49results about How to "Good light uniformity" patented technology

The invention relates to a manufacture method of a light-emitting diode packaging structure, which comprises the steps of: firstly, providing a loader and a light-emitting diode chip, wherein the light-emitting diode chip is configured on the loader and is positioned in a pit; secondly, filling a first packaging colloid in the pit, wherein the first packaging colloid covers the light-emitting diode chip, a fluorescent material is doped in the first packaging colloid; thirdly, carrying out first roasting to enable the first packaging colloid to be in a semi-curing state; and fourthly, filling a second packaging colloid in the pit, wherein the second packaging colloid covers the first packaging colloid.

The invention discloses a design method of a self-adaptive headlamp based on a fly's-eye lens. In the field of an automotive headlamp, an existing technology has the defects of insufficiently enough light control, low efficiency for solar energy utilization and the like. The self-adaptive headlamp comprises a projection part and a reflection part, wherein light rays emitted by an LED (Light Emitting Diode) are collimated by a paraboloid and a collimating lens, light beams are uniformly imaged on a digital micromirror by double rows of fly's-eye lenses and a convergent lens, and every row of fly's-eye lenses is composed of three small lenses of different shapes. The design method provided by the invention has the beneficial effects of being precise to control, many in realized lighting mode and good effect of various lighting mode; furthermore, long-distance light and short-distance light are separately realized, therefore the cooling difficulty can be reduced; in addition, uniform light spots with light and shade cut-off lines are formed in a digital micro-mirror by the fly's-eye lenses, therefore, light energy can be saved, and the efficiency for solar energy utilization can be improved; the double rows of fly's-eye lenses are served as a light equalization system, therefore short optical distance and good light equalization effect can be realized.

The invention provides a dodging lens, a backlight module using the dodging lens and a display device. The dodging lens comprises a containing part for containing a light source and a diffusion part, wherein a cavity chamber is internally arranged in the containing part; and a V-shaped slot is formed at the external surface of the diffusion part. The backlight module using the dodging lens comprises an optical film material and a light source device which is arranged at one side of the back surface of the optical film material; and the light source device comprises the dodging lens and a light source. The display device comprises the backlight module using the dodging lens. The dodging lens is different from a round second lens; the length of the dodging lens is determined according to different sizes; the shaping technology is simple; and the dodging effect is excellent. Because the backlight module using the dodging lens adopts the dodging lens provided by the invention, the light emitting effect is better, and the cost is greatly reduced. Because the display device adopts the backlight module provided by the invention, the quality of a product can be greatly improved.

The invention relates to a photochromic switching film comprising a substrate and a photochromic switching layer on the substrate, wherein the photochromic switching layer is produced by a composition including fluorescent powder, acrylate functional group oligomer, acrylate functional monomer, and optical initiator. The fluorescent powder is the sole powder in the composition. The thickness of the photochromic switching layer is from 100 to 300 micrometer. The invention also relates to a method for producing the photochromic switching film. The method comprises applying the composition including the photochromic switching film to the substrate and solidifying the composition in order to form the photochromic switching film. The photochromic switching film in the invention has excellent light dividing performance and a long service life without the use of photodiffusion particles and is not required to subjected to a solvent production process. The photochromic switching film is used in cooperation with a lighting device such as a light emitting diode and has environmental-friendly and energy-saving characteristics.

Various embodiments relate to reflectors comprising a tapered polyhedron including a plurality of substantially planar facets. The reflector may comprise an input end or aperture that is larger than an output end or aperture. The input aperture or end may have a different shape and/or orientation than an output end or aperture. Some embodiments relate to “developable” geometries made of substantially planar facets which, when folded, form a tapered hollow polyhedron that can efficiently receive light (e.g., from a primary reflector or lens) and direct light onto a photovoltaic cell.

The invention discloses a backlight module, which comprises a light guide plate, a point light source, a first brightening plate, and a second brightening plate. The light guide plate is provided with a rectangular pre-view area; the point light source is provided with an emergent surface; a reference line is crossed with the boundary of the rectangular pre-view area by 45 degrees; the normal line of the emergent surface is crossed with the reference line to form a first included angle; moreover, the first included angle is between positive and negative 18 degrees by taking the reference line as a datum line; the first brightening plate is arranged above the light guide plate, and is provided with a plurality of first prism structures; the first prism structures extend along a first extension direction; the first extension direction is crossed with the normal line of the emergent surface to form a second included angle; the second included angle is between positive and negative 25 degrees by taking the normal line of the emergent surface as the datum line; and the second brightening plate is arranged between the light guide plate and the first brightening plate.

The invention discloses a light equalizing method for an LCD photocuring 3D printer. The light equalizing method comprises the steps of acquiring an initial gray value of each pixel point in image data to be printed; acquiring a pre-stored light equalization compensation value, and performing difference calculation on the pre-stored light equalization compensation value and the initial gray valueto obtain a target gray value; and controlling an LCD to perform photocuring printing on the image data to be printed according to the target gray value. According to the method of the invention, theproblem in the prior art that photocuring 3D printing exposure is not uniform can be solved, and the printing quality is improved. The invention further correspondingly discloses a light equalizing device for the LCD photocuring 3D printer and the printer.

The invention relates to a diffuse reflection type landscape lighting and indicating module based on solar energy and LED arrays for a road, and a road landscape lighting and intelligent indicating system composed of the module. The landscape lighting and indicating module comprises a baseplate, a transparent hard panel, a transparent packaging material layer, a photovoltaic cell and an LED lightsource; the LED light source comprises a circuit board and an LED element arranged on the circuit board; the packaging material layer is arranged between the baseplate and the hard panel, and comes into close contact with the baseplate and the hard panel; the photovoltaic cell is packed in the packaging material layer; the side, adjacent to the packaging material layer, of the hard panel is provided with a groove, and the LED element is arranged in the groove, and configured so that the side, facing the module, of the LED element emits light; and the residual space in the groove is filled withtransparent encapsulating materials. The landscape lighting and indicating module has the advantages of simple and compact structure, high mechanical compression resistance, high waterproofness, uniform lighting, no glare, low cost, etc.

A lighting device for a vehicle lamp has a base, a substrate, a conducting rib and an LED module. The substrate is mounted in the base. The conducting rib is perpendicularly mounted on the base and has a first heat-dissipating surface and a second heat-dissipating surface opposite to the first heat-dissipating surface. The conducting rib provides two heat dissipating paths to increase the heat dissipating efficiency. The LED module is mounted on a distal end of the conducting rib and extends out of the base, and the LED module is electrically connected to the substrate. The LED module extends out of the base to accurately correspond to a reflection space around a lamp seat and improve the light-homogenizing effect of the vehicle lamp.

The invention discloses a light guide device and a network camera provided with the light guide device. The light guide device comprises a light guide substrate, a light source bearing part, a first through hole, and two first blind holes. The light source bearing part is used for bearing a light source and guiding the light emitted by the light source into the light guide substrate. The first through hole is adjacent to the light source bearing part and is arranged on the light guide substrate. The first through hole is used for allowing other elements to pass through. A connecting line between the first through hole and a light source bearing seat is defined as a first connecting line. The two first blind holes are symmetrically arranged on the two sides of the first connecting line. The first through hole is positioned between the two first blind holes and the light source bearing seat. The two first blind holes are positioned corresponding to the first region of the light guide substrate. The light is deflected when passing through the two first blind holes, so that the brightness of the first region is reduced. According to the technical scheme of the invention, due to the arrangement of blind holes diversified in shape and function, the brightness of regions higher in brightness is reduced, while the brightness of regions lower in brightness is improved. Therefore, the brightness difference between different regions is reduced. The light uniformity of the light guide device is improved.

The invention, which belongs to the technical field of optical films, in particular relates to a diffuse reflection type reflective film and a preparation method thereof. The diffuse reflection type reflective film is composed of a core layer and a surface layer or surface layers arranged at one side or two sides of the core layer. Each surface layer includes the following components: 80 to 90 parts of polyester resins, 5 to 15 parts of scattering particles, and 5 to 8 parts of antistatic agents. The preparation method of scattering particles is implemented as follows: an acid solution is added into a mixture of quartz powder and mica powder; after uniform mixing, the mixture is added into a jet device and thus accelerated processing is carried out; drying is carried out; and then a laserbeam is used for irradiation to obtain scattering particles. According to the invention, the surface layer of the reflective film is filled with scattering particles and the scattering particles are formed by insertion and welding of mica powder on the surface of the quartz powder, so that the excellent light scattering performance is realized. Therefore, the prepared reflective film has the excellent light scattering performance and is suitable for a short OD backlight module group with a good dodging effect, so that problems of light shadow existence and surrounding shadow existence are solved.

The invention discloses a high-efficiency end face light guide plate for a backlight module and a preparation process thereof. The high-efficiency end face light guide plate for the backlight module includes a light incident face, a light guide end face disposed opposite to the light incident face, a light exit face connecting the light incident face and the light guide end face, and a light guideface connecting the light incident face and the light guide end face; the light exit face is horizontal, the light guide end face is vertical, and the light guide face is inclined; the light incidentface includes an upper surface, a lower surface, and a light incident end face; one end of the light incident end face is connected to the upper surface, and the other end is connected to the lower surface; the other end of the upper surface is connected to the light exit face, and the other end of the lower surface is connected to the light guide face; and the upper surface includes a horizontalsection adjacent to the light incident end face and an inclined section away from the light incident end face. The light guide plate is prepared by a mold injection molding method. The light guide plate disclosed by the invention increases the diffusion angle and the diffusion range of the light, increases the scattering and light mixing effect, and has uniform light output and good effect; and the preparation process is non-toxic and high-efficiency, which is suitable for industrial production.

The invention provides a backlight module comprising a light box and at least one light tube, wherein the light box is provided with a reflecting structure capable of defining that the light box has a first area and a second area with different reflecting rates; the light tube is configured in the light box and has a high-voltage electrode end and a low-voltage electrode end; the second area corresponds to the high-voltage electrode end; the first area corresponds to the low-voltage electrode end and the reflecting rate of the first area is higher than that of the second area. The backlight module has good light emitting equality.

The invention mainly provides six methods and a device for LCD photocuring 3D printing light equalizing optimization compensation. The device comprises a control unit, an image shooting unit, an LCD screen, a light source and a semi-transparent unit. The semi-transparent unit covers the backlight surface of the LCD screen. Irradiating light emitted by the light source penetrates through an LCD screen transparent block matrix image to irradiate the semi-transparent unit and form a semi-transparent light spot matrix state image on the backlight surface of the LCD screen. The control unit shoots the light spot matrix state image through the image shooting unit to obtain an initial gray value and a gray compensation difference value of each calibration pixel coordinate point. Each calibration optimization gray value is obtained, and a full-screen optimization gray value is obtained through image scaling and an interpolation compensation algorithm to conduct photocuring printing; or, the gray compensation difference values are subjected to image scaling, interpolation values of all pixel gray difference values of the full screen are obtained through the interpolation compensation algorithm, then a full-screen gray value of a mask is subtracted from the interpolation values of all the gray difference values, a full-screen optimized gray value is obtained, and photocuring printing is conducted.

The invention relates to a luminous cloth curtain device. The luminous cloth curtain device comprises a piece of luminous curtain cloth provided with a plurality of light guiding fibers, a curtain cloth edge piece and a luminous assembly. The curtain cloth edge piece is arranged on one side of the luminous curtain cloth. The luminous assembly is arranged in the curtain cloth edge piece and can cast light towards the ends of light guiding fibers of the luminous curtain cloth. The luminous cloth curtain device can be applied to products such as an automobile sunshade curtain or an object shade curtain, except providing functions of shading sunlight or covering, the luminous curtain cloth can also make use of light rays emitted from the luminous assembly installed in the curtain cloth edge piece to glow the luminous cloth curtain through the multiple light guiding fibers of the luminous curtain cloth, and illumination and decorative effects are generated. The luminous cloth curtain devicecan also be changed, designed or customized by combining the light guiding fiber layout pattern of the luminous cloth curtain with coloured light of the luminous assembly, so that the purpose of product diversification is achieved.

The invention discloses a light equalizer, and a solar energy and electric heating mixing utilization system, and belongs to the solar energy utilization field. The light equalizer comprises a plurality of input light guides, a dispersion connection light guide, and a plurality of output light guides. A light output surface of each input light guide is connected with the output light guides through the dispersion connection light guide, and the dispersion connection light guide uniformly conducts the light outputted by the light output surface of each input light guide to the output light guides. The light equalizer, through the dispersion connection light, uniformly conducts the light outputted by the input light guides from the light output surface to the output light guides, so that no matter what the light intensity of the light received by the input light guides is, the light conducted to the output light guides is uniformly distributed, and the good light equalization effect is realized. The light equalizer is simple in structure, low in cost, applicable in the solar energy and electric heating mixing utilization system, and can effectively improve uniformity of the photovoltaic cell output voltage.

The invention discloses a cordyceps militaris culturing device with movable light. The cordyceps militaris culturing device with the movable light comprises a bacteria-free work table and a plurality of glass culture dishes; the glass culture dishes are respectively arranged on the bacteria-free work table; an annular railway is arranged above the work table; a micro electric vehicle is arranged on the annular railway; a charging type storage battery is arranged above the micro electric vehicle; a bent rod which extends to the position below the annular railway is arranged on the micro electric vehicle; a lamp holder is arranged at the bottom of the bent rod; a lighting lamp is arranged below the lamp holder. Through the mode, according to the cordyceps militaris culturing device with the movable light disclosed by the invention, electric power is provided for the micro electric vehicle and the lamp holder by utilizing the storage battery, so that the micro electric vehicle drives the lamp holder to move along the annular railway slowly; 360-degree lighting of the lighting lamp around the glass culture dishes is realized; individual offset of cordyceps militaris is reduced; the vertical growth of a cordyceps militaris individual is benefited; the lighting uniformity is high; the culturing qualification rate of the cordyceps militaris is high.

The invention aims to design a strip-shaped distributed uniform light source, namely a lateral emergent light source formed by using a prism to make single beam of collimation laser form a virtual double-way light source and then adjusting the light source uniformly distributed in a strip-shaped zone. The light source can be used for a laser thermally induced hemostasis scalpel, namely the strip-shaped distributed light source irradiates a metal strip and then utilizes a photothermal conversion effect to further uniformize temperature and achieves tissue coagulation, cutting and other operations in a clinic endoscope environment. Compared with energy devices such as high-frequency electrotomes and ultrasonic hemostasis scalpels, the laser hemostasis scalpel has lower leakage current and higher coagulating speed, accordingly has higher operation safety and higher hemostasis and cutting speed, and can be also used in other illumination systems having stricter system volume requirements and needing to achieve lateral uniform illumination.