M404439 五、新型說明： 【新型所屬之技術領域】 [0001] 本新型有關於一種指紋影像擷取裝置，更特別是關於利 用一個非平行的稜鏡且搭配廣角透鏡組之指紋影像擷取 裝置。 【先前技術】 [0002] 指紋影像擷取裝置可概分為光學形式及非光學形式。目 前大部份的指紋影像擷取裝置，係採用光學形式，其一 般應用稜鏡（Prism)、凸透鏡（Convex Lens)以及影像 感測器作為主要元件以捕捉指紋‘像- [0003] 圖1為一種傳統指紋影像擷參閱圖1， 來自光源12的光束經由稜。光束 在稜鏡14内朝向與手指10接觸的斜邊餘_，並被手指10 的影像反射至稜鏡U的另一邊。光束再經凸透鏡16¾焦 至影像感測器18上，接著拜{鱗教袍权處理以完成 指紋辨識的動作。相類似&像為诹裝置也可參閱 歐洲專利EP2039292A1。If: [0004] 為了減小指紋影像擷取裝置的體積1美國專利 US6826000B2揭露一種利用改變稜鏡的形狀，使指紋影 像擷取裝置的體積得以縮小。但此種指紋影像擷取裝置 的手指接觸面之面積過大，除了手指放置的區域外，尚 多餘了許多區域，造成指紋影像擷取裝置的體積過大。 再者，光源與透鏡及影像感測器位於不同側，棱鏡的全 反射面下方空間無法利用，這也是造成指紋影像擷取裝 表單編號A0101M404439 V. New Description: [New Technology Field] [0001] The present invention relates to a fingerprint image capturing device, and more particularly to a fingerprint image capturing device using a non-parallel cymbal and a wide-angle lens group. [Prior Art] [0002] A fingerprint image capturing device can be roughly classified into an optical form and a non-optical form. At present, most of the fingerprint image capturing devices are in optical form, and generally use Prism, Convex Lens, and image sensors as main components to capture fingerprints. [Image - [0003] Figure 1 A conventional fingerprint image Referring to Figure 1, the light beam from source 12 passes through the ribs. The beam is directed toward the beveled edge that is in contact with the finger 10 within the crucible 14 and is reflected by the image of the finger 10 to the other side of the U. The beam is then focused by the convex lens 163⁄4 onto the image sensor 18, and then processed by the scales to complete the fingerprint recognition. Similar to & like a device, see also European Patent EP2039292A1. If: [0004] In order to reduce the size of the fingerprint image capture device, US Patent No. 6826000B2 discloses a use of changing the shape of the file to reduce the size of the fingerprint image capture device. However, the area of the finger contact surface of the fingerprint image capturing device is too large, and in addition to the area where the finger is placed, many areas are redundant, resulting in an excessive volume of the fingerprint image capturing device. Furthermore, the light source is located on the different side of the lens and the image sensor, and the space below the total reflection surface of the prism cannot be utilized, which also causes the fingerprint image to be captured. Form No. A0101
第4頁/共13 S M404439 « « 置體積無法縮小的主要因素。 【新型内容】 [0005] 為解決上述問題，本創作之目的在於提供一個超小型的 指紋影像擷取裝置。 [0006] 本創作之另一目的在於提供與上述超小型指紋影像擷取 裝置搭配的廣角透鏡組。Page 4 of 13 S M404439 « « The main factor that the volume cannot be reduced. [New Content] [0005] In order to solve the above problems, the purpose of the present invention is to provide an ultra-small fingerprint image capturing device. Another object of the present invention is to provide a wide-angle lens group that is matched with the above-described ultra-small fingerprint image capturing device.
[0007] 本創作提供一種指紋影像擷取裝置，用以取得一指紋影 像，包含：一光源，用以發射一光束；一影像感測器， 用以產生該指紋影像；以及一稜鏡，用以接收該光源發 射之該光束並將該光束反射於該影像感測器，包含：一 手指接觸面，用以供一使用者的一手指放置且將該光源 之該光束反射；一第一反射面，與該手指接觸面連接且 二者間夾有一夾角α ;以及一第二反射面，與該手指接 觸面連接且二者間夾有一夾角/3，其中，該第一反射面 係反射來自該手指接觸面之該光束至該第二反射面，且 該第二反射面係反射來自該第一反射面之全部該光束至 該影像感測器。 [0008] 本創作指紋影像擷取裝置利用上述結構，可有效縮小指 紋影像擷取裝置的體積，而使指紋影像擷取裝置應用於 手機、相機…等電子產品裝置上。 【實施方式】 [0009] 圖2為本創作指紋影像擷取裝置2之一實施例之結構圖。 [0010] 參閱圖2，指紋影像擷取裝置2包含一個光源22、一個稜 鏡24、一個透鏡組26及以一個影像感測器28。本實施例 表單编號Α0101 第5頁/共13頁 M404439 指紋影像擷取裝置2係透過光源22發射出一散射光光束， 光束進入稜鏡24後，投射於放置於棱鏡24上之手指指紋 的脊線（ridge)和谷線（valley)，光束於稜鏡24内反射 後進入透鏡組26而聚焦於影像感測器28，形成一個指紋 影像。 [0011] 光源22為一個發散光源，可採用發光二極體（LED)。 [0012] 稜鏡24包含一個手指接觸面241、一個第一反射面242、 一個第二反射面243、以及一個第四面244。稜鏡24設置 的目的係為折疊光源22之光路，以使指紋影偉擷取裝置2 的體積縮小，其中當光路 裝置2將可製作的更薄。棱[0007] The present invention provides a fingerprint image capturing device for acquiring a fingerprint image, comprising: a light source for emitting a light beam; an image sensor for generating the fingerprint image; Receiving the light beam emitted by the light source and reflecting the light beam to the image sensor, comprising: a finger contact surface for placing a finger of a user and reflecting the light beam of the light source; a first reflection a surface connected to the finger contact surface and having an angle α therebetween; and a second reflective surface connected to the finger contact surface and having an included angle/3 therebetween, wherein the first reflective surface reflection is from The light beam of the finger contact surface is to the second reflective surface, and the second reflective surface reflects all of the light beam from the first reflective surface to the image sensor. [0008] The fingerprint image capturing device of the present invention can effectively reduce the volume of the fingerprint image capturing device by using the above structure, and the fingerprint image capturing device is applied to electronic device devices such as mobile phones, cameras, and the like. Embodiments [0009] FIG. 2 is a structural diagram of an embodiment of a fingerprint image capturing device 2 of the present invention. Referring to FIG. 2, the fingerprint image capturing device 2 includes a light source 22, a prism 24, a lens group 26, and an image sensor 28. In this embodiment, the form number Α0101, page 5/13, M404439, the fingerprint image capturing device 2 emits a scattered light beam through the light source 22, and the light beam enters the 稜鏡24 and is projected onto the finger fingerprint placed on the prism 24. Ridges and valleys, the light beam is reflected within the crucible 24 and enters the lens group 26 to focus on the image sensor 28 to form a fingerprint image. [0011] The light source 22 is a divergent light source, and a light emitting diode (LED) may be employed. [0012] The crucible 24 includes a finger contact surface 241, a first reflective surface 242, a second reflective surface 243, and a fourth surface 244. The purpose of the 稜鏡24 setting is to fold the light path of the light source 22 so that the volume of the fingerprint photographic device 2 is reduced, wherein the optical path device 2 will be made thinner. edge
紋影像擷取 材質製成Grain image capture material
[0013] [0014] 手指接觸面241用以供一個使用者的一指放置且將來 '㈣‘ 自光源22之光束反射。 ’ inte!!ectua< 第一反射面242與手指接觸兩241€抵，，且二者間夾有一 pr'OHprfv 夾角a。夹角a介於2:3。〜為25。。第一反射[0014] The finger contact surface 241 is used for one finger placement of a user and will be '(four)' reflected from the light beam of the light source 22 in the future. ' inte!!ectua< The first reflecting surface 242 is in contact with the finger by two 241 €, and has an angle pr of pr'OHprfv therebetween. The angle a is between 2:3. ~ for 25. . First reflection
*· ； i V >ν·ν·* · , If' .· · 面242係用以反射來自手指接觸面241之光束。 [0015] 第二反射面243與手指接觸面241連接且二者間夾有一夾 角召。夾角/3介於158°〜162°，較佳地為160°。第二反 射面242用以反射來自第一反射面242之光束至影像感測 器28。 [0016] 第四面244與第一反射面242及第二反射面243連接。 [0017] 其中，第一反射面241因為夾角a而使來自手指接觸面 表單編號A0101 第6頁/共13頁 241之光束反射超過手指接觸面241，而進入第二反射面 243，且第二反射面243因為夾角冷而使來自第一反射面 242反射之光束全部進入影像感測器28。 [0018] 再者，本實施例之指紋影像操取裝置2之手指接觸面2 41 的面積係近似或等於使用者之手指之範圍 。如此，可使 指紋影像擷取裝置2體積減小。 [0019] 本實施例之指紋影像擷取裝置2之透鏡組26係設置於稜鏡 2 4的第四面2 4 4與影像感測器2 8間，其為選擇性設置。透 鏡組26用以接收來自第二反射面243反射之所有光束，並 將此光束聚焦於影像感測器28。此透鏡組26可為廣角透 鏡，用以接收所有來自第二反射面243之所有光束。 [0020] 再者，此透鏡組26可包含至少二透鏡261、262，第一透 鏡261為負曲光度，第二透鏡262為正曲光度。透鏡組26 的數量並不以二個為限，只要能聚焦來自第二反射面243 之光束於影像感測器28即可。 [0021] 光源22、透鏡組26及影像感測器28之形式與功能，係與 習知指紋影像擷取裝置相同，在此不詳細說明。 [0022] 圖3為本創作指紋影像擷取裝置2光源22放置位置之另一 實施例之示意圖。 [0023] 參閱圖3，光源22設置之位置除了可設置於棱鏡24第四面 244外側，也可以設置於稜鏡24之第一反射面242外側》 當光源22設置於稜鏡24第四面244外側時’光源22發射 之光束係穿過第四面244而進入稜鏡24内。此時，稜鏡24 的第一反射面242外側之空間可充份利用’可有效縮小指 表單编號A0101 第7頁/共13頁 M404439 紋影像擷取裝置2之體積。此外，當光源22設置於稜鏡24 之第一反射面242外側時，光源22發射之光束係穿透第一 反射面242而進入棱鏡24内。此時，稜鏡24之第四面244 外側之空間同樣可充份利用，也可效縮小指紋影像擷取 裝置2之體積。 [0024] 本創作指紋影像擷取裝置利用上述結構，可有效縮小指 紋影像擷取裝置的體積，而使指紋影像擷取裝置應用於 手機、相機…等電子產品裝置上。 [0025] 以上所述僅為舉例性，而非為限制性著。任何未脫離本 [0026] 創作之精神與範疇，而對其Jfelf看奪效I改或轡更，均 應包含於後附之申請專利 【圖式簡單說明】 圖1為一種傳統指紋影像擷取裝置的示#圖。 I ' 圖2為本創作指紋影像擷取裝置之一實施例之結構圖。 圖3為本創作指紋影像擷取緣@〖堇置之另一實施 例之示意圖。 Prc'od/*· ; i V >ν·ν·* · , If' . . . Surface 242 is used to reflect the light beam from the finger contact surface 241. [0015] The second reflecting surface 243 is connected to the finger contact surface 241 with a sandwich angle therebetween. The angle /3 is between 158 and 162, preferably 160. The second reflecting surface 242 is for reflecting the light beam from the first reflecting surface 242 to the image sensor 28. [0016] The fourth surface 244 is connected to the first reflecting surface 242 and the second reflecting surface 243. [0017] wherein, the first reflecting surface 241 reflects the light beam from the finger contact surface form number A0101, page 6 / 13 page 241 over the finger contact surface 241 due to the angle a, and enters the second reflecting surface 243, and the second The reflecting surface 243 causes all of the light beams reflected from the first reflecting surface 242 to enter the image sensor 28 because of the cold angle. [0018] Furthermore, the area of the finger contact surface 2 41 of the fingerprint image manipulation device 2 of the present embodiment is approximately equal to or equal to the range of the user's finger. Thus, the fingerprint image capturing device 2 can be reduced in volume. [0019] The lens group 26 of the fingerprint image capturing device 2 of the present embodiment is disposed between the fourth surface 234 of the 稜鏡 24 and the image sensor 28, which is selectively disposed. The lens set 26 is adapted to receive all of the light beams reflected from the second reflecting surface 243 and focus the light beams on the image sensor 28. This lens group 26 can be a wide-angle lens for receiving all of the light beams from the second reflecting surface 243. Furthermore, the lens group 26 may include at least two lenses 261, 262, the first lens 261 is a negative curvature and the second lens 262 is a positive curvature. The number of lens groups 26 is not limited to two, as long as the light beam from the second reflecting surface 243 can be focused on the image sensor 28. [0021] The form and function of the light source 22, the lens group 26, and the image sensor 28 are the same as those of the conventional fingerprint image capturing device, and will not be described in detail herein. 3 is a schematic diagram of another embodiment of the position where the light source 22 of the fingerprint image capturing device 2 is created. Referring to FIG. 3, the position of the light source 22 may be disposed outside the fourth surface 244 of the prism 24, or may be disposed outside the first reflecting surface 242 of the crucible 24" when the light source 22 is disposed on the fourth side of the crucible 24 When 244 is outside, the beam emitted by the source 22 passes through the fourth face 244 and enters the crucible 24. At this time, the space outside the first reflecting surface 242 of the crucible 24 can be fully utilized to effectively reduce the volume of the image capturing device 2 of the M404439 image forming device No. A0101. In addition, when the light source 22 is disposed outside the first reflecting surface 242 of the crucible 24, the light beam emitted by the light source 22 penetrates the first reflecting surface 242 and enters the prism 24. At this time, the space outside the fourth surface 244 of the crucible 24 can also be fully utilized, and the volume of the fingerprint image capturing device 2 can be reduced. [0024] The fingerprint image capturing device of the present invention can effectively reduce the volume of the fingerprint image capturing device by using the above structure, and the fingerprint image capturing device can be applied to electronic device devices such as mobile phones, cameras, and the like. [0025] The foregoing is illustrative only and not limiting. Anything that does not deviate from the spirit and scope of this [0026] creation, and its Jfelf's effect or modification, should be included in the attached patent application [Simple Description] Figure 1 is a traditional fingerprint image capture The #图 of the device. I' Fig. 2 is a structural diagram of an embodiment of a fingerprint image capturing device. FIG. 3 is a schematic diagram of another embodiment of the creation of a fingerprint image capture edge. Prc'od/
[0027] 【主要元件符號說明】 a 夾角 β 夾角 1、2 指紋影像擷取裝置 10 手指 12 光源 14 稜鏡 16 凸透鏡 表單編號Α0101 第8頁/共13頁 M404439 影像感測器 光源 棱鏡 手指接觸面 第一反射面 第二反射面 第四面 透鏡組 第一透鏡 第二透鏡 影像感測器 表單編號A0101 第9頁/共13頁[Description of main component symbols] a Angle β angle 1, 2 Fingerprint image capturing device 10 Finger 12 Light source 14 稜鏡 16 Convex lens form number Α 0101 Page 8 / Total 13 pages M404439 Image sensor light source prism finger contact surface First reflecting surface second reflecting surface fourth lens group first lens second lens image sensor form number A0101 Page 9 of 13