Open AccessDesign and fabrication of a fingerprint imager with compact LED illumination and compact imaging optics
Author(s) -
Jae Young Joo,
Do-Kyun Woo,
Soon Sub Park,
Sun-Kyu Lee
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.018932
Subject(s) - optics , fabrication , materials science , light emitting diode , stray light , optoelectronics , optical instrument , physics , medicine , alternative medicine , pathology
In this study, we presented a light-emitting diode-based (LED) miniaturized optical pattern imager for slim mobile phone application. To meet volume constraints, we designed a miniaturized compact illuminating and imaging optical component. The objective was to minimize optical loss using several nano- and micro-fabrication methods. After integration into a single optical body, the prototype imager-with dimensions of 6.8 × 2.2 × 2.5 mm and a weight of 0.4 g-demonstrated clear feasibility in measuring 2D micropatterns with widths of 50 and 10 μm.