35results about How to "Uniform light output" patented technology

The utility model relates to the technical field of COB light sources, and particularly discloses a constant-voltage front-mounted double-color COB, which comprises a COB substrate, a light source mounting groove and a plurality of constant-voltage IC chip mounting grooves communicated with the light source mounting groove are arranged on the COB substrate, a plurality of warm light chips and cold light chips are arranged on the light source mounting groove, and the constant-voltage IC chip mounting grooves are communicated with the light source mounting groove. A constant-voltage IC chip is arranged on the constant-voltage IC chip mounting groove, a light-shielding silica gel layer is coated above the constant-voltage IC chip mounting groove, a plurality of power supply bonding pads are arranged at the diagonal positions of the COB substrate, and the constant-voltage IC chip is electrically connected with the warm light chip, the cold light chip and the power supply bonding pads respectively. The constant-voltage IC chip is installed by arranging the constant-voltage IC chip installation groove, a lampwick and a constant-voltage device can be reasonably arranged, the space is fully utilized, uniform light emitting is achieved, the light shielding effect is good, the light emitting efficiency is high, and the application range is wide.

The invention belongs to the technical field of light emitting, and particularly relates to a side-in type backlight module which comprises a circuit substrate, lamp panels, a light emitting chip, a light uniformizing piece and a light uniformizing unit, the lamp panels are arranged on one side of the circuit substrate and are perpendicular to the circuit substrate, a plurality of grids are defined by the multiple lamp panels on the surface of the circuit substrate, and the light emitting chip is arranged on the light uniformizing piece. One surface of the circuit substrate close to the lamp panel is coated with a reflecting layer; the light-emitting chips are arranged on the surface of the lamp panel, at least one light-emitting chip is arranged in each grid, and the circuit substrate and the light-emitting chips are electrically connected through the lamp panel; the grids are wrapped and clamped by the dodging sheet and the circuit substrate, a plurality of dodging units are arranged on the side, close to the circuit substrate, of the dodging sheet, the dodging units and the grids are embedded into the grids in a one-to-one correspondence mode, and the dodging sheet is positioned. The backlight module has the effect that positioning between the dodging sheet and the backlight source is more stable and accurate.

The invention provides a lighting device. The lighting device comprises a lamp body and a light source assembly fixedly connected to the lamp body. The lamp body is of an arc-shaped structure and comprises a base table, a first surrounding edge and a second surrounding edge. The second surrounding edge is arranged on the inner side of the first surrounding edge and provided with a heat dissipation groove. The light source assembly comprises a substrate and light-emitting units arranged on the substrate, the light-emitting units surround to form a light-emitting area capable of adjusting light and color, the substrate is of an arc-shaped structure, the side edge of the substrate is connected with an insulation pad in a buckled mode, and the substrate is fixedly connected to the second surrounding edge; heat generated by the light-emitting unit is dissipated to the outside through the substrate and the heat dissipation groove. The lamp body and the substrate of the lighting device are provided with the arc-shaped structures and can be spliced according to requirements; heat generated by the light-emitting unit is dissipated to the outside through the substrate and the heat dissipation grooves, conduction heat dissipation and convection heat dissipation are achieved, the pressure difference between the inside and the outside of the lamp body is effectively balanced, and the service life of the whole lamp is prolonged. The invention further provides a lighting system comprising the lighting device.

An LED lamp, relating to the technical field of LED lamps, comprises a heat dissipation component, the heat dissipation component is used to dissipate the heat of the lamp; a lamp bead plate, the lamp bead plate is used to install a light source; a lens component, the lens component is used to converge or diverge the light emitted by the light source; a fixing component, the fixing component is used to fix and install the lens component. By setting the fixing component, each group of hexagonal lens components are fixedly connected, so as to achieve the effect of small gaps and close arrangement between each lens component; and by avoiding the use of metal plates through the fixing component, the light-incoming surface of the light guide rod on the lens is at the same distance from the light-emitting surface of the light source, so as to achieve the effect of uniform light output.

The utility model relates to a clothes airing machine with a curved screen. The utility model relates to a clothes airing machine with a curved surface screen. The clothes airing machine comprises a curved-surface-shaped lighting module, the lighting module comprises a light guide body and at least one light emitting body, the light guide body is in a U shape in the width direction and extends to be in a curved surface shape in the length direction, and the light emitting body is tightly arranged along the U-shaped side of the light guide body. The shape of the luminous body is matched with the shape of the light guide body, and the length of the luminous body is smaller than or equal to the U-shaped arc length of the light guide body. According to the clothes airing machine with the curved surface screen, the curved surface luminous body is arranged on the side edge of the curved surface type light guide body, light rays are guided out through the curved surface type light guide body, and large-angle uniform light emitting is achieved; meanwhile, the lighting module is simple in structure, and dust or mosquitoes can be prevented from entering the light guide body to form shadows to affect use of a user.

The utility model discloses a novel LED light guide bar with uniform light, which comprises a mask, a rear shell, a light guide bar, a side cover L, a side cover R, a wiring harness sub-assembly, a lamp bead plate I and a lamp bead plate II, LED lamp beads are arranged in the rear shell, a driving aluminum substrate is arranged in the rear shell, the light guide bar is aligned with the centers of the LED lamp beads and is arranged on the rear shell, and the LED lamp beads are arranged on the rear shell. And the PC lens is arranged on the rear shell and is glued to fix the mask. The LED lamp beads collect and gather divergent light rays through the light guide strips, so that the light rays are concentrated, the brightness in unit area is greatly improved, the light rays are uniform and attractive, rear driving at night is prompted that a vehicle is close to the front, the safety of night driving is greatly improved, and the LED lamp is uniform in light emitting, simple in structure, high in operability, easy to control, low in cost and suitable for popularization and application. The novel light guide strip with the uniform light of the LED lamp has practical application value, is a product suitable for all vehicle types, and is convenient and simple to install.

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 relates to an icon indication structure, a key module and a vehicle, the icon indication structure comprises a light emitting part, a light guide part, a light diffusion agent and a shading part, the light inlet surface of the light guide part is located on the light outlet side of the light emitting part, the light diffusion agent is uniformly arranged in the light guide part, and the shading part is arranged on the light outlet surface of the light guide part; wherein the shading part comprises a shading area and an icon light-transmitting area, the shading area can limit light rays from being emitted from the light-emitting surface, and the icon light-transmitting area can enable the light rays to be emitted from the light-emitting surface. The light diffusion agent is uniformly arranged in the light guide part, so that the light can be more scattered in the light guide part, the emergent light is more uniform, in addition, the light can be emitted at various angles by adding the light diffusion agent, the light-emitting area of the light-emitting surface can be increased, and the light-emitting efficiency is improved. Large-area light emitting can be achieved without making the light-emitting piece far away from the light inlet face of the light guide piece, and the design of the compact structure is utilized.

The utility model discloses a flash lamp shade of eccentric light compensation, include: main part, stretch out, light entrance surface and light exit surface, main part with stretch out department link, light entrance surface set up in the bottom of main part, it has annular fresnel tooth, light exit surface sets up in the top of stretch out department, light exit surface is inclined surface. The utility model has beneficial effect in that, set up the angle of light exit of inclined light exit surface adjustment, suitable for the case of luminescent device and lampshade eccentricity, guarantee light -emitting even, and the annular fresnel tooth of light entrance surface can carry out effective convergence and homogenization treatment to incident light, thereby promote overall light compensation effect.

This application discloses a button light guide structure, an luminous button, and an electronic device. The button light guide structure is applied to an luminous button, which includes a light source. The button light guide structure includes: a base with at least one receiving groove on its lower surface; the light source is located within the receiving groove; at least one scattering part penetrating the base and positioned above the light source; a diverging area on the upper surface of the base, comprising multiple diverging blocks evenly distributed on the upper surface of the base; a reflector above the diverging area for reflecting light; and an upwardly extending edge of the base forming a light guide ring. The button light guide structure of this application provides more uniform light emission from the light guide ring, effectively reducing glare.

The utility model discloses a waterproof slanting light anti -dazzle wall washer lamp belongs to wall washer lamp technical field, include: wall washer lamp body, the inside wall of wall washer lamp body is seted up and inserts the slot, and the inner chamber of wall washer lamp body is provided with circuit mainboard, and the side of circuit mainboard is seted up with a plurality of location recess, and the location recess is welded with the light source circuit board, and the upper portion of light source circuit board is installed with wall washer light source, integral type horizontal anti -dazzle grid, the surface is provided with a plurality of groups equidistance arrangement horizontal anti -dazzle stripe, and each group horizontal anti -dazzle stripe contains a plurality of horizontal anti -dazzle stripes, and is seted up in the insert slot, integral type vertical anti -dazzle grid, the surface is provided with a plurality of groups equidistance arrangement vertical anti -dazzle stripe, and each group vertical anti -dazzle stripe contains a plurality of vertical anti -dazzle stripes, also seted up in the insert slot, two waterproof silica gel rings, this wall washer lamp can select the anti -dazzle direction, and can realize the different light slanting degree through the inclination of the location recess on the circuit mainboard, and is more flexible.

This invention discloses a strip defect detection light source and defect detection device. The strip defect detection light source includes a lamp bead, a first transmitting element, a second transmitting element, and a reflector. The first transmitting element includes a first light-inlet surface and a first light-outlet surface. The first light-inlet surface is convex, and the lamp bead is located at the focal point of the first light-inlet surface. The first light-outlet surface includes alternating first flat portions and first concave portions, with the concave portion of the first concave portion facing the centerline of the first light-outlet surface. The second transmitting element is fixed on both sides of the first transmitting element and surrounds the light-emitting side of the lamp bead. There are two reflectors, each fixed to one side of the two second transmitting elements away from the first transmitting element. This invention achieves directional refraction through the first concave portion, guiding the light from the central region of the light source to both sides in an orderly manner, effectively supplementing the light amount in the lateral regions, and achieving uniform light output across the entire area. At the same time, it maintains high directivity of the light throughout the process, avoiding interference from diffuse light with the imaging effect of defect detection.

The present application provides a kind of lens and lamp, the lens includes concave light cavity and the light cavity below and concave light exit cavity, the first light entrance surface is in the light cavity, the first light exit surface is in the light exit cavity opposite the first light entrance surface, the first microstructure is on the first light entrance surface, the second microstructure is on the first light exit surface, the light from the first microstructure is incident, and the first microstructure generates once self-mixing light, and the second microstructure is emitted and generates twice self-mixing light.Compared with prior art, the present application is simple in structure and the light emitted is uniform and free of yellow spots.

The utility model discloses a multicolor light guide assembly structure which comprises a base, a retaining wall assembly is arranged at the upper end of the base, a light emitting assembly is arranged in the retaining wall assembly, the light emitting assembly comprises a multicolor LED lamp set and a tawny support, a light equalizing film and a limiting clamping plate are sequentially arranged on the tawny support, and the retaining wall assembly comprises two baffles arranged in a mirror image mode. The two baffles are arranged on the two sides of the light-emitting assembly respectively and fixedly connected through locking screws. The multi-color LED lamp has the advantages that through the structural design of the light uniformizing film, the tawny support, the limiting clamping plate and the matched retaining wall assembly in the light-emitting assembly, the effects that the multi-color LED lamp set emits light evenly, and visual effect pictures on a liquid crystal panel are even are achieved.

The utility model discloses a high-brightness LED lamp panel which comprises a radiator, a PCB is installed on the top of the radiator, a plurality of LED lamp beads are arranged on the top of the PCB, a heat conduction plate is arranged on the top of the PCB, a reflecting plate is arranged on the top of the heat conduction plate, a plurality of heat conduction holes are formed in the inner side of the PCB, heat conduction media are arranged in the heat conduction holes, and the reflecting plate is arranged on the inner side of the PCB. The top face of the heat-conducting medium makes contact with the heat-conducting plate, the bottom face of the heat-conducting medium makes contact with the radiator, and the top of the PCB is covered with a light-transmitting cover. The heat dissipation structure is simple, part of light emitted by the LED lamp beads is reflected by the reflecting plate and then emitted, light emitting is more uniform, light emitting dark areas are reduced, the illumination effect is improved, the using effect is good, heat in the lamp body is transmitted to the heat conducting plate through the reflecting plate, the heat conducting plate transmits the heat to the radiator for heat dissipation through the heat conducting medium, the heat dissipation effect is good, and the service life of the LED lamp is prolonged. The brightness of the LED lamp panel is easily improved, and the use is convenient.

The embodiment of the invention provides a light-emitting device and a preparation method of the light-emitting device, and relates to the technical field of light emitting. The light emitting device includes: a driving substrate; a plurality of LED chips, the plurality of LED chips are arranged at one side of the driving substrate, and the LED chips are electrically connected with the driving substrate; the wavelength conversion layer is integrally arranged, the wavelength conversion layer comprises a plurality of first grooves which are arranged at intervals, the first grooves and the LED chips are arranged in a one-to-one correspondence mode, and at least parts of the LED chips are contained in the first grooves; the first groove is configured to be aligned with the LED chip, and the wavelength conversion layer is configured to emit light with a target wavelength based on excitation of the LED chip. The embodiment of the invention is used for solving the problems of low LED packaging integration level and complex structure.

The utility model relates to the technical field of LED lamps, in particular to a novel LED lamp bead which comprises a lamp holder, at least three lamp bead chips and a bonding wire, the lamp bead chips are arranged on the lamp holder, the bonding wire is connected with the lamp bead chips and the lamp holder to enable a circuit to be connected, the number of the lamp bead chips is at least three, and the lamp bead chips are arranged around the center of the lamp holder. The distance between each lamp bead chip and the center of the lamp holder is the same. The multiple lamp bead chips are arranged around the center of the lamp holder, and the distance between each lamp bead chip and the center of the lamp holder is the same. The light-emitting angle and the luminous flux of each point are uniform, the emitted light is more uniform after being matched with a lens, the problems that light spots of products such as advertising lamp boxes are not uniform and rib lines exist can be well solved, and the display effect of light is improved. And a fluorescent layer is filled between the lens and the lamp bead chip and is filled with a mixture of diffusion powder and fluorescent glue. After the lamp bead chip emits light, the fluorescent layer can be excited, the effect of removing light spots is achieved, and the emitted light is more uniform.

The utility model relates to an LED bulb module with a COB light source sealed with an IC and an LED lamp, the LED bulb module with the COB light source sealed with the IC comprises a substrate and LED chips, the substrate is of a three-dimensional structure formed by bending, the LED chips are arranged on one or more faces of the three-dimensional structure, and the LED chips have various different light colors and can emit light in multiple directions in a three-dimensional space, so that the LED bulb module is more attractive in appearance and more attractive in appearance. Compared with the prior art, local darkness is relieved or even eliminated, the lighting effect is improved, the LED chips with various different light colors are packaged on each face in a COB packaging mode, good light distribution uniformity and a high color rendering index are achieved in the whole space, more real and natural colors are shown in lighting application, and the light efficiency is improved. Compared with a traditional lamp with a plurality of mixed lamp filaments, the LED lamp has the advantages of being better in color mixing uniformity, good in heat dissipation effect, good in lighting effect, easy to machine, small in occupied space, low in cost and the like.

The invention provides an LED combined lens and a preparation process thereof. A plurality of elliptical lenses are integrally formed on a lens main body; the raw materials of the elliptical lens comprise polymethyl methacrylate, zinc oxide, selenium bismuthide and silver; wherein the raw materials comprise the following components in percentage by mass: 57%-70% of polymethyl methacrylate; 10%-20% of zinc oxide; 5%-15% of selenium bismuthide; 2%-8% of silver; according to the combined lens, through special material combination and structural design, the light refraction effect is remarkably improved, compared with a traditional single-material lens, the propagation direction and distribution of light can be more effectively controlled, the light utilization efficiency is greatly improved, emergent light is more uniform and concentrated, and the illumination brightness and definition are effectively improved.

The present invention discloses a light guide ring and a beauty mirror having the light guide ring, wherein the light guide ring comprises a ring body, and at least one light guide segment extends and protrudes from the inner ring surface of the ring body; the light guide segment comprises a light entry segment, a middle segment and a tail segment, the middle segment is connected between the light entry segment and the tail segment, the light entry segment comprises a light entry surface, the thickness of the light entry segment gradually increases from the light entry surface to the end where the light entry segment is connected to the middle segment, and the thickness of the tail segment gradually increases from the end where the tail segment is connected to the middle segment to the end of the tail segment; the thickness of the end where the middle segment is connected to the light entry segment is greater than the thickness of the end where the middle segment is connected to the tail segment. The present invention can solve the technical problems that the existing beauty mirror cannot guide light 360 degrees, the light distribution is uneven, and the makeup lighting effect is not good.

The utility model relates to a backlight module, which comprises a circuit board, a light guide plate and a light guide plate, the plurality of light-emitting elements are arranged on the circuit board; the light guide part is connected with the circuit board, a groove is formed in the light guide part, a containing space is formed between the groove and the circuit board, and the light-emitting element is located in the containing space; the light control layer is arranged on the inner side face of the groove, and the light control layer comprises a reflecting area with high reflectivity and a light-transmitting hollow-out area. The beneficial effects of the utility model lie in that the light mixing uniformity can be improved, the light loss can be reduced, and the light and thin structure can be realized.

The application relates to the field of inkjet printing technology and discloses quantum dot ink and an electroluminescent device. The quantum dot ink comprises quantum dots and mixed polar solvents. The quantum dots comprise quantum dot bodies and organic chain segments connected to the surfaces of the quantum dot bodies, and the organic chain segments are linked with functional groups soluble in polar solvents. The mixed polar solvents comprise multiple polar solvents. The functional groups soluble in polar solvents are connected to the surfaces of the quantum dot bodies, so that the quantum dots can be dissolved in polar solvents. When the ink is printed on a TFB layer, the ink is compatible with the TFB layer, the interface compatibility between a quantum dot light-emitting layer formed after the ink is solidified and the TFB layer is high, the film surface of an electroluminescent device prepared by the application is uniform, and the electrical performance of the light-emitting layer formed by the ink is improved by adding zinc halide as an additive in the ink, so that the luminous brightness of the electroluminescent device is improved.

The invention relates to the technical field of LED lamp bead processing, and discloses an LED lamp bead board processing method and an LED lamp bead board. The LED lamp bead board processing method comprises the steps that a transparent substrate is divided into at least one sub-board, and an LED chip installation area, a first positive electrode conductive band and a first negative electrode conductive band are arranged on the front face of the sub-board in a silk-screen printing mode; a plurality of LED chips are installed in the LED chip installation area; lED chips are connected in series through gold threads to form an LED chip belt, and the two ends of the LED chip belt are connected with the first positive electrode conductive belt and the first negative electrode conductive belt through gold threads respectively; a first layer of fluorescent glue is uniformly sprayed on the LED chips on the front surface of the transparent substrate by adopting a powder spraying process and is in complete contact with the front surface of the transparent substrate, and a second layer of fluorescent glue is uniformly sprayed on the back surface of the transparent substrate and is in complete contact with the back surface of the transparent substrate. Therefore, the fluorescent glue is uniformly covered on the LED chip by adopting a powder spraying process, so that the LED chip emits more uniform light, heat generated during excitation of the fluorescent powder can be directly guided into the transparent substrate, and the heat resistance of the LED lamp bead is better.

The line lamp comprises a lamp body, a lampshade, two light source plates and two reflectors, an opening is formed in one side of the lamp body, the lampshade is arranged on the opening, the two light source plates are symmetrically arranged in the lamp body, an included angle is formed between the plane where the light source plates are located and the plane where the opening is located, and each light source plate comprises a plurality of LED patch lamp beads. The LED patch lamp beads are non-monochromatic lamp beads, the two reflectors are symmetrically arranged in the lamp body, one light source plate corresponds to one reflector, and the light reflecting faces of the reflectors face the corresponding light source plates and reflect light emitted by the light source plates to the lampshade. According to the line lamp capable of emitting light evenly, the width of the whole lamp can be effectively reduced, and the installation requirement of a small-size installation groove in a building installation face is met; and the light rays emitted by the two light source plates are emitted after being reflected, so that uniform light emission is realized, and the overall lighting effect and the total brightness are improved.

The utility model discloses a sound box narrow-distance dodging structure, which comprises an LED light bar and a lampshade, the LED light bar comprises a circuit board and a plurality of LED chips arranged on the circuit board, the sound box narrow-distance dodging structure is characterized in that the lampshade is provided with a plurality of attenuation parts, and part of light emitted by the LED chips irradiates the corresponding attenuation parts and then is emitted. The light emitted by the LED chip is emitted after being attenuated by the attenuation part, so that the overall uniform light emission can be realized, the distance from the LED chip to the lampshade can be 2.77 mm, and the volume occupied by the narrow-distance uniform light structure on the sound box can be smaller.

The utility model relates to a wide-angle high-voltage LED device and a backlight module. The large-angle high-voltage LED device comprises a substrate and a high-voltage chip array, bonding pads which are insulated from each other are arranged on the surface of the substrate, and the high-voltage chip array is fixed on the substrate and electrically connected with the substrate; the high-voltage chip array comprises n LED chips, n is larger than or equal to 2, the LED chips are arranged at intervals, and the distance between the LED chips is smaller than or equal to 100 micrometers. According to the large-angle high-voltage LED device provided by the utility model, the plurality of LED chips are connected and tightly arranged, so that a high-voltage LED array device with uniform light emission is formed.

The present invention relates to the field of display technology, and in particular to a backlight module and a display device, wherein the backlight module includes a curved back panel and a backlight board, wherein the backlight board is arranged on one side of the curved back panel and is fitted with the curved back panel; the backlight board includes at least two sub-lamp boards, wherein the sub-lamp board includes a main body and at least one connecting portion arranged on one side of the main body, and adjacent sub-lamp boards are rotatably connected by the connecting portion so that the adjacent sub-lamp boards are bent along the bending direction of the curved back panel. In the backlight module provided by the present invention, the backlight board includes at least two sub-lamp boards, and the adjacent sub-lamp boards are rotatably connected by the connecting portion, so that the stress generated when the backlight board is bent is released, and stress concentration is avoided when the backlight board is bent, thereby effectively reducing the probability of separation between the backlight board and the curved back panel, ensuring that the light mixing height in the light mixing area of ​​the display module is consistent, thereby ensuring uniform light output from the backlight module, and improving the structural stability and service life of the display device.

The utility model discloses an assembly type LED bulb lamp, and relates to the technical field of production and processing of LED bulb lamps, the assembly type LED bulb lamp comprises a power connection block, the top of the power connection block is fixedly connected with a power connection assembly, the upper portion of the power connection assembly is provided with a bottom cover assembly, the top of the bottom cover assembly is provided with a top cover assembly, the power connection assembly comprises a power connection threaded head, and the power connection threaded head is fixedly connected with the power connection assembly. And a threaded shaft is arranged at the top of the outer surface of the power connection threaded head. According to the assembled LED bulb lamp, through the threaded shaft arranged at the top of the outer surface of the power connection threaded head, the threaded shaft can be conveniently and rapidly connected with threaded grooves formed in the periphery of the bottom of the bottom PC cover in a threaded mode, and clamping blocks on the front side, the rear side, the left side and the right side are driven through combined stretching and retracting of springs and dampers on the front side, the rear side, the left side and the right side; and the inner wall of the jack I is clamped, the connection of the bottom PC cover and the top PC cover is fixed, the rapid assembly of the bottom cover assembly, the top cover assembly and the power connection assembly is improved, and when one of the components is damaged, the components can be replaced.

The utility model relates to the technical field of lamps, in particular to a chain light wall washer lamp which comprises a plurality of shells, two ends of each shell are arc-shaped, and a lamp panel and a driving plate are fixedly arranged in each shell. The plurality of bottom covers are arranged at the lower part of the shell; the adjacent wires are electrically connected, the wires are electrically connected with the driving plate, and the wires are located between the shell and the bottom cover; and a plurality of universal balls, wherein the universal balls are arranged at the joints of the adjacent wires in a sleeving manner. According to the utility model, universal rotation can be realized by arranging the universal ball, the limitation of directional rotation is avoided, and the device can be mounted on any buildings with special-shaped curved surfaces to meet any mounting and application requirements. Due to the fact that the lamp body modules are connected through the universal ball structures, the universal balls shield interfaces of the wires, male and female connectors do not need to be exposed for connection, and the appearance is attractive.

This invention discloses a Mini LED backlight and its backlight module, comprising a circuit board, several chips, and an optical layer. The chips and optical layer are fixed above the circuit board, with the optical layer covering the chips. The chips and optical layer constitute independent light-emitting units. The optical layer includes a first optical layer…annth optical layer stacked sequentially from the inside out, all of which are fixedly connected to the circuit board. Each of the first…annth optical layer contains filling particles. The angle between the first curved segment and the circuit board is θ1; the angle between the second curved segment and the circuit board is θ2; the angle between the external tangent of the third starting point of the third curved segment and the circuit board is θ3. The relationship between angles θ1, θ2, and θ3 is: θ3 > θ2 > θ1. In this invention's Mini LED backlight and its backlight module, increasing the light emission angle provides the advantages of preventing dark stripes and ensuring uniform light color.