公开(公告)号：US07403271B2

公开(公告)日：2008-07-22

申请号：US10591853

申请日：2004-09-14

申请人： Hyun Kim ,  Young Jin Seo ,  Jong Woo Ahn ,  Seung Min Lee ,  Sa Hyang Hong ,  Tae Hun Lee ,  Byung Kee Kwak

发明人： Hyun Kim ,  Young Jin Seo ,  Jong Woo Ahn ,  Seung Min Lee ,  Sa Hyang Hong ,  Tae Hun Lee ,  Byung Kee Kwak

IPC分类号： G06K9/74

CPC分类号： G06K9/00046

摘要： 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.

摘要翻译： 一种用于移动装置的光学指纹图像输入装置，包括：板状指纹接触构件; 用于校正失真的失真校正构件; 设置在指纹接触构件的两侧的光源，不同于液晶显示元件中的倾斜表面或背光源; 聚焦装置设置在所述失真校正构件的倾斜表面侧; 和图像传感器。 换句话说，具有各自设置的倾斜角度的指纹接触构件和失真校正构件被设置为辨别汗水，水或油，并且校正梯形失真，这是当使用薄指纹接触介质时发生的缺点， 并且形成由柱面透镜和球面透镜组成的透镜系统，用于调节图像的横向宽度与纵向宽度的比率。