초록 ▼

A parabolic light emitter incorporates a solid state light emitter embedded in a transparent body formed with one planar surface and an opposing surface formed as a paraboloid, the outer surface of which is coated with a light reflecting material. In one embodiment, a reflective member is interposed

A parabolic light emitter incorporates a solid state light emitter embedded in a transparent body formed with one planar surface and an opposing surface formed as a paraboloid, the outer surface of which is coated with a light reflecting material. In one embodiment, a reflective member is interposed between the light emitter and the planar surface.

대표청구항 ▼

In a touch input device having a plurality of beams of light generated from individual light surfaces, and a plurality of photosensitive devices for responding to said beams, the combination comprising an elongated body of transparent material, a plurality of optoelectrical devices embedded in said

In a touch input device having a plurality of beams of light generated from individual light surfaces, and a plurality of photosensitive devices for responding to said beams, the combination comprising an elongated body of transparent material, a plurality of optoelectrical devices embedded in said material, said body having an external surface in the form of a plurality of paraboloids, said paraboloids being aligned with their axes of symmetry in parallel, each of said paraboloids being aligned with one of the optoelectrical devices, a reflective coating on the exterior of each of said parabolic surfaces, and said body having a plane surface located on the opposite side of said optoelectrical devices from at least one of said paraboloid surfaces.