34results about How to "No spot" patented technology

The invention relates to an LED lamp tube-shaped light equalizing device. The LED lamp tube-shaped light equalizing device comprises a lampshade, a lamp holder, a lamp panel, lamp beads, a main control board, a main board support, a PC transparent tube, a pore membrane, a light mixing membrane and a driver board; the lamp panel is fixed at the joint of the cylindrical lampshade and the lamp holder; the lamp beads include white lamp beads and RGB lamp beads, all of which are evenly fixed on the lamp panel; the main control board is mounted on the main board support at the top of the lampshade and connected with the lamp board by use of an FFC wire; the upper part of the PC transparent tube is clamped and fixed with a groove formed in the bottom of the main board support, while the lower part of the PC transparent tube is connected with the lamp panel to support up and down. The LED lamp tube-shaped light equalizing device is in a bottom light emitting form without light spot, and the brightness of the white light is uniform at the top and the bottom of the whole cylindrical lampshade; besides, the number of the used lamp beads is small so that the production cost can be greatly reduced; the LED lamp tube-shaped light equalizing device is low in power, energy-saving and environmental friendly, and meanwhile, capable of achieving optical effects that cannot be achieved in other light emitting manners.

The invention provides an optical film for enhancing reflection. The optical film comprises two side surfaces which are perpendicular to the thickness direction of the optical film and are arranged back to back, and the two side surfaces are respectively marked as a light emergent side and a light incident side; a plurality of micro-lens structures are arranged on the light emitting side to form a reflecting layer with a certain thickness, and the height of the micro-lens structures is the thickness of the reflecting layer; and a film layer between the light incident side and the reflecting layer is used as a transmission layer; a surface, relative to the light-emitting side, of the micro-lens structure is recessed to form a cavity used for being filled with an air medium, and the refractive index of the optical film is larger than that of air, so part of light entering the optical film from the light-incident side can be reflected by the micro-lens structure. By arranging the reflecting layer with the concave micro-lens structure, part of light rays incident from the light incident side of the optical film can be totally reflected, if a reflecting element is arranged on the light incident side of the optical film, the light rays can be reflected for multiple times between the reflecting element and the optical film, and the optical light mixing distance of the light rays is greatly increased.

The invention relates to a near ultraviolet or ultraviolet excited LED light-emitting device which is composed of a packaging substrate, a near ultraviolet or ultraviolet LED chip and mixed fluorescent powder glue which can be used to effectively absorb light emitted by the LED chip and emit red, green and blue light. The light-emitting peak wavelength of the LED chip is in the range from 380nm to 420nm. The red fluorescent powder is the CaAlSi(ON)3: Eu system. The green fluorescent powder is the SiAlON: Eu system. The blue fluorescent powder is the (Sr, Ba)10(PO4)6Cl2: Eu system. Most of the light generated by the near ultraviolet or ultraviolet LED chip is used for exciting the fluorescent powder, so the color purity of the light only depends on the color purity of the fluorescent powder, and a high color rendering index CRI which is greater than 95 can be obtained, wherein color rendering indexes from R1 to R15 are all greater than 90. According to the invention, the made white LED device has advantages of good spectrum continuity, natural light proximity, that is the solar spectrum, good color temperature uniformity and no light spot.

The present invention is characterized by that in the front of LED light source a transparent plastic plate is placed, on said transparent plastic plate several through holes are cut, and formed into array light rod, the light rod is the through hole on the transparent plastic plate, its number and position are correspondent to the LED light source, a connection component is used for connecting the transparent plastic plate and light source seat into one body.

An embodiment of the invention relates to an LED encapsulation structure and an encapsulation method. The LED encapsulation structure comprises a substrate, an LED chip fixed to the substrate, a fluorescent glue layer formed on the outside of the LED chip and an optical structure layer formed on the outer side of the fluorescent glue layer in a pressing injection mode, wherein the surface of the optical structure layer undergoes atomization processing. The surface of the optical structure layer undergoing the atomizing processing by means of an atomization film is uneven, so that diffuse reflection of an LED light source is generated. Therefore, light colors are uniform, light spots caused by uneven light colors are avoided, and luminous efficacy and reliability are high.

The invention relates to the technical field of curved surface LEDs, and specifically relates to a preparation method of a novel WiFi intelligent control type curved surface LED display device. The preparation method comprises the following specific steps: S1, determining a project product to be of a separated module structure, and carrying out system structure design on an LED module; S2, carrying out circuit design on an infrared module, a WIFI module and an LED module; S3, after mold processing is completed, preparing a shell piece through an injection molding process; S4, carrying out SMTtechnology assembly on an LED lamp panel and a main control panel; and S5, researching and determining an assembly technology, and carrying out integral assembling on each component. A white LED lampbead is taken as a light source, multi-colored display is realized by printing different colors of printing inks on a diaphragm, and voltage difference among different colors of lamp beads is solved perfectly. A display module (integrated infrared module), a main control module and a WIFI module are separated, the interference among different signals during integration on the same PCB is reduced,and simultaneously, the exchange of each functional module is facilitated.

The invention relates to a white light LED light mixing mode and a prepared lighting device, and belongs to the LED technical field; the white light LED light mixing mode comprises an LED chip, and mixes the light of single phosphor luminescence excited by the LED chip; the LED chip is coated by the single phosphor or transparency packaging glue so as to form package bodies of different colors; the package bodies are welded on a PCB plate with a printing circuit according to certain rules; a multi-branch circuit can control the various color LED luminous intensity; the method can adjust the current output proportion of multi-path drive power supplies, thus realizing color temperature continuous changes of the white light mixed by 4 colors; the lighting device can realize the continuous adjustable output white light with the color rendering index Ra>=95, R9>=90, and color temperature and spectrum from 2700 to 7000K. In addition, the InGaN or GaN series semiconductor chip with stable performance and highly stable phosphor are employed, thus greatly improving the lighting device reliability.