23results about How to "Uniform brightness" patented technology

The invention relates to the field of lighting equipment, and particularly discloses a green lamp which comprises a lamp shell, a blue sky module and a main lighting module, the main lighting module is arranged on the side face of the lamp shell, and the blue sky module is arranged at the top of the lamp shell; the blue sky module comprises a shell, a Rayleigh scattering light guide plate, a reflection unit and a first light source; the Rayleigh scattering light guide plate is arranged in the shell; the reflection unit is arranged on the back of the Rayleigh scattering light guide plate and can reflect light rays emitted from the back of the Rayleigh scattering light guide plate into the Rayleigh scattering light guide plate again on the surfaces with different distances from the back of the Rayleigh scattering light guide plate; the first light source is arranged on one side of the Rayleigh scattering light guide plate; the main lighting module comprises a reflective bowl and a second light source. The blue sky effect can be formed, the independent lighting module is arranged, the brightness in the irradiation range is uniform, the appearance is slim, and installation in a narrow space is facilitated.

The application provides a panoramic system brightness adjusting method, which comprises the following steps: acquiring images of each camera; determining overlapping areas of the images of each camera; selecting a first image as a reference image of a panoramic image and a second image as a to-be-stitched image in the overlapping areas; acquiring an initial homography matrix between the reference image and the to-be-stitched image; correcting the initial homography matrix to obtain an optimized homography matrix; stitching the reference image and the to-be-stitched image through a bilinear interpolation algorithm according to the optimized homography matrix to obtain a panoramic stitched image; and judging whether the brightness uniformity of the panoramic stitched image meets a preset value; if yes, the panoramic image stitching is completed; otherwise, the brightness of the panoramic stitched image is adjusted. The application realizes the brightness uniformity of the panoramic stitched image and improves the imaging quality.

The utility model discloses a kind of thick-wall type steering signal lamps, including bottom shell, lamp panel assembly, light distribution lens, veneer and lampshade, lamp panel assembly is installed in bottom shell, lamp panel assembly includes lamp panel body and the multiple lamp beads evenly arranged along its contour edge;Light distribution lens is thick-wall piece, is installed in bottom shell front end, its inner wall is equipped with baffle ring, light distribution lens is polygonal ring structure and lamp bead arrangement path is adapted;Veneer one side is equipped with flanging and baffle ring is resisted, the other side is equipped with connecting rod;Bottom shell side wall is equipped with connecting protrusion, connecting protrusion is equipped with jack on, jack is equipped with baffle disc in, connecting rod end is connected with baffle disc by fastening bolt;Bottom shell opening is equipped with stepped limiting groove, including first limiting groove and second limiting groove, first limiting groove is used to install light distribution lens, second limiting groove is used to install lampshade, and light distribution lens and lamp bead arrangement path are matched by thick-wall polygon, realize light even distribution effect.

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.

Disclosed are a display apparatus and a driving method thereof. The display apparatus includes a display panel configured to display an image, a driver configured to drive the display panel, a controller configured to control the driver, and a duty cycle controller configured to define an unknown area and a known area within one frame when a driving frequency of the display panel is changed, and to change a duty cycle for driving the known area, wherein vertical resolution information is unknown in the unknown area and the vertical resolution information is known in the known area.

The present application relates to a kind of sample processing platform for carbon fiber number counting and the counting method of carbon fiber number, belong to carbon fiber detection technical field, solve the problem of low accuracy of counting caused by complex carbon fiber sample preparation and poor sample quality in existing method.Sample processing platform includes fixed platform and detachable auxiliary platform, fixed platform is internally provided with support area, sticking area and reference area from top to bottom, three are coaxial ladder-shaped hole structure, and auxiliary platform is sleeve-shaped.Counting method includes: using the sample processing platform to prepare fiber cross-section sample without adhesion and debris;Sample is placed into scanning electron microscope, and the overall picture is obtained by low-resolution scanning and high-resolution puzzle;Overall picture is segmented into slice;Slice is imported into image analysis software, and after gray threshold conversion, denoising, area and roundness screening, it is automatically counted and summed.The present application is simple in sample preparation, clear in image, accurate in counting, and significantly improves the efficiency and accuracy of carbon fiber number statistics.

The invention relates to the technical field of microlens detection, in particular to an automatic microlens detection method and system, and the method comprises the steps: obtaining a stripe image of a microlens under the illumination of a stripe structure; preprocessing the stripe image to obtain a preprocessed image with a block area as a foreground; determining a rotation angle according to the boundary of the reference block region, and rotating the corrected stripe image to align the stripe with the row direction; segmenting the rotating image, identifying a connected block, solving an external frame to generate a block mask and a complementary set interval mask thereof, and obtaining a block image and an interval image; performing segmentation on the block image, taking a median value according to rows to replace and generate a block reference image, performing differential binarization to obtain a block defect candidate, and performing independent binarization and merging on an abnormal region; overlapping the interval image and the block mask, performing closed operation to suppress line noise, and then performing binarization inversion to obtain an interval defect candidate; and superposing the two candidate output defect mark images. According to the invention, the defect can be automatically identified and marked and output by the microlens under the stripe background.

The application discloses an energy-saving lighting ornament control method and a control system thereof, and relates to the technical field of intelligent lighting control. The method comprises the following steps: dividing a target Christmas tree into a plurality of sub-regions, performing slow start control on the light strings in each sub-region, obtaining a first slow start sequence, acquiring a light string brightness change curve after the light strings are turned on, constructing a light string turning-on judgment threshold set based on the change characteristics of the curve, extracting the light string turning-on time sequence of each sub-region, constructing a plurality of second slow start sequences based on the light string turning-on time sequence, applying the second slow start sequences to the slow start control of each sub-region respectively, extracting control characteristics, and obtaining a first control characteristic set; and iteratively selecting the plurality of second slow start sequences according to the first control characteristic set, obtaining an optimal slow start sequence, and applying the optimal slow start sequence to the Christmas tree ornament control, so that the problem that the turning-on time of the light strings at the remote end or with low voltage is inconsistent due to start delay in a large Christmas tree scene is solved.

The utility model relates to a multifunctional socket which comprises a socket body and a panel detachably connected to the socket body, the panel is provided with first jacks for insertion of plugs, the socket body is provided with a plurality of metal sheets, the metal sheets are used for being in contact with and communicated with the plugs inserted into the first jacks, and the multifunctional socket further comprises a protection assembly. The protection assembly comprises a safety door, a first driving part and a shielding block, the safety door is detachably connected to the socket body and located between the metal sheet and the first jack, the safety door is provided with a second jack for insertion of a plug, the shielding block is slidably connected to the safety door, and the first driving part drives the shielding block to slide on the safety door. The part, where the live wire and the zero wire are inserted, of the second jack is an electric shock part, and the shielding block is used for shielding the electric shock part. When the plug is not inserted into the socket for use, as the shielding block is positioned between the panel and the socket body, a user is difficult to move the shielding block away by inserting a hand or other slender objects into the first jack, so that the potential safety hazard of electric shock can be reduced.

According to an embodiment of this utility model, a blood type card reader and a blood type analyzer are disclosed. The blood type card reader includes a base, a cover, a diffuser, a first light source, and an imaging module. The blood type analyzer includes a blood type card reader. The cover and the base together define an installation cavity. The diffuser divides the installation cavity into an imaging area and a light source area on opposite sides. The imaging area allows blood type cards to be inserted. The first light source is located in the light source area and emits light away from the base. The light emitted by the first light source first shines on the inner wall of the cover. After reflection by the cover and harmonization by the diffuser, the light entering the imaging area is more uniform and softer. Because the light is homogenized before entering the imaging area, the light intensity at different locations in the imaging area tends to be consistent. The imaging module uses the diffuser as a background to photograph the blood type card. The photographed image has uniform brightness and is clear, reducing the probability of image distortion and improving the accuracy of blood type identification.

The utility model relates to the technical field of electric vehicle atmosphere lamps, in particular to an electric vehicle instrument panel atmosphere lamp assembly which comprises an instrument shell and an irradiation mechanism, the irradiation mechanism is arranged in the instrument shell and comprises a light isolation plate and a light emitting unit, the instrument shell is provided with a light transmitting area, and the light emitting unit is arranged in the light isolation plate. The light-isolating plate covers the light-emitting unit so that light emitted by the light-emitting unit can be emitted out through the light-transmitting area. According to the arrangement, light emitted by the light-emitting unit can only be guided to the set light-transmitting area through the light isolation plate, so that directional conduction of the light is achieved, scattering and crosstalk of the light are prevented, it is ensured that the light is transmitted according to a preset path, uniform brightness of the illumination area can be ensured, the conduction path of the light can be further optimized, and the light-emitting effect is improved. The precise control of the lighting effect is realized, the energy loss is effectively reduced, and the dual improvement of energy conservation and the lighting effect is realized.

The application provides a method for improving the definition of a projector and a projector. The method comprises the following steps: acquiring an input projection image and a blank reference frame of a projection screen, constructing an illumination decay mask based on the blank reference frame, and correcting the input projection image using the illumination decay mask to obtain a corrected image. The corrected image is converted into a YUV color space image to separate a luminance component image and a chrominance component image. Based on the edge pixel proportion, smooth area proportion and local variance mean in the luminance component image, an image content complexity parameter is determined. Based on the complexity parameter, the luminance component image is sequentially subjected to bilateral filtering, Canny edge detection, edge superposition, bicubic interpolation and Laplacian sharpening to obtain an output image with improved definition. The definition is adaptively adjusted through the above method.

The utility model provides a kind of optical system, vehicle light and vehicle, involve vehicle technical field.The utility model provides a kind of optical system, vehicle light and vehicle, by additionally providing extension reflecting surface on reflection member, improve the utilization of light, extension reflecting surface will part of light be reflected to the edge position of light guide piece, the light compensation of dark area position of light guide piece is carried out, avoid forming dark area at the edge position of light guide piece, so that when observing from outside, light guide piece overall brightness is uniform, and optical system and vehicle light lighting effect is good, and the degree of aesthetic feeling is high.

The application discloses a system and method for generating stable interference fringes by using a pure phase reflective liquid crystal spatial light modulator, and the system comprises a light source module, a laser collimation filtering and beam expanding module, a pure phase reflective liquid crystal spatial light modulator (SLM) control module and a CCD image acquisition module. The system can generate stable double-hole light spots by loading a gray-scale gradual phase grating on the SLM, replaces the method for generating double-hole light spots by using a photoetching mask in a traditional physical optical interference experiment, and can achieve the final result without the aid of other devices, and is simple and convenient to operate. In addition, compared with traditional interference systems such as a Talbot-Green system and a Mach-Zehnder system, the output interference fringes will not vibrate, and the calculation of the post-stripe movement amount is not affected, and the system has the characteristics of stable operation, flexible control and accurate calculation.

The application is suitable for the field of optical technology, and provides an optical waveguide assembly and a near-eye display device. The optical waveguide assembly comprises a waveguide substrate, an in-coupling grating, a redirecting grating and an out-coupling grating. The redirecting grating is located between the in-coupling grating and the out-coupling grating along an optical path. The in-coupling grating is used for coupling incident light into the waveguide substrate. The redirecting grating is used for deflecting and expanding the propagation direction of at least part of the incident light from the waveguide substrate, and diffracting at least part of the incident light to obtain first diffracted light. The out-coupling grating is used for coupling the first diffracted light out of the waveguide substrate. The redirecting grating is used for deflecting and expanding the incident light, which can widen the incident light, and disperse the incident light within its width to avoid light concentration, so that the first diffracted light is uniformly bright after being coupled out of the out-coupling grating, and the brightness uniformity of a picture seen by the human eye is improved.

The utility model discloses a kind of liquid crystal display modules, comprising: glue frame;Liquid crystal glass is located in the side of glue frame;Printed circuit board is located in the side of glue frame away from liquid crystal glass, part covers glue frame;The side of printed circuit board towards liquid crystal glass is equipped with LED patch indicator light, the side of glue frame away from printed circuit board is equipped with light guide column, LED patch indicator light is located in light guide column, light guide column is used to the light of LED patch indicator light produces spotlight.This application liquid crystal display module, by glue frame between liquid crystal glass and printed circuit board, the LED patch indicator light of the side of printed circuit board towards liquid crystal glass is embedded light guide column and touch key cap, realized with glue frame the integration of liquid crystal glass and light guide column and key cap, save the artificial of LED patch indicator light, realize assembly simplification, cost reduction and satisfy the implementation of the individualization scheme of customer.It realizes three-dimensional stacking, greatly reduces the plane occupied area and overall thickness of liquid crystal display module, beneficial to equipment light and thin.

Embodiments of the present application provide a method for improving unevenness of light intensity of a stripe, the method comprising: forming a grating stripe on a projection surface by a grating projection camera; taking a plurality of calibration points along a straight line perpendicular to the grating stripe, wherein the number of the calibration points is greater than the number of the grating stripe; obtaining a gray value of each of the calibration points; and adjusting a rotation angular velocity of a galvanometer of the grating projection camera according to the gray value. Embodiments of the present application also provide a structured light depth camera, a laser camera, an electronic device, a computer readable storage medium and a computer program.

The invention discloses a mine low-light image enhancement denoising method and system based on a wavelet diffusion model, and the method comprises the steps: an initial state mapping and condition embedding module which is used for splicing an input low-light image and a noise distribution diagram, mapping the spliced low-light image and noise distribution diagram to a high-dimensional hidden space, and outputting a high-dimensional feature tensor; the time-frequency sensing and feature decoupling module is used for realizing time domain control and frequency domain separation; the double-current parallel adaptive enhancement module is used for processing the low-frequency characteristic component and the high-frequency characteristic component; the self-adaptive feature alignment module is used for mapping low-frequency and high-frequency feature values to a unified distribution reference, dynamically adjusting a scaling gain and eliminating reconstruction noise; and the dynamic reconstruction and imaging output module is used for realizing dynamic task scheduling, space restoration and artifact elimination after restoration. According to the method, dual optimization of enhanced quality and operation efficiency can be realized, non-uniform noise is accurately suppressed, illumination is balanced, and the problems of out-of-control image brightness, color cast, insufficient reliability and the like are solved on the premise of not depending on pairwise data.

The utility model relates to the technical field of backlight driving, and discloses a backlight driving circuit, a backlight module and a liquid crystal display, the backlight driving circuit comprises a power supply input end, a boost type driving chip, a first diode, a second diode and a first resistor; the boost type driving chip comprises a power supply pin, a switch pin and a feedback pin, the power supply input end is connected with the power supply pin, the switch pin is connected with the anode of the first diode, and the cathode of the first diode is connected with the anode of the second diode; the cathode of the second diode is connected with the anode pin of the backlight source, the cathode pin of the backlight source is connected in series with the first resistor and then is grounded, the cathode pin of the backlight source is connected with the feedback pin, and the voltage required by the backlight source is smaller than that of the power input end. According to the utility model, the voltage difference of the backlight driving circuit can be simulated and amplified, so that the problem that a Boost type driving chip is difficult to drive a low-voltage backlight source can be effectively avoided.

This application discloses a clothing processing device. A light-diffusing component is disposed between a light-emitting component and an operation panel. The light-diffusing component includes a first optical layer and a second optical layer for scattering light emitted by LEDs to a light-transmitting area. The first optical layer is disposed corresponding to the operation panel, and its orthographic projection on the operation panel at least covers the light-transmitting area. The second optical layer is disposed corresponding to at least a plurality of LEDs, such that the orthographic projection of the second optical layer on the operation panel at least covers the orthographic projection of the LEDs on the operation panel, i.e., the first area of ​​the light-transmitting area. In this way, by covering the area of ​​the LEDs' orthographic projection with the second optical layer, which has lower light transmittance, the localized strong light formed by the direct illumination of the LEDs can be specifically weakened. At the same time, by covering the entire light-transmitting area with the first optical layer, which has higher light transmittance, the light emitted by the LEDs can be evenly scattered to the edge of the light-transmitting icon, making the overall brightness of the light-transmitting icon more uniform, thereby improving the user experience.

This utility model relates to a core-shell structure quantum dot dual-band anti-blue light backlight module in the field of display technology. It includes a substrate with a driving circuit on it. From bottom to top, the substrate is sequentially arranged with a light source layer, an emissive layer, a filter layer, and a diffusion layer. The light source layer is composed of blue quantum dots, and the emissive layer is composed of red quantum dots (CsPbBr3), green quantum dots (CsPbBr3), and transparent polystyrene, with the red and green quantum dots uniformly dispersed in the transparent polystyrene. The filter layer is a perovskite quantum dot core-shell structure layer, constructed using perovskite quantum dot core-shell material (CsPbBr3 / ZnS). The diffusion layer is composed of nanoscale polymer particles and EVA. This utility model provides eye protection, improves image quality, meets the human eye's visual brightness requirements and color synthesis needs, and brings users a display effect that combines health and a high-quality visual experience.

This invention provides an RGB ambient lighting assembly and a vehicle, belonging to the field of automotive parts technology. The housing includes a detachably connected lampshade and a base shell. The lampshade has a light-transmitting portion of a predetermined shape. At least two light guides are installed inside the base shell, with any two adjacent light guides forming a splicing area. Within the splicing area, the light guides are designated as a front light guide and a rear light guide, with the end of the front light guide close to the main light-emitting surface of the rear light guide. The light emitted from the main light-emitting surfaces of the front and rear light guides respectively forms a first light-emitting area and a second light-emitting area on the lampshade. The light-emitting surface at the end of the front light guide also includes a beveled light-emitting surface, and the light emitted from this beveled surface forms a third light-emitting area on the lampshade. This invention achieves uniform light emission from the RGB ambient lighting assembly by using the third light-emitting area emitted from the beveled light-emitting surface on the front guide to fill the area between the first and second light-emitting areas.

This application discloses an intelligent identification method and system for mine geological hazards using UAV oblique photography, relating to the field of spatial perception technology. By integrating subsidence, displacement, and stress factors, it plans a differentiated three-dimensional spatial deployment of a UAV swarm to ensure comprehensive coverage of hazard areas. The shooting angle is determined based on the rock strata displacement direction to highlight subtle deformations. The impact of the deviation between the actual image and the ideal angle on edge sharpness is analyzed, and the shooting angle is corrected to improve identification accuracy from the source. Color saturation and illumination uniformity analysis of the images are performed to dynamically compensate for illumination interference, providing a high-quality image foundation for identifying subtle deformations. Detailed texture and brightness contrast features are extracted and compared with comprehensive monitoring conditions to ensure clear capture of subtle textures and avoid missed or misjudged cases. Groundwater level changes and surface subsidence rates are introduced as dynamic indicators to iteratively optimize the position and angle, enabling the monitoring scheme to adaptively evolve with disaster indicators, achieving long-term accuracy and comprehensiveness in monitoring.