201003165 九、發明說明： 【發明所屬之技術領域】 本發明涉及一鏡頭模組，尤其涉及一用於便攜式電子 設備之鏡頭模組。 【先前技術】 隨著通訊技術之快速發展，數位相機已被人們廣泛地 應用於行動電話、筆記型電腦或個人數位助理（Personal Digital Assistant, PDA )等便攜式電子設備中（請參見 Development of compact camera module having auto focus actuator and mechanical shutter system for mobile phone » Control, Automation and Systems, 2007. ICCAS '07. International Conference on 17-20 Oct. 2007 Page(s):2319-2322)。於體積較小之便攜式電子裝置中，輕 薄短小之數位相機變成為不可或缺之需求。惟，人們於要 求便攜式電子裝置體積小之前提下，更希望所拍攝出來之 圖片具有較高之清晰度。 ' 惟，常見之所拍攝出來之圖片具有較高之清晰度之數 位相機之鏡頭模組（即高階鏡頭模組）至少具有三個鏡片。 而該三個鏡片中，為了滿足光學設計之需要’靠近影像感 測器之鏡片之直徑大於其它兩鏡片之直徑。此時’該鏡頭 模組中收容該三個鏡片之鏡筒之内徑最少要等於該靠近影 像感測器之鏡片之直徑，從而使得該鏡頭模組之鏡筒之體 積較大，具有該鏡頭模組之數位相機之體積較大，直接致 使具有該數位相機之行動電話、筆記型電腦或個人數位助 5 201003165 理專便攜式電子没備體積增大，給人們之工作及生活帶來 了許多不必要之麻煩。 【發明内容】 有鑒於此，提供一體積較小、結構較緊湊之用於便攜 式電子設備之鏡頭模組實為必要。 一用於便攜式電子設備之鏡頭模組，其包括一兩端開 口之鏡筒及收容於該鏡筒内之第一鏡片及第二鏡片，該鏡 頭模組進一步包括一位於該鏡筒靠近像側之端部之第三鏡 片，該第三鏡片具有一固定部，該鏡筒靠近像侧之端部具 有-與該固定部相卡固配合之配合部，以使該第三鏡片與 該鏡筒靠近像侧之端面固接為一體。 〃 一用於便攜式電子設備之鏡頭模組，其包括—兩端開 口之鏡筒及收容於該鏡筒内之第一鏡片及第二鏡片 頭模組進-步包括—位於該鏡筒#近像侧之端部之^二 =㈣片藉由謬合黏結方法黏附於該鏡筒靠近；： 與先别技術相比，本發明實施例所提供之 該鏡筒靠近像側之端部之端面固接為一體，從而：鏡片與 ，之體積，進而使得具有該鏡筒之用:二= 之鏡頭模組具有較小之體積，較緊凑之結構。電子δ又備 【實施方式】 [其為本發明第—實施例提供 其包括-具有外螺紋之鏡= 谷於鏡同2〇内之第—鏡片24及第二鏡片26，—位於該 201003165 鏡筒20 —端之第三鏡片30，一收容於鏡筒2〇内之且位於 该第二鏡片26與第三鏡片30之間之視場光闌4〇、一具有 與鏡筒20之外螺紋相配合之内螺紋之鏡座5〇及收容於該 鏡座50内之影像感測元件60。 該鏡筒20具有第一端202及與該第一端2〇2相對之第 二端204。該第一端202具有一孔徑光闌2〇6。該孔徑光闌 206用於控制進入該鏡筒2〇内之光通量。 卜該鏡筒20之第二端204之周緣具有一配合部2〇8，而 苐一鏡片30具有一光學部3〇2及一圍繞該光學部之非 光學部3〇4,該非光學部3〇4之周緣具有一與該鏡筒叨之 配合部208相卡固配合之固定部3〇6以將該第三鏡片3〇與 該鏡筒20固接為一體，且第三鏡片3〇之直徑小於或等於 鏡筒20之外徑，大於鏡筒2〇之内徑以防止將裝有第三鏡 片30之鏡筒20旋入鏡座5〇時損壞第三鏡片3〇。 ^本實施例中，該配合部208為凸出之環狀階台，該固 定部306為環狀凸台，該配合部肅與固定部鳩之接觸 面均設置為相互垂直之平面’該第三鏡片3〇為雙面非球面 之』膠鏡#且與第二鏡片24相對之表面設置有—可遽除 紅外線以防止正常拍照時紅外線進入影像感測元件6 0之红 外戴止濾光臈31。 ^組裝時，鏡筒20之配合部208與第三鏡片30之固定 4 306之整段平面接觸互卡承靠，以使鏡筒及第三鏡片 3〇固疋。為了使得鏡筒20與第三鏡片30固定得更好，亦 可於鏡筒20與第三鏡片3〇之間點膠。 201003165 由於該第三鏡片30固接於兮 牧义逆鏡茼20之第二端2〇4 為面上，並沒有位於鏡筒2〇之肉加//A ^ 之内部，從而該鏡筒20且右 較小之體積。 ，、有 當然’該配合部208血IW]中如 〇固疋部306之接觸面亦可 置為具有相同傾角之斜面。 9叹 面鏡片或單面非球面鏡 當然，該第三鏡片30亦可為球 片等其它結構之玻璃鏡片。 該第-鏡片24及第二鏡片26均為雙面非球面之塑勝 鏡片’且相互分離。當'然，該第-鏡片24及第二鏡片％ 亦可相互卡合固接為—體。# <然，該第—鏡片Μ及第 片26亦可為球面鏡片、單㈣球面鏡片等其它結構之破璃 鏡片。當然，亦可有更多之鏡片收容於鏡筒2〇内部，不限 於本實施例中之兩個鏡片（第―鏡片24及第二鏡片 應根據實際需要來設定。 »亥視場光闌40呈環狀，其位於第三鏡片3〇與第二鏡 片26之間。該視場光闌4〇可限制穿過第三鏡片3〇之光量， 進而限制進人影像感測元件6G之光量，防止因光線散射及 反射造成之影像鬼影、光斑等現象。 4參閱圖2’其為本發明第二實施例提供之用於便攜式 電子設備之鏡頭模組（圖未示）之第三鏡片3〇a。該鏡頭模 組與鏡頭模組10基本相同，其具有第三鏡片3〇a，該第三 鏡片30a具有一光學部302a及圍繞該光學部3〇2a之非光學 部304a ’不同之處在於··該非光學部3〇扣具有一園繞該光 學部302a之環狀凹槽3〇6a。當然，此時之鏡筒之第二端具 201003165 有與該環狀凹槽306a相卡固配合之環狀凸起，以使此時之 鏡筒與該第三鏡片30a卡合承靠為一體。當然，此時之環 狀凹槽306a即為該第三鏡片30a之固定部。 可理解，該非光學部304a亦可具有一圍繞該光學部 302a之環狀凸起，此時之鏡筒之第二端具有與該環狀凸起 相配合之環狀凹槽亦能實現本發明之目之。 請參閱圖3,其為本發明第三實施例提供之用於便攜式 電子設備之鏡頭模組（圖未示）之第三鏡片30b。該鏡頭模 組與鏡頭模組10基本相同，其具有第三鏡片30b，該第三 鏡片30b具有一光學部302b及圍繞該光學部302b之非光 學部304b，不同之處在於：該非光學部304b具有兩個圍繞 該光學部302b之間隔分佈之弧形凹槽306b。 當然，此時之鏡筒之第二端具有與該凹槽306b相卡固 配合之凸起，以使此時之鏡筒與該第三鏡片30b卡合承靠 為一體。當然，該弧形凹槽306b亦可為方形、三角形或五 邊形等其它幾何形狀凹槽。當然，此時之兩個弧形凹槽306b 即為第三鏡片30b之固定部。 可理解，該凹槽306b亦可為通孔。同樣還可理解，該 非光學部304b亦可具有三個或四個或五個等更多圍繞該光 學部302b之間隔分佈之凹槽，此時之鏡筒之第二端具有數 量與該凹槽數量相同之且與該凹槽相卡固配合之凸起亦能 實現本發明之目之。 請參閱圖4,其為本發明第四實施例提供之用於便攜式 電子設備之鏡頭模組（圖未示）之第三鏡片30c。該鏡頭模 9 201003165 組與鏡頭模組10基本相同，其具有第三鏡片30c，該第三 鏡片30c具有一光學部302c及圍繞該光學部302c之非光學 部304c，不同之處在於：該非光學部304c具有三個圍繞該 光學部302c之間隔分佈之圓形凹槽306c。當然，此時之鏡 筒之第二端具有與該凹槽306c相卡固配合之凸起，以使此 時之鏡筒與該第三鏡片30c卡合承靠為一體。 請參閱圖5,其為本發明第五實施例提供之鏡頭模組 10d。該鏡頭模組10d與鏡頭模組10基本相同，其具有鏡 筒20d及設於鏡筒20d第二端204d之第三鏡片30d，不同 之處在於：該鏡頭模組10d鏡筒20d沒有配合部，第三鏡 片30d沒有固定部，直接藉由膠合黏結方法將第三鏡片30d 直接黏附於該鏡筒20d之第二端204d之端面上。 綜上所述，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】 圖1係本發明第一實施例之用於便攜式電子設備之鏡 頭模組之截面示意圖。 圖2係本發明第二實施例之用於便攜式電子設備之鏡 頭模組之第三鏡片之平面示意圖。 圖3係本發明第三實施例之用於便攜式電子設備之鏡 頭模組之第三鏡片之平面示意圖。 201003165 圖4係本發明第四實施例之用於便攜式電子設備之鏡 頭模組之第三鏡片之平面示意圖。 圖5係本發明第五實施例之用於便攜式電子設備之鏡 頭模組之截面示意圖。 【主要元件符號說明】 鏡頭模組 10 、 10d ΛΑ- Μίζ 鏡闾 20 、 20d 第一鏡片 24 第二鏡片 26 第三鏡片 30、30a、30b、30c、30d 視場光闌 40 鏡座 50 影像感測元件 60 第一端 202 第二端 204 、 204d 孔徑光闌 206 配合部 208 光學部 302、302a、302b、302c 非光學部 304 、 304a 、 304b 、 304c 固定部 306 紅外截止濾、光膜 31 環狀凹槽 306a 凹槽 306b ' 306c 11201003165 IX. Description of the Invention: [Technical Field] The present invention relates to a lens module, and more particularly to a lens module for a portable electronic device. [Prior Art] With the rapid development of communication technology, digital cameras have been widely used in mobile electronic devices such as mobile phones, notebook computers or personal digital assistants (PDAs) (see Development of compact camera). Module having auto focus actuator and mechanical shutter system for mobile phone » Control, Automation and Systems, 2007. ICCAS '07. International Conference on 17-20 Oct. 2007 Page(s): 2319-2322). In smaller portable electronic devices, light and short digital cameras have become an indispensable requirement. However, people are required to lift the portable electronic device before it is small, and it is more desirable to have a higher definition of the captured image. 'However, the commonly-produced image has a higher definition of the lens module of the digital camera (ie, the high-end lens module) has at least three lenses. Among the three lenses, in order to meet the needs of optical design, the diameter of the lens close to the image sensor is larger than the diameter of the other two lenses. At this time, the inner diameter of the lens barrel accommodating the three lenses in the lens module is at least equal to the diameter of the lens close to the image sensor, so that the lens barrel of the lens module has a large volume, and the lens has the lens The large size of the digital camera of the module directly causes the mobile phone, notebook computer or personal digital assistant with the digital camera. 5 201003165 The portable electronic device has no volume increase, which brings a lot of people's work and life. The necessary trouble. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a lens module for a portable electronic device that is small in size and compact in structure. A lens module for a portable electronic device, comprising: a lens barrel opened at both ends; and a first lens and a second lens received in the lens barrel, the lens module further comprising a lens barrel located near the image side a third lens of the end portion, the third lens has a fixing portion, and the end portion of the lens barrel near the image side has a mating portion that is in abutting engagement with the fixing portion, so that the third lens and the lens barrel The end faces near the image side are fixed together.镜头 A lens module for a portable electronic device, comprising: a lens barrel that is open at both ends and a first lens and a second lens head module that are received in the lens barrel are further included - located in the lens barrel The image of the end of the image side is adhered to the lens barrel by a twist-bonding method; the end surface of the lens barrel near the image side is provided by the embodiment of the present invention. The fixing is integrated, so that the lens and the volume are used to make the lens barrel: the lens module of the second = has a smaller volume and a more compact structure. The electronic δ is further provided in the embodiment of the present invention. [The present invention provides a mirror including an external thread] a third lens 30 at the end of the barrel 20, a field diaphragm 4 收容 received in the lens barrel 2 and located between the second lens 26 and the third lens 30, and having a thread external to the lens barrel 20 The mirror base 5 of the matched internal thread and the image sensing element 60 housed in the lens holder 50. The barrel 20 has a first end 202 and a second end 204 opposite the first end 2〇2. The first end 202 has an aperture stop 2〇6. The aperture stop 206 is used to control the amount of light entering the barrel 2 . The periphery of the second end 204 of the lens barrel 20 has a mating portion 2〇8, and the first lens 30 has an optical portion 3〇2 and a non-optical portion 3〇4 surrounding the optical portion. The non-optical portion 3 The periphery of the crucible 4 has a fixing portion 3〇6 which is engaged with the mating portion 208 of the lens barrel to fix the third lens 3〇 and the lens barrel 20 integrally, and the third lens 3 The diameter is less than or equal to the outer diameter of the lens barrel 20, and is larger than the inner diameter of the lens barrel 2〇 to prevent the third lens 3 from being damaged when the lens barrel 20 containing the third lens 30 is screwed into the lens holder 5〇. In this embodiment, the engaging portion 208 is a convex annular step, and the fixing portion 306 is an annular boss, and the contact surfaces of the engaging portion and the fixing portion are both disposed perpendicular to each other. The three lenses 3 are double-sided aspherical plastic mirrors # and the surface opposite to the second lens 24 is provided with an infrared ray filter that can remove infrared rays to prevent infrared rays from entering the image sensing element 60 when photographing normally. 31. When assembled, the mating portion 208 of the lens barrel 20 and the entire surface of the fixing 4 306 of the third lens 30 are in contact with each other to hold the lens barrel and the third lens 3 in place. In order to fix the lens barrel 20 and the third lens 30 better, it is also possible to dispense between the lens barrel 20 and the third lens unit 3. 201003165 Since the third lens 30 is fixed to the second end 2〇4 of the 兮 义 reverse mirror 20, it is not inside the meat of the lens barrel 2//A ^, so that the lens barrel 20 And the smaller volume on the right. Of course, the contact surface of the tamping portion 306 may be set to have a slope having the same inclination angle. 9 singer lens or single-sided aspherical mirror Of course, the third lens 30 can also be a glass lens of other structures such as a ball. The first lens 24 and the second lens 26 are both double-sided aspherical lenses and are separated from each other. When it is, the first lens 24 and the second lens % can also be engaged and fixed to each other. # < However, the first lens segment and the second film 26 may also be spherical lenses of other structures such as a spherical lens or a single (four) spherical lens. Of course, there may be more lenses housed inside the lens barrel 2, not limited to the two lenses in the embodiment (the first lens 24 and the second lens should be set according to actual needs.) The ring is located between the third lens 3〇 and the second lens 26. The field stop 4〇 can limit the amount of light passing through the third lens 3, thereby limiting the amount of light entering the image sensing element 6G. Preventing image ghosts, spots, etc. caused by light scattering and reflection. 4 Referring to FIG. 2, a third lens 3 for a lens module (not shown) of a portable electronic device according to a second embodiment of the present invention is provided. The lens module is substantially the same as the lens module 10, and has a third lens 3a having an optical portion 302a and a non-optical portion 304a surrounding the optical portion 3a2a. The non-optical portion 3 has an annular groove 3〇6a around the optical portion 302a. Of course, the second end of the lens barrel 201003165 has a card with the annular groove 306a. Solid-fit annular protrusion to engage the lens barrel at this time with the third lens 30a In this case, the annular groove 306a is the fixed portion of the third lens 30a. It can be understood that the non-optical portion 304a can also have an annular protrusion surrounding the optical portion 302a. The second end of the lens barrel has an annular groove matched with the annular protrusion to achieve the object of the present invention. Please refer to FIG. 3, which is a portable electronic device according to a third embodiment of the present invention. a third lens 30b of the lens module (not shown). The lens module is substantially the same as the lens module 10, and has a third lens 30b having an optical portion 302b and surrounding the optical portion 302b. The non-optical portion 304b is different in that the non-optical portion 304b has two arcuate grooves 306b distributed around the interval of the optical portion 302b. Of course, the second end of the lens barrel at this time has a phase opposite to the groove 306b. The protrusions are engaged with the protrusions so that the lens barrel is engaged with the third lens 30b at this time. Of course, the curved grooves 306b may also be square, triangular or pentagonal and other geometric concave shapes. Slot. Of course, the two curved grooves 306b at this time are the first The fixing portion of the lens 30b. It can be understood that the groove 306b can also be a through hole. It is also understood that the non-optical portion 304b can also have three or four or five or more spaced intervals around the optical portion 302b. The groove, wherein the second end of the lens barrel has the same number of protrusions as the number of the grooves and is in abutment with the groove, the object of the present invention can be achieved. Referring to FIG. 4, The third embodiment of the present invention provides a third lens 30c for a lens module (not shown) of a portable electronic device. The lens module 9 201003165 is substantially identical to the lens module 10, and has a third lens 30c. The third lens 30c has an optical portion 302c and a non-optical portion 304c surrounding the optical portion 302c, except that the non-optical portion 304c has three circular grooves 306c distributed around the optical portion 302c. Of course, the second end of the lens barrel at this time has a protrusion that is in abutting engagement with the groove 306c, so that the lens barrel and the third lens 30c are engaged and integrated at this time. Please refer to FIG. 5, which is a lens module 10d according to a fifth embodiment of the present invention. The lens module 10d is substantially the same as the lens module 10, and has a lens barrel 20d and a third lens 30d disposed at the second end 204d of the lens barrel 20d, except that the lens module 10d has no matching portion of the lens barrel 20d. The third lens 30d has no fixing portion, and the third lens 30d is directly adhered to the end surface of the second end 204d of the lens barrel 20d by a gluing and bonding method. In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the present invention are intended to be included within the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic cross-sectional view showing a lens module for a portable electronic device according to a first embodiment of the present invention. Figure 2 is a plan view showing a third lens of a lens module for a portable electronic device according to a second embodiment of the present invention. Figure 3 is a plan view showing a third lens of a lens module for a portable electronic device according to a third embodiment of the present invention. 201003165 FIG. 4 is a plan view showing a third lens of a lens module for a portable electronic device according to a fourth embodiment of the present invention. Figure 5 is a cross-sectional view showing a lens module for a portable electronic device in accordance with a fifth embodiment of the present invention. [Description of main component symbols] Lens module 10, 10d ΛΑ- Μίζ Mirror 20, 20d First lens 24 Second lens 26 Third lens 30, 30a, 30b, 30c, 30d Field stop 40 Mirror holder 50 Image sense Measuring element 60 first end 202 second end 204, 204d aperture stop 206 mating portion 208 optical portion 302, 302a, 302b, 302c non-optical portion 304, 304a, 304b, 304c fixed portion 306 infrared cut filter, light film 31 ring Groove 306a recess 306b ' 306c 11