SYSTEM AND METHOD FOR SELECTIVELY MARKING OBJECTS
First Claim
1. A method for selectively marking a surface, the method comprising:
- marking the surface with lines of a first material containing quantum dots having a first absorption characteristic and a first emission characteristic; and
selectively illuminating the surface with radiation consistent with the first absorption characteristic to cause the lines of the first material to display the first emission characteristic.
0 Assignments
0 Petitions
Accused Products
Abstract
A surface is selectively marked by using a coating containing quantum dots. When exposed to an energizing source, the quantum dots emit colored light to selectively mark the surface. In an embodiment, a green artificial turf field is marked with two sets of lines, white for football and yellow for soccer. The football lines are normally visible, but are also embedded with quantum dots that emit green light when energized. The soccer lines are normally invisible (clear), but emit yellow light when energized. The field can be used for football without energizing the quantum dots. To use the field for soccer, the field is exposed to a constant source of UVC energy. The quantum dots in the football lines emit green light when energized, causing them to become green, blending in with the normal green color of the artificial turf field. The quantum dots in the soccer lines emit yellow light when energized. Only the soccer lines are then visible, thus eliminating confusion for the players and officials.
-
Citations
20 Claims
-
1. A method for selectively marking a surface, the method comprising:
-
marking the surface with lines of a first material containing quantum dots having a first absorption characteristic and a first emission characteristic; and selectively illuminating the surface with radiation consistent with the first absorption characteristic to cause the lines of the first material to display the first emission characteristic. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method for selectively marking a surface, the method comprising:
-
marking the surface with a first coating containing quantum dots having a first absorption characteristic and a first emission characteristic; marking the surface with a second coating containing quantum dots having a second absorption characteristic and a second emission characteristic; and selectively illuminating the surface with radiation consistent with the first and second absorption characteristic to cause first coating to display the first emission characteristic and the second coating to display the second characteristic. - View Dependent Claims (10, 11, 12, 13, 14)
-
-
15. A system for selectively marking a surface, the method comprising:
-
a surface; a first coating on the surface, the first coating comprising quantum dots having a first absorption characteristic and a first emission characteristic; a second coating on the surface, the second coating comprising quantum dots having a second absorption characteristic and a second emission characteristic; and means for selectively illuminating the surface with radiation consistent with the first and second absorption characteristic to cause first coating to display the first emission characteristic and the second coating to display the second characteristic. - View Dependent Claims (16, 17, 18, 19, 20)
-
Specification