JP3782420B2 - 光学式の指紋取得装置 - Google Patents
光学式の指紋取得装置 Download PDFInfo
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- JP3782420B2 JP3782420B2 JP2003529397A JP2003529397A JP3782420B2 JP 3782420 B2 JP3782420 B2 JP 3782420B2 JP 2003529397 A JP2003529397 A JP 2003529397A JP 2003529397 A JP2003529397 A JP 2003529397A JP 3782420 B2 JP3782420 B2 JP 3782420B2
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- 230000003287 optical effect Effects 0.000 title claims description 24
- 238000000034 method Methods 0.000 description 6
- 238000003702 image correction Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6813—Specially adapted to be attached to a specific body part
- A61B5/6825—Hand
- A61B5/6826—Finger
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Optics & Photonics (AREA)
- Human Computer Interaction (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Pathology (AREA)
- Molecular Biology (AREA)
- Biophysics (AREA)
- Dentistry (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Image Input (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Description
反射鏡は前記のプリズムの一次出射/再入射面の外部に燐接して設置されるが、 一次出射/再入射面から出射される光を反射させて、また一次出射/再入射面に再入射させ、光の経路の差を補正する機能をする。
(最終出射面の長さ)<(一次出射/再入射面の長さ)<(指紋の接触面の長さ)<(全反射面の長さ)
(最終出射面(24)の長さ)<(一次出射/再入射面(23)の長さ)<(指紋接触面(21)の長さ)<(全反射面(22)の長さ)
上の関係は全反射(22)が指紋接触面(21)を基準として、角度θ程、斜めに形成されることによる当然の結果で、本発明によるプリズムの形象を表現している関係式だ。
Claims (4)
- 指紋から散乱された光により、指紋映像を取得する指紋取得装置で、
指紋を入力しようとする者の指紋に接触する指紋接触面; この指紋接触面にθの角度を持って対向する面で、指紋接触面に接触された指紋で散乱された光が内部に全反射される全反射面; 前記の指紋接触面と全反射面を繋げる面で、指紋接触面とはφの角度になり、前記の全反射面で全反射された光が一次的に出射され、外部から再入射される一次出射/再入射面; 前記の一次出射/再入射面に対向する面として、前記の一次出射/再入射面に再入射された光を、外部に最終出射する最終出射面を含むプリズムと、
前記のプリズムの一次出射/再入射面の外部に、δの角度で隣接設置され、一次出射/再入射面から出射される光を反射させ、また一次出射/再入射面で再入射させる反射鏡を含めて構成される光学式の指紋取得装置。 - 請求項1で、前記のプリズムの各面は下の関係を持つことを特徴とする光学式の式指紋取得装置。
(最終出射面の長さ)<(一次出射/再入射面の長さ)<(指紋接触面の長さ)<(全反射面の長さ) - 請求項1または2で、
角度θは指紋接触面の有效な指紋接触領域から任意の角に散乱される光を、一次出射/再入射面を向けて全反射することができる角度に設定して、
角度δは一次出射/再入射面で、一次に出射された光が、最終の出射面の中央部に向かって進行することができる角度に設定し、
角度φは一次出射/再入射面で、一次に出射された光が、反射鏡で反射されて出射された光の主な光軸が、最終出射面に垂直に進行するよう屈折させる角度に設定することを、特徴にする光学式の指紋取得装置。 - 請求項1または2で、前記のプリズムの一次出射/再入射面と反射鏡によってできる隙間の空間に、プリズムの屈折率より低い屈折率を持つ媒質を満たせることを、特徴とする光学式の指紋取得装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2001-0057070A KR100432490B1 (ko) | 2001-09-17 | 2001-09-17 | 광학식 지문취득 장치 |
PCT/KR2002/001719 WO2003025844A1 (en) | 2001-09-17 | 2002-09-13 | Optical fingerprint acquisition apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005503225A JP2005503225A (ja) | 2005-02-03 |
JP3782420B2 true JP3782420B2 (ja) | 2006-06-07 |
Family
ID=19714326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003529397A Expired - Fee Related JP3782420B2 (ja) | 2001-09-17 | 2002-09-13 | 光学式の指紋取得装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US6826000B2 (ja) |
JP (1) | JP3782420B2 (ja) |
KR (1) | KR100432490B1 (ja) |
CN (1) | CN1258736C (ja) |
WO (1) | WO2003025844A1 (ja) |
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-
2001
- 2001-09-17 KR KR10-2001-0057070A patent/KR100432490B1/ko active IP Right Grant
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2002
- 2002-05-17 US US10/150,419 patent/US6826000B2/en not_active Expired - Fee Related
- 2002-09-13 CN CNB028181514A patent/CN1258736C/zh not_active Expired - Fee Related
- 2002-09-13 WO PCT/KR2002/001719 patent/WO2003025844A1/en active Application Filing
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WO2003025844A1 (en) | 2003-03-27 |
US6826000B2 (en) | 2004-11-30 |
KR100432490B1 (ko) | 2004-05-22 |
CN1258736C (zh) | 2006-06-07 |
US20030053228A1 (en) | 2003-03-20 |
CN1555542A (zh) | 2004-12-15 |
KR20030024090A (ko) | 2003-03-26 |
JP2005503225A (ja) | 2005-02-03 |
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