122results about "Semiconductor devices for light sources" patented technology

A lighting device comprising first, second and third groups of solid state light emitters, the first group emitting light having a dominant wavelength of 430 to 490 nm, the second group at 525 to 575 (in some devices 540 to 575 nm), the third group at 610 to 640 nm. In some devices, wavelength of light from emitters in first and second groups, and light from second and third groups, differs by at least 70 nm. Some devices emit light having CRI Ra of at least 70 when first, second and third groups of emitters are illuminated. Also, a lighting arrangement comprising first, second and third groups as above, in addition to a fourth emitter emitting light of dominant wavelength outside the ranges for the first, second and third groups, and not more than 10 nm different from a dominant wavelength of a color on an item to be illuminated.

LED lamp assembly particularly adapted for automotive applications that utilizes one or more standard replaceable LED bulbs with changeable optics to make multiple beam patterns. Preferably the optic is molded and easily replaced. An electric module is mounted directly under the LED to facilitate the electrical connection and provide good thermal contact. The LED light source(s) and interchangeable optic are positioned and sealed in the base of a main reflector or the vehicle hull by means well known to those skilled in the art.

A beam adjustment mechanism for a light fixture includes a frame assembly having an aperture substantially within the center thereof. Multiple peripheral lighting units engage the sides of the frame assembly. Each lighting unit includes an LED, a heat sink, and a reflector member. A central connecting member and/or a central lighting unit is at least partially surrounded by the peripheral lighting units. The central connecting member and/or central lighting unit is hingedly connected to at least one of the peripheral lighting units. An adjustment shaft extends through and is moveably engaged with the aperture of the frame assembly. Movement of the adjustment shaft relative to the aperture exerts a force on the central connecting member and/or central lighting unit, which causes the hingedly connected peripheral lighting units to pivot relative to the central connecting member and/or central lighting unit.

A configurable ceiling lighting system for a grid ceiling comprising at least one and preferably a plurality of driver panels having a bottom and a defined perimeter sized to allow the driver panel to be set into and retained within the grid openings of a ceiling grid. The driver panel has at least one and preferably a plurality of electrical connectors accessible from the bottom of the driver panel. At least one and preferably a plurality of light modules are provided having a light source and an electrical connector complimentary to the electrical connectors of the panel drivers. The light modules can be operatively connected to the bottom of the ceiling panel drivers at selected connection points to produced desired arrays of ceiling lighting fixtures to meet particular lighting needs.

Solar-powered lighting devices that may be portable and/or collapsible are described. The devices may include a housing including a first wall, a second wall, and one or more side walls between the first wall and the second wall, at least one solar panel to generate solar energy, and a rechargeable battery to store the solar energy generated. The devices may include a plurality of operating modes for controlling lights within the housing, and a microprocessor for controlling the operating modes.

The systems and methods described herein relate to solid-state light sources capable of generating radiation beams for, but not limited to, the treatment of surfaces, bulk materials, films, and coatings. The solid-state ultraviolet source optically combines the light output of at least two and preferably as many four independently controllable discrete solid-state light emitters to produce a light beam that has a controllable multi-wavelength spectrum over a wide range of wavelengths (i.e. deep UV to near-IR). Specific features of this light source permit changes in the spectral, spatial and temporal distribution of light for use in curing, surface modification and other applications.

An optical lens for lighting fixture includes a body, which comprises a bottom surface and a light-exit surface at opposing bottom and top sides thereof, an elongated groove formed in the bottom surface, a light incident surface, a first intersection line and a second intersection line respectively connected between the two ends of the elongated groove and the bottom surface, a first line segment and a second line segment respectively connected between the light incident surface and the bottom surface, a first virtual line defined between the two ends of the first line segment, a first distance that is the shortest distance between the two ends of the first intersection line, and a SAGi that is the shortest distance between any point at the first line segment and the first virtual line and satisfies the equation: 0≦|SAGi/first distance|×100≦2.8.

The invention provides a mixed-light-source liquid-crystal projection light engine system. The portable liquid-crystal projection light engine system is composed of a light source module, a polarized light management module, an image signal module and a projection lens, wherein the light source module consists of a high-brightness laser, an incoherent LED (Light-Emitting Diode) solid light source, a fluorescent device and the like. The output brightness of the projection system is greatly increased, the light source module is safe and environmentally friendly, and projected images have bright color and clear quality. The polarized light management module consists of a color-combining prism, a polarization beam splitter (PBS), a polarization color-combining device and the like, and different polarization states of three-primary-color mixed light are integrated into the same polarized light to be emitted to the image signal module. The image signal module is a monolithic reflection type liquid crystal light modulation device, and image signals are loaded to the three-primary-color polarized light in sequence according to the image signals corresponding to primary colors. The projection lens is used for projecting the light carrying the image signals onto a screen.

A lens member includes at least one of the annular prisms including a facet at an edge between an inner annular surface and an outer surface of the at least one of the annular prisms. The prisms with facets may be provided at a central portion of the lens member and the facets are configured to refract light toward a light-exit side of the lens member.

The invention discloses a multifunctional integrated solar energy and wind energy monitoring street lamp which comprises a lamp pole, an integrated solar energy and wind energy monitoring street lamp device and a support for installing the integrated solar energy and wind energy monitoring street lamp device. The integrated solar energy and wind energy monitoring street lamp device comprises a control box, a solar power generation device, a wind power generation device, an automatic photovoltaic board cleaning device, an electric storage device, a camera and an LED lamp. The camera is connected with a mini-type network monitoring emission processor. LED screens are arranged on the periphery of the control box. The control box is installed on the lamp pole through the support. The multifunctional integrated solar energy and wind energy monitoring street lamp is compact in structure, small in occupied area, multifunctional and capable of greatly facilitating work and life of people; a solar photovoltaic board and a wind power generator supply power, energy is saved, and environment friendliness is achieved; the LED screens are installed to be used for advertising, a network monitoring system can remind a traffic management department in time to adjust the traffic vehicle jam condition, and road traffic safety is facilitated.

A light source device includes a first light source that emits light of a first polarization, and a second light source that emits light of a second polarization whose polarization direction is different from the light of the first polarization by 90 degrees. A combined wavelength band of the light of the first polarization and the light of the second polarization is a first wavelength band. A third light source emits light of a third polarization and of a wavelength band which is different from the first wavelength band, and a fourth light source emits light of a fourth polarization whose polarization direction is different from the light of the third polarization by 90 degrees. A combined wavelength band of the light of the third polarization and the light of the fourth polarization is a second wavelength band which is different from the first wavelength band. A reflecting element reflects the light of the first polarization. A first selective transmission element transmits the light of the first polarization and reflects the light of the second polarization based on the polarization direction of the light. A second selective transmission element transmits combined light of the light of the first polarization and the light of the second polarization, and reflects the light of the third polarization based on the wavelength band of the light. A third selective transmission element transmits the combined light of the light of the first polarization and the light of the second polarization based on the polarization of the wavelength band, transmits the light of the third polarization and reflects the light of the fourth polarization based on the polarization direction of the light. The light of the first polarization, the light of the second polarization and the light of the third polarization passing through the third selective transmission element, and the light of the fourth polarization reflected by the third selective transmission element proceed in the same direction.

A solar powered LED portable light tower. A solar powered LED portable light tower may comprise: one or more photovoltaic modules, an adjustable masthead, one or more lamps, one or more batteries, an inverter, a controller, and a base. The lamps may be light emitting diodes. The controller may be configured to turn on and off and dim said one or more lamps, and preferably comprises a motion sensor. The portable light tower may also comprise a concrete ballast, fork lift option, and/or a trailer option.

A multi-purpose solar lamp includes an illumination lamp powered by solar power, a positioning board detachably fixed onto a wall or any plane, and a plug-in part pluggable into the ground. The positioning board and the plug-in part can be simultaneously or alternately combined to the back of the illumination lamp to allow users to conveniently fix the illumination lamp to the wall or a wooden or concrete ground or plug the plug-in part into the ground/soil as needed to achieve a multi-purpose effect.

The invention relates to a luminous device, a cooling method thereof and a projector, wherein the luminous device comprises a light source, a detection unit, a cooling unit and a control unit, wherein the detection unit is connected to the light source and used for detecting current value and voltage value of the light source; the cooling unit is arranged close to the light source and used for cooling the light source; and the control unit is arranged between the detection unit and the cooling unit, and adjusts the cooling unit according to the current value and the voltage value. The invention can effectively reduce the response time and noise of the cooling unit, and avoid the damage to light sources with high heat value in the luminous device.

A light bulb includes a glass bulb having a top part and a bottom part which is connected to the top part. A light unit is located in a space defined between the top and bottom parts. The light unit has a transverse circuit board and at least one upright circuit board. Multiple Light Emitting Diodes are connected to the top surface and the bottom surface of the transverse circuit board. The at least one upright circuit board is connected to the top surface of the transverse circuit board. Multiple Light Emitting Diodes are connected to the outside surface of the at least one upright circuit board.

The light beams from the Light Emitting Diodes go through the glass bulb and toward different directions.

A light-emitting diode (LED) lamp comprises a lamp holder which is like a hollow cavity and is provided with an opening, an LED module arranged in the cavity of the lamp holder and a lampshade covering the opening of the lamp holder and the LED module. The lamp holder comprises a lengthwise groove-shaped installation rack and two baffles respectively arranged at two opposite ends of the installation rack. Two accommodating grooves respectively positioned at two opposite sides of the installation rack are arranged at the top of the installation rack. A base plate is stuck between each baffle and the installation rack. The tops of the base plates, the end edge of the lampshade and the tops of the baffles encircle two grooves together. The two grooves are respectively positioned at two opposite ends of the opening of the lamp holder. The grooves and the accommodating grooves surround the opening of the lamp holder and accommodate sealing glue so as to connect the lampshade and the lamp holder in a sealed manner. Compared with the prior art, the invention is characterized in that the structures of the accommodating grooves and the grooves ensure the sealing glue to be uniformly distributed, thus improving the overall sealing property of the lamp and being not easy to befoul the transparent lampshade so as to affect the lighting effect and the appearance of the lamp.

The invention discloses an operating lamp, and a light transmission cover and light spot regulation method of the operating lamp. The operating lamp comprises a light source, a housing, and a light transmission cover in front of the light source, wherein the light transmission cover includes a front cover and a back cover, at least one surface of the front cover is curved, at least one surface of the back cover is curved, the operating lamp further comprises a regulation device, and the relative position of the front and back covers is changed by the regulation device. The inventive operating lamp needs no control on the lamp base or internal illuminating devices, simplifies the internal structure, improves the reliability and can easily change the irradiation range.

A recessed downlight fixture and method for installation is provided. The recessed downlight fixture can be installed in a retrofit application, after a ceiling is installed, through a pre-existing opening in that ceiling. Alternatively, a recessed downlight fixture according to a second embodiment can be installed before a ceiling is present. In either embodiment, the light source coupled to, for example, a heat sink, can be universally moved in three degrees of movement, rotationally, along a tilt axis, or further within the ceiling to increase or decrease the recess. All such universal adjustments can take place through and below the ceiling opening during or after installation.

A light emitting diode (LED) lamp includes a substrate, a plurality of LED elements arranged on the substrate, and a reflector arranged on the substrate. The reflector includes a plurality of reflecting sheets obliquely extending upward from a center of the substrate. A projection of each reflecting sheet covers one LED element. Part of light from the LED element is reflected to a lateral periphery of the substrate by the reflecting sheet.

The invention discloses a LED bulb which comprises a backseat. The upper part of the backseat is equipped with a lamp cover. The backseat and the lamp cover can be made of aluminum. An LED light source is positioned in the lamp cover. The lamp cover is equipped with a through hole. The LED light source is interpenetrated in the through hole and some part thereof is exposed at the outside of the lamp cover. The invention is characterized in that the lower part of the backseat is equipped with a bottom cover, a 1W 12V drive is positioned in the space formed between the backseat and the bottom cover, the drive is connected with the LED light source, the drive is connected with a G4 or MR16 lamp needle which is directly coordinated with a G4 or MR16 lamp socket, and one end of the light needle extends to the outside of the bottom cover. The LED bulb has the advantages of convenient assembly, small volume, good heat dissipation effect, large luminous efficiency angle (which can reach 180 degrees) and long service life.

The invention relates to an eye protecting device against a computer. The eye protecting device consists of an outside protecting device and a lighting circuit, wherein the outside protecting device consists of corner frames, plat frames and elastic bands; the upper end and the lower end of each corner frame are respectively and fixedly connected with cylinders; the two corner frames are respectively arranged on the left side and the right side of a computer display; the two plat frames are respectively connected with the cylinders at the upper ends and the lower ends of the corner frames through the elastic bands; the two corner frames and the two flat frames are mounted at the periphery of the computer display. The lighting circuit consists of LED lamp bands, an LED lamp band brilliance control knob, an LED lamp band switch, a power input terminal and a wire, wherein the two lamp bands are respectively mounted on the inside surfaces of the two corner frames and the inside surfaces of the two plat frames; the LED lamp bands, the LED lamp band brilliance control knob, the LED lamp band switch and the power input terminal form the lighting circuit through the wire; the power input terminal can be connected with the computer through a USB interface. The eye protecting device eliminates the damage of light rays emitted by a computer backlight on eyes of a computer user, and better protects the eyes of the computer user.

The invention discloses a heat dissipation structure of LED lamp, aiming at providing a heat dissipation structure of LED lamp which has the advantages of good heat dissipation effect, long LED service life and high integration level. The invention comprises a plurality of LEDs(1), a circuit board(2), a heat conduction insulating layer(3), a metallic layer(4) and a bonding pad(5), wherein, the heat conduction insulating layer(3) is coated on the surface of the circuit board(2), the metallic layer(4) is coated on the outer surface of the heat conduction insulating layer(3). The invention can be widely applied to the LED illuminating field.

The invention relates to the technical field of machinery, in particular to an electric nasal feeding syringe. The electric nasal feeding syringe comprises a holding handle, the holding handle is provided with a protection cylinder and a fixing cylinder, a powerful motor is tightly bonded on the inner wall of the protection cylinder, a ball screw is arranged at the tail end of an output shaft of the powerful motor, an arc-shaped groove is formed in the cylinder wall of the fixing cylinder, the section of the arc-shaped groove is in a semicircular shape, two through grooves which are mutually symmetric and communicate with the outside are formed in the groove wall of the arc-shaped groove, a limiting assembly is arranged in the fixing cylinder and comprises an arc-shaped fixing plate, a material injecting mechanism is further arranged in the fixing cylinder and comprises a connecting rod, and the connecting rod penetrates through a rotating ring. The electric nasal feeding syringe is easy and quick in operation, the working efficiency is improved, the treatment time is saved, and the patient pain is relieved.