Title :
Invisible fluorescent code reader
Author :
Le, Nghia T. ; Bordoloi, Kiron C.
Author_Institution :
Dept. of Electr. Eng., Louisville Univ., KY, USA
Abstract :
An invisible fluorescent code reader which functions as an identification detector and is designed primarily for security purposes is discussed. The identification source is a fluorescent code that cannot be seen in visible light of the spectrum from approximately 400 nm to 800 nm in wavelength. However, this code becomes visible when it is exposed to ultraviolet radiation. The code is then detected and processed, and proper outputs are produced
Keywords :
mark scanning equipment; security of data; identification detector; invisible fluorescent code reader; security; ultraviolet radiation; Circuits; Fluorescence; Infrared detectors; Lenses; Light sources; Optical design; Optical modulation; Photodiodes; Ultraviolet sources; Voltage;
Conference_Titel :
Southeastcon '88., IEEE Conference Proceedings
Conference_Location :
Knoxville, TN
DOI :
10.1109/SECON.1988.194889
