M330525 八、新型說明： 【新型所屬之技術領域】 輸入裝置，特別是關於一種 用以聚焦及反射光線之指紋 本創作係有關一種光學式指紋 使用一具有曲面及反射面之稜鏡 輸入裝置。 【先前技術】 請參照第1圖’係顯示美國專利US6，謂，946號所揭露 之指紋影像擷取裝置’其係採用三稜鏡搭配透鏡元件取得指紋 影像。圖中’餘影像練裝置丨包含—三稜鏡元件U、— 透鏡元件12缝-影像感測元件13，此架構中，—光路i4a、 14b及14c行徑經過提供手指貼附之三稜鏡元件u，再藉由透 鏡元件12聚焦成像。由於指紋影像擷取裝置丨之體積受到三 稜鏡與透鏡元件之物距所限而無法縮小，未能達到應有輕便 性0 請參照第2圖，係顯示美國專利US6,75〇,955所揭露之 指紋光學感測裝置，其採用透鏡組搭配反射鏡來取得指紋影 像。圖中，指紋光學感測裝置2包含一第一反射元件21、第 二反射元件22以及第三反射元件23，光學感測裝置2之光源 24所產生之光束20需藉由第一反射元件21、第二反射元件 22以及第三反射元件23之三片反射元件以協助透鏡組27之 聚焦成像於影像感測元件28。由於指紋光學感測裝置2需要 M330525 較多反射元件，造成系統零件過於繁複且組裝技術困難。 有鑑於習知技藝之各項問題，為了能夠兼顧解決之，本 創作人基於多年研究開發與諸多實務經驗，提出一種且有以曲 • 蚊稜鏡元叙⑽纽反射親之設計裝置，叫為改盖上 • 述缺點之實現方式與依據。 〃、口 【新型内容】 • 有鑑於此，本新型之目的就是在提供-種指紋影像輸入 裝置’以解決物距過大以及技術繁複，無法有效減少指紋影像 輸入裝置之體積的問題。 輯糊狀目的，龜供—指_像輸人裝置，至包 -含_絲、1-光學元件、—第二絲元件及—光感測元 件。光源用以發射-光束，第一光學元件具有一第一反射面以 籲 提供一使用者之手指接觸’以及此光源透過此第-反射面及此 手指之指紋選擇性反射，-第二光學元件具有至少—曲面以及 至少一第二反射面，此曲面聚焦來自此第一光學元件之此光束 ， 至此第二反射面進行反射。光感測元件係接收來自此第二光學 元件之此光束以形成一指紋影像。 茲為使貴審查委員對本創作之技術特徵及所達到之功 效有更進一步之瞭解與認識，僅佐以較佳之實施例及配合詳細 之說明如後。 6 M330525 【實施方式】 以下將參照相關圖式，說明依本創作較佳實施例之指紋 影像輸入裝置，為使便於理解，下述實施例中之相同元件係以 相同之符號標示來說明。 明參閱第3圖’其係為本創作之指紋輸入裝置之示意圖。 圖中，指紋輸入裝置3包含一光源31、一第一光學元件32、 一第二光學元件33以及光感測元件34。光源31用以發射一 f 光束362，第一光學元件32具有一第一反射面321以提供一 使用者之手指35接觸，以及此光源31透過此第一反射面321 及此手指之指紋選擇性反射。 使用者之手指35可放置於第一光學元件32之第一反射 面321上，由於手指35之指紋為一立體紋路，當手指％貼附 第一反射面321時，手指35指紋之凸起紋路會接觸第一反射 面321，光源31所發出之光於凸起紋路接觸第一反射面321 之區域產生折射’如光束361。而手指35指紋之低凹紋路不 會接觸第一反射面321，所以光源31所發出之光於此指紋無 ‘ 接觸之區域產生反射至第二光學元件33，如光束362。 第二光學元件33包含一曲面331以及一第二反射面 332，曲面331接收第一光學元件32之光束362，進行聚焦至 第二反射面332進行反射至光感測元件34，如光束362。光感 測元件34接收光束362後將光訊號轉換成電性訊號以輸出一 7 M330525 影像。 上述之光源31較佳為一光纖(Fiber)、一背光模組 (Backlight)、一發光二極體(LED)、一有機發光二極體(⑽d) 錢一固態雷射㈣，第4學元件32較佳的是三稜鏡％， 三角形狀可折射與反射光線，第二光學元件33包含一曲面331 及第二反射面332，曲面331較佳為一圓弧形曲面或一可供光 源31所發出之光聚焦，第二反射面332較佳為在第二光學元 件33之平面3321上鍍一反射膜3322。 影像感測元件34較佳為一 CM〇s影像偵測器(CM〇s Image Sensor，CIS)或是一電荷耦合元件(Charge-e〇upled 也如， CCD)。其中，光感測元件34較佳的是包含一透鏡組，以更有 效地將光聚焦成像。 請參閱第4圖，其係本創作之指紋影像輸入裝置之實施 例之示意圖。圖中，指紋影像輸入裝置4包含一點光源之發光 二極體41、一三稜鏡42卜一具有圓弧曲面431及兩個反射面 432、432a之稜鏡43及光感測元件44。光感測元件44係包含 一透鏡組441與一 CMOS影像偵測器442。其中，反射面432、 432a係為稜鏡43之表面4322及4322a上鑛反射膜4321與 4321a而形成。發光二極體41所發出之光於指紋凸起紋路接 觸三稜鏡421之區域產生折射，而此指紋之低凹紋路且無接觸 三稜鏡421之區域產生反射至圓形曲面431聚焦。光束經過反 M330525 射面432、432a反射至透鏡組441聚焦成像，由CM〇s影像 偵測器442處理成為一手指指紋影像。 請參閱第5圖，其係本創作之指紋影像輸入裝置之另一 實施例之示意圖。圖中，指紋影像輸入裝置5包含一作為面光 _ 源之有機發光二極體51、一三稜鏡42卜一具有圓弧曲面431 及兩個反射面432、432a之稜鏡43、透鏡組441與CMOS影 像偵測器442。其中，反射面432、432a係為稜鏡43之表面 1 4322及4322a上鍍反射膜4321與4321a而形成。與第4圖所 示之指紋影像輸入裝置4相比，指紋影像輸入裝置5係以有機 發光二極體51做為面光源，其效果較點光源為佳。 由上述說明可得知，本創作之指紋影像輸入裝置使用具 有一曲面及至少一反射面的菱鏡，可有效地降低組裝複雜性， 並在較小的體積裡提供足夠的光行進路徑使光所產生的光束 可於成像於光感測元件上。 以上所述僅為舉娜’ _為關性者。任何未脫離本 創作之精神與範疇，而對其進行之等效修改或變更，均應包含 於後附之申請專利範圍中。 9 M330525 【圖式簡單說明】 第1圖係為習知技藝之指紋影像擷取裝置之示意圖； 第2圖係為習知技藝之另一指紋光學感測裝置之示意 圖， : 第3圖係為本創作之指紋輸入裝置之示意圖； ， 第4圖係為本創作之指紋影像輸入裝置之第一實施例之 不意圖，以及 • 第5圖係為本創作之指紋影像輸入裝置之第二實施例之 示意圖。M330525 VIII. New Description: [New Technology Field] Input device, especially for a fingerprint used to focus and reflect light. This author is about an optical fingerprint using a 稜鏡 input device with a curved surface and a reflective surface. [Prior Art] Referring to Fig. 1, there is shown a U.S. Patent No. 6, which is a fingerprint image capturing device disclosed in No. 946, which uses a three-inch lens unit to obtain a fingerprint image. In the figure, the 'remaining image training device 丨 includes three elements U, a lens element 12 slit-image sensing element 13, and in this structure, the optical paths i4a, 14b and 14c pass through the three-dimensional element that provides the finger attachment. u, the image is focused by the lens element 12. Since the volume of the fingerprint image capturing device is limited by the object distance between the lens and the lens element, it cannot be reduced, and the lightness is not achieved. Please refer to FIG. 2, which shows US Patent No. 6,75,955. The disclosed fingerprint optical sensing device uses a lens group and a mirror to obtain a fingerprint image. In the figure, the fingerprint optical sensing device 2 includes a first reflective element 21, a second reflective element 22 and a third reflective element 23. The light beam 20 generated by the light source 24 of the optical sensing device 2 is required to pass through the first reflective element 21 The three reflective elements of the second reflective element 22 and the third reflective element 23 assist in focusing the image of the lens group 27 on the image sensing element 28. Since the fingerprint optical sensing device 2 requires more reflective components of the M330525, the system components are too complicated and the assembly technique is difficult. In view of the various problems of the prior art, in order to be able to solve the problem, the creator proposed a design device based on years of research and development and many practical experiences, and has a designation of the • 稜鏡 稜鏡 ( (10) Newton Reflexion, called Replacing the implementation and basis of the shortcomings. 〃, 口 [New content] • In view of this, the purpose of the present invention is to provide a fingerprint image input device to solve the problem that the object distance is too large and the technique is complicated, and the volume of the fingerprint image input device cannot be effectively reduced. The purpose of the paste, turtle supply - refers to the image of the input device, to the package - containing _ wire, 1- optical components, - second wire components and - light sensing components. The light source is configured to emit a light beam, the first optical element has a first reflective surface to provide a finger contact of the user, and the light source is selectively reflected by the first reflective surface and the fingerprint of the finger, and the second optical component There is at least a curved surface and at least a second reflective surface that focuses the light beam from the first optical element, and the second reflective surface reflects. The light sensing element receives the light beam from the second optical element to form a fingerprint image. In order to give your reviewers a better understanding and understanding of the technical features of the creation and the results achieved, only the preferred embodiments and the detailed descriptions are as follows. 6 M330525 [Embodiment] Hereinafter, the fingerprint image input device according to the preferred embodiment will be described with reference to the related drawings. For the sake of easy understanding, the same components in the following embodiments are denoted by the same reference numerals. Referring to Figure 3, it is a schematic diagram of the fingerprint input device of the present invention. In the figure, the fingerprint input device 3 includes a light source 31, a first optical element 32, a second optical element 33, and a light sensing element 34. The light source 31 is configured to emit an f-beam 362. The first optical component 32 has a first reflective surface 321 to provide a user's finger 35 contact, and the light source 31 transmits the fingerprint through the first reflective surface 321 and the finger. reflection. The finger 35 of the user can be placed on the first reflective surface 321 of the first optical component 32. Since the fingerprint of the finger 35 is a three-dimensional texture, when the finger is attached to the first reflective surface 321, the convex pattern of the finger 35 fingerprint The first reflecting surface 321 is contacted, and the light emitted by the light source 31 is refracted as the light beam 361 in a region where the convex grain contacts the first reflecting surface 321 . The low concave line of the fingerprint of the finger 35 does not contact the first reflecting surface 321, so that the light emitted by the light source 31 is reflected to the second optical element 33, such as the light beam 362, in the area where the fingerprint does not contact. The second optical element 33 includes a curved surface 331 and a second reflective surface 332. The curved surface 331 receives the light beam 362 of the first optical element 32 and is focused to the second reflective surface 332 for reflection to the light sensing element 34, such as the light beam 362. The light sensing component 34 receives the light beam 362 and converts the optical signal into an electrical signal to output a 7 M330525 image. The light source 31 is preferably a fiber, a backlight, a light-emitting diode (LED), an organic light-emitting diode ((10)d), a solid-state laser (four), and a fourth element. 32 is preferably three 稜鏡%, the triangular shape can refract and reflect light, and the second optical element 33 includes a curved surface 331 and a second reflective surface 332. The curved surface 331 is preferably a circular curved surface or a light source 31. The emitted light is focused, and the second reflecting surface 332 is preferably plated with a reflective film 3322 on the plane 3321 of the second optical element 33. The image sensing component 34 is preferably a CM〇s Image Sensor (CIS) or a charge coupled component (Charge-e〇upled, eg, CCD). Among other things, the light sensing element 34 preferably includes a lens group to more effectively focus the light for imaging. Please refer to FIG. 4, which is a schematic diagram of an embodiment of the fingerprint image input device of the present invention. In the figure, the fingerprint image input device 4 includes a light source diode 41, a three-turn 42-shaped arc having a circular curved surface 431 and two reflecting surfaces 432 and 432a, and a light sensing element 44. The light sensing element 44 includes a lens group 441 and a CMOS image detector 442. Among them, the reflecting surfaces 432 and 432a are formed by the mineral reflecting films 4321 and 4321a on the surfaces 4322 and 4322a of the crucible 43. The light emitted by the light-emitting diode 41 is refracted in the region where the fingerprint convex line contacts the three-sided 421, and the low-pitched and non-contacted area of the fingerprint is reflected to the circular curved surface 431 to be focused. The light beam is reflected by the anti-M330525 surface 432, 432a to the lens group 441 for focusing imaging, and processed by the CM 〇s image detector 442 into a fingerprint image. Please refer to FIG. 5, which is a schematic diagram of another embodiment of the fingerprint image input device of the present invention. In the figure, the fingerprint image input device 5 includes an organic light-emitting diode 51 as a surface light source, a triple-turn 42 and a curved surface 431 having two curved surfaces 431 and 432a, and a lens group. 441 and CMOS image detector 442. Among them, the reflecting surfaces 432 and 432a are formed by plating the reflecting films 4321 and 4321a on the surfaces 1442 and 4322a of the crucible 43. Compared with the fingerprint image input device 4 shown in Fig. 4, the fingerprint image input device 5 uses the organic light-emitting diode 51 as a surface light source, and the effect is better than that of the point light source. It can be seen from the above description that the fingerprint image input device of the present invention uses a prism having a curved surface and at least one reflecting surface, which can effectively reduce assembly complexity and provide sufficient light traveling path to make light in a small volume. The resulting beam can be imaged onto the light sensing element. The above is only for the genus. Any equivalent modifications or alterations to the spirit and scope of this creation should be included in the scope of the appended patent application. 9 M330525 [Simplified illustration of the drawings] Fig. 1 is a schematic diagram of a fingerprint image capturing device of the prior art; Fig. 2 is a schematic diagram of another fingerprint optical sensing device of the prior art, : Fig. 3 is A schematic diagram of a fingerprint input device of the present invention; FIG. 4 is a schematic view of the first embodiment of the fingerprint image input device of the present invention, and FIG. 5 is a second embodiment of the fingerprint image input device of the present invention Schematic diagram.
10 M330525 【主要元件符號說明】 11 ··三稜鏡元件； 12 :透鏡元件； 13 :影像感測元件； ^ 14a、14b、14c :光路； • 15 :光源； 20 :光束； • 21 :第一反射元件； 22 :第二反射元件； 23 ··第三反射元件； 24 :光源； . 27 :透鏡組； 28 :影像感測元件； 31 :光源元件； • 32 :第一光學元件； 321 :三棱鏡； 33 :第二光學元件； 331 :曲面稜鏡； 332 :反射面； 3321 :菱鏡之表面； 3322 :反射膜； 11 M330525 34 :光感測元件； 35 :手指； 361 :光束； 362 :光束； : 4:指紋影像輸入裝置； • 41 :點光源之發光二極體； 421 :三稜鏡； • 43:第二光學元件； 431 :圓弧曲面； 432、432a :反射面； 4321、 4321a :反射膜； 4322、 4322a :菱鏡之表面； 44 :光感測元件； 441 :透鏡組； • 442 : CMOS影像偵測器； • 5 ··指紋影像輸入裝置；以及 51 :面光源之有機發光二極體。 1210 M330525 [Description of main component symbols] 11 · · Three-element component; 12 : Lens component; 13 : Image sensing component; ^ 14a, 14b, 14c: optical path; • 15: light source; 20: light beam; a reflective element; 22: a second reflective element; 23 · a third reflective element; 24: a light source; . 27: a lens group; 28: an image sensing element; 31: a light source element; : triangular prism; 33: second optical element; 331 : curved surface; 332: reflective surface; 3321 : surface of the prism; 3322: reflective film; 11 M330525 34: light sensing element; 35: finger; 362: light beam; : 4: fingerprint image input device; • 41: light source diode of point light source; 421: three turns; • 43: second optical element; 431: curved surface; 432, 432a: reflective surface; 4321, 4321a: reflective film; 4322, 4322a: surface of the mirror; 44: light sensing element; 441: lens group; • 442: CMOS image detector; • 5 · fingerprint image input device; An organic light-emitting diode of a light source. 12