49 results about "Effect light" patented technology

An LED lighting device of AC power-driven type having a comparatively simple constitution and a high power efficiency. The device compares a signal voltage (rectified voltage) obtained by rectifying an AC source with a predetermined reference voltage and controls ON/OFF of a driving current to each LED of an LED array in response to a comparison result. In this constitution, a large voltage of AC source enables lighting of more number of LEDs, while a small voltage thereof enables lighting of less number of LEDs, thus enhancing power efficiency of the LED lighting device.

An illuminating device includes a housing and an illuminating module mounted in the housing. The housing defines a sealed space that includes a light-transmitting plane on an end thereof. The illuminating module includes a circuit board and lighting elements mounted on the circuit board. The housing includes a housing body and a cap. The housing body includes an open first end, and the cap is mounted to and covers the open first end of the housing body, with the circuit board of the illuminating device being sandwiched between an engaging area between the cap and the housing body. Thus, the heat generated by the illuminating module can be conducted to the housing, providing improved heat-dissipating effect.

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.

Extended area lighting devices include a light guide and diffractive surface features on a major surface of the light guide, at least some diffractive surface features adapted to couple guided-mode light out of the light guide. The diffractive features include first and second diffractive features disposed on respective first and second portions of the major surface. A patterned light transmissive layer, including a second light transmissive medium, optically contacts the second diffractive features but not the first diffractive features. A first light transmissive medium optically contacts the first but not the second diffractive features. The first and second portions may define indicia, and the first and second diffractive features provide low distortion for viewing objects through the light guide such that the indicia is not readily apparent to users when guided-mode light does not propagate within the light guide. Optical films having such diffractive features are also disclosed.

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.

The multi-directional lighting fixture includes a lighting fixture having a substantially elongated opaque housing with first and second ends with an open top for emitting light in an upward direction and a longitudinal slot along the bottom surface of the housing extending between the first and second ends. The longitudinal slot includes a shielding material, such as a louver or cover, with a predetermined degree of light translucence. The housing has a substantially elliptical cross section tapering towards one end of the housing. The ends of the housing have elliptical translucent members that can transmit lighting horizontally and radially outward from the interior of the housing. Two or more housings can be coupled together in series.

A power and control module for a Power over Ethernet (PoE) light emitting diode (LED) lighting system includes an input channel for receiving PoE input power from a PoE switch, an output channel for providing PoE output power to a plurality of LED light fixtures and a power transfer unit coupled between the input and output channel for providing the PoE input power and/or a secondary input power to the output channel as the PoE output power. A secondary power input unit selectively provides secondary power to the power transfer unit. A processor is controls the power transfer unit to adjust an amount of PoE input power and secondary input power to obtain the PoE output power. Secondary input power can be an emergency power source during line power outages. Secondary input power could be a renewable energy power source used preferentially to the PoE input power when available.

An illuminating device has an LED, a lighting panel provided corresponding to the LED for guiding light emitted from the LED to illuminate an LCD. An optical membrane is provided on a surface through which the light from the LED passes so as to correct chromaticity of the light.

The invention relates to a semiconductor lighting driving circuit which is compatible with a thyristor dimmer and a voltage input type dimmer. The semiconductor lighting driving circuit comprises a rectification filtering circuit, a power factor correction (PFC) circuit, a control circuit and a conversion circuit, wherein the rectification filtering circuit is used for converting an alternating current which comes from an alternating current power supply into a direct current; the PFC circuit is used for performing voltage reduction on the direct current; the control circuit is used for generating a pulse width modulation (PWM) control signal according to the direct current which is subjected to voltage reduction or an output voltage of the voltage input type dimmer; and the conversion circuit is used for supplying electric energy to a semiconductor lighting device according to the PWM control signal. The semiconductor lighting driving circuit is compatible with the thyristor dimmer and the voltage input type dimmer, can steadily operate in various kinds of dimming modes, and is high in generality. The semiconductor lighting driving circuit can independently operate, and the semiconductor lighting driving circuit and other circuit modules can conveniently form a product with high cost performance. Moreover, with the PFC circuit, the electromagnetic interference of the circuit can be remarkably reduced, so that the circuit operates more steadily and more reliably.

The invention relates to a novel LED (light emitting diode) lighting driving power supply, wherein the input end of the driving power supply is connected with the output end of the driving power supply via a feedback circuit; the feedback circuit comprises a voltage control loop, a current control loop and a PWM (pulse width modulation) regulating circuit; the feedback signals of the voltage control loop and the current control loop are input to the PWM regulating circuit by an optical coupler; the PWM regulating circuit is connected with a transformer circuit so as to control the output voltage; and in the current control loop, a triode is adopted to be matched with a sampling resistor so as to regulate the input duty ratio of the PWM chip, thereby regulating the output current and keeping constant current. The driving power supply combines the triode, a constant voltage source and the optical coupler to control a load end and the PWM controller of the whole circuit so as to output the constant current and constant voltage, thereby driving the LED. The novel LED lighting driving power supply needs few required apparatuses and is high in reliability.

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.

In at least one embodiment of the disclosure, a discharge lamp lighting device includes a discharge lamp driving unit that drives a discharge lamp (90) by supplying an AC driving current (I) to the discharge lamp (90). A memory unit (44) is configured to store driving parameters for the AC driving current (I). A control unit (40) is configured to control the discharge lamp driving unit based on the driving parameters stored in the memory unit (44). The driving parameters comprise a range of holding time values, each holding time value representing a time period in which the AC driving currentis to be continuously maintained at a same polarity. Upon a predetermined time condition, the control unit (40) selects one of the holding time values based on a predetermined probability and controls the discharge lamp driving unit based on the selected holding time value.

The invention discloses a head-mounted multifunctional working lamp control system, which comprises a central processor, a pupil tracking module, a ranging module, an actuator module, a light induction module, a brightness control module and a power supply module, wherein according to information provided by the pupil tracking module, the ranging module and the light induction module, the central processor carries out comprehensive processing and outputs control signals to the actuator module, the brightness control module and the power supply module; and the power supply module provides power for the central processor and each module in the system. Accurate light fixed spot irradiation is provided for a worker in need of lighting in different environments, the lamp brightness is changed according to the light changes in the environment, and the best lighting effects are thus achieved.

The invention discloses a plane lighting device. The plane lighting device comprises a light sources and an optic piece arranged above the light sources. The optic piece comprises an incident plane facing the light sources and an emergence plane departing from the light sources. The optic piece comprises a plurality of prism structures formed on the incident plane and a plurality of micro diffusing structures formed on the emergence plane. The prism structures protrude relative to the incident plane, and the micro diffusing structure recess towards the incident plane.

The invention discloses an LED panel lamp structure with a novel lighting manner. The panel lamp comprises frames, a back plate, a light guide plate, a diffusion plate, a light source plate and a drive. The light source plate is adhered to one frame I; the surface of the light guide plate is provided with a reflecting film in an adhered manner; the diffusion plate, the light guide plate and the back plate are integrated and clamped in the frame I provided with the light source plate and the other three frames; the diffusion plate is mounted at the bottom of a panel lamp and is opposite to the reflecting film of the light guide plate; the back plate is mounted at the top of the panel lamp and is arranged on the same side with the reflecting film of the light guide plate. A structure of the light source plate is mounted on the LED panel lamp, the assembling procedures are simple, a few materials are required, cost of raw materials of products is reduced, cost consumption of manual assembly is reduced, assembly time is shortened, producing efficiency of the products is improved, and the structure is adaptive to promotion.

The invention relates to a lantern decorative lighting integrating with a redundancy fault-tolerance drive control chip, comprising a hose lamp, a framework, an upper supporting part and a lower supporting part. The framework is connected to the upper supporting part and the lower supporting part; the hose lamp is arranged on the framework; the upper supporting part and the lower supporting part are butterfly-shaped framework disks in multijaw shapes and are respectively provided with an upper adjusting connecting rod and a lower adjusting connecting rod; the hose tube is internally provided with a luminescence unit which comprises a PCB; at least one decorative lighting transmission driving control chip, at least one LED, a power supply anode line, a power supply cathode line and at least two signal control line transmission circuits are arranged on the PCB; the decorative lighting transmission driving control chip on the PCB is the redundancy fault-tolerance drive control chip which is provided with at least two parallel signal control line transmission channels; the transmission channels are connected by a line; control signals are input into the redundancy fault-tolerance drive control chip through the circuit; and the redundancy fault-tolerance drive control chip directly drives and controls an LED display unit on the PCB to illuminate.

The invention discloses an LED (light emitting diode) human body infrared sensing lamp which comprises a lamp body and a lamp shade, wherein one end of the lamp body is provided with an planar LED light emitting unit, the lamp shade is a transparent bubble shade, the planar LED light emitting unit is arranged in the lamp shade, the lamp body is a metal column, the other end of the lamp body is connected with a lamp cap, and an infrared sensor is arranged above the planar LED light emitting unit. Moreover, the infrared sensor is a high-tech product integrating infrared sensing and the lighting technique, can automatically control the on/off of the lamp by taking human body heat released infrared ray serving as a control source; therefore, people can avoid the manual work of turning on or turning off the lamp; furthermore, the LED human body infrared sensing lamp has the function of automatically extinguishing.

The invention belongs to the field of image observation equipment and provides a micro-distance and wide-angle observation shooting device. The device comprises a parallel light source module, a wide-angle and micro-distance observation device, a pressing plate, a glass plate and a polarizer. An observed object is arranged between the pressing plate and the glass plate. The wide-angle and micro-distance observation device is arranged on the inner side of the glass plate. The view-field angle of the wide-angle and micro-distance observation device is larger than or equal to two times the Brewster angle. The parallel light emitted from the parallel light source module passes through the glass plate and then is reflected to produce the reflected light. The polarizer is used for eliminating the reflected light which is incident to the wide-angle and micro-distance observation device. The included angle between the optical axis of the parallel light emitted from the parallel light source module and the optical axis of the lens of the wide-angle and micro-distance observation device is the Brewster angle. The parallel light source module includes a plurality of parallel light source units. According to the technical scheme of the invention, the parallel light source units and the parallel light source module are applied to the wide-angle and micro-distance observation. Therefore, the problems that the glass plate reflects the light so as to cause the limited condition of both the lighting and the observation can be solved.

The invention is applicable to the field of lighting, and provides a circular lighting lamp comprising a lamp shell and a heat insulating board which divides the lamp shell into an electrical chamber and a light source cavity; a light source is arranged in the light source cavity, the top of the light source is provided with a reflector, the middle part of the reflector is provided with a throughhole for the light source to pass through, and the axis of the reflector coincides with the optical axis of the light source; a circular part which is connected with the inner surface of the reflector is arranged on the circumference of the through hole, the circular part is provided with a plurality of fixing holes, a plurality of support columns pass through the fixing holes and are screwed into the heat insulating board so as to position the reflector onto the top of the light source. The embodiment of the invention arranges the reflector in the circular lighting lamp, the reflector reflects part of the upward light of the light source so that the light is emitted downwards so as to eliminate the dark spot areas below the lamp, not affect lateral illumination, meet the requirements of light distribution of circular lighting, and simultaneously reduce the cost.

The invention is applied to the technical field of lighting emitting diodes (LED), and provides an extension structure of an LED. The extension structure comprises a substrate 1, a transition layer 2, an u type gallium nitride layer 3, an n type gallium nitride layer 4, a quantum well layer 5 and a p type gallium nitride layer 6; the electron concentration of the n type gallium nitride layer 4 is gradually varied, and the electron concentration at the side far from the quantum well layer 5 is higher than that at the side close to the quantum well layer 5. The extension structure of the LED is simple in structure and convenient to manufacture; the problem of non-uniform current density distribution in the prior art is overcome; the current expansion is raised; the non-uniform current distribution is reduced; the lighting efficiency and durability of the LED can be effectively improved.

A solar-powered lighting/illumination fixture for hanging flower planters or potted flowers comprises a body that can be affixed through a central opening or the like to the hanging hardware of the planter. The lighting fixture has solar cells that charge internal batteries during daylight hours and drive lights that illuminate the planter during nighttime hours. The fixture can also be affixed with a spoke that will allow it to be supported in the ground to provide pathway lighting. The lighting is provided through LEDs which also may accommodate light filters that can provide different colors to change the mood of the setting, as well as being provided with an adapter to fit most hanging planters in the market and also provided with an attaching mechanism that allows the height of the lighting fixture above the planter to be adjusted.