Apparatus for optical indication of values
AssigneeVDO Adolf Schindling AG
InventorGunter Bergk
Life of this patent
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Abstract
A periodically energized luminous element mounted on a body undergoing cyclic movement at a high speed producing periodic illumination at a frequency exceeding the fusion frequency of the human eye. The interval duration of said periodic illumination results in perception thereof as a permanent visual display disposed at a fixed location along the travel path of the body corresponding to a physical value to be represented.
Claims5
In a device for visually indicating physical values having a body undergoing cyclic movement at a uniform speed along a predetermined path, at least one luminous element mounted on the body, and a source of energy connected to the luminous element for periodic emission of illumination therefrom at predetermined locations along the path corresponding to the physical values as perceived by the human eye of an observer, the improvement comprising motor means connected to the body for imparting said movement thereto at a speed establishing said periodic illumination at a flash frequency exceeding the fusion frequency of the human eye, and flash control means operatively connected to the luminous element for limiting said periodic illumination to flash intervals of a duration enabling uninterrupted perception thereof as permanent displays at said predetermined locations.
Dependencies are inferred from the claim text.