68results about How to "Large luminous surface" patented technology

A light emitting device includes a substrate having a first surface and a second surface not parallel to the first surface, and a light emission layer disposed over the second surface to emit light. The light emission layer has a light emission surface which is not parallel to the first surface.

A light beam is deflected by refraction and total internal reflection through a first prism, and projected through a first lens onto a scene that is to be scanned. The prism rotates, which varies the deflection angle and scans the beam across the scene along a scan line. Preferably, the successive side surfaces of the prism have different tilt angles relative to the rotation axis, so as to respectively deflect the beam in different deflection planes which cause successive scan lines of the beam across the scene. The emitted beam gives rise to a reflected beam from the scene, which is received through a second lens and deflected onto a photodetector through a second prism congruent to and rotating synchronously with the first prism. This apparatus is suitable as a laser scanning device for an object recognition system or a spacing distance regulation system of a motor vehicle.

A light emitting device includes a substrate having a first surface and a second surface not parallel to the first surface, and a light emission layer disposed over the second surface to emit light. The light emission layer has a light emission surface which is not parallel to the first surface.

The light source, comprises an evacuated container having walls, including an outer glass layer (23) which on at least part thereof is coated on the inside with a layer of phosphor (24) forming a luminescent layer and a conductive layer (25) forming an anode. The phosphor (24) is excited to luminescence by electron bombardment from a field emission cathode (40) located in the interior of the container. The field emission cathode (40) comprises a carrier having a diameter in the mm range. At least a portion of the surface of the carrier is provided with a conductive layer having surface irregularities in the form of tips, having a radial extension being less than about 10 μm. Due to the geometry and the tips, the electric field is concentrated and amplified at the field emission surface.

The invention provides a low temperature resistant halogen-free flame-retardant light scattering polypropylene composition and a preparation method thereof. The composition comprises the following components: 72-92.7% of PP resin, 2-5% of flexibilizer, 3-5% of biphasic solvent, 1-10% of halogen-free fire retardant, 1-5% of fireproof liquid oil, 0.1-2% of light scattering agent, 0.1-0.5% of light stabilizing agent, and 0.1-0.5% of anti-oxidant. The composition is prepared by the following steps: baking the PP resin at 70-90 DEG C with an air blast baking oven for 10-14 hours, and controlling the water content below 0.02%; stirring the baked PP resin, the flexibilizer and the biphasic solvent and the liquid fireproof oil according to a proportion in a feed mixer for 3-5 minutes; adding the light scattering agent, the light stabilizing agent and the anti-oxidant, and stirring for 2-4 minutes; adding the halogen-free fire retardant, stirring for 2-4 minutes, and for uniformly mixing the components together; adding the fully mixed materials into a double screw extruder for carrying out extrusion granulation. The low temperature resistant halogen-free flame-retardant light scattering polypropylene material provided by the invention has the advantages of high light transmittance, high haze, good flame retardation performance and impact resistance.

A dental cleaning appliance includes a fluid reservoir for storing working fluid, a nozzle for delivering working fluid to the teeth of a user, a light source for illuminating the fluid reservoir and a control circuit for activating the light source to generate an alert which is conveyed to the user through the illumination of the fluid reservoir.

The invention relates to a light aging resistant photodiffusion polycarbonate composite material and a preparation method thereof. The composite material is prepared from the following raw materials in parts by weight: 700-900 parts of polycarbonate aggregate, 100-300 parts of polycarbonate powder, 0.5-5 parts of photodiffusion agent, 2-8 parts of light stabilizer, 1-5 parts of antioxidant and 0.5-2 parts of processing agent. The light aging resistant photodiffusion polycarbonate composite material is prepared from the raw materials in high-speed mixing, extruding and pelletizing manners. The light aging resistant photodiffusion polycarbonate composite material disclosed by the invention has the advantages of being good in processing formability, good in light aging resisting performance, good in light transmittance and haze, and the like.

The invention provides an LED (light-emitting diode) epitaxial wafer which comprises a substrate, a first porous structure layer formed on the top layer of the substrate, a second porous structure layer formed on the first porous structure layer and an LED structure layer formed on the second porous structure layer, wherein the porosity and aperture of the second porous structure layer are smaller than those of the first porous structure layer, and the LED structure layer at least comprises a first-type semiconductor layer, a luminous layer and a second-type semiconductor layer. An LED structure which has the characteristics of large porosity and great thermal mismatch between an epitaxy on porous silicon and a Si (silicon) material is adopted, thereby enabling a weak porous silicon layer to deform partially, releasing thermal mismatch stress, ensuring the integrity of the epitaxial LED structure, forming the large-size epitaxial LED structure, and improving the quality of an epitaxial crystal of the LED structure layer through the second porous structure layer.

The invention discloses a light-transmitting inorganic light diffusion agent which is characterized by comprising the following components by weight percent: 85%-94% of cryolite, 3%-8% of pyrophyllite, 2%-5% of kaolin, 0.5%-1% of potassium feldspar and 0.2%-1% of brucite. A fluidized bed is coated with cryolite, a powdery material is mixed with heated hot air in a rotational-flow dynamic calcining furnace, the specific surface of the cryolite is instantly calcined and molten and is spheroidized, and the surface of cryolite is covered with a reflection layer, so that cryolite has good light transmitting and reflectivity. The light diffusion agent is high in micro-particle sphericity and good in flowing dispersity, can be used at a high temperature of 800 DEG C or above, has excellent high temperature resistance, has a reflectivity different from most transparent resins, can be uniformly dispersed in resin so that a point light source is changed into an area light source, light transmitting and dodging effects are achieved, and therefore high light transmittance is ensured and good haze is achieved.

The invention discloses an LED bulb lamp which comprises an optical lens, a heat dissipating body, a driver, an LED light source, a lamp head, and a lamp seat. The LED bulb lamp is characterized in that the optical lens is arranged at one end of the heat dissipating body, the lamp seat is arranged at the other end of the heat dissipating body, the driver is arranged in an inner cavity of the lamp seat, the outer end of the lamp seat is connected with the lamp head in a riveting mode, and the LED light source is arranged on the inner surface of the heat dissipating body at the lower end of the optical lens. The LED bulb lamp can greatly improve luminance, enables a main illuminating face to be clearer in focus, increases a light illuminating area, increases a lighting face, eliminates glare, improves visual effect, and eliminates visual fatigue. The LED bulb lamp saves energy, protects the environment, and is long in service life and free of stroboflash.

The invention discloses an open type photoelectric effect experimental apparatus and an operation method thereof. The open type photoelectric effect experimental apparatus comprises an LED light source, a plurality of optical filters of different colors, an aperture, a convex lens, a concave lens, a sample bench, and a photoelectric tube. The LED light source is disposed on a left side wall of a sealed housing, and the middle part of the housing is provided with a baffle. The baffle is provided with a light transmitting hole aligned with the LED light source. The plurality of optical filters are disposed on a rotating disc, and every optical filter is guaranteed to be aligned with the light transmitting hole, after the rotating disc is rotated. The rotating disc is rotatably disposed on the right side of the baffle, and the aperture, the convex lens, and the concave lens are, from left to right, sequentially disposed on a sleeve, and the centers are guaranteed to be aligned with the light transmitting hole. The right end of the sleeve is connected with an outer side wall of a sample testing cavity, and the sample bench is disposed in the sample testing cavity. The right side of the sample bench is provided with the photoelectric tube. Light energy space distribution difference is small, linear relation is good, and experiment effect is good. By comparing with a mercury lamp, non-toxic performance is provided. Voltage is low, energy is saved, a heating value is small, thermal radiation is reduced, and testing influences are small.

The invention discloses a total-reflection honeycomb backlight LED illuminating lamp of a refrigerator and the refrigerator using the illuminating lamp. The illuminating lamp comprises a plurality of surface mounted LED lamps arranged on the front surface of a lamp panel, light emitting surfaces of the LED lamps cling to one side of a light guide plate, reflective paper is pasted on the other three sides of the light guide plate, a honeycomb engraved groove is engraved on one surface of the light guide plate, a reflective plate is arranged on the side of the light guide plate with the engraved groove, the lamp panel, the light guide plate and a reflective plate are connected onto a refrigerator clamp, and a closed cavity is formed between the light guide plate and the reflective plate. The illuminating lamp has the advantages of safety, low power consumption, low heating value, large light emitting surfaces, and soft and uniform light, has no extremely dense area, and can bring fresh and bright use experience for users in both daytime and nighttime.

A warning lamp used in lane change at blind zone of a vehicle includes a light source and a light guide including a light entrance surface, a first reflective surface, a second reflective surface, and a light exit surface, the light entrance surface is located above the light source so that the light emitted from the light source is converted to parallel light through the light entrance surface, said first reflective surface is arranged aslope above the light entrance surface, sides of s the first reflective surface are provided with the second reflective surface and the light exit surface, respectively, the first and second reflective surface are provided with total reflection stripes configured so that said parallel light is totally reflected to the second reflective surface through the first reflective surface and then totally reflected by the second reflective surface to said light exit surface to form uniform warning light.

The invention relates to an illumination device (1) comprising at least one reflector (8) and at least one light generating unit (2), wherein the reflector (8) is designed to and arranged for reflecting at least a portion of the light emitted by the at least one light generating unit into a spatial region (UH) that cannot be directly illuminated by said light generating unit, and the at least one light generating unit (2) comprises at least one lighting region (5a, 5b) having an emission characteristic that is substantially uniform in a circumferential direction of the illumination device (1). The invention further relates to a method for producing an illumination device according to claim 12, wherein the method comprises at least the following steps: forming a bulb (49) which comprises an opening (50) at the tip (51) thereof, and which is in particular shaped as a conic segment, so that said bulb curves inward in the region of the tip (51) thereof; mirroring the bulb (49) at least in a region of the tip (51) thereof; and closing off the opening (50).

The invention relates to a capillary electrophoresis-chemiluminescence detection interface device and a preparation method thereof. The interface device comprises organic glass, a reaction capillary and an isolation capillary, a transverse through channel and a longitudinal luminescence detecting window are arranged in the middle of the organic glass, the reaction capillary is arranged in the transverse through channel, at least two positioning gaskets are arranged between the outer wall of the reaction capillary and the inner wall of the transverse through channel, one end of the isolation capillary is inserted into a feeding end of the reaction capillary while the other end of the isolation capillary penetrates through a rubber plug which is mounted on a corresponding end port of the transverse through channel, and a luminescence reagent channel and an electrode mounting channel are further arranged on two radial sides of the isolation capillary. The capillary electrophoresis-chemiluminescence detection interface device is low in preparation cost, an interface is small and exquisite, and the device is easy and convenient to operate, can effectively solve the problems of lowering of isolation efficiency, sensitivity and stability and the like due to introduction of CL (chemiluminescence) reagent, has high CE (capillary electrophoresis) isolation efficiency and high CL detection sensitivity and can be used for analysis of biological samples, food and environmental samples.

The invention relates to an LED lamp tube which comprises a lamp shell and an LED substrate arranged in the lamp shell and used for carrying LED lamp beads. The LED substrate comprises a body with two ends and two radiating parts formed through outward extension from the two ends of the body respectively, the body and the radiating parts are formed integrally, the LED lamp leads packaged in an integrated mode are fixedly arranged on the body, the LED lamp leads are arranged facing to the center of the lamp shell, the radiating parts extend upwards from the side portion of the body along the inner wall of the lamp shell, and the outer side walls of the radiating parts are attached to the inner wall of the lamp shell. The LED lamp tube is good in radiating capacity, convenient to assemble, easy to design and suitable for full-automatic assembly lines.

The invention provides a plant lighting system for a sunlight greenhouse and an arched shed, which comprises a light-emitting film laid on the inner wall surface of a shed body, the light-emitting film comprises a flexible circuit board and a plurality of LED lamp beads arranged on the flexible circuit board, a layer of soft power grid used for deinsectization is arranged on the side, close to the LED lamp beads, of the light-emitting film, and a winding assembly used for winding the light-emitting film and an unwinding assembly used for unfolding the light-emitting film are arranged in the shed body. According to the plant lighting system for the sunlight greenhouse and the arched shed, the winding assembly and the unwinding assembly are arranged on the light-emitting film, when no sunlight exists and light supplementing is needed, the plant lighting system is started, and the light-emitting film is spread through manual or electric traction for manual light supplementing; when sunlight exists, the plant lighting system is turned off, a coil spring is used as power to wind the light-emitting film onto the winding roller, the problem that in low facility agriculture, the illumination uniformity is poor due to the fact that lamps are not hung high is solved, and after illumination is uniform, the quality of agricultural products is uniform.

The invention relates to the technical field of functional polymer materials, and provides a light-diffusion PP material and a preparation method thereof. The problem that since a conventional PP material has poor thermal stability and weak impact resistance, the utilization rate of the conventional PP material is low in the lamp industry is solved. The light-diffusion PP material comprises the following components: in parts by weight, 90-98 parts of polypropylene, 0.2-1 part of a light-diffusing agent, 0.05-3 parts of a flame retardant, 0.05-1 part of an antioxidant, 0.05-1 part of a lubricant and 0.5-5 parts of an anti-UV agent. The light-responsive gel factor compounded light-diffusing agent and the green environment-friendly flame retardant are utilized, so that evener distribution, better fluidity, higher impact resistance and higher light sensing regulation ability of the light-diffusion PP material system are achieved; and the modified light-diffusion PP material has better thermal stability, the softening temperature can reach 105 DEG C, the modified light-diffusion PP material has better anti-aging performance, and the yellowing performance can still be ensured under irradiation of high-intensity ultraviolet.

The present invention puts forward an LED arch-shaped lens forming method capable of manufacturing an LED lens of which the surface is in an arch shape. The LED arch-shaped lens forming method comprises the following steps: S1, preparing an LED lens mold, wherein a part, used for injection of a mixture of fluorescent powder and molding gel, of the mold is in a circular shape at the bottom, and is gradually expanded upwards in an arc shape, an opening at the top end is in a circular shape, and the edge of the opening is provided with an upward projection; S2, injecting the mixture of fluorescent powder and molding gel into the LED lens mold; and S3, enabling the mixture of fluorescent powder and molding gel to form a raised LED arch-shaped lens under the action of surface tension. An LED arch-shaped lens or hemispherical lens manufactured by adoption of the LED arch-shaped lens forming method has a larger light-emitting surface, and lights emitted by the LED arch-shaped lens or hemispherical lens are intersected with each other, thus the lights emitted integrally have better color consistency.

The invention discloses an LED lighting device which comprises a rectangular and plate-shaped light emitting panel, and a pair of freely rotating plates of the same shape which are respectively connected to an upper edge and a lower edge of the light emitting panel, wherein the light emitting panel comprises a light emitting surface arranged with a plurality of light emitting diodes, and the freely rotating plates can freely rotate around a shaft extending along a horizontal direction. The freely rotating plates, when rotating to a same direction, can overlap the light emitting panel to cover the light emitting surface, and when rotating to the other direction, can unfold to expose the light-emitting surface. According to the invention, a relatively wide light emitting surface can be formed, so as to facilitate carrying and rapid setting up, and the light emitting surface may not be damaged during carrying.

The invention provides a field emission light source assembly comprising a flexible substrate and multiple field emission light sources which are fixed on the flexible substrate according to the preset arrangement sequence. When the field emission light source assembly needs to be applied to a lamp, the flexible substrate is unfolded so that the multiple field emission light sources are arranged in the same plane, and thus the light emission surface of the overall field emission light source assembly is enlarged. The size of the light emission surface of the field emission light source assembly equals to the sum of the size of the light emission surfaces of the multiple field emission light sources so that the size of the light emission surface of the single field emission light source does not need to be quite large in manufacturing, and thus the preparation process is simplified and cost is effectively reduced. Besides, the substrate is bent during transportation so that the multiple field emission light sources are mutually overlapped, and thus volume of the aforementioned field emission light source assembly is reduced, and carrying and transportation are facilitated.