TW201824076A - Biometric identification apparatus - Google Patents

Biometric identification apparatus Download PDF

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TW201824076A
TW201824076A TW106102736A TW106102736A TW201824076A TW 201824076 A TW201824076 A TW 201824076A TW 106102736 A TW106102736 A TW 106102736A TW 106102736 A TW106102736 A TW 106102736A TW 201824076 A TW201824076 A TW 201824076A
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reflective layer
disposed
light
biometric device
outer sidewall
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TWI654569B (en
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王炯翰
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敦捷光電股份有限公司
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12Fingerprints or palmprints
    • G06V40/13Sensors therefor
    • G06V40/1324Sensors therefor by using geometrical optics, e.g. using prisms
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F18/00Pattern recognition

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  • Bioinformatics & Computational Biology (AREA)
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Abstract

A biometric identification apparatus including a light guide device, at least one reflective layer, a light source and an image capture device is provided. The light guide device includes a first surface, a second surface, an outer side wall, an inner side wall and a bottom surface. The first surface is disposed opposite the second surface. The outer side wall is connected to the first surface and included with respect to the first surface. The inner side wall is connected to the second surface and disposed opposite to the outer side wall. The bottom surface is disposed opposite to the first surface and connected between the outer side wall and the inner side wall. The at least one reflective layer is disposed on at least one of a part of the bottom surface, the outer side wall and the inner side wall. The light source disposed beside the bottom surface is used to emit a light beam. The light beam entering the light guide device from the bottom surface is reflected by the at least one reflective layer to be transmitted toward the first surface.

Description

生物辨識裝置Biometric device

本發明是有關於一種光電裝置,且特別是有關於一種生物辨識裝置。This invention relates to an optoelectronic device and, more particularly, to a biometric device.

生物辨識的種類包括臉部、聲音、虹膜、視網膜、靜脈和指紋辨識等。由於每個人的指紋都是獨一無二的,且指紋不易隨著年齡或身體健康狀况而變化,因此指紋辨識裝置已成爲目前最普及的一種生物辨識裝置。依照感測方式的不同,指紋辨識裝置可分爲光學式與電容式。電容式指紋辨識裝置組裝於電子産品(例如:手機、平板電腦)時,電容式指紋辨識裝置上方多設有透光元件(cover lens),而電容式指紋辨識裝置的感測效果會受到透光元件的影響。因此,光學式指紋辨識裝置也倍受重視。The types of biometrics include face, sound, iris, retina, veins, and fingerprint recognition. Since each person's fingerprint is unique and the fingerprint is not easy to change with age or physical health, the fingerprint identification device has become the most popular biometric device. According to the different sensing methods, the fingerprint identification device can be divided into optical and capacitive. When the capacitive fingerprint identification device is assembled in an electronic product (for example, a mobile phone or a tablet computer), a capacitive fingerprint identification device is provided with a cover lens, and the sensing effect of the capacitive fingerprint recognition device is transmitted. The impact of components. Therefore, optical fingerprint recognition devices have also received much attention.

光學式指紋辨識裝置包括光源、導光元件及影像擷取元件。光源用以發出光束,以照射按壓指紋辨識裝置的手指。手指的指紋是由多條不規則的凸紋與凹紋所組成。被凸紋與凹紋反射的光束會在影像擷取元件的接收面上形成爲明暗交錯的指紋影像。影像擷取元件可將指紋影像轉換爲對應的影像訊號,並將影像訊號輸入至處理單元。處理單元可利用演算法計算對應於指紋的影像訊號,以進行用戶的身份辨識。然而,在習知的指紋辨識裝置中,光源發出的光束耦入導光元件的效率不佳,造成指紋辨識裝置的光利用率低。The optical fingerprint identification device comprises a light source, a light guiding component and an image capturing component. The light source is used to emit a light beam to illuminate a finger pressing the fingerprint recognition device. Finger fingerprints are made up of a number of irregular ridges and indentations. The beams reflected by the ridges and the indentations form a fingerprint image that is interlaced on the receiving surface of the image capturing element. The image capturing component converts the fingerprint image into a corresponding image signal and inputs the image signal to the processing unit. The processing unit may use an algorithm to calculate an image signal corresponding to the fingerprint for identification of the user. However, in the conventional fingerprint identification device, the efficiency of the light beam emitted from the light source coupled to the light guiding element is poor, resulting in low light utilization efficiency of the fingerprint identification device.

本發明是提供一種生物辨識裝置。The present invention provides a biometric device.

根據本發明的實施例,生物辨識裝置包括導光元件、至少一反射層、光源及影像擷取元件。導光元件包括第一表面、第二表面、外側壁、內側壁及底面。第二表面相對於第一表面設置。外側壁與第一表面連接、向第二表面所在側延伸且相對於第一表面傾斜。內側壁與第二表面連接且相對於外側壁設置。底面相對於第一表面設置且連接於外側壁與內側壁之間。至少一反射層設置於部分底面、外側壁及內側壁的至少一個上。光源設置於導光元件的底面旁且用以發出光束。光束自底面進入導光元件後被至少一反射層反射,以向第一表面傳遞。影像擷取元件相對於導光元件的第二表面設置。According to an embodiment of the invention, the biometric device comprises a light guiding element, at least one reflective layer, a light source and an image capturing element. The light guiding element includes a first surface, a second surface, an outer sidewall, an inner sidewall, and a bottom surface. The second surface is disposed relative to the first surface. The outer sidewall is coupled to the first surface, extends toward a side of the second surface, and is inclined relative to the first surface. The inner sidewall is coupled to the second surface and disposed relative to the outer sidewall. The bottom surface is disposed relative to the first surface and is coupled between the outer sidewall and the inner sidewall. At least one reflective layer is disposed on at least one of the partial bottom surface, the outer sidewall, and the inner sidewall. The light source is disposed beside the bottom surface of the light guiding element and is used to emit a light beam. The light beam is reflected by the at least one reflective layer from the bottom surface into the light guiding element to be transmitted to the first surface. The image capture element is disposed relative to the second surface of the light guide element.

在根據本發明的實施例的生物辨識裝置中,內側壁相對於第一表面傾斜。In the biometric device according to an embodiment of the present invention, the inner side wall is inclined with respect to the first surface.

在根據本發明的實施例的生物辨識裝置中,外側壁與內側壁之間的距離隨著遠離第一表面而增加。In the biometric device according to an embodiment of the present invention, the distance between the outer side wall and the inner side wall increases as moving away from the first surface.

在根據本發明的實施例的生物辨識裝置中,至少一反射層包括第一反射層。第一反射層設置於部分底面上的第一反射層。光束穿過另一部分的底面後被外側壁及第一反射層反射,以向第一表面傳遞。In the biometric device according to an embodiment of the present invention, the at least one reflective layer includes a first reflective layer. The first reflective layer is disposed on the first reflective layer on a portion of the bottom surface. The light beam passes through the bottom surface of the other portion and is reflected by the outer sidewall and the first reflective layer to be transmitted to the first surface.

在根據本發明的實施例的生物辨識裝置中,至少一反射層包括第二反射層。第二反射層設置於外側壁上。光束穿過另一部分的底面後被第二反射層及部分底面反射,以向第一表面傳遞。In the biometric device according to an embodiment of the present invention, the at least one reflective layer includes a second reflective layer. The second reflective layer is disposed on the outer sidewall. The light beam passes through the bottom surface of the other portion and is reflected by the second reflective layer and a portion of the bottom surface to be transmitted to the first surface.

在根據本發明的實施例的生物辨識裝置中,至少一反射層包括第一反射層及第二反射層。第一反射層設置於部分的底面上。第二反射層設置於外側壁上。光束穿過另一部分的底面後被第一反射層及第二反射層反射,以向第一表面傳遞。In the biometric device according to an embodiment of the present invention, the at least one reflective layer includes a first reflective layer and a second reflective layer. The first reflective layer is disposed on a bottom surface of the portion. The second reflective layer is disposed on the outer sidewall. The light beam passes through the bottom surface of the other portion and is reflected by the first reflective layer and the second reflective layer to be transmitted to the first surface.

在根據本發明的實施例的生物辨識裝置中,至少一反射層包括第二反射層。第二反射層設置於外側壁上。光束穿過另一部分的底面後被第二反射層及內側壁反射,以向第一表面傳遞。In the biometric device according to an embodiment of the present invention, the at least one reflective layer includes a second reflective layer. The second reflective layer is disposed on the outer sidewall. The light beam passes through the bottom surface of the other portion and is reflected by the second reflective layer and the inner sidewall to be transmitted to the first surface.

在根據本發明的實施例的生物辨識裝置中,至少一反射層包括第三反射層。第三反射層設置於內側壁上。光束穿過另一部分的底面後被外側壁及第三反射層反射,以向第一表面傳遞。In the biometric device according to an embodiment of the present invention, the at least one reflective layer includes a third reflective layer. The third reflective layer is disposed on the inner sidewall. After passing through the bottom surface of the other portion, the light beam is reflected by the outer sidewall and the third reflective layer to be transmitted to the first surface.

在根據本發明的實施例的生物辨識裝置中,至少一反射層包括第二反射層及第三反射層。第二反射層設置於外側壁上。第三反射層設置於內側壁上。光束穿過另一部分的底面後被第二反射層及第三反射層反射,以向第一表面傳遞。In the biometric device according to an embodiment of the present invention, the at least one reflective layer includes a second reflective layer and a third reflective layer. The second reflective layer is disposed on the outer sidewall. The third reflective layer is disposed on the inner sidewall. The light beam passes through the bottom surface of the other portion and is reflected by the second reflective layer and the third reflective layer to be transmitted to the first surface.

在根據本發明的實施例的生物辨識裝置中,生物辨識裝置還包括準直元件。準直元件配置於導光元件的第二表面與影像擷取元件之間。In the biometric device according to an embodiment of the present invention, the biometric device further includes a collimating element. The collimating element is disposed between the second surface of the light guiding element and the image capturing element.

基於上述,本發明一實施例的生物辨識裝置包括導光元件、至少一反射層、光源及影像擷取元件。至少一反射層設置於導光元件的部分底面、外側壁及內側壁的至少一個上。藉由反射層的反射作用,光束耦入導光元件的工作區的效率可提升,進而增加生物辨識裝置的光利用效率。Based on the above, the biometric device according to an embodiment of the invention includes a light guiding component, at least one reflective layer, a light source, and an image capturing component. The at least one reflective layer is disposed on at least one of a portion of the bottom surface, the outer sidewall, and the inner sidewall of the light guiding element. By the reflection of the reflective layer, the efficiency of coupling the light beam into the working area of the light guiding element can be improved, thereby increasing the light utilization efficiency of the biometric device.

為讓本發明的上述特徵和優點能更明顯易懂,下文特舉實施例,並配合所附圖式作詳細說明如下。The above described features and advantages of the invention will be apparent from the following description.

現將詳細地參考本發明的示範性實施例,示範性實施例的實例說明於附圖中。只要有可能,相同元件符號在附圖和描述中用來表示相同或相似部分。Reference will now be made in detail to the exemplary embodiments embodiments Wherever possible, the same element symbols are used in the FIGS.

圖1爲本發明一實施例的生物辨識裝置的剖面示意圖。請參照圖1,生物辨識裝置100包括導光元件110、至少一反射層121、122、123、光源130及影像擷取元件140。導光元件110包括第一表面112、第二表面114、外側壁116、內側壁118及底面119a、119b。第二表面114相對於第一表面112設置。外側壁116與第一表面112連接且向第二表面114所在側延伸。外側壁116相對於第一表面112傾斜。內側壁118與第二表面114連接且相對於外側壁116設置。底面119a、119b 相對於第一表面112設置且連接於外側壁116與內側壁118之間。1 is a schematic cross-sectional view of a biometric device according to an embodiment of the present invention. Referring to FIG. 1 , the biometric device 100 includes a light guiding component 110 , at least one reflective layer 121 , 122 , 123 , a light source 130 , and an image capturing component 140 . The light guiding element 110 includes a first surface 112, a second surface 114, an outer sidewall 116, an inner sidewall 118, and a bottom surface 119a, 119b. The second surface 114 is disposed relative to the first surface 112. The outer sidewall 116 is coupled to the first surface 112 and extends toward the side of the second surface 114. The outer sidewall 116 is inclined relative to the first surface 112. The inner sidewall 118 is coupled to the second surface 114 and disposed relative to the outer sidewall 116. The bottom surfaces 119a, 119b are disposed relative to the first surface 112 and are coupled between the outer sidewall 116 and the inner sidewall 118.

在本實施例中,第二表面114與內側壁118可定義導光元件110的凹槽110a。內側壁118可相對於第一表面112傾斜。凹槽110a的內徑D可隨著遠離第一表面112而增加。在本實施例中,外側壁116與內側壁118的傾斜程度可不同。舉例而言,外側壁116的傾斜程度可較內側壁118的傾斜程度大。外側壁116與內側壁118之間的距離d可隨著遠離第一表面112而增加,其中距離d是指外側壁116與內側壁118在平行於第一表面112的方向上的距離。但本發明不以此爲限。在本實施例中,導光元件110的材質可爲玻璃、聚碳酸酯(PC)、聚甲基丙烯酸甲酯(PMMA)或其他適當材料。In the present embodiment, the second surface 114 and the inner sidewall 118 may define a recess 110a of the light guiding element 110. The inner sidewall 118 can be inclined relative to the first surface 112. The inner diameter D of the groove 110a may increase as it moves away from the first surface 112. In this embodiment, the degree of inclination of the outer sidewall 116 and the inner sidewall 118 may be different. For example, the outer sidewall 116 may be inclined to a greater extent than the inner sidewall 118. The distance d between the outer sidewall 116 and the inner sidewall 118 may increase as it moves away from the first surface 112, wherein the distance d refers to the distance of the outer sidewall 116 from the inner sidewall 118 in a direction parallel to the first surface 112. However, the invention is not limited thereto. In this embodiment, the material of the light guiding element 110 may be glass, polycarbonate (PC), polymethyl methacrylate (PMMA) or other suitable materials.

至少一反射層121、122、123設置於部分的底面119a、外側壁116及內側壁118的至少一個上。舉例而言,在本實施例中,至少一反射層121、122、123可包括第一反射層121、第二反射層122及第三反射層123。第一反射層121、第二反射層122及第三反射層123可分別設置於部分的底面119a、外側壁116及內側壁118上。然而,本發明不限於此,在另一實施例中,部分的底面119a上可設置第一反射層121,而外側壁116及內側壁118上可不設置第二反射層122及第三反射層123;在又一實施例中,部分的底面119a及外側壁116上可設置第一反射層121及第二反射層122,而內側壁118上可不設置第三反射層123;在再一實施例中,部分的底面119a及內側壁118上可設置第一反射層121及第三反射層123,而外側壁116上可不設置第二反射層122;在一實施例中,外側壁116及內側壁118上可設置第二反射層122及第三反射層123,而部分的底面119a上不可設置第一反射層121。在本實施例中,第一反射層121、第二反射層122和/或第三反射層123可爲白色反射層。然而,本發明不限於此,在其他實施例中,第一反射層121、第二反射層122和/或第三反射層123也可爲其他具有反射光束作用的反射層,例如:鏡面反射層等。At least one reflective layer 121, 122, 123 is disposed on at least one of the bottom surface 119a, the outer sidewall 116, and the inner sidewall 118 of the portion. For example, in this embodiment, the at least one reflective layer 121, 122, 123 may include a first reflective layer 121, a second reflective layer 122, and a third reflective layer 123. The first reflective layer 121, the second reflective layer 122, and the third reflective layer 123 may be disposed on a portion of the bottom surface 119a, the outer sidewall 116, and the inner sidewall 118, respectively. However, the present invention is not limited thereto. In another embodiment, the first reflective layer 121 may be disposed on a portion of the bottom surface 119a, and the second reflective layer 122 and the third reflective layer 123 may not be disposed on the outer sidewall 116 and the inner sidewall 118. In another embodiment, the first reflective layer 121 and the second reflective layer 122 may be disposed on the bottom surface 119a and the outer sidewall 116 of the portion, and the third reflective layer 123 may not be disposed on the inner sidewall 118; in still another embodiment The first reflective layer 121 and the third reflective layer 123 may be disposed on the bottom surface 119a and the inner sidewall 118, and the second reflective layer 122 may not be disposed on the outer sidewall 116. In an embodiment, the outer sidewall 116 and the inner sidewall 118 are disposed. The second reflective layer 122 and the third reflective layer 123 may be disposed thereon, and the first reflective layer 121 may not be disposed on a portion of the bottom surface 119a. In this embodiment, the first reflective layer 121, the second reflective layer 122, and/or the third reflective layer 123 may be white reflective layers. However, the present invention is not limited thereto. In other embodiments, the first reflective layer 121, the second reflective layer 122, and/or the third reflective layer 123 may also be other reflective layers having a reflected beam effect, such as a specular reflective layer. Wait.

光源130設置於導光元件110的底面119a、119b旁。舉例而言,在本實施例中,生物辨識裝置100可選擇性地包括支撑物192。支撑物192由底面119a、119b向光源130所在側延伸,以維持底面119a、119b與光源130之間的間隙。在本實施例中,支撑物192可與導光元件110、電路板160或光源130一體成型,或爲導光元件110、電路板160及光源130以外的構件,本發明幷不加以限制。生物辨識裝置100還可包括光學膠194。光學膠194可填入導光元件110的底面119a、119b與光源130之間的間隙,以减少光束L1、L2在入射導光元件110前的損失。需說明的是,上述的支撑物192、導光元件110的底面119a、119b及電路板160的相對關係僅是用以舉例說明光源130設置於底面119a、119b旁的一種方式。在其他實施例中,生物辨識裝置100也可不包括支撑物192,而用其他適當方式將光源130設置於導光元件110的底面119a、119b旁。舉例而言,在另一實施例中,生物辨識裝置100可不包括支撑物192,導光元件110的底面119a、119b可具有凹陷(未顯示),光源130可選擇性地配置於底面119a、119b的凹陷與電路板160圍出的空間中。在另一實施例中,生物辨識裝置100可不包括支撑物192,導光元件110的底面119a、119b可不具凹陷,電路板160可具有凹陷(未顯示),光源130可配置於電路板160的所述凹陷中,導光元件110的底面119a、119b 配置於電路板160的所述凹陷上方,而光束L1、L2也可自不具凹陷的底面119a、119b 進入導光元件110中。The light source 130 is disposed beside the bottom surfaces 119a, 119b of the light guiding element 110. For example, in the present embodiment, the biometric device 100 can optionally include a support 192. The support 192 extends from the bottom surface 119a, 119b toward the side where the light source 130 is located to maintain a gap between the bottom surfaces 119a, 119b and the light source 130. In this embodiment, the support 192 may be integrally formed with the light guiding element 110, the circuit board 160 or the light source 130, or be a member other than the light guiding element 110, the circuit board 160, and the light source 130, and the present invention is not limited thereto. The biometric device 100 can also include an optical glue 194. The optical glue 194 can fill the gap between the bottom surfaces 119a, 119b of the light guiding element 110 and the light source 130 to reduce the loss of the light beams L1, L2 before entering the light guiding element 110. It should be noted that the relative relationship between the support 192 and the bottom surfaces 119a and 119b of the light guiding element 110 and the circuit board 160 is only one example for illustrating that the light source 130 is disposed beside the bottom surfaces 119a and 119b. In other embodiments, the biometric device 100 may also include the support 192, and the light source 130 may be disposed beside the bottom surfaces 119a, 119b of the light guiding element 110 in other suitable manners. For example, in another embodiment, the biometric device 100 may not include the support 192. The bottom surface 119a, 119b of the light guiding element 110 may have a recess (not shown), and the light source 130 may be selectively disposed on the bottom surface 119a, 119b. The recess is in the space enclosed by the circuit board 160. In another embodiment, the biometric device 100 may not include the support 192, the bottom surface 119a, 119b of the light guiding element 110 may not have a recess, the circuit board 160 may have a recess (not shown), and the light source 130 may be disposed on the circuit board 160. In the recess, the bottom surfaces 119a, 119b of the light guiding element 110 are disposed above the recess of the circuit board 160, and the light beams L1, L2 can also enter the light guiding element 110 from the bottom surfaces 119a, 119b without recesses.

光源130用以發出光束L1、L2。在本實施例中,光束L1、L2例如是不可見光(例如:紅外光)。但本發明不限於此,在其他實施例中,光束L1、L2也可以是可見光(例如:紅光、藍光、綠光或其組合)或可見光與不可見光的組合。在本實施例中,光源130例如爲發光二極管。但本發明不限於此,在其他實施例中,光源130也可爲其他適當種類的發光元件。圖1示出二個光源130爲示例,且光源130設置在導光元件110的相對兩側。但本發明不限於此,在其他實施例中,光源130的數量也可爲單個且設置在導光元件110的單側,或者光源130的數量也可爲三個以上且設置在導光元件110的三個以上的側邊。Light source 130 is used to emit light beams L1, L2. In the present embodiment, the light beams L1, L2 are, for example, invisible light (for example, infrared light). However, the present invention is not limited thereto. In other embodiments, the light beams L1, L2 may also be visible light (for example, red light, blue light, green light, or a combination thereof) or a combination of visible light and invisible light. In the present embodiment, the light source 130 is, for example, a light emitting diode. However, the present invention is not limited thereto, and in other embodiments, the light source 130 may be other suitable types of light-emitting elements. FIG. 1 shows two light sources 130 as an example, and the light sources 130 are disposed on opposite sides of the light guiding element 110. However, the present invention is not limited thereto. In other embodiments, the number of the light sources 130 may be single and disposed on one side of the light guiding element 110, or the number of the light sources 130 may be three or more and disposed on the light guiding element 110. More than three sides.

影像擷取元件140相對於導光元件110的第二表面114設置。詳言之,在本實施例中,生物辨識裝置100還包括電路板160,影像擷取元件140可配置於電路板160上且與電路板160電性連接。更進一步地說,在本實施例中,影像擷取元件140可配置於導光元件110的凹槽110a中,而位於導光元件110的凹槽110a與電路板160所圍出的空間內,但本發明不以此爲限。影像擷取元件140具有數組排列的多個像素(pixel)區142,以接收被待辨識物10反射的光束L1、L2,進而取得待辨識物10的影像。在本實施例中,影像擷取元件140可爲電荷耦合元件(charge-coupled device;CCD)、互補金屬氧化物半導體(complementary metal oxide semiconductor;CMOS)或其他適當種類的圖像傳感器數組。The image capture component 140 is disposed relative to the second surface 114 of the light guide component 110. In detail, in the embodiment, the biometric device 100 further includes a circuit board 160. The image capturing component 140 can be disposed on the circuit board 160 and electrically connected to the circuit board 160. Further, in the embodiment, the image capturing component 140 can be disposed in the recess 110a of the light guiding component 110, and is located in the space surrounded by the recess 110a of the light guiding component 110 and the circuit board 160. However, the invention is not limited thereto. The image capturing component 140 has a plurality of pixel regions 142 arranged in an array to receive the light beams L1 and L2 reflected by the object to be recognized 10, thereby obtaining an image of the object 10 to be identified. In this embodiment, the image capturing component 140 can be a charge-coupled device (CCD), a complementary metal oxide semiconductor (CMOS), or other suitable type of image sensor array.

在本實施例中,生物辨識裝置100還包括透光元件170。透光元件170配置於導光元件110的第一表面112上。透光元件170具有背向導光元件110的按壓面172。按壓面172供待辨識物10按壓。在本實施例中,於正常的使用情况下,待辨識物10可爲生物的生物特徵,例如:指紋、靜脈、掌紋或上述至少二個的組合等。然而,本發明不限於此,於不正常的使用情况下,待辨識物10也可能是僞造物,例如:假手指。在本實施例中,生物辨識裝置100還包括光學膠180。透光元件170可透過光學膠180與導光元件110的第一表面112連接。在本實施例中,透光元件170、光學膠180及導光元件110的折射率可相同或相近,以减少光束L1、L2在透光元件170與光學膠180的交界及光學膠180與導光元件110的交界的反射,以提升生物辨識裝置100的光利用效率和/或取像品質。然而,本發明不限於此,在其他實施例中,透光元件170、光學膠180及導光元件110的折射率也可相异。In the present embodiment, the biometric device 100 further includes a light transmissive element 170. The light transmissive element 170 is disposed on the first surface 112 of the light guiding element 110. The light transmissive element 170 has a pressing surface 172 that is opposite to the light guiding element 110. The pressing surface 172 is pressed by the object to be recognized 10. In the present embodiment, under normal use, the object to be identified 10 may be a biological feature of a living being, such as a fingerprint, a vein, a palm print, or a combination of at least two of the above. However, the present invention is not limited thereto, and in the case of abnormal use, the object to be identified 10 may also be a forgery such as a fake finger. In the present embodiment, the biometric device 100 further includes an optical glue 180. The light transmissive element 170 is connectable to the first surface 112 of the light guiding element 110 through the optical adhesive 180. In this embodiment, the refractive indices of the light transmissive element 170, the optical adhesive 180, and the light guiding element 110 may be the same or similar to reduce the boundary between the light transmitting elements 170 and the optical adhesive 180 and the optical adhesive 180 and the guiding light. The reflection of the boundary of the light element 110 to enhance the light utilization efficiency and/or image quality of the biometric device 100. However, the present invention is not limited thereto. In other embodiments, the refractive indices of the light transmissive element 170, the optical adhesive 180, and the light guiding element 110 may also be different.

值得注意的是,光束L1、L2自部分底面119b進入導光元件110後會被至少一反射層121、122、123反射,以向第一表面112傳遞。藉此,光束L1、L2耦入導光元件110的工作區(例如:第一表面112與第二表面114之間的區域)的效率提升,進而增加生物辨識裝置100的光利用效率。It should be noted that the light beams L1, L2 are reflected by the at least one reflective layer 121, 122, 123 from the partial bottom surface 119b after entering the light guiding element 110 to be transmitted to the first surface 112. Thereby, the efficiency of the light beams L1, L2 coupled into the working area of the light guiding element 110 (for example, the area between the first surface 112 and the second surface 114) is increased, thereby increasing the light utilization efficiency of the biometric device 100.

舉例而言,在本實施例中,光束L1穿過部分的底面119b後可被外側壁116上的第二反射層122反射至部分底面119a上的第一反射層121,又第一反射層121反射光束L1,以使光束L1向第一表面112傳遞,進而爲生物辨識裝置100使用。然而,本發明不限於此,在另一實施例中,部分底面119a上可設置第一反射層121,而外側壁116上可不設置第二反射層122,此時,光束L1穿過部分的底面119b後可被外側壁116反射至第一反射層121,又第一反射層121反射光束L1,以使光束L1向第一表面112傳遞;在又一實施例中,部分底面119a上可不設置第一反射層121,而外側壁116上可設置第二反射層122,此時,光束L1穿過部分的底面119b後可被第二反射層122反射至部分的底面119a,又部分的底面119a反射光束L1,以使光束L1向第一表面112傳遞。For example, in this embodiment, the light beam L1 passes through the bottom surface 119b of the portion and can be reflected by the second reflective layer 122 on the outer sidewall 116 to the first reflective layer 121 on the partial bottom surface 119a, and the first reflective layer 121. The light beam L1 is reflected such that the light beam L1 is transmitted to the first surface 112 for use by the biometric device 100. However, the present invention is not limited thereto. In another embodiment, the first reflective layer 121 may be disposed on the partial bottom surface 119a, and the second reflective layer 122 may not be disposed on the outer sidewall 116. At this time, the light beam L1 passes through the bottom surface of the portion. After the 119b is reflected by the outer sidewall 116 to the first reflective layer 121, the first reflective layer 121 reflects the light beam L1 to transmit the light beam L1 to the first surface 112. In still another embodiment, the partial bottom surface 119a may not be provided. A reflective layer 121 is disposed, and the second reflective layer 122 is disposed on the outer sidewall 116. At this time, the light beam L1 passes through the bottom surface 119b of the portion and is reflected by the second reflective layer 122 to the bottom surface 119a of the portion, and the bottom surface 119a of the portion is reflected. Light beam L1 is passed to beam L1 toward first surface 112.

此外,在本實施例中,另一光束L2穿過部分的底面119b後會被第二反射層122的一處反射至第三反射層123,第三反射層123可將光束L2反射至第二反射層122的另一處,第二反射層122的另一處反射光束L2,以使光束L2向第一表面112傳遞,進而爲生物辨識裝置100使用。然而,本發明不限於此,在另一實施例中,外側壁116上可設置第二反射層122,而內側壁118上可不設置第三反射層123,此時,光束L2穿過部分的底面119b後可被第二反射層122的一處反射至內側壁118,內側壁118反射光束L2至第二反射層122的另一處,又第二反射層122的另一處反射光束L2,以使光束L2向第一表面112傳遞;在又一實施例中,外側壁116上可不設置第二反射層122,而內側壁118上可設置第三反射層123,此時,光束L2穿過部分的底面119b後可被外側壁116的一處反射至第三反射層123,又第三反射層123反射光束L2至外側壁116的另一處,又外側壁116的另一處反射光束L2,以使光束L2向第一表面112傳遞。In addition, in this embodiment, the other light beam L2 passes through a portion of the bottom surface 119b and is reflected by one portion of the second reflective layer 122 to the third reflective layer 123, and the third reflective layer 123 can reflect the light beam L2 to the second. At another point of the reflective layer 122, the other portion of the second reflective layer 122 reflects the light beam L2 to pass the light beam L2 toward the first surface 112 for use by the biometric device 100. However, the present invention is not limited thereto. In another embodiment, the second reflective layer 122 may be disposed on the outer sidewall 116, and the third reflective layer 123 may not be disposed on the inner sidewall 118. At this time, the light beam L2 passes through the bottom surface of the portion. 119b may be reflected by one of the second reflective layer 122 to the inner sidewall 118, the inner sidewall 118 reflects the light beam L2 to the other of the second reflective layer 122, and the other portion of the second reflective layer 122 reflects the light beam L2. The light beam L2 is transmitted to the first surface 112; in still another embodiment, the second reflective layer 122 may not be disposed on the outer sidewall 116, and the third reflective layer 123 may be disposed on the inner sidewall 118. At this time, the light beam L2 passes through the portion. The bottom surface 119b can be reflected by one side of the outer sidewall 116 to the third reflective layer 123, and the third reflective layer 123 reflects the light beam L2 to the other side of the outer sidewall 116, and the other side of the outer sidewall 116 reflects the light beam L2. The light beam L2 is transmitted to the first surface 112.

在本實施例中,生物辨識裝置100還可包括準直元件150。準直元件150配置於導光元件110的第二表面114與影像擷取元件140之間。在本實施例中,準直元件150可透過光學膠(未顯示)與影像擷取元件140連接,但本發明不以此爲限。值得注意的是,準直元件150具有多個透光區152。多個透光區152分別對應影像擷取元件140的多個像素區142。被待辨識物10的每一處反射的光束L1或L2可通過對應的一個透光區152傳遞至對應的像素區142,而不易傳遞至其他像素區142。藉此,生物辨識裝置100的取像品質能進一步地提升。但本發明不限於此,在其他實施例中,生物辨識裝置100也可選擇性地不包括準直元件150。In the present embodiment, the biometric device 100 can also include a collimating element 150. The collimating element 150 is disposed between the second surface 114 of the light guiding element 110 and the image capturing element 140. In the present embodiment, the collimating element 150 can be connected to the image capturing element 140 through an optical glue (not shown), but the invention is not limited thereto. It is noted that the collimating element 150 has a plurality of light transmissive regions 152. The plurality of light transmissive regions 152 respectively correspond to the plurality of pixel regions 142 of the image capturing component 140. The light beam L1 or L2 reflected by each of the objects to be identified 10 can be transmitted to the corresponding pixel region 142 through a corresponding one of the light transmitting regions 152, and is not easily transferred to the other pixel regions 142. Thereby, the image capturing quality of the biometric device 100 can be further improved. However, the present invention is not limited thereto, and in other embodiments, the biometric device 100 may optionally not include the collimating element 150.

綜上所述,本發明一實施例的生物辨識裝置包括導光元件、至少一反射層、光源及影像擷取元件。至少一反射層設置於導光元件的部分底面、外側壁及內側壁的至少一個上。藉由反射層的反射作用,光束耦入導光元件的工作區的效率可提升,進而增加生物辨識裝置的光利用效率。In summary, the biometric device according to an embodiment of the invention includes a light guiding component, at least one reflective layer, a light source, and an image capturing component. The at least one reflective layer is disposed on at least one of a portion of the bottom surface, the outer sidewall, and the inner sidewall of the light guiding element. By the reflection of the reflective layer, the efficiency of coupling the light beam into the working area of the light guiding element can be improved, thereby increasing the light utilization efficiency of the biometric device.

雖然本發明已以實施例揭露如上,然其並非用以限定本發明,任何所屬技術領域中具有通常知識者,在不脫離本發明的精神和範圍內,當可作些許的更動與潤飾,故本發明的保護範圍當視後附的申請專利範圍所界定者為準。Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

10‧‧‧待辨識物10‧‧‧To be identified

100‧‧‧生物ㄒ辨識裝置100‧‧‧Biometric identification device

110‧‧‧導光元件110‧‧‧Light guiding elements

110a‧‧‧凹槽110a‧‧‧ Groove

112‧‧‧第一表面112‧‧‧ first surface

114‧‧‧第二表面114‧‧‧ second surface

116‧‧‧外側壁116‧‧‧Outer side wall

118‧‧‧內側壁118‧‧‧ inner side wall

119a、119b‧‧‧底面119a, 119b‧‧‧ bottom

121‧‧‧第一反射層(反射層)121‧‧‧First reflective layer (reflective layer)

122‧‧‧第二反射層(反射層)122‧‧‧Second reflective layer (reflective layer)

123‧‧‧第三反射層(反射層)123‧‧‧ third reflective layer (reflective layer)

130‧‧‧光源130‧‧‧Light source

140‧‧‧影像擷取元件140‧‧‧Image capture component

142‧‧‧像素區142‧‧‧Pixel area

150‧‧‧準直元件150‧‧‧ collimating components

152‧‧‧透光區152‧‧‧Light transmission area

160‧‧‧電路板160‧‧‧ boards

170‧‧‧透光元件170‧‧‧Lighting components

172‧‧‧按壓面172‧‧‧ Pressing surface

180、194‧‧‧光學膠180,194‧‧‧Optical adhesive

192‧‧‧支撑物192‧‧‧Support

D‧‧‧內徑D‧‧‧Inner diameter

d‧‧‧距離D‧‧‧distance

L1、L2‧‧‧光束L1, L2‧‧‧ beams

圖1爲本發明一實施例的生物辨識裝置的剖面示意圖。1 is a schematic cross-sectional view of a biometric device according to an embodiment of the present invention.

Claims (10)

一種生物辨識裝置,包括: 導光元件,包括: 第一表面; 第二表面,相對於所述第一表面設置; 外側壁,與所述第一表面連接、向所述第二表面所在側延伸且相對於所述第一表面傾斜; 內側壁,與所述第二表面連接且相對於所述外側壁設置;以及 底面,相對於所述第一表面設置且連接於所述外側壁與所述內側壁之間; 至少一反射層,設置於部分的所述底面、所述外側壁及所述內側壁的至少一個上; 光源,設置於所述導光元件的所述底面旁且用以發出光束,其中所述光束自所述底面進入所述導光元件後被所述至少一反射層反射,以向所述第一表面傳遞;以及 影像擷取元件,相對於所述導光元件的所述第二表面設置。A biometric device comprising: a light guiding element comprising: a first surface; a second surface disposed relative to the first surface; an outer sidewall coupled to the first surface and extending to a side of the second surface And being inclined with respect to the first surface; an inner sidewall coupled to the second surface and disposed relative to the outer sidewall; and a bottom surface disposed relative to the first surface and coupled to the outer sidewall and the Between the inner side walls; at least one reflective layer disposed on at least one of the bottom surface, the outer side wall and the inner side wall; a light source disposed adjacent to the bottom surface of the light guiding element for emitting a light beam, wherein the light beam is reflected by the at least one reflective layer from the bottom surface into the light guiding element for transmission to the first surface; and the image capturing element is opposite to the light guiding element The second surface setting is described. 如申請專利範圍第1項所述的生物辨識裝置,其中所述內側壁相對於所述第一表面傾斜。The biometric device of claim 1, wherein the inner sidewall is inclined with respect to the first surface. 如申請專利範圍第2項所述的生物辨識裝置,其中所述外側壁與所述內側壁之間的距離隨著遠離所述第一表面而增加。The biometric device of claim 2, wherein a distance between the outer sidewall and the inner sidewall increases as moving away from the first surface. 如申請專利範圍第1項所述的生物辨識裝置,其中所述至少一反射層包括第一反射層,所述第一反射層設置於所述部分的所述底面上,其中所述光束穿過另一部分的所述底面後被所述外側壁及所述第一反射層反射,以向所述第一表面傳遞。The biometric device of claim 1, wherein the at least one reflective layer comprises a first reflective layer, the first reflective layer being disposed on the bottom surface of the portion, wherein the light beam passes through The other portion of the bottom surface is then reflected by the outer sidewall and the first reflective layer for delivery to the first surface. 如申請專利範圍第1項所述的生物辨識裝置,其中所述至少一反射層包括第二反射層,所述第二反射層設置於所述外側壁上,其中所述光束穿過另一部分的所述底面後被所述第二反射層及所述部分的底面反射,以向所述第一表面傳遞。The biometric device of claim 1, wherein the at least one reflective layer comprises a second reflective layer, and the second reflective layer is disposed on the outer sidewall, wherein the light beam passes through another portion The bottom surface is then reflected by the second reflective layer and the bottom surface of the portion for transmission to the first surface. 如申請專利範圍第1項所述的生物辨識裝置,其中所述至少一反射層包括第一反射層及第二反射層,所述第一反射層設置於所述部分的所述底面上,所述第二反射層設置於所述外側壁上,其中所述光束穿過另一部分的所述底面後被所述第一反射層及所述第二反射層反射,以向所述第一表面傳遞。The biometric device of claim 1, wherein the at least one reflective layer comprises a first reflective layer and a second reflective layer, the first reflective layer being disposed on the bottom surface of the portion, The second reflective layer is disposed on the outer sidewall, wherein the light beam passes through the bottom surface of another portion and is reflected by the first reflective layer and the second reflective layer to transmit to the first surface . 如申請專利範圍第1項所述的生物辨識裝置,其中所述至少一反射層包括第二反射層,所述第二反射層設置於所述外側壁上,其中所述光束穿過另一部分的所述底面後被所述第二反射層及所述內側壁反射,以向所述第一表面傳遞。The biometric device of claim 1, wherein the at least one reflective layer comprises a second reflective layer, and the second reflective layer is disposed on the outer sidewall, wherein the light beam passes through another portion The bottom surface is then reflected by the second reflective layer and the inner sidewall to be transferred to the first surface. 如申請專利範圍第1項所述的生物辨識裝置,其中所述至少一反射層包括第三反射層,所述第三反射層設置於所述內側壁上,其中所述光束穿過另一部分的所述底面後被所述外側壁及所述第三反射層反射,以向所述第一表面傳遞。The biometric device of claim 1, wherein the at least one reflective layer comprises a third reflective layer, the third reflective layer being disposed on the inner sidewall, wherein the light beam passes through another portion The bottom surface is then reflected by the outer sidewall and the third reflective layer to be transferred to the first surface. 如申請專利範圍第1項所述的生物辨識裝置,其中所述至少一反射層包括第二反射層及第三反射層,所述第二反射層設置於所述外側壁上,所述第三反射層設置於所述內側壁上,其中所述光束穿過另一部分的所述底面後被所述第二反射層及所述第三反射層反射,以向所述第一表面傳遞。The biometric device of claim 1, wherein the at least one reflective layer comprises a second reflective layer and a third reflective layer, the second reflective layer is disposed on the outer sidewall, the third A reflective layer is disposed on the inner sidewall, wherein the light beam passes through the bottom surface of another portion and is reflected by the second reflective layer and the third reflective layer to be transmitted to the first surface. 如申請專利範圍第1項所述的生物辨識裝置,還包括: 準直元件,配置於所述導光元件的所述第二表面與所述影像擷取元件之間。The biometric device of claim 1, further comprising: a collimating element disposed between the second surface of the light guiding element and the image capturing element.
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KR200462271Y1 (en) * 2010-10-28 2012-09-03 징이 테크놀러지 아이엔씨. Optical fingerprint recognition system
CN102563541B (en) * 2011-08-17 2015-09-16 友达光电股份有限公司 Light guide plate and backlight module
US9462150B2 (en) * 2012-12-06 2016-10-04 Mitsubishi Electric Corporation Image read-in device with fastener to fasten transparent member retaining lens array assembly and light shield to board
CN204463158U (en) 2015-01-29 2015-07-08 张明方 The fingerprint palm-print image capture device of honeycomb and terminal device
US9829614B2 (en) * 2015-02-02 2017-11-28 Synaptics Incorporated Optical sensor using collimator
US20160240575A1 (en) * 2015-02-13 2016-08-18 Novatek Microelectronics Corp. Optical device
CN105550664A (en) * 2016-01-08 2016-05-04 上海箩箕技术有限公司 Optical fingerprint sensor module
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