Diffuse light ring for reading encoded symbols
作者： Laurens Nunnink , Richard Reuter , Carl Gerst
DOI:
关键词: Electromagnetic spectrum 、 Ring (chemistry) 、 Diffuse reflection 、 Optoelectronics 、 Reading (computer) 、 Optics 、 Light-emitting diode 、 High angle 、 Physics
摘要: A scanning device includes a light ring that is constructed of emitting diodes are directed toward the center and emit diffuse over radiation spectrum having an angle greater than ninety degrees. The provides both low high light, therefore dark bright field illumination.
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