Abstract: An interactive projection device includes a light source configured to emit an input light beam, wherein the light source comprises a visible light emitting device; a first beam splitter configured to split the input light beam into first and second split light beams; a second beam splitter configured to split a scattered light beam received from a surface into third and fourth split light beams; an image forming device configured to produce an image light beam based on the first split light beam and emit the image light beam onto the surface through the first and second splitters, thereby generating a projection image on the surface; and a detector configured to detect the invisible light of the third split light beam, thereby acquiring a scattering image from the surface.

Abstract: A coordinate locating device for a display apparatus is provided, which can have lower manufacturing costs and can locate the coordinates of a single or multiple objects. The coordinate locating device includes a light source configured to emit light, wherein said light source comprises a light emitting device, at least one reflector configured to reflect the light from the light source, and a detector configured to detect the light reflected by the at least one reflector, wherein the light source and the detector are disposed at different positions on the same edge of the coordinate locating device.

Abstract: The subject invention relates to an interactive projection device. The interactive projection device includes a light source configured to emit an input light beam, wherein the light source comprises a visible light emitting device; a first beam splitter configured to split the input light beam into first and second split light beams; a second beam splitter configured to split a scattered light beam received from a surface into third and fourth split light beams; an image forming device configured to produce an image light beam based on the first split light beam and emit the image light beam onto the surface through the first and second splitters, thereby generating a projection image on the surface; and a detector configured to detect the invisible light of the third split light beam, thereby acquiring a scattering image from the surface.

Abstract: A coordinate locating device for a display apparatus is provided, which can have lower manufacturing costs and can locate the coordinates of a single or multiple objects. The coordinate locating device includes a light source configured to emit light, wherein said light source comprises a light emitting device, at least one reflector configured to reflect the light from the light source, and a detector configured to detect the light reflected by the at least one reflector, wherein the light source and the detector are disposed at different positions on the same edge of the coordinate locating device.

Abstract: A coordinate locating device capable of locating the coordinates of two or more objects is provided for a display apparatus. The coordinate locating device includes a first detector arranged together with a first light source at a first corner of the coordinate locating device, a second detector arranged together with a second light source at a second corner of the coordinate locating device, at least one reflector configured to reflect light from the first and second light sources, and a mirror arranged on a first edge of the coordinate locating device, configured to reflect mirrored images of two or more objects intruding the coordinate locating device, wherein the first and second detectors detect real images of the two or more objects, and at least one of the first and second detectors further detects the mirrored images of the two or more objects reflected by the mirror.

Abstract: Disclosed are systems, methods and techniques to integrate touch-sensing functionality with a liquid crystal display (LCD) panel. In a particular implementation, light sensing detectors are disposed on a backlight panel to detect changes in light incident on the backlight panel in response to a physical touching on a surface of an LCD panel. A location of the physical touching may then be estimated based upon signals received from the light sensing detectors.

Abstract: A sensing system for sensing a touch input on a touch sensitive device, the system including: a sensing plane; a well-collimated light source for generating a plurality of light rays along one or more planes different from the sensing plane; and a reflecting means adjacent one edge of the sensing plane for transforming at least a subset of the light rays into substantially parallel light rays and redirecting the subset of light rays along the sensing plane, at least one of the light rays along the sensing plane being interruptable by the touch input thereby allowing the sensing system to determine a position coordinate of the touch input. A related method of sensing a touch input on a touch sensitive device is also provided.

Abstract: A light guiding strip and a double-sided planar light apparatus are provided. According to one embodiment of the present invention, the double-sided planar light apparatus includes a plurality of light guiding strips, wherein the plurality of light guiding strips are positioned in a planar arrangement, each of the plurality of light guiding strips including a first plurality of light emitting surfaces disposed toward a first direction and a second plurality of light emitting surfaces disposed toward a second direction, each of the plurality of light guiding strips further including a first end and a second end configured to receive light, wherein the plurality of light guiding strips emit light from the first and second plurality of light emitting surfaces. Reflectors and light diffusion patterns on the light guiding strips provide control and independence over the two sides of the planar light apparatus.

Abstract: A light guiding strip and a double-sided planar light apparatus are provided. According to one embodiment of the present invention, the double-sided planar light apparatus includes a plurality of light guiding strips, wherein the plurality of light guiding strips are positioned in a planar arrangement, each of the plurality of light guiding strips including a first plurality of light emitting surfaces disposed toward a first direction and a second plurality of light emitting surfaces disposed toward a second direction, each of the plurality of light guiding strips further including a first end and a second end configured to receive light, wherein the plurality of light guiding strips emit light from the first and second plurality of light emitting surfaces. Reflectors and light diffusion patterns on the light guiding strips provide control and independence over the two sides of the planar light apparatus.