1104 °優選的，將支架110設計成筒狀，相應的鏡片組 112容置於該筒壁上。 [0013] 馬達13設置於鏡筒12上’馬達13包括一轉子130，轉子 130之軸線記作l，轉子13〇之軸線L與成像鏡頭組丨丨之光 軸〇〇(平行》優選的，轉子13〇上設有用於收容皮帶14、 防止皮帶14沿轉子130縱向上下滑動之第二凹槽丨32。本 實施例中，馬達13及轉子130之外形皆爲圓柱結構。於其 他實施例中，當將第二凹槽132製作成環形時，亦可將馬 達13及轉子130製作成橢圓柱狀等其他形狀。優選的，所 述馬達13為一步進馬達。 [0014] 鏡筒12内壁設有與支架110之外螺紋11〇2相配合之内螺 紋122。藉由外螺紋u〇2與内螺紋丨22之螺紋配合作用， 成像鏡頭組11可於鏡筒12内上下運動。鏡筒12面朝馬達 13之側壁上設有供皮帶14通過之至少一開口 κι β鏡筒 12内設有影像感測器16，物體藉由鏡片组丨丨2成像於影像 感測器16上。可以理解的係，亦可用凸輪傳動結構代替 上述之螺紋配合結構。 [0015] 皮帶14部分裝設於支架11〇之第一凹槽11〇4且部分套設 於馬達13之第二凹槽132上，轉子130藉由皮帶14與成像 鏡頭組11相連，當馬達13轉動時，在皮帶14與第二凹槽 132之間摩擦力作用下，轉子130帶動皮帶14轉動，又由 於皮帶14與第一凹槽1104之間摩擦力作用，皮帶14帶動 成像鏡頭組11轉動。從而，當馬達13沿不同方向轉動時 ，成像鏡頭組11可於鏡筒12内上下運動，以實現對焦功 095148514 表單編號Α0101 第5頁/共16頁 1003488399-0 1362552 100年.12月29日核正替換頁 [0016] 可選擇的係，可以用尼龍繩代替皮帶14而採用繩傳動之 方式帶動成像鏡頭組11於鏡筒12内上下運動，以實現對 焦功能。 [0017] 由於馬達13與成像鏡頭組11均設置於鏡筒12上，轉子13 之軸線與成像鏡頭組11之光軸平行，且轉子130藉由皮帶 之傳動作用而帶動成像鏡頭組11，即馬達13之裝設不會 對自動對焦裝置10整體之高度造成影響，該自動對焦裝 置10之高度僅僅由鏡筒自身高度決定，相對於先前技術 中設置複雜齒輪結構而影響其整體高度及體積而言，自 動對焦裝置10高度及體積較小。另外，因未採用先前技 術中通常使用之複雜之齒輪結構，從而使得結構簡單。 [0018] 上述實施例係針對一鏡片組112及用於支撐該鏡片組之支 架110而設置一馬達13及皮帶14，根據具體情況，亦可以 對多個鏡片組分別設置栢應的馬達及皮帶，即控制各鏡 片組分別運動而達成自動對焦。 [0019] 如圖3所示，本發明第二實施例提供之自動對焦裝置10’ 包括成像鏡頭組11、11’ 、鏡筒12、馬達13、13’及皮 帶 14、14，。 [0020] 成像鏡頭組11、11’分別包括一鏡片組112、112’及用 於支撐相應的鏡片組之支架110、110’ 。成像鏡頭組11 、11’之光軸記爲00(，且該支架110、110’外壁分別 設有外螺紋1102、1102’ 。優選的，支架110、110’上 分別設有用於收容皮帶14、14’ 、防止皮帶14、14’上 下滑動之第一凹槽11 04及第二凹槽1105。優選的，將支 095148514 表單编號A0101 第6頁/共16頁 1003488399-0 13.62552 100年.12月29日接正替$頁 架110、110均設計成筒狀，鏡片組112、11 2，容置於 相應的筒壁上。 [0021] 馬達13、13’設置於鏡筒12上’馬達13、13，分別包括 一轉子130、130’ ，轉子130、130，之軸線分別記作L 、L ，轉子130、130’之軸線l、L，與成像鏡頭組11 、11’之光軸00(平行。優選的，轉子13〇、130’上設 有用於收容皮帶14'14’ 、防止皮帶14、14，上下滑動 之第三凹槽1321及第四凹槽1322。本實施例中，馬達13 、13’及轉子130、130’之外形優選爲圓柱結構。於其 他實施例中，當將第三凹槽1321及第四凹槽1322製作成 環形時，亦可將馬達13 '13，及轉子130、130，製作成 橢圓柱狀等其他形狀。優選的，所述馬達13、丨3，均為 步進馬達。 [0022] 鏡筒12内壁設有與支架110、110，之外螺紋11〇2、 11 0 2相配合之内螺紋12 2。優選的，將上述内螺紋12 2 分段設置》藉由外螺紋11〇2、1102，與内螺紋122之螺 紋配合作用，成像鏡頭組n、U，可分別於鏡筒12内進 行上下運動。鏡筒12面朝馬達13、13，之側壁上設有分 別供皮帶14、14’通過之至少一開口 121、121，。鏡筒 12内没有影像感測器16，物體藉由鏡片組11 2、112，後 成像於影像感測器16上。可以理解的係，亦可用凸輪傳 動結構代替上述之螺紋配合結構。 095148514 皮帶14、14’分別部分裝設於支架11〇、11〇，之第一凹 槽1104、第二凹槽1105上，部分套設於馬達13、13，之 第三凹槽1321、第四凹槽1322上，轉子130、130，分別 表單編號A0101 第7頁/共16頁 1003488399-0 [0023] 1362552 从. ίί°〇年12月 29 日 藉由皮帶14、14’與相應的成像鏡頭組u、u，相連，^s 當馬達13、13’轉動時，於皮帶14、14，與相應的第三 凹槽1321、第四凹槽1322之間摩擦力作用下，轉子13〇 、130分別帶動皮帶14、14，轉動，又由於皮帶14、 14與相應的第一凹槽11〇4、第二凹槽11〇5之間摩擦力 作用，皮帶14、14，帶動相應的成像鏡頭組11、11，轉 動。從而，當馬達13、13，沿不同方向轉動時，成像鏡 頭組11、11’可分別於鏡筒12内上下運動，以實現對焦 功能。 [0024] 可選擇地係，可以用尼龍繩代替皮帶14、14，，從而採 用繩傳動之方式帶動成像鏡頭組11、11，分別於鏡筒12 内上下運動，以實現對焦功能。 [0025] 由於馬達13、13’與成像鏡頭組π、η，均設置於鏡筒 12上，轉子13、13’之軸線與成像鏡頭組u、u，之光 軸平行，且轉子130、130’藉由皮帶之傳動作用而帶動 成像鏡頭組11、11’ ，即馬達13、13’之裝設不會對自 動對焦裝置10整體之高度造成影響，該自動對焦裝置 10之高度僅僅由鏡筒12自身高度決定，相對於先前技 術中設置複雜齒輪結構而影響其整體高度及體積而言， 自動對焦裝置10南度及體積較小。並且，因未採用先 前技術中通常使用之複雜之齒輪結構，從而使得結構簡 單。 [0026] 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，舉凡熟習本案技 095148514 表單編號A0101 第8頁/共16頁 1003488399-0 1362552 100年12月29日修正替換頁 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。 [0027] 【圖式簡單說明】 圖1係本發明第一實施例之自動對焦裝置之立體示意圖。 [0028] 圖2係圖1中自動對焦裝置之剖面示意圖。 [0029] 圖3係本發明第二實施例之自動對焦裝置之剖面示意圖。 [0030] 【主要元件符號說明】 自動對焦裝置：10、10’ [0031] 成像鏡頭組：11、11’ [0032] 支架：110、110’ [0033] 鏡片組：112、112’ [0034] 外螺紋：1102、1102’ [0035] 第一凹槽：1104 [0036] 第二凹槽：1105、132 [0037] 鏡筒：12 [0038] 開口 ： 121、121’ [0039] 内螺紋：122 [0040] 馬達：13、13’ [0041] 轉子：130、130’ [0042] 第三凹槽：1321 095148514 表單編號A0101 第9頁/共16頁 1003488399-0 1362552 [0043] [0044] [0045] 第四凹槽： 皮帶：14、 影像感測器 1322 14， ：16 100年.12月29日修正替換頁 095148514 表單编號A0101 第10頁/共16頁 1003488399-01362552 100. December 29th revised replacement page VI. Description of the Invention: [Technical Field] [0001] The present invention relates to an autofocus device, and more particularly to an autofocus device having a simple structure and a small size. [Prior Art] [0002] After assembling the lens, the lens module for digital cameras and mobile phones is limited by the manufacturing process of each component. The focal length of the lens is inevitably subject to error. It must be adjusted and proofed to make the image through the lens clearly projected. Go to the image sensor of the digital camera. [0003] The lens module of the previous digital camera and mobile phone camera is mainly provided with an adjusting device on the camera lens to move the lens back and forth, thereby adjusting the distance between the lens and the image sensor, thereby achieving the purpose of focusing. [0004] An autofocus device mainly includes a lens group, a drive motor, and a lens holder. The drive motor extends from the side wall to an output shaft and utilizes a transmission configuration (e.g., a thread) provided by the output shaft to drive an output gear and the lens assembly for focusing. In order for the output gear on the side of the drive motor to drive the lens group to focus, two to three gear transmission components are required to bring the mechanism to the proper position to drive the lens group to change the focus position. [0005] The autofocus device drives the gear train to drive the focus by the drive motor, and requires relatively large space for assembly of the components. Therefore, the focus device has a complicated structure, is difficult to assemble, and has a large lens size. SUMMARY OF THE INVENTION [0006] In view of the above, it is necessary to provide an automatic focusing device that is simple in structure and small in size. 095148514 Form No. A0101 Page 3 of 16 1003488399-0 [0007] 100 years. December 29th to replace the replacement page to the auto-focus device, including "the lens barrel, at least - the imaging lens group and the motor" Each of the imaging lens groups is mounted on the lens barrel corresponding to each of the motors, and each of the horses includes a rotor, and the axes of the rotors are parallel to the optical axes of the corresponding imaging lens groups, the motors The corresponding imaging lens group is rotated by the friction drive. [0008] An autofocus device includes a lens barrel, at least one imaging lens group, an image sensor for imaging, and at least one motor, and each of the imaging lens groups and the motors are correspondingly mounted on the mirror Each of the motors includes a rotor, the axes of the rotors being parallel to the optical axes of the respective imaging lens groups, and the motors are driven by the friction drive to rotate the corresponding imaging lens groups. The auto-focusing device rotates the imaging lens group to achieve focusing by friction driving, so that the auto-focusing device has a simple structure; and the motor is mounted on the lens barrel, the axis of the rotor and the light of the imaging lens group The axes are parallel, so that the height and volume of the autofocus device are small. [Embodiment] [0012] [0012] The present invention will be further described in detail below with reference to the accompanying drawings. As shown in FIG. 1 and FIG. 2, the autofocus device 10 according to the first embodiment of the present invention includes an imaging lens group 11, a lens barrel 12, a motor 13, and a belt 14. The imaging lens set 11 includes at least one lens group 112 and a holder 11 for supporting the lens group 112. In the present embodiment, only one lens group 112 will be described as an example. The optical axis of the imaging lens group 11 is denoted by 00 (' and the outer wall of the bracket 110 is provided with external threads 1102». Preferably, the bracket 11 is provided with a first groove for accommodating the belt 14 and preventing the belt 14 from sliding up and down along the longitudinal direction of the bracket 110. 095148514 Form No. 1010101 4th Buy/Total 16 Pages 1003488399-0 1362552 100 years. December 29th Press positive. ί«Page 1104 ° Preferably, the bracket 110 is designed in a cylindrical shape, and the corresponding lens group 112 is placed. [0013] The motor 13 is disposed on the lens barrel 12. The motor 13 includes a rotor 130, and the axis of the rotor 130 is denoted by 1, the axis L of the rotor 13 is aligned with the optical axis of the imaging lens assembly ( Preferably, the rotor 13 is provided with a second recess 32 for accommodating the belt 14 and preventing the belt 14 from sliding up and down along the longitudinal direction of the rotor 130. In this embodiment, the motor 13 and the rotor 130 are all cylindrical. In other embodiments, when the second recess 132 is formed into a ring shape, the motor 13 and the rotor 130 may be formed into other shapes such as an elliptical cylinder. Preferably, the motor 13 is a stepping motor. [0014] The inner wall of the lens barrel 12 is provided to cooperate with the external thread 11〇2 of the bracket 110. The internal thread 122. The external lens 〇2 cooperates with the thread of the internal thread 丨22, and the imaging lens group 11 can move up and down in the lens barrel 12. The lens barrel 12 faces the side wall of the motor 13 for the belt 14 to pass. The image sensor 16 is disposed in the at least one opening κι lens barrel 12, and the object is imaged on the image sensor 16 by the lens group 。2. It can be understood that the cam gear structure can also be used instead of the above thread matching. [0015] The belt 14 is partially disposed on the first groove 11〇4 of the bracket 11〇 and partially sleeved on the second groove 132 of the motor 13, and the rotor 130 is connected to the imaging lens group 11 by the belt 14. When the motor 13 rotates, under the frictional force between the belt 14 and the second groove 132, the rotor 130 drives the belt 14 to rotate, and the belt 14 drives the imaging lens due to the friction between the belt 14 and the first groove 1104. The group 11 is rotated. Thus, when the motor 13 is rotated in different directions, the imaging lens group 11 can be moved up and down in the lens barrel 12 to achieve the focusing work 095148514. Form number Α 0101 Page 5 / Total 16 pages 1003488399-0 1362552 100 years. December 29th nuclear replacement page [0016] Alternatively, the nylon lens can be used instead of the belt 14 to drive the imaging lens group 11 up and down in the lens barrel 12 to realize the focusing function. [0017] Since the motor 13 and the imaging lens group 11 are both disposed on On the lens barrel 12, the axis of the rotor 13 is parallel to the optical axis of the imaging lens group 11, and the rotor 130 drives the imaging lens group 11 by the transmission of the belt, that is, the mounting of the motor 13 does not affect the entire autofocus device 10. The height is affected. The height of the auto-focus device 10 is determined only by the height of the lens barrel itself. The auto-focus device 10 is small in height and volume compared to the prior art in which a complicated gear structure is provided to affect its overall height and volume. In addition, the structure is simple because the complicated gear structure commonly used in the prior art is not used. [0018] In the above embodiment, a motor 13 and a belt 14 are disposed for a lens group 112 and a bracket 110 for supporting the lens group. According to a specific case, a motor and a belt of the Bai Ying may be separately disposed on the plurality of lens groups. That is, the respective lens groups are controlled to move to achieve auto focus. As shown in FIG. 3, the autofocus device 10' according to the second embodiment of the present invention includes an imaging lens group 11, 11', a lens barrel 12, motors 13, 13', and leather belts 14, 14. [0020] The imaging lens sets 11, 11' respectively include a lens group 112, 112' and brackets 110, 110' for supporting the respective lens groups. The optical axes of the imaging lens sets 11 and 11' are denoted as 00 (and the outer walls of the brackets 110, 110' are respectively provided with external threads 1102, 1102'. Preferably, the brackets 110, 110' are respectively provided for accommodating the belt 14, 14', the first groove 11 04 and the second groove 1105 for preventing the belts 14 and 14' from sliding up and down. Preferably, the branch 095148514 is formed on the form number A0101. Page 6 of 16 pages 1003488399-0 13.62552 100 years.12 On the 29th, the page frames 110 and 110 are designed into a cylindrical shape, and the lens groups 112 and 11 2 are placed on the corresponding cylinder walls. [0021] The motors 13, 13' are disposed on the lens barrel 12 'motor 13, 13, respectively, comprising a rotor 130, 130', the rotor 130, 130, the axes of which are denoted as L, L, the axes l, L of the rotor 130, 130', and the optical axis 00 of the imaging lens set 11, 11' (Parallel. Preferably, the rotor 13A, 130' is provided with a third recess 1321 and a fourth recess 1322 for accommodating the belt 14'14', preventing the belts 14, 14 from sliding up and down. In this embodiment, the motor 13, 13' and the outer shape of the rotor 130, 130' are preferably cylindrical. In other embodiments, when the third groove 1321 and the third When the four grooves 1322 are formed in a ring shape, the motor 13'13 and the rotors 130 and 130 may be formed into other shapes such as an elliptical cylinder. Preferably, the motors 13 and 3 are stepping motors. 0022] The inner wall of the lens barrel 12 is provided with internal threads 12 2 which cooperate with the brackets 110, 110 and the external threads 11 〇 2, 11 0 2 . Preferably, the above-mentioned internal thread 12 2 is segmented by the external thread 11 〇2, 1102, cooperate with the thread of the internal thread 122, and the imaging lens sets n and U can move up and down respectively in the lens barrel 12. The lens barrel 12 faces the motors 13, 13 and the side walls are provided with belts respectively. 14, 14' passes through at least one opening 121, 121. There is no image sensor 16 in the lens barrel 12, and the object is imaged by the lens group 11 2, 112, and then imaged on the image sensor 16. The cam drive structure can also be used instead of the threaded structure described above. 095148514 The belts 14, 14' are respectively partially mounted on the brackets 11〇, 11〇, the first recess 1104, the second recess 1105, and partially sleeved on the motor 13 13, the third groove 1321, the fourth groove 1322, the rotor 130, 130, respectively No. A0101 Page 7 of 16 1003488399-0 [0023] 1362552 From December 29th of the next year, the belts 14, 14' are connected to the corresponding imaging lens sets u, u, ^s when the motor 13 When 13' rotates, under the frictional force between the belts 14, 14 and the corresponding third groove 1321, the fourth groove 1322, the rotors 13, 130, 130 respectively drive the belts 14, 14 to rotate, and again due to the belt 14, 14 and the corresponding first groove 11 〇 4, the second groove 11 〇 5 between the frictional force, the belt 14, 14, drive the corresponding imaging lens set 11, 11, and rotate. Thus, when the motors 13, 13 are rotated in different directions, the imaging lens groups 11, 11' can be moved up and down in the lens barrel 12, respectively, to achieve the focusing function. [0024] Alternatively, the belts 14, 14 may be replaced by nylon ropes, so that the imaging lens groups 11, 11 are driven by the rope drive to move up and down in the lens barrel 12 respectively to achieve the focusing function. [0025] Since the motors 13, 13' and the imaging lens groups π, η are both disposed on the lens barrel 12, the axes of the rotors 13, 13' are parallel to the optical axes of the imaging lens groups u, u, and the rotors 130, 130 'The driving lens groups 11, 11' are driven by the belt driving action, that is, the mounting of the motors 13, 13' does not affect the overall height of the auto-focusing device 10, and the height of the auto-focusing device 10 is only by the lens barrel. 12 is determined by its own height, and the autofocus device 10 has a small southerness and a smaller volume than the prior art in which a complicated gear structure is provided to affect its overall height and volume. Moreover, the structure is simple because the complicated gear structure commonly used in the prior art is not used. In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiment, and is familiar with the present invention 095148514 Form No. A0101 Page 8 / Total 16 Page 1003488399-0 1362552 100 years Equivalent modifications or variations made by persons skilled in the art to replace the page on December 29, in accordance with the spirit of the present invention are intended to be included in the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an autofocus apparatus according to a first embodiment of the present invention. 2 is a schematic cross-sectional view of the autofocus device of FIG. 1. 3 is a schematic cross-sectional view showing an autofocus device according to a second embodiment of the present invention. [Explanation of main component symbols] Autofocus device: 10, 10' [0031] Imaging lens group: 11, 11' [0032] Bracket: 110, 110' [0033] Lens group: 112, 112' [0034] External thread: 1102, 1102' [0035] First groove: 1104 [0036] Second groove: 1105, 132 [0037] Lens barrel: 12 [0038] Opening: 121, 121' [0039] Internal thread: 122 [0040] Motor: 13, 13' [0041] Rotor: 130, 130' [0042] Third Groove: 1321 095148514 Form No. A0101 Page 9 / Total 16 Page 1003488399-0 1362552 [0043] [0044] [0045 ] Fourth groove: Belt: 14, Image sensor 1322 14, :16 100. December 29, revised replacement page 095148514 Form No. A0101 Page 10 / Total 16 Page 1003488399-0