OPTICAL TOUCH PANEL
First Claim
Patent Images
1. An optical touch panel comprising:
- a coordinate input region;
a light-emitting element;
a light-receiving element;
a light-emitting sided-optical waveguide connected to the light-emitting element and having an output end; and
a light-receiving sided-optical waveguide connected to the light-receiving element and having an input end,wherein the output end of the light-emitting sided-optical waveguide and the input end of the light-receiving sided-optical waveguide are located on opposite sides of the coordinate input region,wherein the light-emitting sided-optical waveguide comprises a light-emitting sided-cladding layer; and
a light-emitting sided-core embedded in the light-emitting sided-cladding layer, the light-receiving sided-optical waveguide comprises a light-receiving sided-cladding layer; and
a light-receiving sided core embedded in the light-receiving sided-cladding layer, the light-emitting sided-cladding layer has a lower refractive index than the light-emitting sided-core and the light-receiving sided-cladding layer has a lower refractive index than the light-receiving sided-core, and the center height of the light-emitting sided-core is lower than that of the light-emitting sided-optical waveguide and the center height of the light-receiving sided-core is lower than that of the light-receiving sided-optical waveguide, the optical touch panel further comprising means for generating a signal to generate a signal to provide input operational feeling using a detection signal received by the light-receiving element as a result of coordinate inputting.
1 Assignment
0 Petitions
Accused Products
Abstract
An optical touch panel 10 has means 20 for generating a signal to provide an operator with input operational feeling. The center of a light-emitting sided-core 17 is positioned lower than the center of a light-emitting sided-optical waveguide 14 and the center of a light-receiving sided-core 19 is positioned lower than the center of a light-receiving sided-optical waveguide 15, thereby light beams 22 are situated close to a transparent panel 21, and this enables to obtain natural input operational feeling having a minimal time lag between input operation and a signal generation to provide input operational feeling.
8 Citations
6 Claims
-
1. An optical touch panel comprising:
-
a coordinate input region; a light-emitting element; a light-receiving element; a light-emitting sided-optical waveguide connected to the light-emitting element and having an output end; and a light-receiving sided-optical waveguide connected to the light-receiving element and having an input end, wherein the output end of the light-emitting sided-optical waveguide and the input end of the light-receiving sided-optical waveguide are located on opposite sides of the coordinate input region, wherein the light-emitting sided-optical waveguide comprises a light-emitting sided-cladding layer; and
a light-emitting sided-core embedded in the light-emitting sided-cladding layer, the light-receiving sided-optical waveguide comprises a light-receiving sided-cladding layer; and
a light-receiving sided core embedded in the light-receiving sided-cladding layer, the light-emitting sided-cladding layer has a lower refractive index than the light-emitting sided-core and the light-receiving sided-cladding layer has a lower refractive index than the light-receiving sided-core, and the center height of the light-emitting sided-core is lower than that of the light-emitting sided-optical waveguide and the center height of the light-receiving sided-core is lower than that of the light-receiving sided-optical waveguide, the optical touch panel further comprising means for generating a signal to generate a signal to provide input operational feeling using a detection signal received by the light-receiving element as a result of coordinate inputting.- View Dependent Claims (2, 3, 4, 5, 6)
-
Specification