53results about How to "Uniform light brightness" patented technology

A light-emitting diode (LED) street lamp is applicable for street lighting. The LED street lamp includes a casing, an LED module, and a heat dissipation module. The LED module and the heat dissipation module are arranged inside the casing. The LED module includes a frame, a circuit board carrying a plurality of LEDs, and a light regulation mechanism. The frame and the circuit board are set opposing each other with the light regulation mechanism arranged therebetween to interfere with emission light from the LEDs. The emission light, after being interfered with, is projected outside the casing to realize lighting. The heat dissipation module is in physical engagement with the LED module to remove heat generated by the LEDs. As such, the LED street lamp is provided with a broader range of illumination angle and more uniform brightness, so that the same LED street lamp is applicable to various sites and the heat generated by the LEDs can be efficiently dissipated.

The invention discloses a backlight module and a light source diffusion plate applied in the backlight module, able to effectively make outgoing light brightness uniform, and the backlight module comprises multiple light sources; the light source diffusion plate comprises a transparent substrate and multiple optical structures, where the transparent substrate has a light incoming surface and a light outgoing surface; these optical structures are arranged on the light outgoing surface and each optical structure is sunken from the light outgoing surface to the inside of the transparent substrate and formed with a refractive inner convex surface inside the transparent substrate, where each refractive inner convex surface corresponds to one of the light sources; the smallest included angle between the edge of the refractive inner convex surface and the normal of the light outgoing surface is less than 30 deg, making an incident light emitted from the light source deviate from the normal of the refractive inner convex surface by refraction of the refractive inner convex surface.

The invention discloses an image processing method and device. The image processing method comprises steps that an original image is acquired; skin color detection on image pixels of the original image is carried out, and original skin color pixels of the original image are determined; an average value of characteristic parameter values of the original skin color pixels is calculated; according to a difference value of a preset standard average value and the average value acquired through calculation, a characteristic parameter value of each image pixel of the original image is corrected, the standard average value is acquired through calculation according to characteristic parameter values of standard skin color pixels of a preset standard image; an original image after correction is outputted. The method is advantaged in that image excessive exposure or darkness probability is reduced, a skin color of the image can be made to be closer to a natural real skin color of the user, and image quality is improved.

The invention discloses a backlight module and a liquid crystal display device using the backlight module. The backlight module comprises a baseplate, a plurality of first light-emitting units, a plurality of second light-emitting units and optical modulation elements, wherein the first light-emitting units are evenly distributed on the baseplate, and the second light-emitting units are adjacent to the first light-emitting units and are evenly distributed on the baseplate. The optical modulation elements are positioned on the first light-emitting units and the second light-emitting units, and are used for controlling the first light-emitting units and the second light-emitting units to emit light from different directions. Being acted on different time, the first light-emitting units and the second light-emitting units emit the light from different directions at different time by a power supply module. Light-emitting angles with different ranges can be designed according to the product of the invention.

A lighting device 12 of the present invention includes a light source 17, a chassis 14 housing the light source 17 and having an opening 14b for light from the light source 17 to pass through, and an optical member 15a provided so as to face the light source 17 and cover the opening 14b. The optical member 15a is formed of a member having a substantially uniform light reflectance, and has a first surface 30a facing the light source 17 and a second surface 30b opposite from the first surface 30a. A light reflecting portion 31 is formed on a portion of the second surface 30b that overlaps the light source 17. The light reflecting portion 31 reflects light from the first surface 30a. A light scattering portion 32 is formed on a portion of the optical member 15a that does not overlap the light source 17. The light scattering portion 32 scatters the light.

The invention relates to a light guide plate which comprises a transparent substrate, an incident surface and an emergent surface. The incident surface is formed on the transparent substrate, a step part used for accommodating light sources is formed at the edge of the incident surface, the emergent surface is formed on the transparent substrate and is opposite to the incident surface, and a reversed-frustum groove and an arc bulge arranged at the bottom of the reversed-frustum groove are formed on the emergent surface. In the light guide plate, the edge of the incident surface is provided with the step part, the step part and the middle part of the incident surface can be simultaneously provided with the light sources to form an incident mode coexisting a side light mode with a straight light mode, so that the utilization ratio of the light sources is improved and more uniform emergent light brightness is achieved; moreover, the reversed-frustum groove and the arc bulge arranged at the bottom of the reversed-frustum groove are formed on the emergent surface, the reversed-frustum groove is used for diffusing light rays, and the arc bulge is used for gathering the light rays to make polychromatic light rays fully mixed and decrease a glaring phenomenon. The invention also provides a light-emitting diode (LED) lamp containing the light guide plate.

The invention relates to a light-emitting diode (LED) street lamp energy-saving automatic control method and device. The device comprises a power supply, an automatic control circuit and an LED light source, wherein the power supply is a flyback power supply containing an AC protection circuit, a common-mode rejection circuit, a rectifier filtering circuit and a constant pressure constant currentcircuit which are connected successively; the automatic control circuit comprises a clock circuit, a SCM circuit and a switch circuit which are connected successively; and the LED light source comprises an LED light source 1 and an LED light source 2 which are arranged in a chip in parallel, the cathode is directly connected with the negative electrode of the power supply, the anode is connected with the automatic control circuit; and the automatic control circuit periodically and automatically connects the positive electrode of the power supply with the anodes of the LED light source 1 and the LED light source 2 according to the illumination brightness demands of streets to ensure that the two LED light sources work at the same time, or periodically, automatically and separately connectsthe positive electrode of the power supply with the anode of the LED light source 1 or the LED light source 2 to ensure that the LED light source 1 or the LED light source 2 works. The invention solves the problems of saving the energy and prolonging the service life of the LED street lamp, and has the obvious advantages of simple structure, good illumination quality for streets and no illumination dark space.

The invention discloses a detection device for geometric parameters of a contact line. The detection device includes a camera module (1), a light source module (2), a synchronous control unit (3) anda sensor (4). The camera module measures the geometric parameters of the contact line by employing a stereoscopic vision mode, each of linear array cameras is arranged at different positions on the same plane, and the spatial range of contact wires is separately covered with viewing fields of each of linear array cameras. A work mode of the light source module is synchronous strobe, the camera module and the light source module are synchronously triggered by a same pulse signal, and synchronous exposure of a camera and synchronous stroboscopic illumination of the light source are achieved. Thecamera module and the light source module are arranged in a line shape, and beam strongest sections formed by the LED light source module are in a same plane with linear array camera imaging chips. Advantages of the detection device are that the geometric parameters of the contact line are measured by employing the stereoscopic vision mode are measured by stereoscopic vision, and the detection precision is high; and the LED synchronous stroboscopic illumination mode is adopted, the brightness of fill-in light is high and uniform, the image quality is significantly improved, and power consumption of a system is greatly reduced.

The invention provides a lifting indoor light emitting diode (LED) illumination device. The device has lifting structure and is used for adjusting the height of an LED lamp. The device comprises a lamp pole, a lamp holder and the LED lamp, wherein the lamp pole is arranged on the lamp holder; the device also comprises a lifter and a quadrangular lifting frame; the quadrangular lifting frame comprises an upper movable joint, a lower movable joint and two middle movable joints positioned between the upper movable joint and the lower movable joint; the lifter is fixed on the lamp pole and connected with the lower movable joint of the quadrangular lifting frame through a lifting pole; the upper movable joint of the quadrangular lifting frame is fixed on the lamp pole, and the LED lamp is fixed on the first middle movable joint; the lamp pole is provided with a chute, the lower movable joint is connected with the chute through a sliding body, and the lifting pole drives the sliding body to move up and down in the chute; and a spring spool is arranged on the lamp holder, a reflective tape is wound on the spring spool, the pull-out end of the tape is fixed on the second middle movable joint, and the reflective surface of the tape faces the LED lamp.

The invention discloses a tobacco leaf collection box with high convenience in interior height adjustment. The tobacco leaf collection box comprises a box body, a rotating motor, a carrier plate, andguiding vertical rods, wherein a CCD camera is fixedly mounted in the center of the top of the box body; universal wheels are arranged at the edges of the bottom of the box body; the rotating motor ismounted in the center of the bottom of the box body in an embedded manner; screw rods are arranged in the box body in a penetrating manner; bearings are mounted at the joints of the screw rods and the box body; the rotating motor is connected with the screw rods through a driving wheel, transmission wheels and driven wheels; a fixed sleeve is fixed on the carrier plate; the guiding vertical rodsare arranged at the corners of the interior of the box body and penetrate the corresponding corners of the carrier plate; LED tubes are mounted on the interior walls of the box body; and a sealing door is arranged on one side of the box body. The tobacco leaf collection box with high convenience in interior height adjustment has the advantages that the height of the carrier plate in the collectionbox can be conveniently adjusted, so that tobacco image information collection is more accurate, and the information collection success rate is high.

The invention provides a large-angle light distribution illumination module which comprises two LED lamp tubes. Each LED lamp tube comprises a tube body, an LED light source plate arranged in the tube body and an LED light source. A microstructure is arranged on the inner wall of each tube body. The microstructures are arranged at light outlets of the LED light sources, so that out-going light of the light sources is converged through the microstructures. The two LED lamp tubes are parallel and are arranged in a co-plane mode, so that the included angle alpha between two surfaces of the LED light sources arranged on the two LED light source plates in the two LED lamp tubes is between 0 degree and 180 degrees. According to the technical scheme, the LED lamp tubes can be directly used for replacing a fluorescent tube, bright-dark fringes are removed when bat wing light distribution is generated, and brightness is even.

The invention discloses a light guide plate and a backlight module. The light guide plate is provided with a light-emitting surface, a bottom surface, a first incident light surface and a second incident light surface, wherein the bottom surface opposite to the light-emitting surface gradually closes to the light-emitting surface along a first direction far away from the first incident light surface and a second direction far away from the second incident light surface or gradually keeps away from the light-emitting surface along the first direction and the second direction; the first incident light surface and the second incident light surface are connected with the light-emitting surface and the bottom surface and are opposite to each other; the light guide plate comprises a plurality of first recess parts and second recess parts, which are configured on the light-emitting surface, wherein the first recess parts are online arrayed on a first shaft, the second recess parts are online arrayed on a second shaft, the first shaft line is parallel and adjacent to the second shaft line, the first shaft line is perpendicular to the first incident light surface and the second incident light surface, and the second recess parts are formed on a plurality of orthographic projections online formed on the first shaft and are alternately arrayed with the first recess parts.

A streetlamp comprises a lamp holder, a power source and a fixing part, wherein the lamp holder comprises an LED lighting plate, a light distribution plate and a heating panel which are fixed to one another; each light distribution unit corresponds to one single LED luminous body; the back of the LED lighting plate is in tight joint with the heating panel; strip-shaped radiating rods are respectively fixed on two sides of the lamp holder; a top cover of the street lamp is arranged at the front ends of the radiating rods, while a bottom cover of the street lamp is arranged at the rear ends of the radiating rods and a back cover of the street lamp is arranged in a way of covering the heating panel; a distance is reserved between the back cover and the heating panel; the radiating rods, the heating panel, the top cover, the bottom cover and the back cover enclose to form a radiating space; and the fixing part is arranged at the tail end of the bottom cover. The street lamp adopting the structure gives out light more uniform in brightness; and the heat generated by the lamp holder can be in direct heat exchange with external environment, and the obstruction of a housing for radiating of the lamp holder is avoided, so that the heat radiating efficiency of the lamp holder is improved.

This invention provides a kind of light-transmitting board with well-proportioned light-out intensity and simple producing process. The light-transmitting board includes a light-in plane, a light-out plane crossed with the light-out one, a underside corresponding to the light-out plane and several side planes. The underside clings to a reflecting style of aluminum foil holographic slice designed on the basis of the digital computer holograph and on which equipped several reflecting pels organs with several first rasters. Besides this invention also provides the producing method of the light-transmitting board.

The invention provides a double-line intelligent LED dimming power supply and relates to a power supply. The double-line intelligent LED dimming power supply detects instant connection and disconnection of a commercial power switch and adjusts the brightness of an LED lamp through an LED dimming control circuit. The double-line intelligent LED dimming power supply comprises a section switch circuit connected with an LED dimming integrated control circuit, and a power on-off detection circuit connected with the section switch circuit. The power on-off detection circuit is used for detecting on/off state of a working power supply of the LED dimming integrated control circuit and sending the state to the section switch circuit; and the section switch circuit selects different load circuits and connects the circuits to an analog dimming signal input end of the LED dimming integrated control circuit according to the on/off state of the working power supply to realize dimming of the LED lamp. Dimming of various LED lamps can be realized directly by utilizing an instantaneous switch to control the on/off state of a commercial power AC power without increasing extra light modulation signal lines.

A streetlamp comprises a lamp holder, a power source and a fixing part, wherein the lamp holder comprises an LED lighting plate, a light distribution plate and a heating panel which are fixed to one another; each light distribution unit corresponds to one single LED luminous body; the back of the LED lighting plate is in tight joint with the heating panel; strip-shaped radiating rods are respectively fixed on two sides of the lamp holder; a top cover of the street lamp is arranged at the front ends of the radiating rods, while a back cover of the street lamp is arranged in a way of covering the heating panel; a distance is reserved between the back cover and the heating panel; the radiating rods, the heating panel, the top cover, and the back cover enclose to form a radiating space; a frame is arranged in the street lamp and fixed between the two radiating rods; the fixing part is arranged on the frame; and a bottom cover is arranged at the rear ends of the radiating rods. The street lamp adopting the structure gives out light more uniform in brightness; and the heat generated by the lamp holder can be in direct heat exchange with external environment, and the obstruction of a housing for radiating of the lamp holder is avoided, so that the heat radiating efficiency of the lamp holder is improved.

The invention discloses a municipal lighting lamp structure. The municipal lighting lamp structure comprises a lamp shell body. Connectors are installed on the two side faces of the lamp shell body respectively and integrally connected with the lamp shell body. Cooling plates are vertically installed at the positions, close to the two inner side faces, of the lamp shell body respectively. Cooling chips are arranged in the cooling plates detachably connected to the lamp shell body. An insulating rubber sheet is installed between the two cooling plates, and the upper surface of the insulating rubber sheet is connected with the inner top surface of the lamp shell body in a sealing manner. LED chips are arranged on the insulating rubber sheet. Two lamp bases are installed on the inner bottom surface of the lamp shell body and fixed to the lamp shell body. Flashing lamps are arranged in the lamp bases. A control panel is installed between the two lamp bases. The flashing lamps and the LED chips are electrically connected with the control panel. The municipal lighting lamp structure has good cooling capacity and high insulating performance and is convenient to maintain for operators, good in lighting effect and uniform in lighting brightness, and the contact surface is good; and due to the design of the flashing lamps, the municipal lighting lamp structure has certain ornamental value and further beautifies city landscape.

The invention discloses a municipal lighting lamp convenient for heat dissipating. The municipal lighting lamp comprises a street lamp base, wherein round holes are formed in the periphery of the street lamp base, and a lamp post round hole is formed in the central portion of the street lamp base. A lamp post device is fixedly installed in the lamp post round hole, a solar cell device is disposedat a top end of the lamp post device, and a storage device is disposed at one third of the lower portion of a lamp post. A meteorological prediction device is disposed at one third of the lamp post, and a control device is arranged on the middle portion of the lamp post. The municipal lighting lamp has the advantages of simple structure and strong practicability.