Invention Application
WO8805157A3 3-D HOLOGRAPHIC ELECTROMECHANICAL METER 审中-公开
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3-D HOLOGRAPHIC ELECTROMECHANICAL METER
Abstract:
A 3-D holographic meter having a first fixed hologram (19) for creating a meter dial face virtual image, a second rotatable hologram (21) for creating a rotating pointer on the dial face, a shaft (23) for rotating the rotatable hologram in response to a variation in a measured parameter and an illumination source (27) for the fixed and rotatable holograms.
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