Color-coded character-recognition experiment with wavelength-triplexed, reflection-type holographic filters
- 1 May 1982
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 7 (5) , 230-232
- https://doi.org/10.1364/ol.7.000230
Abstract
Color-coded, simultaneous recognition of several characters is experimentally performed using wavelength-triplexed, reflection-type holographic filters made with the primary wavelengths, 632.8, 514.5, and 488.0 nm. Helpful data on the diffraction efficiency and the spectrally diffracted intensity of reflection-type holograms are presented.Keywords
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