System and method of using fluorescent material to display information on a vehicle window
AssigneeDelphi Technologies, Inc.
InventorsDavid K. Lambert, Xinhua (Sam) He, Michel F. Sultan
Life of this patent
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Abstract
A system to selectively display a symbol at a location on a vehicle window. The system includes an arrangement of a fluorescent material at the location, wherein the fluorescent material: a) is sufficiently transparent in the absence of ultraviolet (UV) light, b) fluoresces when illuminated with UV light, c) and has a shape corresponding to the symbol, and a UV light source configured to illuminate the location with UV light to display the symbol. Such a system may use unfocused UV light sources to illuminate the symbol shaped fluorescent material as opposed to focused UV light sources such as UV lasers.
Claims17
A system to selectively display a symbol at a location on a vehicle window, said system comprising:
- an arrangement of a fluorescent material within the location, wherein the fluorescent material:
- a) is sufficiently transparent in the absence of ultraviolet (UV) light to not interfere with seeing through the vehicle window, b) fluoresces when illuminated with UV light, c) and has a shape configured to define the shape of the symbol;
- and
- a UV light source characterized as unfocused and configured to illuminate the location with uniform intensity UV light to display the symbol within the location.
A method of selectively displaying a symbol within a location on a vehicle window, said method comprising the steps of:
- providing a fluorescent material at the location, wherein the fluorescent material:
- a) is sufficiently transparent in the absence of ultraviolet (UV) light to not interfere with seeing through the vehicle window, b) fluoresces when illuminated with UV light, c) and has a shape configured to define the shape of the symbol;
- and
- illuminating the location with UV light characterized as unfocused and configured to illuminate the location with uniform intensity UV light to display the symbol within the location.
Dependencies are inferred from the claim text.