Optical Design for Fingerprint Identification with Asymmetrical Aspheric Lens

摘要：

The optical design of optical prism with aspheric lens for fingerprint identification is researched. We propose a new structure for optical prism of fingerprint identification, which has an asymmetrical aspheric lens on the output plane. It is numerically shown under point approximate model that the optical properties of such prism are better than one of optical prism with aspheric lens. When the fingerprint range is 16 √2 mm, the results show that the image contrast of our proposed prism is above 0.5 and the minimum image contrast for optical prism with aspheric lens is only 0.2.

关键词： Aspheric Lens Fingerprint Identification Asymmetrical Aspheric Lens Point Approximate Model Image Contrast

作者: Chi-Feng Chen Han-Chung Hsu Hsiao-Fang Lin Lea-Ming Lu James T. Wang

作者单位: Department of Mechanical Engineering/Institute of Opto-Mechatronics Engineering, National Central Un Institute of Opto-Mechatronics Engineering, National Central University. Jhongli, Taiwan, China Department of Mechanical Engineering, National Central University. Jhongli, Taiwan, China Pou Yuen Technology, 3C Product, Pou Chen Group,Chang Hwa, Taiwan, China

会议类型: 国际会议

会议名称: 2007亚洲显示国际会议（AD07）

会议地点: 上海

会议语种:英文

页码: 1886-1891

在线出版日期: 2007-03-12（万方平台首次上网日期，不代表论文的发表时间）