Title :
Fiber-optic color sensor
Author :
Leung, Frankie Y C ; Demokan, M.S.
Author_Institution :
Dept. of Electr. Eng., Hong Kong Polytech., Hong Kong
fDate :
31 Oct-3 Nov 1994
Abstract :
A novel extrinsic fiber-optic color-recognition sensor which incorporates three lasers as the light sources, PIN diodes in the receiver and multimode step-index optical fibers as the transmission media is reported. The sensing principle is based on the wavelength dependence of diffuse reflection. The sensor achieves an accuracy of 100% for painted objects, over 73% for clothes and 74% for plastics in recognizing 62 defined colours. It is inherently compact and suitable for remote sensing, has high speed and can function in the presence of normal background illumination
Keywords :
colorimetry; PIN diode receiver; clothes; compact device; diffuse reflection; fiber-optic color-recognition sensor; laser light sources; multimode step-index optical fibers; painted objects; plastics; remote sensing; Fiber lasers; Lenses; Light sources; Neural networks; Optical fiber couplers; Optical fiber sensors; Optical fiber testing; Optical fibers; Optical receivers; Optical reflection;
Conference_Titel :
Lasers and Electro-Optics Society Annual Meeting, 1994. LEOS '94 Conference Proceedings. IEEE
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-1470-0
DOI :
10.1109/LEOS.1994.586933
