1360715 六、 [0001] [0002] [0003] 【先前技術】 之位 發明說明： 【發明所屬之技術領域】 本發明係關於一種自動封焦結構，尤其係關於一種可精 確控制鏡頭移動之自動對f'結構及應用該自動對靠結構 之數位相機模組。 於數位相财’對;|、結構是保證所錢影像取得清晰效 果之關鍵步驟。對线構係絲調節綱和影像感測元 件之間距離，使得像，私影_—件之成像表面 。.目前’常用之株用纏魏，即根據被 拍攝目標之气g，由電路翁卿相應 置上’ ％而¥被拍攝目標清^)- 習知自€對焦可分爲f動式自動對焦式自動對焦 兩類°主動式自動對焦：由相機發射或者超聲波 到被攝物體，感應I教據被I物蹲反g回麥之紅外線或 ，皮’通過相機紅f _##rfy(DSP，Digital lgnal 算機與被攝物體之距離 ’然後控制對焦驅動器移動鏡頭，達到革確對焦。被動 式自動對焦：相機接受來自被攝物體本身之反光來判斷 距離以進行自動辦焦。此種對焦方式之優點在於：不需 發射光或波，降低能耗，同時於光線良好之情況下能準 確對焦；缺點係··於光線亮度及對比度不足時對焦困難 。爲克服上述缺點，多數相機上設計自動對焦辅助燈（ Aut〇 F〇cus Aid Lights)，發射光束照亮被攝物體來 幫助對焦，從而使被動式自動對焦利用類似主動式自動 〇94136011^WA〇101 第3頁/共12頁 1003490521-0 [0004]1360715 對焦之方式克服由於光線亮度及對比度等不足所造成之 對焦困難。 然，於主動式自動對焦或被動式自動對焦中獲取相機與 被攝物體之距離後，需要使鏡頭移動一定距離，而該位 移之移動控制藉由致動器來控制，然，鏡頭於實際滑動 過程中，並不完全會滑到預定位置，故需要辨別鏡頭於 數位相機中之實際滑動位置，否則難以準確控制鏡頭之 移動，習知技術大都是依靠計算出所需移動量，然後藉 由步進電機驅動鏡頭移動所需移動量，由於移動過程沒 有對鏡頭位置進行貪時監測，鏡頭移動量雈彳主不能得到 準確控制，理想移動量與竟際#齋¥存在龚異，致使自 動對焦效果不好1360715 6. [0001] [0002] [Prior Art] Description of the Invention: [Technical Field] The present invention relates to an automatic sealing structure, and more particularly to an automatic pair that can precisely control lens movement f' structure and application of the digital camera module of the automatic structure. It is a key step in ensuring that the image of the money has a clear effect. The distance between the wire structure adjustment and the image sensing element is such that the image is imaged on the image surface. At present, the commonly used strain is wrapped around Wei, that is, according to the gas g of the target being photographed, by the circuit Wengqing correspondingly set '% and ¥ is the target to clear ^) - 知知 from € focus can be divided into f-motion auto focus Two types of autofocus: Active autofocus: emitted by the camera or ultrasonically to the subject, the I teaching is based on the IR of the object, or the skin 'by the camera red f _##rfy (DSP, Digital lgnal computer and the distance between the subject 'and then control the focus drive to move the lens to achieve the focus. Passive auto focus: the camera accepts the reflection from the subject itself to determine the distance for automatic focus. This way of focusing The advantages are: no need to emit light or wave, reduce energy consumption, and can focus accurately when the light is good; the disadvantage is that the focus is difficult when the brightness and contrast of the light are insufficient. To overcome the above shortcomings, autofocus is designed on most cameras. Aux〇F〇cus Aid Lights, the light beam illuminates the subject to help focus, so that passive autofocus uses a similar active automatic 〇94136011^WA〇1 01 Page 3 of 12 1003490521-0 [0004] 1360715 The way of focusing overcomes the difficulty of focusing due to insufficient brightness and contrast. However, the camera and subject are acquired in active autofocus or passive autofocus. After the distance, the lens needs to be moved by a certain distance, and the movement control of the displacement is controlled by the actuator. However, the lens does not completely slide to the predetermined position during the actual sliding process, so it is necessary to distinguish the lens from the digital camera. The actual sliding position in the middle, otherwise it is difficult to accurately control the movement of the lens, the conventional technology mostly relies on calculating the required amount of movement, and then the moving amount required to drive the lens by the stepping motor, because the movement process does not greedy the lens position Time monitoring, the amount of lens movement can not be accurately controlled, the ideal amount of movement and the actual situation #斋¥有龚异, resulting in poor autofocus effect
【發明内容】 \ I .. Ί . / [0005] [0006] 有鑒於此，有必要提供一種可準確控制f:7頭移動量之自 動對焦結構。 Π „ »0 Λ ηSUMMARY OF THE INVENTION \ I .. Ί . / [0005] [0006] In view of the above, it is necessary to provide an autofocus structure that can accurately control the amount of movement of f:7 heads. „ „ »0 Λ η
.. ：lofellectuoJ ...-: ... ! 另，有必要挺供一種具有#準#醇£贫叙頰移動量之自動 對焦結構之數位相機·模la OlHH08 [0007] —種自動對焦結構，其包括：一鏡筒、一致動器及一鏡 座，該鏡筒之外週壁設有電極，該致動器驅動鏡筒運動 ，該鏡筒開有一通孔，該鏡筒置於該鏡座内且與該鏡座 滑動連接，該鏡座之通孔包括一内週壁，該内週壁上設 有電阻，該鏡筒之電極與該鏡座之電阻接觸，該電阻與 該電極分別與一電源正負極相連組成一負回授控制單元 ，該負回授控制單元可將測得鏡筒之位置回授給致動器 〇 094136011表單編號 A0101 % 4 1/# 12 1 1003490521-0 1360715 [0008] 一種數位相機模組，其包括：一自動對焦結構及一影像 感測元件，該自動對焦結構包括：一鏡筒、一致動器及 一鏡座，該鏡筒之外週壁設有電極，該致動器驅動鏡筒 運動，該鏡筒開有一通孔，該鏡筒置於該鏡座内且與該 鏡座滑動連接，該鏡座之通孔包括一内週壁，該内週壁 上設有電阻，該鏡筒之電極與該鏡座之電阻接觸，該電 阻與該電極分別與一電源正負極相連組成一負回授控制 單元，該負回授控制單元可將測得鏡筒之位置回授給致 動器；該影像感測元件位於可/接-收.鏡、筒之光線位置。 [0009] 與習知技術相比名β迷之:自麵對:焦結構蠢私鏡筒上設置 電極及鏡座内/¾置電阻，ώ成。 - _ ...元，-該負 回授控制单元可對鏡頭位置進# S授//從-^ >確控制鏡 頭移動，實現高品質:¾自動對焦。 .:· ........ 【實施方式】 [0010] 本發明優選實施方式自動對焦^結雜應择於數位相機模組 ·,: lofellecfual β，請參見第一圖，'該f骑學括一鏡筒10、一 鏡座2 0、::Tf壓^0 A、一影像感測器 50及一基座60。 [0011] 該鏡筒10為中空圓筒狀，其内設置有鏡片組12,該鏡片 組12由複數鏡片組成。該鏡筒10之外圓週對稱開有二條 狀凹槽14，每一凹槽14内固定設有一電極16，該電極16 大致呈條狀，其藉由黏膠固定於該凹槽14内。 [0012] 鏡座20為中空圓台狀，該鏡座20包括一容置部202及一凸 緣部204。該容置部202為圓柱體，其中部開有一通孔21 ，該通孔21首先接收光線之一端設有一蓋板22，其封蓋 094136011表單編號1 A0101 f 5 I/# 12 I 1003490521-0 1360715 於該通孔21。該蓋板22為一平板玻璃，即可使光線通過 ，亦可阻擋灰塵等雜質進入而污染鏡片組12。該凸緣部.. :lofellectuoJ ...-: ... ! In addition, it is necessary to provide a digital camera with an autofocus structure with a #准# alcohol-poor cheek movement. Model la OlHH08 [0007] - Autofocus structure The utility model comprises: a lens barrel, an actuator and a lens holder, wherein the outer peripheral wall of the lens barrel is provided with an electrode, and the actuator drives the movement of the lens barrel, the lens barrel is provided with a through hole, and the lens barrel is placed on the lens barrel The lens holder is slidably connected to the lens holder, and the through hole of the lens holder includes an inner peripheral wall, and the inner peripheral wall is provided with a resistor, and the electrode of the lens barrel is in contact with the resistance of the mirror holder, the resistor and the electrode Connected to a positive and negative power supply respectively to form a negative feedback control unit, the negative feedback control unit can return the position of the measured lens barrel to the actuator 〇094136011 Form No. A0101 % 4 1/# 12 1 1003490521-0 1360715 [0008] A digital camera module includes: an autofocus structure and an image sensing component, the autofocus structure includes: a lens barrel, an actuator, and a lens holder, the outer circumference of the lens barrel is An electrode, the actuator drives the movement of the lens barrel, and the lens barrel has a through hole, the lens barrel In the lens holder and slidingly connected to the lens holder, the through hole of the lens holder includes an inner peripheral wall, and the inner peripheral wall is provided with a resistor, and the electrode of the lens barrel is in contact with the resistance of the mirror holder, and the resistor is The electrodes are respectively connected with a positive and negative poles of the power source to form a negative feedback control unit, and the negative feedback control unit can return the position of the measured lens barrel to the actuator; the image sensing component is located at the connectable/receivable. The position of the light of the mirror and the tube. [0009] Compared with the prior art, the name β is fascinated: from the face: the electrode structure and the mirror housing are provided with a resistor and a resistor. - _ ... yuan, - The negative feedback control unit can control the lens position to / # from - ^ > indeed control lens movement to achieve high quality: 3⁄4 auto focus. . . . . . . [Embodiment] [0010] The preferred embodiment of the present invention is to focus on the digital camera module, and: lofellecfual β, please refer to the first figure, 'the f The riding frame includes a lens barrel 10, a lens holder 20, a :Tf pressure ^0 A, an image sensor 50 and a base 60. [0011] The lens barrel 10 has a hollow cylindrical shape in which a lens group 12 is disposed, and the lens group 12 is composed of a plurality of lenses. Two barrels 14 are symmetrically formed on the outer circumference of the lens barrel 10. An electrode 16 is fixed in each of the grooves 14. The electrode 16 is substantially strip-shaped and is fixed in the groove 14 by adhesive. [0012] The lens holder 20 has a hollow truncated cone shape, and the lens holder 20 includes a receiving portion 202 and a flange portion 204. The accommodating portion 202 is a cylindrical body, and a through hole 21 is formed in the middle portion thereof. The through hole 21 is first provided with a cover plate 22 at one end of the light, and the cover 094136011 is formed by the number 1 A0101 f 5 I/# 12 I 1003490521-0 1360715 is in the through hole 21. The cover plate 22 is a flat glass, which can pass light, and can also block impurities such as dust from entering the contaminated lens group 12. The flange portion
I 204為一立方體’一端為矩形開槽206，該通孔21之相對 蓋板22—端’其貫穿凸緣部2〇4之中部且與矩形開槽206 相貫通。容置部202之外徑小於凸緣部204之邊長，而於 兩者相接處形成台階，而鏡座20之凸緣部204之矩形開槽 206邊長大於容置部202之通孔21之内直徑。該鏡筒10滑 動配合於該鏡座20之通孔21内。該通孔21之内圓週壁上 對稱開有二長槽24，每一長橹24内設有一片狀電阻26， 鏡筒10之電極16與該i祖26相接觸，該發阻26及該電極I 204 is a cube. One end is a rectangular slot 206, and the opposite cover 22 end of the through hole 21 penetrates the middle of the flange portion 2〇4 and penetrates the rectangular slot 206. The outer diameter of the accommodating portion 202 is smaller than the side length of the flange portion 204, and a step is formed at the junction of the two, and the rectangular slot 206 of the flange portion 204 of the lens holder 20 has a longer side than the through hole of the accommodating portion 202. Diameter within 21 inches. The lens barrel 10 is slidably fitted into the through hole 21 of the lens holder 20. The inner circumferential wall of the through hole 21 is symmetrically formed with two long slots 24, and each long cymbal 24 is provided with a sheet-shaped resistor 26, and the electrode 16 of the lens barrel 10 is in contact with the i-ances 26, and the resistor 26 and the electrode
輸出電壓亦相應發生變扣，其變化量該鏡筒10之滑動The output voltage is also buckled accordingly, and the amount of change is the sliding of the lens barrel 10.
[0013] 致動器30為一壓電致動器，該壓電致動器由絕緣層及包 覆於該絕緣層内之壓電陶瓷材料組成。該致動器30位於 該鏡筒10之下且—端與鏡筒10固定連接’另一端固定於 透光板40上。該壓電陶瓷材料於通電情況下，其產生變 形，從而帶動鏡筒1〇上下移動，從而改變鏡筒10與影像 感測元件50之間距’實現自動對焦功能。 [0014] 透光板40蓋於影像感測元件50上，以保護影像感測元件 50，避免灰塵水汽污染該影像感測元件50 β該透光板40 094136()11表單編號 Α0101 第 δ 頁/共 12 f 1003490521-0 1360715 係—透光玻璃，其一表面可鑛瘦一層紅外截止遽膜 (ILeut Coating) ’以遽除來自於被攝物反射之光線 中之紅外線，從而提高成像品質。 [0015] 該影像感測元件50通常可為電荷耦合器（Charge[0013] The actuator 30 is a piezoelectric actuator composed of an insulating layer and a piezoelectric ceramic material encased in the insulating layer. The actuator 30 is located below the lens barrel 10 and is fixedly connected to the lens barrel 10 at the other end. The other end is fixed to the light-transmitting plate 40. When the piezoelectric ceramic material is energized, it is deformed, thereby driving the lens barrel 1 〇 to move up and down, thereby changing the distance between the lens barrel 10 and the image sensing element 50 to realize the autofocus function. [0014] The light transmissive plate 40 is covered on the image sensing component 50 to protect the image sensing component 50 from dust and water vapor contamination of the image sensing component 50. The light transmissive plate 40 094136 () 11 form number Α 0101 δ page / Total 12 f 1003490521-0 1360715 - Light-transmissive glass, one surface of which can be thinned by an infrared cut-off film (ILeut Coating) to remove infrared rays from the light reflected by the object, thereby improving image quality. [0015] The image sensing element 50 can generally be a charge coupler (Charge)
Coupled Device ’下稱CCD) ’或者補充性氧化金屬半 導體（Complementary Metal-Oxide Semiconductor ，下稱CMOS)。該影像感測元件5〇固定於基座60内，其 用以將影像之光訊號轉變為電訊號。 [0016] [0017] 該基座6 0為一長方氧歡韻S弗以容置影參感測元件5 〇。 組裝時，先將¥像i測元件f5D「f定於，再將透 光板40蓋缓#基座60之上 以 L· 保護芝声件50。電 極1 6黏貼於該鏡筒1.0之:凹筒杰0；^定於致動器 30之土，再將致動器30'固定於透光板车〇毫/。之後將電阻 再將鏡座20之通 2 6黏貼於通軋21之内:遇k之長槽24内 孔21對準鏡筒10，使^|座2%^||!潑爾hid，此時該電極 I6分別與電$2.6¾'接气；髮緣部204抵接於 於基座6 0 Γ 以·熱Off 將鏡座30與基座60 連择在一起；致動器3〇與一控制器相連，以提供指令給 致動器30 ’將電極16與電阻26分別與電源28相連，從而 組成一負回授控制單元，之後將該負回授控制單元與上 述控制器相連’以接收回授信號，至此，該數位相機模 組組裝完畢。 t0_ ’數位_控制器接收測距裝置所侧之數據， 從而將相應之電麗施加給；1電致動器30，該虔電致動器 〇94136〇11 表單編號 A0101 第7頁/共12頁 1003490521-0 1360715 30相應產生變形，因而推動鏡筒10軸向移動，該鏡筒l〇 之電極16相對電阻26滑動，從而該電阻26之輸出電壓發 生變化，由該電壓值之變化可判斷該鏡筒10之運動相對 位置，從而將該信號再反饋於壓電致動器30之控制器， 從而將鏡筒10進一步調整之預定位置，從而實現準確對 焦0 [0019] 可以理解，該致動器30亦可應用於數位相機變焦結構中 ，該數位相機變焦結構中，分別設有固定鏡片組及可動 鏡片組，該可動鏡片組藉由可動鏡筒帶動運動》該可動 鏡筒藉由致動器驅動’從而改變可動鏡片^相對固定鏡 片組之間位置關係。同時 L: 該 4 負回授控制 單元相連，以實時控制可動鏡筒達將實時回 授之訊號傳遞給致動器，以精確控制寒在—相/機變焦位置 [0020] 可以理解’該致動器30之細錢腑4 ’並不限 於鏡筒10之下.，例如，〆筒10之週壁上， 而使該致動器Μ提:供屬令lg轉想_。 [0021] 可以理解’該電阻26可直接黏貼於該容置部2〇2之通孔21 之壁上，該電極亦可直接黏貼於該鏡筒1〇之外週壁上。 [0022]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例，舉凡 熟悉本案技藝之人士，在援依本案發日月精神所4之等效 修飾或變化，皆應包含於以下之申請專利範圍内。 【圖式簡單說明】 094136011表單编號 A0101 第8頁/共12頁 1003490521-0 1360715 [0023] 第一圖係本發明優選實施方式數位相機模組之剖面示意 圖。 【主要元件符號說明】 [0024] 鏡筒：10 [0025] 鏡片組：1 2 \ [0026] 凹槽.：14 [0027] 電極：16Coupled Device ’ hereinafter referred to as CCD) or Complementary Metal-Oxide Semiconductor (hereinafter referred to as CMOS). The image sensing component 5 is fixed in the susceptor 60 for converting the optical signal of the image into an electrical signal. [0017] [0017] The pedestal 60 is a rectangular oxygen swell to accommodate the image sensing element 5 〇. When assembling, firstly, the image measuring device f5D is set to f, and then the light-transmitting plate 40 is covered by the light-receiving plate 40. The upper surface of the base 60 is L. The protective member 50 is attached. The electrode 16 is adhered to the lens barrel 1.0: The concave cylinder is fixed to the soil of the actuator 30, and then the actuator 30' is fixed to the transparent plate 〇. After that, the resistor is then attached to the through roller 21 of the lens holder 20. Inside: the inner hole 21 of the long groove 24 of the k is aligned with the lens barrel 10, so that the seat 2%^||! Pall hid, at this time, the electrode I6 is connected to the electricity $2.63⁄4', respectively; Connected to the base 6 0 Γ to thermally connect the mirror mount 30 to the base 60; the actuator 3 is coupled to a controller to provide commands to the actuator 30 'electrode 16 and resistor 26 is respectively connected to the power source 28 to form a negative feedback control unit, and then the negative feedback control unit is connected to the controller to receive the feedback signal. At this point, the digital camera module is assembled. t0_ 'digit _ The controller receives the data on the side of the distance measuring device, thereby applying the corresponding battery to; 1 electric actuator 30, the electric actuator 〇94136〇11 Form No. A0101 Page 7 / Total 12 Page 1003490521-0 136 0715 30 correspondingly deforms, thereby pushing the lens barrel 10 to move axially, and the electrode 16 of the lens barrel slides relative to the resistor 26, so that the output voltage of the resistor 26 changes, and the lens barrel 10 can be judged by the change of the voltage value. The relative position of the motion, so that the signal is fed back to the controller of the piezoelectric actuator 30, thereby further adjusting the predetermined position of the lens barrel 10, thereby achieving accurate focus. [0019] It can be understood that the actuator 30 is also It can be applied to a digital camera zoom structure. The digital camera zoom structure is respectively provided with a fixed lens group and a movable lens group, and the movable lens group is driven by a movable lens barrel. The movable lens barrel is driven by an actuator. Thereby changing the positional relationship between the movable lens and the fixed lens group. At the same time, the L negative feedback control unit is connected, and the movable lens barrel is controlled in real time to transmit the real-time feedback signal to the actuator to accurately control the cold. - Phase/Machine Zoom Position [0020] It can be understood that 'the fine money 腑 4' of the actuator 30 is not limited to the underside of the lens barrel 10. For example, on the peripheral wall of the cylinder 10, the actuator Μ mention: [0021] It can be understood that the resistor 26 can be directly adhered to the wall of the through hole 21 of the receiving portion 2〇2, and the electrode can also be directly adhered to the outer circumference of the lens barrel 1〇. [0022] In summary, the present invention complies with the requirements of the invention patent, and the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and those who are familiar with the skill of the present invention are assisting Equivalent modifications or changes to the spirit of the Sun and Moon in this case shall be included in the scope of the following patent application. [Simple description of the drawing] 094136011 Form No. A0101 Page 8 of 12 Page 3410490521-0 1360715 [0023 The first figure is a schematic cross-sectional view of a preferred embodiment of the digital camera module of the present invention. [Main component symbol description] [0024] Lens barrel: 10 [0025] Lens group: 1 2 \ [0026] Groove.: 14 [0027] Electrode: 16
nfeilecfuo hoper fice [0033] 電阻：2 6 [0034] 壓電致動.器30 '..· V· · 一— [0035] 透光板：40 [0036] 影像感測器：50 [0037] 基座：60 [0038] 通孔：21 [0039] 電源：2 8 094136011*^^ A0101 第9頁/共12頁 1003490521-0Nfeilecfuo hoper fice [0033] Resistance: 2 6 [0034] Piezo Actuator 30 '..· V· · I—[0035] Translucent plate: 40 [0036] Image sensor: 50 [0037] Block: 60 [0038] Through Hole: 21 [0039] Power Supply: 2 8 094136011*^^ A0101 Page 9 / Total 12 Page 1003490521-0