Abstract: When operating a resistive touch panel, a first command is issued by touching the touch panel using a finger. When the finger remains in contact with the touch panel, a second command is issued by touching the touch panel using a stylus. Therefore, a corresponding gesture operation can be executed in multi-touch applications after identifying the first and second commands.

Abstract: An optical module is used in an electronic device to share a light source. The light source can be shared concurrently with an image projection device and a different component, such as a liquid crystal display device. Alternatively, the light source is used for providing illumination to the component only when the light source is not used by the image projection device. When the light source is used for providing illumination to the liquid crystal display device, at least part of the light beam from the light source is coupled to a back-light unit of the display device, for example. In addition to providing illumination to the liquid crystal display device, part of the light beam can also be used to provide illumination to other accessories or components, such as a keyboard of the electronic device.

Abstract: This disclosure relates to a touch display panel and more specifically to a borderless touch display panel. The touch display panel includes a Fresnel lens, a touch-sensing panel and a coordinate transforming module, wherein the flat display panel and the Fresnel lens are spaced apart by a distance. The flat display panel outputs an original image having an original coordinate system. The Fresnel lens is used to transform the original image into a display image to be viewed by the user, wherein the display image has a display coordinate system. The touch sensing panel will sense the user's touch and output a touch coordinate of a touch and the coordinate transforming module will transform the touch coordinate into an action coordinate based on a transformation parameter set.

Abstract: When operating a resistive touch panel, a first command is issued by touching the touch panel using a finger. When the finger remains in contact with the touch panel, a second command is issued by touching the touch panel using a stylus. Therefore, a corresponding gesture operation can be executed in multi-touch applications after identifying the first and second commands.

Abstract: A backlight module of the present invention includes a light source unit and a light guide plate. The light guide plate has a light incident surface, and the light emitting unit is disposed corresponding to the light incident surface to provide a light incident on the light guide plate. The light marches in the light guide plate and provides a uniform lighting effect. A plurality of microstructures is disposed on the light incident surface, and each of the microstructure has a microstructure depth. The light guide plate has a plate thickness. The ratio of the microstructure depth to the plate thickness is substantially between 0.003 and 0.0625.

Abstract: An optical plate comprising a base having a plurality of protrusions and flat portions, wherein the protrusions and the flat portions are arranged alternately; at least one auxiliary structure, formed on the protrusions, having birefringence; and a matching layer formed on the base and the auxiliary structure is provided.

Abstract: An optical module is used in an electronic device to share a light source. The light source can be shared concurrently with an image projection device and a different component, such as a liquid crystal display device. Alternatively, the light source is used for providing illumination to the component only when the light source is not used by the image projection device. When the light source is used for providing illumination to the liquid crystal display device, at least part of the light beam from the light source is coupled to a back-light unit of the display device, for example. In addition to providing illumination to the liquid crystal display device, part of the light beam can also be used to provide illumination to other accessories or components, such as a keyboard of the electronic device.

Abstract: A lens module includes a holder base, which is affixed to a circuit board and has bottom receiving holes for receiving LEDs or sensors on the circuit board and a top flange with a foolproof notch, a lens device press-fitted into the top flange and secured to the foolproof notch to ensure accurate positioning and having flat protrusions engaged into respective through holes in the holder base in alignment with the LEDs or sensors, and a top cover capped on the holder base to hold down the lens device and having through holes that receive convex portions of the lens device respectively.

Abstract: A lens module includes a holder base, which is affixed to a circuit board and has bottom receiving holes for receiving LEDs or sensors on the circuit board and a top flange with a foolproof notch, a lens device press-fitted into the top flange and secured to the foolproof notch to ensure accurate positioning and having flat protrusions engaged into respective through holes in the holder base in alignment with the LEDs or sensors, and a top cover capped on the holder base to hold down the lens device and having through holes that receive convex portions of the lens device respectively.

Abstract: A valuable paper validator for use in a vending (coin change) machine is disclosed to include a delivery unit for delivering a valuable paper through a delivery path, a LED package having multiple LED chips spaced above the delivery path and controllable to emit different wavelengths of intense pulsed light, a collimator lens for collimating light passing from the LED package through the valuable paper, a photodiode spaced below the delivery path for collecting light passed through the valuable paper for verifying the authenticity of the valuable paper, and a condensing lens for focusing different wavelengths of light passed through the valuable paper onto the photodiode.