2056results about "Lighting device details" patented technology

In one embodiment, the invention relates to an apparatus for increasing the repetition rate in a light source. The apparatus includes a first optical coupler comprising a first arm, a second arm and a third arm; a first mirror in optical communication with the second arm of the first optical coupler; and a first optical delay line having a first end in optical communication with the third arm of the first optical coupler and a second end in optical communication with a second mirror, wherein light entering the first arm of the first optical coupler leaves the first arm of the first optical coupler either delayed by an amount (τ) or substantially undelayed.

The present invention provides a luminance enhancement apparatus and method for use with light-emitting elements comprising a conversion system adjacent the light-emitting element for converting electromagnetic radiation of one or more wavelengths to alternate wavelengths. This conversion process can be enabled by the absorption of the one or more wavelengths by the conversion system and emission of the alternate wavelengths thereby. The conversion system comprises a predetermined surface relief pattern on the face opposite the light-emitting element to provide a means for reducing absorption of the emitted alternate wavelengths in addition to providing a means for reflection of the emitted alternate wavelengths from the conversion system with a reduced number of reflections, thereby enhancing the illumination provided by the light-emitting element. As the present invention operates on principles of increased surface area and self-excitation of the conversion materials through the use of a predetermined surface relief pattern, the present invention may be applied to both organic LEDs, phosphor-coated semiconductor LEDs, and light-emitting elements coated with a population of quantum dots embedded in a host matrix.

An adaptive lighting system for an automotive vehicle. The adaptive lighting system has a wavelength conversion device for receiving the light radiation (L) from the primary source and re-emitting white light radiation (B). An optical imaging system receives the white light (B) re-emitted by the wavelength conversion device and projects this light (B) in front of the vehicle to form a lighting beam, the wavelength conversion device being situated close to a focal plane of the optical imaging system, and the scanning system and the optical system being situated on the same side of the wavelength conversion device. An intensity of the white light radiation (B) emitted by the wavelength conversion device is capable of being modulated between a minimum value and a maximum value, and the scanning is performed at variable speed.

A semiconductor light-emitting device and a method for manufacturing the same can include a wavelength converting layer in order to emit various colored lights including white light. The device can include a board, a frame located on the board, at least one light-emitting chip mounted on the board, the wavelength converting layer located between an optical plate and an outside surface of the chips so that a density of a peripheral region is lower than that of a middle region, and a reflective material layer disposed at least between the frame and a side surface of the wavelength-converting layer. The device can have the reflective material layer form each reflector and can use a wavelength converting layer having different densities, and therefore can emit a wavelength-converted light having a high light-emitting efficiency and a uniform color tone from various small light-emitting surfaces.

The invention provides a light module (1) with a light source (2) for emitting a beam of light (5), an adjustable optical element (300) for adjusting the beam of light (5) from the light source (2) into an adjusted beam of light (25) with a scattering pattern that is electrically variable; and a controller (304) for controlling, in response to an adjusting control signal (371), at least one element of a group of elements comprising the adjustable optical element (300) and the light source (2) by means of at least one driving signal (375, 376). A multi-purpose light, for example for interior car lighting, is advantageously provided thereby.

It is an object of the present invention to provide a light diffusing sheet that has a less tendency to be deflected due to heat generated by a lamp and a back light unit using this. The light diffusing sheet of the present invention comprises a base sheet and a light diffusing layer provided on a surface of the base sheet. The light diffusing layer is formed by dispersing resinous beads and a fine inorganic filler into a binder. It is preferable that the fine inorganic filler has an averaged particle diameter of not smaller than 5 nanometers and smaller than 1 micrometer. It is preferable that the amount of the fine inorganic filler to be mixed is 10 parts to 500 parts by weight for 100 parts by weight of a polymer component in the binder. As the fine inorganic filler, colloidal silica is used.

An optical apparatus includes a first membrane, a second membrane and at least one electromagnetically displaceable component. The first membrane includes an optically active area. The first membrane and the second membrane are coupled by a filler material disposed in a reservoir. At least one electromagnetically displaceable component is coupled to the filler material via the second membrane, such that a displacement of the at least one electromagnetically displaceable component is operative to cause a deformation of the optically active area of the first membrane by movement of the filler material.

An automotive discharge bulb having a light emitting tube includes a ceramic tube with paired electrodes oppositely placed, and contains a light emitting material and starting rare gas. A transversal section of the ceramic tube is longitudinally elongated. Because the capacity of an enclosed space of the ceramic tube is small, after discharging begins, the enclosed space temperature increases. Consequently, the ceramic tube has a good luminous flux rising characteristic. Because of the small surface area of the ceramic tube, the load imposed on the wall surface increases. Consequently, the ceramic tube has good luminous efficiency. In the ceramic tube having a longitudinally elongated transversal section, an arc generated into an upwardly convex shape and the tube wall do not make contact. Thermal shock resistance required of the ceramic tube is alleviated, durability is enhanced, and the ceramic tube is made of a ceramic material hitherto unusable.

An illumination unit for vehicle headlights may include a light-emitting diode device, a housing and an assembly board on which components of an operating circuit for operating the light-emitting diode device are arranged, wherein the housing and the assembly board define an interior space, wherein the assembly board has at least one electrically conductive inner layer that is connected to a ground reference potential of the operating circuit and on its surface the assembly board has at least one electrical contact surface which is contacted with at least one electrically conductive inner layer, and the housing has an electromagnetic shielding structure configured to provide electromagnetic shielding of the interior space, wherein the electromagnetic shielding structure is connected to the at least one electrical contact surface.

In a vehicle ceiling-mounting electric equipment assembly of the invention, an FPC (12) is welded by heat to a casing (11) of a lamp unit (2), and an FFC (16) for external connection is electrically connected to the FPC (12) by press-clamping or welding. Switches (13) and lamp socket holes (14a) are provided at the FPC (12). An end portion of the FPC (12) is folded to be inserted into a fitting portion (11a) of a recess-shape in which an optional member (26) can be mounted, and a circuit pattern is exposed to a side surface of the fitting portion (11a) to form a connection portion. Therefore, the compact, lightweight design can be achieved, and parts, such as a connector, are unnecessary, thus reducing the number of the component parts.

An illuminating apparatus includes a first light source that emits blue laser light, a light emitting section that emits light by being irradiated with the blue laser light, a second light source that emits green laser light, a biaxial MEMS scanner that irradiates a part of the light emitting section with the green laser light, and a convex lens that projects the light emitted from the light emitting section to the outside.

An optical element for a light based touch surface including a concatenated plurality of segments, wherein each segment is paired with a respective light emitter, each segment including an undulating series of pairs of reflective or refractive facets, wherein a first facet in each pair is oriented so as to collimate light emitted from a first light emitter associated with the segment and a second facet in each pair is oriented so as to collimate light emitted from a second light emitter associated with the segment, and wherein the first light emitter associated with the segment is the light emitter paired with the segment and the second light emitter associated with the segment is the light emitter paired with a neighboring segment.

To provide a light source unit which can increase luminance and a projector including this light source unit. This light source unit includes a luminous wheel having a segment area on which a luminescent material layer is formed which emits light of a predetermined wavelength band by receiving light, and a segment area which is made into a transmission portion which transmits light, a primary light source which shines light of a visible wavelength band on to the luminous wheel, a secondary light source which emits light of a wavelength band which is different from light from the luminescent material layer and light from the primary light source, a collective optical system which collects light from the luminous wheel and the secondary light source to cause them to converge to the same optical path, and a light source control device which controls the emission of light from the light sources.

The embodiment of the invention discloses a light-emitting device and a projection system. The light-emitting device comprises a first laser light source used for emitting first laser, a second laser light source used for emitting second laser, a light-path regulation device, a wavelength conversion device and a scattering device, wherein the light-path regulation device is used for receiving the first laser and the second laser coming in the same direction and enabling the first laser and the second laser to be emitted to the wavelength conversion device and the scattering device respectively along different light paths; the wavelength conversion device comprises a first surface, the first surface is used for receiving the first laser emitted by the light-path regulation device, the first laser is converted into stimulated light through the wavelength conversion device, and the stimulated light is emitted from the first surface to the light-path regulation device; the scattering device comprises a second surface, the second surface is used for receiving the second laser emitted by the light-path regulation device, and the scattering device scatters the second laser and emits the scattered second laser to the light-path regulation device from the second surface; the stimulated light emitted by the wavelength conversion device is combined with the second laser emitted by the scattering device through the light-path regulation device into one light path to be emitted. The device has the advantage of being compact in structure.

A straight tube LED lamp includes: a straight tube in which a plurality of light emitting diodes is housed; a first cap for forming a power feeding connection to the plurality of light emitting diodes, provided on one axial direction end side of the straight tube; and a second cap for grounding, provided on another axial direction end side of the straight tube. A first terminal for forming an electrical connection to a power feeding terminal of a first lamp socket is provided in the first cap. A second terminal for forming an electrical connection to a grounding terminal of a second lamp socket is provided in the second cap.

Exemplary embodiments disclosed herein provide a rigid LCD assembly including a LCD having a perimeter, a first layer of tape around the perimeter of the LCD, and a diffusing plate attached to the later of tape so as to create a cavity defined by the space between the LCD, tape, and diffusing plate. One or more optical films may be inserted into the cavity, and while constricted in directions perpendicular to the films, the films may be free to move slightly in the directions parallel to the films. A U-shaped backlight wall may attach to the diffusing plate and would contain a backlight. An optional thermal plate can be attached to the backlight wall, which can be used with a second thermal plate to define a channel for accepting cooling air.

The invention relates to light emitting devices (2) with variable output color. More specifically, the inventions provides a color conversion cell (10) which can be positioned in front of a light source (4) in order to generate other color or color temperatures. Typically the light source is a light emitting diode (LED) which is power efficient but emits in a narrow and fixed spectra. The new colors are generated by photoluminescence in fluorescent dyes contained in the cell. The color converting of the cell is electrically controllable, preferably by controlling the orientation, density or distribution of the fluorescent dyes, or by controlling a pathlength of the light in the cell.

Devices employing electroactive polymer actuators are disclosed. Acrylic dielectric material based actuators are optionally provided in which architectures are presented that allow for improved power output as compared with other known acrylic dielectric material based transducers. Such technology may be applied in motor-driven applications, lightweight flight applications and lighting applications among others.

A structure for guiding light into a light guide plate to conduct total internal reflection comprises a guide light plate and a prism; the prism is integrated with the guide light plate or joined to the guide light plate with an optical adhesive layer; the horizontal surface of the prism is parallel to the upper and lower surfaces of the guide light plate; the maximum angle between the horizontal surface and the slant surface of the prism is only 20 degrees to reduce the thickness of the prism greatly to meet requirements of lightness, thinness, shortness, and smallness for the electronic product; due to a special configuration of the prism and a special arrangement between the guide light plate and the prism, the most part of the light shot to the prism by the light source with any projecting angle is guided into the guide light plate to propagate the total internal reflection such that the light has an intensity capable of being sensed.

The invention discloses a light source system, an illuminating device and a projecting device. The light source system comprises a color wheel and a light path combining system. The color wheel is used for receiving at least two bundles of incident lights at different positions and correspondingly outputting at least two bundles of emergent lights. The light path combining system is used for carrying out light path combination on at least two bundles of the emergent lights. The color wheel is provided with a first region; the first region receives first incident lights; and wavelength conversion is carried out on the first incident lights so as to generate first emergent lights. With the adoption of the manner, the quantity of the color wheel can be sufficiently reduced and the volume of the light source system is effectively reduced; and meanwhile, the cost of the light source system is effectively reduced.