Abstract: A pointing device and method for using the same to measure the motion of that pointing device over a surface is disclosed. The pointing device includes an illumination system, an imaging system, and a controller. The illumination system generates light in a plurality of wavelength bands and illuminates a surface below the pointing device with light from one of the wavelength bands. The imaging system records images of the illuminated surface. The controller selects the wavelength band used to illuminate the surface, compares first and second images recorded by the imaging system at different times when the surface is illuminated with that wavelength band, and determines a displacement indicative of the direction and distance the positioning device moved between the two different times.

Abstract: A device and method for producing an enhanced color image of a scene of interest captures a grayscale image of the scene of interest using a flash of infrared light and a color image of the scene of interest without using any flash of infrared light. The grayscale information from the grayscale image and the visible color information from the color image are combined to produce the enhanced color image.

Abstract: A light emitting device has a light emitting diode (LED), a reflector cup, and one or more adjustment mechanisms to control the intensity profile of light emitted from the light emitting device. The reflector cup has a base and a sidewall extending outward from the base. A base adjustment mechanism controls the total amount of light reflected from the base and into the beam of light emitted from the light emitting mechanism by controlling the aggregate reflectivity of the base. A sidewall adjustment mechanism controls the angle of the sidewall relative to the base. A vertical adjustment mechanism vertically raises or lowers the LED relative to the base.

Abstract: An enhanced light output light emitting diode (LED) is constructed using a plurality of single domed LEDs with each dome acting as a lens. By packaging multiple LEDs, each with its own dome (lens), greater-light output can be achieved. In one embodiment, each individually domed LED is a single color and the mixed colors from the group of LEDs within a device yields white light output. In another embodiment, the phosphors within each dome are mixed to produce white light. Reflectors can be added to enhance light output.

Abstract: A virtual display with motion synchronization (“VDMS”) device using one or more arrays of light sources for displaying messages. The VDMS device may include a motion sensor to detect and measure movement of the VDMS device, and synchronization circuitry configured to synchronize the light emission of the individual light sources in the arrays with the movement of the VDMS device. The VDMS device may also include a self-contained power source and a control unit and interface that allow the user to program the messages that are displayed by the VDMS device, as well as memory that stores user messages.

Abstract: A lighting source capable of producing white light using a semiconductor radiation source. The semiconductor radiation source may be an ultraviolet (“UV”) light emitting diode (“LED”) device that emits light at a short wavelength, e.g., near-violet or ultraviolet light. A thin film of phosphor may be deposited or coated on the surface of the UV LED or positioned directly above the UV LED. The lighting source may also include an UV reflector radiationally coupled to the thin phosphor layer that allows visible white light emitted from the thin phosphor to pass through and reflects shorter wavelength light back to the thin phosphor layer.

Abstract: An imaging device and method for producing a flash of light utilizes pulsing of one or more color lights, e.g., red, green and blue lights, emitted from light sources to produce the flash of light. The light sources may include light emitting diode dies configured to generate different color lights.

Abstract: An electronic flash, imaging device and method for producing flashes of light uses a diffractive optical element to produce a flash of light having a rectangular radiation pattern. The diffractive optical element is configured to diffract light emitted from a light source such that the radiation pattern of the light emitted from the diffractive optical element is rectangular to produce the rectangular flash of light.

Abstract: A light emitting diode system includes a housing including a light emission opening and a light emitting diode disposed within the housing. A first film layer covers the light emission opening and includes a uniaxial collimating film configured to direct light from the light emitting diode along a first axis.