WO2013170665A1 - Optical fingerprint prism - Google Patents

Optical fingerprint prism Download PDF

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Publication number
WO2013170665A1
WO2013170665A1 PCT/CN2013/073301 CN2013073301W WO2013170665A1 WO 2013170665 A1 WO2013170665 A1 WO 2013170665A1 CN 2013073301 W CN2013073301 W CN 2013073301W WO 2013170665 A1 WO2013170665 A1 WO 2013170665A1
Authority
WO
WIPO (PCT)
Prior art keywords
fingerprint
fingerprint collecting
groove
prism
optical fingerprint
Prior art date
Application number
PCT/CN2013/073301
Other languages
French (fr)
Chinese (zh)
Inventor
闵瑜
Original Assignee
Min Yu
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Min Yu filed Critical Min Yu
Publication of WO2013170665A1 publication Critical patent/WO2013170665A1/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms

Definitions

  • the utility model belongs to the field of optical technology, and in particular relates to a fingerprint recognition optical system applied to fingerprint image capturing.
  • the optical fingerprint collecting instrument in the prior art mostly adopts a method of adding an optical component to achieve a better image capturing effect, and the structure thereof is relatively complicated and large in volume.
  • the requirements for fingerprint products are getting higher and higher.
  • Some light and compact products are more and more popular, and are more widely used in various industries, such as fingerprint door locks, fingerprint access control systems, and e-commerce. Bank savings, social insurance, etc.
  • the purpose of the utility model is to provide a novel optical fingerprint prism, which has the characteristics of small volume, simple structure, convenient use and low production cost.
  • An optical fingerprint prism adopts a solid structure, and its surface is composed of a light shielding surface 1, a fingerprint collection surface 2, an exit surface 3, and a rear plane 4; the angle between the fingerprint collection surface 2 and the light shielding surface 1 is 55°, and the fingerprint The angle between the collecting surface 2 and the exit surface 3 is 67 ° ⁇ 2.5 ° ;
  • the CD end face on the fingerprint collection surface 2 is the finger placement position, and the AB end face on the light shielding surface 1 is coated with a black matt paint.
  • the rear plane 4 has a first recess 41 therein.
  • the fingerprint collecting surface 2 has a second groove 21, and the CD end surface on the fingerprint collecting surface 2 protrudes from the second groove 21.
  • Figure 1 is a front view of the utility model
  • Figure 2 is a left side view of Figure 1 of the present invention.
  • Figure 3 is a plan view of Figure 1 of the present invention.
  • Figure 4 is a light path diagram of the present invention.

Abstract

An optical fingerprint prism is of a solid structure and has surfaces comprising a shading surface (1), a fingerprint collecting surface (2), an emitting surface (3) and a rear flat surface (4). The angle formed by the fingerprint collecting surface (2) and the shading surface (1) is 55°. The angle formed by the fingerprint collecting surface (2) and the emitting surface (3) is 67±2.5°. A CD end surface on the fingerprint collecting surface (2) is where a finger is placed. An AB end surface on the shading surface (1) is coated with black matt paint. The rear flat surface (4) is provided with a first groove (41). The fingerprint collecting surface (2) is provided with a second groove (21), and the CD end surface on the fingerprint collecting surface (2) protrudes out of the second groove (21).

Description

一种光学指纹棱镜  Optical fingerprint prism 技术领域Technical field
本实用新型属于光学技术领域，特别涉及一种应用于指纹取像的指纹识别光学系统。  The utility model belongs to the field of optical technology, and in particular relates to a fingerprint recognition optical system applied to fingerprint image capturing.
背景技术Background technique
现有技术中的光学指纹采集仪多采用增加光学元件的方法以达到更好的取像效果，其结构比较复杂，体积较大。随着社会的发展，对指纹产品的要求也越来越高，一些轻便、小巧的产品越来越受青睐，被更加广泛用于各行各业，如指纹门锁、指纹门禁控制系统、电子商务、银行储蓄、社会保险等。 The optical fingerprint collecting instrument in the prior art mostly adopts a method of adding an optical component to achieve a better image capturing effect, and the structure thereof is relatively complicated and large in volume. With the development of society, the requirements for fingerprint products are getting higher and higher. Some light and compact products are more and more popular, and are more widely used in various industries, such as fingerprint door locks, fingerprint access control systems, and e-commerce. Bank savings, social insurance, etc.
技术问题technical problem
技术解决方案Technical solution
本实用新型的目的是提供一种新型的光学指纹棱镜，具有体积小、结构简单、使用方便、生产成本低等特点。 The purpose of the utility model is to provide a novel optical fingerprint prism, which has the characteristics of small volume, simple structure, convenient use and low production cost.
为了达到上述目的，本实用新型的技术方案如下： In order to achieve the above object, the technical solution of the present invention is as follows:
一种光学指纹棱镜，采用实体结构，其表面由遮光面1、指纹采集面2、出射面3、后平面4组成；所述指纹采集面2与遮光面1组成的夹角为55°，指纹采集面2与出射面3组成的夹角为 67 ° ±2.5 ° ； 所述指纹采集面2上的 CD 端面为手指放置位置，遮光面1上的AB端面涂有黑色消光漆。 An optical fingerprint prism adopts a solid structure, and its surface is composed of a light shielding surface 1, a fingerprint collection surface 2, an exit surface 3, and a rear plane 4; the angle between the fingerprint collection surface 2 and the light shielding surface 1 is 55°, and the fingerprint The angle between the collecting surface 2 and the exit surface 3 is 67 ° ±2.5 ° ; The CD end face on the fingerprint collection surface 2 is the finger placement position, and the AB end face on the light shielding surface 1 is coated with a black matt paint.
所述后平面4上有第一凹槽41。 The rear plane 4 has a first recess 41 therein.
所述指纹采集面2上有第二凹槽21，指纹采集面2上的CD端面凸出第二凹槽21。 The fingerprint collecting surface 2 has a second groove 21, and the CD end surface on the fingerprint collecting surface 2 protrudes from the second groove 21.
有益效果Beneficial effect
附图说明DRAWINGS
图1为本实用新型的主视图； Figure 1 is a front view of the utility model;
图2为本实用新型图1的左视图； Figure 2 is a left side view of Figure 1 of the present invention;
图3为本实用新型图1的俯视图； Figure 3 is a plan view of Figure 1 of the present invention;
图4为本实用新型的光路图。 Figure 4 is a light path diagram of the present invention.
本发明的最佳实施方式BEST MODE FOR CARRYING OUT THE INVENTION
本发明的实施方式Embodiments of the invention
工业实用性Industrial applicability
序列表自由内容Sequence table free content

Claims (1)

  1. 1 、一种光学指纹棱镜，其特征在于：采用实体结构，其表面由遮光面（1）、指纹采集面（2）、出射面（3）、后平面（4）组成；所述指纹采集面（2）与遮光面（1） 组成的夹角为 55 °，指纹采集面（2）与出射面（3）组成的夹角为 67 ° ±2.5 ° ； 所述指纹采集面（2）上的CD端面为手指放置位置，遮光面（1）上的AB端面涂有黑色消光漆。1 An optical fingerprint prism characterized by adopting a solid structure, the surface of which is composed of a light shielding surface (1), a fingerprint collection surface (2), an exit surface (3), and a rear plane (4); the fingerprint collection surface ( 2) with blackout surface (1) The angle of the composition is 55 °, and the angle between the fingerprint collection surface (2) and the exit surface (3) is 67 ° ± 2.5 °; The CD end face on the fingerprint collection surface (2) is a finger placement position, and the AB end face on the light shielding surface (1) is coated with a black matt paint.
    2 、根据权利要求1所述的一种光学指纹棱镜，其特征在于：所述后平面（4）上有第一凹槽（41）。2. An optical fingerprint prism according to claim 1, characterized in that the rear plane (4) has a first recess (41).
    3 、根据权利要求1所述的一种光学指纹棱镜，其特征在于：所述指纹采集面（2）上有第二凹槽（21），指纹采集面（2）上的CD端面凸出第二凹槽（21）。3 The optical fingerprint prism according to claim 1, wherein the fingerprint collecting surface (2) has a second groove (21), and the CD end surface on the fingerprint collecting surface (2) protrudes second. Groove (21).
PCT/CN2013/073301 2012-05-17 2013-03-28 Optical fingerprint prism WO2013170665A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201220264667.9 2012-05-17
CN2012202646679U CN202584161U (en) 2012-05-17 2012-05-17 Optical fingerprint prism

Publications (1)

Publication Number Publication Date
WO2013170665A1 true WO2013170665A1 (en) 2013-11-21

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Application Number Title Priority Date Filing Date
PCT/CN2013/073301 WO2013170665A1 (en) 2012-05-17 2013-03-28 Optical fingerprint prism

Country Status (2)

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CN (1) CN202584161U (en)
WO (1) WO2013170665A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202584161U (en) * 2012-05-17 2012-12-05 闵瑜 Optical fingerprint prism
CN106203407A (en) * 2016-08-31 2016-12-07 长春鸿达光电子与生物统计识别技术有限公司 One has environment resistant light interference triangular prism and fingerprint collecting equipment

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5233404A (en) * 1989-09-28 1993-08-03 Oscan Electro Optics Inc. Optical scanning and recording apparatus for fingerprints
CN201000629Y (en) * 2007-01-19 2008-01-02 闵瑜 Fingerprint identification device
US20080298650A1 (en) * 2007-06-04 2008-12-04 Dong Hyuk Jang Optical finger print acquisition apparatus using a prism
CN201984500U (en) * 2011-03-23 2011-09-21 成都方程式电子有限公司 Dark background optical fingerprint sensor
CN102436579A (en) * 2011-03-31 2012-05-02 车全钟 High-definition infrared fingerprint acquisition device
CN202584161U (en) * 2012-05-17 2012-12-05 闵瑜 Optical fingerprint prism

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5233404A (en) * 1989-09-28 1993-08-03 Oscan Electro Optics Inc. Optical scanning and recording apparatus for fingerprints
CN201000629Y (en) * 2007-01-19 2008-01-02 闵瑜 Fingerprint identification device
US20080298650A1 (en) * 2007-06-04 2008-12-04 Dong Hyuk Jang Optical finger print acquisition apparatus using a prism
CN201984500U (en) * 2011-03-23 2011-09-21 成都方程式电子有限公司 Dark background optical fingerprint sensor
CN102436579A (en) * 2011-03-31 2012-05-02 车全钟 High-definition infrared fingerprint acquisition device
CN202584161U (en) * 2012-05-17 2012-12-05 闵瑜 Optical fingerprint prism

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