Method and apparatus for making optical tiles
A panel comprising a substrate having a top substrate surface and a bottom substrate surface. The substrate includes a plurality of tiles extending outwardly from the top substrate surface of substrate. The tiles having a top tile surface and a bottom tile surface. The tiles and the substrate are integral and formed of a single piece of material. Each tile is connected to the substrate at a connection area. Each connection area projects upwardly from the top substrate surface of the substrate and includes a bottom connection edge connected to the top substrate surface of the substrate at a first angle and a top connection edge connected to a bottom tile surface of one of the tiles at a second angle. The tiles form an optical image on the panel.
1. A panel comprising:
a substrate having a top substrate surface and a bottom substrate surface, the substrate including a plurality of tiles extending outwardly from the top substrate surface of the substrate, the tiles having a top tile surface and a bottom tile surface;
the tiles and the substrate being integral and formed of a single piece of material;
each tile being connected to the substrate at a connection area; and
each connection area including a plurality of substantially linear segments angularly offset from one another and projecting upwardly from the top substrate surface of the substrate, each segment including a bottom connection edge connected to the top substrate surface of the substrate at a first angle and a top connection edge connected to a bottom tile surface of one of the tiles at a second angle;
wherein the tiles form an optical image on the panel.
2. The panel of claim 1 , wherein:
the substrate includes a plurality of openings, each opening having a periphery;
each connection area is connected to the substrate within one of the openings at the periphery; and
at least two of the connection areas are connected to the openings at different points of the periphery of the openings such that at least two of the tiles extend from the substrate in different directions.
3. The panel of claim 2 , wherein:
each tile is substantially circular.
4. The panel of claim 1 , wherein:
each tile is substantially circular.
5. The panel of claim 1 , wherein:
the substrate and the tiles are formed of aluminum.
6. The panel of claim 1 , wherein:
the tiles are substantially planar.
7. The panel of claim 1 , wherein:
the first angle is substantially perpendicular.
8. A panel comprising:
a metal substrate having a top substrate surface and a bottom substrate surface, the substrate including a plurality of tiles extending outwardly from the top substrate surface of substrate, the tiles having a top tile surface and a bottom tile surface;
the tiles and the substrate being integral and formed of a single piece of metal;
each tile being connected to the substrate at a connection area;
each connection area projecting upwardly from the top substrate surface of the substrate and includes a bottom connection edge connected to the top substrate surface of the substrate and a top connection edge connected to a bottom tile surface of one of the tiles;
the substrate including a plurality of openings, each opening having a periphery;
each connection area being connected to the substrate within one of the openings at the periphery; and
at least two of the connection areas being connected to the openings at different points of the periphery of the openings such that at least two of the tiles extend from the substrate in different directions to allow the tiles to form an optical image;
wherein each connection area comprises a plurality of angularly offset linear connection segments extending upwardly from the top substrate surface, whereby the connections segments collectively resist bending of the respective tile toward or away from the substrate.
9. The panel of claim 8 , wherein:
each connection area projecting substantially perpendicularly from the top substrate surface of the substrate.