Tiled interactive photonic screen
A tiled interactive screen comprises a mounting surface and tiles mounted on the mounting surface. Each tile comprises a tile substrate with photoluminescent marks disposed in a pattern on or in the tile substrate. Each photoluminescent mark is unique with respect to every other photoluminescent mark on any of the tiles, each photoluminescent mark comprises a pattern encoding information specifying the location of the photoluminescent mark on the tile, and each tile substrate is at least partially transparent to light absorbed by the photoluminescent marks and is at least partially transparent to light emitted by the photoluminescent marks. The photoluminescent marks respond to stimulating electromagnetic radiation by emitting electromagnetic radiation. A tiled photonic interactive system comprises a tiled photonic interactive screen and an optical stylus operable to emit stimulating radiation onto one or more photoluminescent marks and respond to electromagnetic radiation emitted by the stimulated photoluminescent marks.
1 . A tiled photonic interactive screen, comprising:
a mounting surface; and
tiles mounted on the mounting surface, each tile comprising a tile substrate with unique photoluminescent marks disposed in an array on the tile substrate,
wherein the unique photoluminescent marks comprise photoluminescent material disposed in a stack of layers, said stack of layers comprising successive alternate first and second layers having a same composition.
2 . The tiled photonic interactive screen of claim 1 , comprising information encoded in photoluminescent marks on a tile incorporating an identification of the tile or the location of the tile with respect to the tiles mounted on the mounting surface.
3 . The tiled photonic interactive screen of claim 1 , wherein the tile substrate comprises two or more layers.
4 . The tiled photonic interactive screen of claim 3 , wherein the photoluminescent marks are disposed between the tile substrate and the mounting surface or between two layers of the two or more layers.
5 . The tiled photonic interactive screen of claim 3 , wherein the two or more layers are adhered to each other or to the mounting substrate with an index-matched optically clear adhesive.
6 . The tiled photonic interactive screen of claim 1 , wherein the tile substrates are adhered together with a light-absorbing adhesive.
7 . The tiled photonic interactive screen of claim 1 , wherein the mounting surface is a tiled mounting surface comprising mounting tiles, and (i) one tile is mounted on each mounting tile, (ii) multiple tiles are mounted on each mounting tile, or (iii) a tile is mounted on multiple mounting tiles.
8 . The tiled photonic interactive screen of claim 1 , wherein the stack of layers is treated in a pattern to provide non-photoluminescent portions of the stack.
9 . The tiled photonic interactive screen of claim 1 , wherein the successive alternate first and second layers generate photoluminescent structures at the interface of said first layers and said second layers.
10 . A method of making a tiled photonic interactive screen, comprising:
providing a tiled substrate;
disposing a photoluminescent layer comprising quantum nano-structures on the tiled substrate;
masking the photoluminescent layer to form masked portions and unmasked portions;
deactivating unmasked portions of the photoluminescent layer; and
removing the mask.
11 . The method of claim 10 , wherein deactivating unmasked portions of the photoluminescent layer comprises exposing the unmasked portions to energetic particles.
12 . The method of claim 10 , wherein deactivating unmasked portions of the photoluminescent layer comprises exposing etching the unmasked portions to expose corresponding unmasked portions of the tile substrate.
13 . The method of claim 12 , comprising planarizing the photoluminescent layer.