25944results about "Electric lighting" patented technology

The present invention relates to systems and methods for generating and / or modulating illumination conditions to generate high-quality light of a desired and controllable color, for creating lighting fixtures for producing light in desirable and reproducible colors, and for modifying the color temperature or color shade of light within a prespecified range after a lighting fixture is constructed. In one embodiment, LED lighting units capable of generating light of a range of colors are used to provide light or supplement ambient light to afford lighting conditions suitable for a wide range of applications.

An energy saving device for an LED lamp mounted to an existing fixture for a fluorescent lamp where the ballast is removed or bypassed. The LEDs are positioned within a tube and electrical power is delivered from a power source to the LEDs. The LED lamp includes means for controlling the delivery of the electrical power from the power source to the LEDs, wherein the use of electrical power can be reduced or eliminated automatically during periods of non-use. Such means for controlling includes means for detecting the level of daylight in the illumination area of said least one LED, in particular a light level photosensor, and means for transmitting to the means for controlling relating to the detected level of daylight from the photosensor. The photosensor can be used in operative association with an on-off switch in power connection to the LEDs, a timer, or with a computer or logic gate array in operative association with a switch, timer, or dimmer that regulates the power to the LEDs. An occupancy sensor that detects motion or a person in the illumination area of the LEDs can be also be used in association with the photosensor and the computer, switch, timer, or dimmer, or in solo operation by itself. Two or more such LED lamps with a computer or logic gate array used with at least one of the lamps can be in network communication with at least one photosensor and / or at least one occupancy sensor to control the power to all the LEDs.

The present invention provides a light tube for illumination by a power supply circuit including a bulb portion and a pair of end caps disposed at opposite ends of the bulb portion. A plurality of light emitting diodes are disposed inside the bulb portion and in electrical communication with the pair of end caps for illuminating in response to electrical current to be received from the power supply circuit.

Methods and systems are provided for illuminating body part with LED system. A system includes a LED system, a medical instrument and a microprocessor. The LED system is adapted to generate a variable color radiation. The medical instrument is adapted for positioning the LED system in proximity to the body part to illuminate the body part. The microprocessor is adapted to control at least one electrical current supplied to the LED system to vary a color of the variable color radiation. Exemplary systems may be particularly configured and suitable for use in medical applications, including diagnostic, surgical, forensic, and therapeutic interventions.

An electronic apparatus that includes a housing, a holder provided in the housing and a light-emitting portion provided in the housing. The holder is made of a resin and supports components. The holder includes an optical guide that guides light emitted from the light-emitting portion to outside of the housing, and the optical guide is formed integral with the holder.

The invention relates to a molded part, in particular a decorative part and / or a trim part for a vehicle interior. According to the invention, the molded part comprises at least one excitation source for emitting electromagnetic waves and at least one luminescent material which is excitable or excited by the electromagnetic waves emerging from the excitation source or sources to emit light in the visible range.

A light emitting diode (LED) light bulb configured to replicate the light output of a conventional incandescent light bulb is provided. The LED light bulb includes a base for coupling the bulb to a power source having at least one side wall defining a cavity; a generally rectangular substrate having a first end and a second end, the second end disposed in the cavity and electrically coupled to the base; a plurality of LEDs electrically coupled and disposed on the first end of the substrate, the plurality of LEDS arranged on a front face, back face and top edge of the first end of the substrate to emit light in a spherical output; and a light transmissive cover configured to enclose the plurality of LEDs, the cover being coupled to the base.

An illumination device has a light source, a waveguide, and a light-transmitting medium. The light source emits light of a first color. The waveguide has both optical waveguide and light scattering properties. The light-transmitting medium is composed of a matrix of substantially translucent material doped with a pigment, and is positioned between the light source and the waveguide such that a portion of the light emitted by the light source passes around the light-transmitting medium and reaches the waveguide directly, and a portion of the emitted light is received by the light-transmitting medium. The pigment changes a portion of the received light to a light of a second color. The waveguide receives and mixes the light of the first color and the light of the second color, and emits light of a combined color.

An illumination device simulates neon lighting using a light source for emitting light of a predetermined first hue and a light-transmitting medium having a predetermined density of phosphorescent dye positioned adjacent to the light source. The phosphorescent dye will absorb light emitted by the light source and emit light of a second hue. An observer of the device perceives light that is of a hue that is different from the predetermined first hue. A means for varying the intensity of the light emitted by the light source creates color changing effects in the illumination device. Light-emitting diodes (LEDs) are a suitable light source. A waveguide having both optical waveguide and light scattering properties is used to diffuse the combined light and simulate the uniform appearance of a neon tube. Alternatively, the waveguide itself can be doped with phosphorescent dye to emit light having the perceived hue.