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OwnerRussell C. Aubusson, Christina Thomas +1inventors
InventorsRussell C. Aubusson, Christina Thomas, William Henry
Estimating the term…
An apparatus for forming visible lines on a surface on a temporary basis comprises at least one laser which is directed at phosphors provided in or on the surface and means for controlling the laser to cause it to sweep the area on which the lines are to be marked. Optical deflectors are provided for guiding the laser beam. A first method of forming such lines comprises sweeping the surface incorporating the phosphors and on which the lines are to be marked with at least one laser beam. In a second method, the area is again swept by the at least one laser beam and, after the phosphors have been activated, each laser beam is deactivated and the phosphors are stimulated by flood radiation. Such phopsphorescence can then be quenched at a desired time.
An apparatus for forming visible lines of demarcation on a temporary basis on a surface, said surface including phosphor means wherein said phosphor means are disposed uniformly over all of said surface, said phosphor means being excitable by radiation to produce phosphorescence in the visible region of the electromagnetic spectrum, said apparatus comprising:
A method of forming visible lines of demarcation on a temporary basis on a surface comprising the steps of:
A method of forming visible lines of demarcation on a temporary basis on a surface comprising the steps of:
Dependencies are inferred from the claim text.