Invention Grant
- Patent Title: Optical finger print input device for mobile apparatus
- Patent Title (中): 手指打印输入装置
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Application No.: US10591853Application Date: 2004-09-14
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Publication No.: US07403271B2Publication Date: 2008-07-22
- Inventor: Hyun Kim , Young Jin Seo , Jong Woo Ahn , Seung Min Lee , Sa Hyang Hong , Tae Hun Lee , Byung Kee Kwak
- Applicant: Hyun Kim , Young Jin Seo , Jong Woo Ahn , Seung Min Lee , Sa Hyang Hong , Tae Hun Lee , Byung Kee Kwak
- Applicant Address: KR Seoul
- Assignee: Secutronix Inc.
- Current Assignee: Secutronix Inc.
- Current Assignee Address: KR Seoul
- Agency: Renner, Otto, Boisselle & Sklar
- Agent John W. Renner
- Priority: KR10-2004-0016187 20040310
- International Application: PCT/KR2004/002327 WO 20040914
- International Announcement: WO2005/086077 WO 20050915
- Main IPC: G06K9/74
- IPC: G06K9/74

Abstract:
An optical fingerprint image input device for a mobile apparatus includes: a plate-shaped fingerprint contact member; a distortion correcting member for correcting distortions; light sources disposed at both sides of the fingerprint contact member, other than an inclined surface or a back light source in a liquid crystal display element; focusing means disposed at an inclined surface side of the distortion correcting member; and an image sensor. In other words, the fingerprint contact member and the distortion correcting member having respective set-up inclined angles are disposed to discern sweat, water or oil and to correct a trapezoidal distortion which is a disadvantage that occurs when a thin fingerprint contact medium is used, and to form a lens system comprised of a cylindrical lens and a spherical lens for adjustment of a ratio of transversal to longitudinal widths of an image.
Public/Granted literature
- US20070189588A1 Optical finger print input device for mobile apparatus Public/Granted day:2007-08-16
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