An analog watch uses lighting which illuminates in the shape of a watch hand
to replace or augment physical hands of a watch. Each hand is a thin transparent glass
plate with a laser-etched three-dimensional image of the watch hand which diffuses light
from a light source in the watch to make to the hand visible.
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INC, HP, "LASER-ETCHED WATCH HANDS", Technical Disclosure Commons, (July 25, 2018)