62results about How to "High light efficiency" patented technology

This utility model discloses a reflector cup, including a body with a light outlet at the top and a light inlet at the bottom. Along the direction from the light inlet to the light outlet, a line connecting the two endpoints of the reflective surface curve intersects the curve of the body. The optical structure between the light inlet and the intersection point is a first reflective surface, and the optical structure between the intersection point and the light outlet is a second reflective surface. The first reflective surface at least has the function of adjusting the light emission angle, and the second reflective surface at least has the function of uniformizing the light. This application's design, where the straight line connecting the endpoints of the reflective surface curve intersects the curve of the reflector cup, improves the uniformity and efficiency of the light spot, and alleviates glare. Even when used with lenses, the surface of the lenses can maintain uniform brightness without causing glare, and it also reduces stray light caused by Fresnel reflection from the lenses.

The utility model relates to the field of lighting, and discloses an LED light source device and lighting equipment. The white ink layer is positioned on the upper surface of the substrate; mounting holes are distributed in the white ink layer; the LED chip is positioned on the upper surface of the substrate and is electrically connected with the substrate through the mounting hole; the white glue reflecting layer is positioned on the surface of the white ink layer and is positioned around the LED chip; and the fluorescent colloid is positioned on the surface of the white glue reflecting layer and covers the LED chip. The white glue reflecting layer is located on the upper surface of the white ink layer, and the white glue reflecting layer has the characteristic of high temperature resistance, is not prone to discoloration at the high temperature and ensures long-term lighting effect stability, so that a good reflecting effect can be achieved on light emitted by the LED chip, the lighting effect of the LED light source device is improved, and the service life of the LED light source device is prolonged. And the problems of color temperature dispersion and poor color consistency can be solved, and the chromaticity stability is improved.

The embodiment of the application discloses a high-definition zoom lens applied to micro-nano high-precision 3D printing, comprising: coaxially arranged lens groups with positive light angles, a diaphragm, a light splitting device, a galvanometer, a protective glass and an imaging surface, wherein the lens groups comprise coaxially arranged first group lenses and second group lenses in sequence, and the diaphragm is located between the first group lenses and the second group lenses. Through the high-definition zoom lens, the printing pixel size can be continuously changed, the lens distortion is small, the relative luminance is high, the light efficiency is high, and the use requirements are met.

The utility model provides an RGB (Red, Green and Blue) matrix independent optical module. The RGB matrix independent optical module comprises a lateral light-emitting direct type lamp bead, a miniature light guide type lens and a grating partition groove, the lamp beads are provided with independent lamp grooves and reflecting walls, RGB independent light emitting is achieved, and mutual interference of halo is avoided; the light guide type lens guides and uniformly distributes lateral light energy, and the surface of the lens is provided with an optical microstructure to optimize the light emitting angle and brightness. And the grating partition grooves realize light energy convergence and light isolation through the reflective material layer. The module can reduce the number of LEDs and power consumption, improves heat dissipation and display performance, supports modular assembly, and is suitable for constructing an LED display screen which is flexible in size, efficient and energy-saving.

The utility model relates to a kind of surface light emitting optical systems, including LED light source component, support and at least one light guide plate, the LED light source component and any light guide plate are installed on the support;Any the end face of the light guide plate is light entrance, and the side surface is respectively light exit and back surface opposite to light exit;Multiple recesses in sheet shape are arranged on the back surface;The light emitted by the LED light source component can enter light guide plate from light entrance, and uniform emission is carried out to light exit after the concave reflection of the recess, then uniform emission is carried out from light exit;Compared with prior art, the utility model uniform emission is carried out to light exit, and avoids part of light loss, improves light efficiency, reduces energy consumption.

The utility model provides a lamp, and relates to the field of lighting appliances. The lamp comprises a shell, a light blocking piece and an optical lens. The shell is provided with a containing space and an opening, and the light blocking piece is arranged in the opening. The light blocking piece is provided with a light through hole communicated with the opening, at least part of the structure of the light blocking piece and the shell are arranged in a spaced mode to form a light-transmitting gap, and the light-transmitting gap is communicated with the opening or the containing space. The optical lens is arranged in the shell and comprises a light inlet part, a first light outlet part and a second light outlet part, and the light inlet part and the first light outlet part are sequentially arranged in the extension direction of the optical axis of the lens. The first light-emitting part is provided with a first light-emitting surface, and the first light-emitting surface covers at least part of the light through hole. The second light-emitting part is connected to the first light-emitting part, the second light-emitting part is provided with a second light-emitting surface deviating from the optical axis, and light emitted by the second light-emitting part penetrates through the second light-emitting surface and is exposed to the outside through the light-transmitting gap. By arranging the lamp, light can be emitted from the first light-emitting surface and the second light-emitting surface at the same time, and the light-emitting range is large.

The utility model provides a kind of low-power MiniLED backlight control system, it is related to LED backlight technical field, including light bar, the both ends of the light bar are provided with connecting head, multiple electric connecting pins are provided in the inside of two connecting heads, multiple installation clamping grooves are set in the upper end of the light bar, multiple lamp holders are clamped in the inside of multiple installation clamping grooves, multiple electrode pieces are provided in the left and right sides of the lower end of multiple installation clamping grooves, multiple control chips are connected to the lower end of the light bar, multiple control chips are respectively located in the lower end of multiple installation clamping grooves, and electrically connected with the two electrode pieces of the lower end of installation clamping groove, and multiple control chips are electrically connected with multiple electric connecting pins of the front and rear sides, the utility model is provided with multiple-pin connecting head in the both ends of light bar, lamp holder is clamped with light bar by installation clamping groove, electrode piece is electrically connected with control chip, so that lamp holder can be individually repaired and replaced, reduce maintenance cost, and support quick assembly and flexible expansion.

The utility model discloses a kind of high space utilization and low dazzling lens, including lens body, several circles of lens ring are integrally formed on lens body, lens ring includes several sequentially connected lens parts, the light-out surface side of lens part is diamond convex structure, the light-in surface side of lens part is hemispherical groove structure.The lens body of the utility model integrally formed with several circles of lens ring, lens ring includes several sequentially connected lens parts, the light-out surface side of lens part is diamond convex structure, form shading angle between the diamond convex structure of adjacent two lens parts, diamond convex structure of adjacent lens part can be absorbed and reflected to large-angle light, so as to reduce the light intensity of large-angle light, make UGR reduce, realize low dazzling effect.

This application discloses an LCOS optical system and an AR device, relating to the field of augmented reality technology. The LCOS optical system includes an illumination module and an imaging module disposed on the light-emitting side of the illumination module. The illumination module includes a light source, a first collimation module, and a light-uniforming element. The imaging module includes a beam splitter, an LCOS device, and a projection lens, with the first collimation module, the light-uniforming element, and the beam splitter arranged sequentially along the light-emitting direction of the light source. The light beam emitted from the light source is collimated by the first collimation module and uniformly irradiated by the light-uniforming element before entering the beam splitter. After passing through the beam splitter, it enters the LCOS device, where the LCOS device modulates the beam into image light carrying image information. This image light is then transmitted to the projection lens through the beam splitter to project an image. This LCOS optical system and AR device can reduce the illumination space, contributing to the miniaturization of the LCOS optical system and AR device.

The invention discloses a light-emitting element, and the element comprises an LED chip which is provided with a first surface, a second surface opposite to the first surface, and a side wall connected with the first surface and the second surface. The wavelength conversion layer is at least arranged on the first surface of the LED chip; the electrode expansion structure is arranged on the second surface of the LED chip; the packaging layer at least surrounds the LED chip, the wavelength conversion layer and the electrode expansion structure; and at least one functional structure module selected from the group consisting of the following structure modules. The method can flexibly adapt to different application scenes.

The utility model relates to the technical field of LED packaging, specifically relates to a kind of patch LED lamp pearl support structure, including support body, bowl cup, positive electrode conducting terminal, negative electrode conducting terminal, through-hole etc.The utility model overcomes the deficiency of prior art, by setting up metal filling through-hole on conducting terminal, establishes the efficient vertical heat dissipation path from chip to PCB board, effectively reduces the junction temperature of LED chip, improves luminous efficiency and life, the slope structure of bowl cup is combined with the high reflectivity coating in it, can more effectively reflect light and export, reduces internal absorption, improves brightness, metal through-hole enhances the embedding strength and combined tightness of metal terminal and plastic body, reduces the stress generated due to thermal expansion and contraction, improves the air tightness and anti-mechanical impact ability of product.

This invention relates to a highly uniform optical waveguide structure, comprising a waveguide substrate, an imprinted adhesive layer disposed on the waveguide substrate, an integrally formed imprinted grating structure disposed on the imprinted adhesive layer, and a high-refractive-index dielectric layer disposed on the imprinted grating structure. The waveguide substrate is sequentially divided into a coupling-in region, a transition region, and a coupling-out region along the beam propagation path. The grating teeth of the imprinted grating structure located in the transition region and / or the coupling-out region are inserted into the high-refractive-index dielectric layer, and the refractive index of the high-refractive-index dielectric layer exceeds the refractive index of the imprinted grating structure. This invention solves the problem of low diffraction efficiency caused by the excessively low refractive index of the imprinted adhesive in optical waveguide structures fabricated by nanoimprinting, and has the advantages of improving the optical efficiency and uniformity of the optical waveguide structure.

The present application relates to a kind of micro display devices, including drive backplate, first electrode contact and second electrode contact of opposite polarity are provided on drive backplate;Pixel layer is stacked above drive backplate, and sub-pixel is provided in pixel layer;The bottom of each sub-pixel is electrically connected to corresponding first electrode contact by bottom conductive layer respectively, and the top of multiple sub-pixels is electrically connected to corresponding second electrode contact by a shared top conductive layer;The periphery of sub-pixel is provided with corresponding light isolation component, and the light isolation component is suspended above bottom conductive layer, and light isolation component and bottom conductive layer are mutually insulated and isolated;Wherein, top conductive layer is above all light isolation components.The present application can significantly improve the pixel yield of micro display device, and improve its display brightness and display contrast.

The backlight module comprises a closed supporting structure formed by wrapping a lower iron frame with an upper rubber frame, an LED lamp is fixed to a PCB in the lower iron frame, a light guide plate is located in front of the LED lamp and guides light rays, and a diffusion plate and a diffusion film sequentially cover the light guide plate to make the light rays uniform; a plurality of spherical bosses are arranged on the front face of the light guide plate, and the spherical bosses enable light to be diffused more evenly through refraction and condensation effects. The back surface of the light guide plate is provided with a plurality of spherical concave areas which can avoid an LED backlight source and carry out secondary focusing on light rays at the same time. Compared with the prior art, the light guide plate has the advantages that the spherical bosses are arranged on the front face of the light guide plate, light can be diffused more evenly through the refraction and condensation effects of the spherical bosses, meanwhile, the spherical inwards-concave areas are arranged on the back face of the light guide plate, an LED lamp is avoided, secondary focusing is conducted on the light, and the display quality problem caused by uneven backlight in the local dimming technology is effectively solved.

The application discloses a micro light emitting element and a micro display device thereof, comprising a semiconductor layer sequence, a first electrode and a second electrode, the semiconductor layer sequence has a first semiconductor layer, a second semiconductor layer and an active layer between the two, the first electrode is electrically connected with the first semiconductor layer, the second electrode is electrically connected with the second semiconductor layer, an insulating layer is arranged on the sidewall of the semiconductor layer sequence, the semiconductor layer sequence has a light emitting surface, the top of the insulating layer, the top of the semiconductor layer sequence and the light emitting surface are in the same level, and the influence of the edge of the insulating layer on the light emitting performance is reduced in the display unit with an ultra-small size.

The utility model relates to the technical field of PCB (printed circuit board) mounting structures and plant lamps, in particular to a lampshade for mounting a PCB and a lamp panel type plant lamp free of screw mounting. A lampshade for mounting a PCB (printed circuit board) comprises a body, hooking parts are arranged on two sides of the body respectively, and pressing legs used for abutting against the PCB are further arranged on two sides of the body respectively. According to the lampshade structure for installing the PCB, the PCB lamp panel can be rapidly and firmly buckled and installed on the heat dissipation piece without any screws, smooth attachment and efficient heat dissipation of the lamp panel and the heat dissipation piece are guaranteed, the lens can be integrated in the lampshade body so that light path refraction or light condensation can be achieved, meanwhile, the structure is simplified, cost is reduced, and later maintenance is facilitated.

The invention discloses a diffraction optical waveguide and an AR (Augmented Reality) display device, and relates to the technical field of AR display, the waveguide is characterized in that a single-layer waveguide structure is matched with an innovative layout of a double-sided diffraction region, a first surface is provided with a first diffraction region, a second diffraction region and a third diffraction region, and a second surface is provided with a fourth diffraction region, a fifth diffraction region and a sixth diffraction region; wherein the first diffraction area is responsible for coupling blue light and green light, the fourth diffraction area is responsible for coupling red light, and the double-coupling design effectively improves the coupling efficiency and uniformity of light with different wavelengths. Wherein the second diffraction region and the fifth diffraction region are mutually expanding and coupling-out regions, the occupied area of the structure is greatly reduced, the waveguide sheet is compact, light and thin, meanwhile, the third diffraction region and the sixth diffraction region serve as recycling regions, residual light energy can be recycled, and the overall light efficiency is remarkably improved. And through optimization of the grating direction, vector closing of light with different wavelengths in the waveguide is ensured, no dispersion is generated, and thus high uniformity and coincidence of image colors are ensured.

The application provides a high beam module and a vehicle lamp. The high beam module comprises a light source for emitting light; a high beam lens arranged on the light emitting side of the light source, the high beam lens being an integral structure, the high beam lens comprising a light inlet surface, a first total reflection surface, a second total reflection surface, a third total reflection surface and a light outlet surface, the second total reflection surface and the third total reflection surface being oppositely arranged along a first direction, the light outlet surface being located on one side of the third total reflection surface along a second direction, the light emitted by the light source being projected to the first total reflection surface through the light inlet surface, the parallel light being formed after being reflected by the first total reflection surface, the parallel light being reflected by the second total reflection surface and the third total reflection surface in sequence, and the parallel light being emitted by the light outlet surface to form a high beam light pattern; the light outlet surface comprises a plurality of sub-light outlet surfaces arranged in sequence along a third direction, and the distance between the root of each sub-light outlet surface and the light source along the second direction gradually increases along the third direction. The application can improve the light efficiency of the high beam module while ensuring the narrow opening size.

This utility model belongs to the field of LED display technology and discloses an outdoor LED grid display screen, including multiple LED light source emitters arranged in a grid array. Each LED light source emitter includes an emitter body and a light source emitting head. One side of the emitter body is a mounting surface and is mounted on a mounting frame. Multiple light source emitting heads are correspondingly embedded on the end face of the emitter body away from the mounting surface. The light emitted by the light source emitting heads is emitted horizontally in a wide-angle manner. Each light source emitter is equipped with a reflector located above the light source emitting head. One end face of the reflector is an inclined mirror surface, with its lower end abutting against the end face of the emitter body away from the mounting surface and its upper end away from this end face, so as to reflect part of the light emitted upwardly by the light source emitting head in a horizontal direction. This grid display screen can reduce the upward tilt of light and reflect it in a horizontal direction, thereby improving the brightness of the light and the clarity of the display screen.

The invention discloses a green light Micro-LED epitaxial structure and a preparation method thereof, and relates to the technical field of semiconductor devices. A multi-quantum well light-emitting layer in the epitaxial structure comprises an N-polarity blue light multi-quantum well layer, an N-polarity green light multi-quantum well layer, a Ga-polarity green light multi-quantum well layer and an N-polarity blue light end quantum well layer which are stacked in sequence. The N-polarity blue light multi-quantum well layer, the N-polarity green light multi-quantum well layer and the N-polarity blue light end quantum well layer each comprise an N-polarity well front gradient InGaN layer, an N-polarity quantum well InGaN layer, an N-polarity well rear gradient InGaN layer and an N-polarity quantum barrier GaN layer which are sequentially, periodically and alternately stacked. The Ga polarity green light multi-quantum well layer comprises a Ga polarity well front carrier binding layer, a Ga polarity light-emitting quantum well InGaN layer, a Ga polarity well rear carrier binding layer and a Ga polarity quantum barrier GaN layer which are sequentially, periodically and alternately stacked. According to the invention, the radiation recombination efficiency of the active region under the low working current density can be improved, and the lighting effect of the Micro-LED chip under the low working current density is further improved.

The utility model provides an LED packaging structure and a lamp bead, the LED packaging structure comprises a bowl cup support, the bowl cup support is internally provided with a light-emitting chip, a reflection part and at least two fluorescent layers, the light-emitting chip is located on the bottom wall of the bowl cup support, the at least two fluorescent layers sequentially cover the side, away from the bowl cup support, of the light-emitting chip, and the reflection part is located on the bottom wall of the bowl cup support. The excitation wavelengths are sequentially decreased along the direction far away from the light-emitting chip; the reflecting part is at least arranged on the inner side wall of the bowl-cup support, and the reflectivity of the reflecting part is larger than that of the bowl-cup support. Therefore, through the high reflectivity of the reflecting part, the light absorption of the bowl cup support can be reduced, the light emitting loss is reduced, the lighting effect is further improved, and the lighting effect of the LED product can be further improved through the sequential excitation of the plurality of fluorescent layers.

The application discloses a light adjusting module with a three-layer composite structure, which comprises a scattering layer, a gap layer and an angle control layer which are arranged in a composite manner, the gap layer is arranged between the scattering layer and the angle control layer, the surface of the scattering layer is provided with a plurality of first optical microstructures, the surface of the angle control layer is provided with a plurality of second optical microstructures, and the gap layer comprises a plurality of light adjusting channels for guiding light from the scattering layer to the angle control layer. The light adjusting device with the three-layer composite structure is a whole of the scattering layer, the gap layer and the outer angle control layer, the functions of the light adjusting channels and the angle control layer are coupled, high light efficiency is realized, the synchronization optimization of light angle control, anti-dazzle and light spot uniformity is completed, and the contradiction between'scattering reduction' and 'anti-dazzle loss of uniformity' in the traditional technology is broken through.

The utility model discloses a lens subassembly and vehicle. According to the utility model lens subassembly including first lens, first light emitting part, second lens and second light emitting part, the both ends of first lens form respectively first light inlet end and first light outlet end, first light emitting part set up in one end of first lens and be suitable for emitting light to first light inlet end, second lens is provided with second light inlet end and third light inlet end, and the third light inlet end is correspondingly set with first light outlet end, and second light emitting part corresponds with second light inlet end and is suitable for emitting light to second light inlet end. According to the utility model lens subassembly, by setting second light inlet end and third light inlet end on second lens, corresponding low beam and ADB high beam respectively, the integration of ADB outer lens and low beam lens is realized, the number of parts is reduced, the cost is reduced and the assembly deviation is reduced, and the performance of vehicle lighting system is improved.

The utility model provides an LED filament lamp which comprises a lamp holder and a bulb shell arranged on one side of the lamp holder, and further comprises a heat dissipation substrate arranged on the side, close to the bulb shell, of the lamp holder, an LED flip chip fixed to the heat dissipation substrate in an inverted eutectic mode, and a light-transmitting piece arranged on one side of the light-emitting face of the LED flip chip, and fluorescent powder is arranged on the light-transmitting piece. The LED filament lamp further comprises a light guide column arranged on one side of the light emitting face of the LED flip chip. The fluorescent powder is coated in the bulb shell through the coating or uniformly mixed in the ceramic chip instead of coating and wrapping the blue-light LED flip chip, and the remote fluorescent powder technology and the LED flip chip are combined in the whole bulb shell, so that the problem of poor reliability caused by low luminous efficiency and high heat is solved, high luminous efficiency can be realized, and the service life of the LED flip chip is prolonged. The application scene that the LED filament lamp replaces a sodium lamp is achieved.

The application discloses a chip structure and a preparation method thereof. The chip structure comprises a substrate, a first semiconductor layer, a second semiconductor layer and an active layer. The active layer is located between the first semiconductor layer and the second semiconductor layer. The first semiconductor layer, the active layer and the second semiconductor layer are sequentially grown on the substrate. A conductive layer one forms ohmic contact with the second semiconductor layer. A reflective layer forms electrical connection with the conductive layer one. A conductive layer two forms electrical connection with the reflective layer. The conductive layer two comprises a multilayer metal structure. The application adjusts the composition of the insulating layer one, changes the etching rate of different levels of the insulating layer one, and thus obtains a better etching guide angle. The application can effectively improve the internal stress of the chip device, reduce the sharp tip discharge phenomenon, improve the stability of the chip device, and increase the reflection of the optical film and improve the light efficiency of the chip device by adjusting the composition of the insulating layer one and changing the refractive index of different levels of the insulating layer one.

The present invention relates to an LED package including a bump in a window substrate, and a method for manufacturing the same, the LED package including: an LED chip having a light emitting portion for diffusing a light source on one surface and a contact pad portion for electrical connection on the other surface opposite to the one surface; a substrate including a plurality of windows formed through each other at a predetermined interval, a connection pad electrically connected to the outside on a surface other than the windows, a first contact surface provided on the connection pad close to the windows, and a second contact surface on the connection pad located further away from the windows than the first contact surface, the welding ball is arranged on the second contact surface, the LED chip is arranged in the window, the light-emitting part is exposed towards the other surface, and the first contact surface and the contact pad part are bonded through a conductive wire; and a fluorescent molding member having a groove covering the other surface of the substrate and into which a part of the light emitting portion is inserted, and an inclined surface for expanding an illumination angle of the light source emitted by the light emitting portion.

The present application relates to a kind of mother pixel arrangement structure and micro display device.The mother pixel arrangement structure includes driving backplate and multiple subpixels;Two subpixels in different pixel layers are located in: the inside of one subpixel in upper pixel layer is opened light transmission hole and constitutes light transmission pixel, the periphery of the light transmission hole of light transmission pixel forms peripheral light emitting area, the projection area of light transmission hole on driving backplate is second projection area, another subpixel in lower pixel layer is associated pixel, the projection area of associated pixel on driving backplate is first projection area, first projection area and second projection area at least partially overlap, so that associated pixel emits light at least partially via the light transmission hole of light transmission pixel shoots out.The present application also discloses a kind of micro display device, the present application can effectively improve the light efficiency and reliability of display device, also can make its light type meet the demand of different application scenarios.

This invention discloses a low-current-density blue Micro-LED epitaxial structure and its fabrication method, relating to the field of semiconductor device technology. The multi-quantum-well emitting layer of the epitaxial structure comprises, sequentially stacked along the epitaxial direction, a violet multi-quantum-well layer, a light blue multi-quantum-well layer, a blue multi-quantum-well layer, and a violet-light-end quantum-well layer. Each of the violet, light blue, blue, and violet-light-end quantum-well layers includes, sequentially and periodically alternating N-polarity gradient InGaN layer before the well, an N-polarity InGaN quantum-well layer, an N-polarity gradient AlGaN layer after the well, and a Ga-polarity GaN quantum barrier layer. The N-polarity gradient InGaN layer before the well is an N-polarity InGaN material with an increasing In content along the epitaxial direction. This invention can significantly improve the luminous efficacy of Micro-LED chips at low operating current densities.

The utility model discloses a high -efficient heat dissipation's nine hole COB integrated plant lamp shell, including protection bottom plate, fixed frame and top cap, the position department of top cap inboard corresponds LED lamp pearl and all is provided with inner cover body, and the outer side of inner cover body all is provided with outer cover body, the airflow channel is formed between outer cover body and inner cover body, and the both ends of airflow channel all are provided with air port, the both ends of fixed frame all are provided with ventilation, and the position department of two ventilation inboard corresponds air port and installs respectively outgoing fan and air inlet fan. The utility model discloses the airflow channel formed between the inner cover body and outer cover body of top cap inboard setting and the air port design of airflow channel both ends, ensure that the air flow is smooth, and further improve the heat dissipation effect. The ventilation of fixed frame both ends setting, cooperate the use of outgoing fan and air inlet fan, form effective forced convection heat dissipation system, make internal heat can discharge rapidly, keep LED lamp pearl in suitable working temperature.