43results about How to "Uniform brightness" patented technology

The invention belongs to the technical field of rock core scanning and earth science, and particularly relates to a columnar rock core outer surface hyperspectral image reconstruction method, which comprises the following steps of: 1, acquiring a columnar rock core multi-angle hyperspectral image; 2, cutting an effective area of the multi-angle hyperspectral image of the columnar core; step 3, carrying out radiation correction on the multi-angle hyperspectral image of the columnar rock core; step 4, geometric correction of the multi-angle hyperspectral image of the columnar rock core; 5, splicing the multi-angle hyperspectral images of the columnar rock core; and step 6, removing an overlapping region of the spliced image to obtain a cylindrical core outer surface hyperspectral image reconstruction result. According to the method, radiation brightness distortion and geometric shape distortion generated in the hyperspectral image scanning process can be effectively corrected, and therefore accurate reconstruction of the hyperspectral image on the outer surface of the whole columnar rock core is achieved.

The utility model discloses a 3D printing lens and a projection device, comprising a front group lens group, a diaphragm and a rear group lens group which are sequentially arranged in a direction from an object plane to an image plane, and the focal length of the lens is 10mlt; flt; the focal length of the front lens group is-100mm, and the focal length of the rear lens group is-100mm; f front lt; the focal length of the rear lens group is-50mm, and the focal length of the rear lens group is 15mlt; f rear lt; 25 mm; the lens is highly matched with a 0.47-inch DMD chip, the offset rate of the lens can reach 0%, optical distortion is small, imaging is good, and the projection ratio of the lens is larger than 0.5 and smaller than 1.35; the device has a large defocus range and can adapt to an unstable lighting environment; the imaging picture brightness is uniform, the edge loss light energy is less, and the illumination light utilization rate is high.

The utility model discloses an LED luminous fishing float, and belongs to the technical field of fishing gear supplies. An LED light-emitting float comprises a circuit board body and a control module, a connecting module is fixedly arranged on the circuit board body, the connecting module is electrically connected with the control module, and the LED light-emitting float further comprises a plurality of sets of LED lamps welded to the two faces of the circuit board body respectively. The circuit board body is fixedly arranged in the light guide strip; according to the luminous float, the plurality of groups of LED lamps are fixed on the transparent flexible printed circuit board, and then are packaged by the light guide strip made of transparent silica gel, so that on one hand, the luminous float can be repeatedly used, the utilization rate of the luminous float is improved, on the other hand, the luminous float is small in light source loss, uniform in brightness and light in weight, and the effects of miniaturization, lightness and thinness are realized; and the problems of light loss and non-uniform darkness caused by arrangement of light sources in a traditional light guide mode are also avoided, and the use experience is improved.

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 present application provides a display panel, which includes a light-emitting component and a scattering component. The light-emitting component includes a first light-emitting element, a second light-emitting element and a third light-emitting element. The scattering component includes a flexible layer, a first scattering element and a second scattering element. The first scattering element includes a plurality of first protrusions, and the second scattering element includes a plurality of second protrusions. The first scattering element is deformed so that the plurality of first protrusions are spaced apart, and the second scattering element is deformed so that the plurality of second protrusions are spaced apart. The spaced plurality of first protrusions scatter the first color light emitted by the first light-emitting element, so that the brightness of the first color light is reduced, and the spaced plurality of second protrusions scatter the second color light emitted by the second light-emitting element, so that the brightness of the second color light is reduced, and the third color light emitted by the third light-emitting element will be attenuated. Thereby, the brightness of the bending zone is balanced, the picture in the bending zone will not appear yellowish, and the overall display effect of the display panel is improved. The present application also provides a display device.

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 discloses an LED light bar with a high-color-gamut backlight module, and relates to the technical field of LED light bars, in particular to the LED light bar with the high-color-gamut backlight module. Comprising a main body, an LED lamp strip, a wide-color-gamut LED chip, a light guide plate, a multi-channel driving chip, an optical sensor, an audio signal processing chip, an acousto-optic synchronous control circuit, an integrated module and a bottom plate. According to the utility model, the LED light bar adopts the wide-color-gamut LED chips and the optimized light guide plate, so that wider-color-gamut coverage and better display effect are realized. Through a multi-channel driving chip and an optical sensor, partition backlight control and dynamic brightness optimization are realized. An audio signal processing chip and an acousto-optic synchronous control circuit are introduced, backlight can be adjusted in real time according to music rhythm and emotion, and immersive audio-visual experience is created. And the compactness and the reliability of the equipment are further improved through the modular integrated design.

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.

The utility model relates to the field of lenses. The telecentric projection lens structure comprises a front lens group, a rear lens group and a diaphragm module, the front lens group is in threaded connection with the rear lens group, and the diaphragm module is in threaded connection with the front lens group; by arranging the front lens group, the rear lens group and the diaphragm module, the structure is modularized, the installation is convenient, a plurality of modules can be assembled at the same time, and the production efficiency is improved; by changing the lens into a telecentric lens, a projected image is unchanged in breadth size, negligible in distortion, consistent in stripe density and uniform in brightness in a field depth range, a measurement image with better quality can be obtained, the measurement precision is improved, and the lens is high in heat resistance, high in grinding precision and higher in projection permeability through an all-glass lens. A clearer projection image can be obtained, the resolution capability of a tiny structure is effectively improved, the connecting parts and the lens barrel are made of metal alloy materials, the thermal conductivity is good, the problems of virtual focus, out-of-focus and the like caused by deformation of the lens are avoided, and the focusing stability is high.

The invention provides a projection screen and a projection system, and the projection screen comprises a display diaphragm which is provided with a projection light-receiving surface; the screen frame is arranged on the periphery of the display diaphragm in a surrounding manner; the tensioning module is movably arranged on the screen frame and faces the display membrane, the tensioning module comprises a tensioning piece, the tensioning piece is provided with a telescopic part, the telescopic part faces the display membrane and is connected with the end of the display membrane, and the telescopic part is constructed to move relative to the screen frame so that the display membrane can be in a stretched state. The display diaphragm is flat, so that the projection picture is clear and uniform in brightness when being displayed, a user can conveniently watch the projection picture, the effect is good, and the mounting efficiency is relatively high.

The invention discloses an ophthalmic examination measurement system and a control method thereof. The ophthalmic examination measurement system comprises a biological measurement system, a refraction measurement system and a light path propagation system, the light path propagation system comprises an eyepiece with an annular lamp panel and a transmission reflector capable of transmitting light and reflecting light. The biological transverse parameters, the biological longitudinal parameters and the diopter of the eyes can be measured by adopting one set of system; the emission system of the refraction measurement system is provided with a checkerboard light spot generation module which is used for generating checkerboard light spots irradiating eyes, so that the problem of poor resolution of annular light spots in the prior art can be avoided, and the speed of judging the refraction state can be improved by comparing the checkerboard light spots formed before and after, so that the measurement accuracy is improved. And the accuracy of the inspection result is also improved.

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 utility model relates to a side light emitting dustproof lamp box which comprises a box body, a soft light plate, dustproof glass and an LED module, the dustproof glass and the soft light plate are attached and connected in a sealed mode, the soft light plate is arranged in an inclined mode, the two ends of the soft light plate are fixed to two obliquely-opposite edges of the box body, and three circuit boards connected in sequence are arranged in the box body. Wherein the two circuit boards at the outer end are attached to the two adjacent side faces of the box body respectively, the circuit board in the middle is parallel to the soft light plate, and the LED module is installed on the three circuit boards. According to the side-light-emitting dustproof lamp box, through the side-light-emitting technology, the surface of the lamp box is illuminated through indirect illumination, the brightness is balanced, and the illumination effect is improved; an effective dustproof structure is adopted, dust can be reduced, and the maintenance problem is solved in a rear opening mode; an efficient light source is adopted, energy consumption is reduced, and the requirements of energy conservation and emission reduction are met.

The invention relates to a mouth scanning instrument with an indicating lamp. The mouth scanning instrument comprises the indicating lamp; the shell is provided with a through hole for the indicating lamp to penetrate through; a light emitting member positioned inside the housing such that light emitted from the light emitting member deviates from a through axis of the through hole; and the light guide part is arranged between the light emitting part and the indicating lamp.

The invention provides an image fusion method, which comprises the following steps of: aligning a plurality of images in a global coordinate system, traversing each pixel point in one of the images, recording the current traversed pixel point as a pixel point A, collecting gray information and binarization information at the pixel point A, and forming a gray information sequence and a binarization information sequence; according to the distribution condition of the background point binarization information and the foreground point binarization information in the binarization information sequence, gray values at the pixel point A are fused; obtaining a gray value of each pixel point under the global coordinate system; according to the method, binarization information is introduced, brightness changes reflected by different images are captured, and targeted fusion is carried out on the gray values of the pixel points in the overlapping area, so that the brightness of the fused image is uniform, detail information is richer, the accuracy of the gray information is improved, and the image quality is improved.

The present invention discloses a zoom security monitoring lens, which includes a first lens to a twelfth lens; the first lens to the twelfth lens each include an object side and an image side; the first lens has a negative refractive power; the second lens has a negative refractive power; the third lens has a negative refractive power; the fourth lens has a positive refractive power; the first lens to the fourth lens are a fixed lens group; the fifth lens has a positive refractive power; the sixth lens has a positive refractive power; the seventh lens has a negative refractive power; the eighth lens has a positive refractive power; the ninth lens has a positive refractive power; the tenth lens has a negative refractive power; the eleventh lens has a positive refractive power; the twelfth lens has a negative refractive power; the fifth lens to the twelfth lens are a variable magnification lens group; the optical imaging lens has only the twelve lenses with refractive power. The present invention has an ultra-high-definition imaging effect, and the imaging pictures of different focal lengths are clear and uniform; the picture will not have blue-purple fringing chromatic aberration, and has a high image color reproduction; the imaging picture has uniform brightness.

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 present application discloses an image processing method and processing device, an electronic device and a readable storage medium. The image processing method includes: obtaining an original image; establishing an image pyramid corresponding to the original image; determining the low-frequency image of the image pyramid as the image to be processed; performing fuzzy processing on the image to be processed to obtain a first image; generating a second image based on the image to be processed and the first image; determining a corresponding first curve based on the histogram distribution of the image to be processed, wherein the first curve is used to increase or decrease the brightness value of the first target area in the second image; processing the second image based on the first curve; and outputting the processed second image when the processed second image meets a preset condition.

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 relates to the technical field of sorting equipment, in particular to a defect manifesting lighting device which comprises a fisheye lens installed in a machine and used for recognizing materials, a light supplementing lamp is arranged in the machine, the irradiation angle of the light supplementing lamp is obliquely arranged in the direction away from the fisheye lens, and the light supplementing lamp and the fisheye lens are arranged at intervals. And residual light of the light supplement lamp irradiates an identification area corresponding to the fisheye lens for light supplement. The method has the effect of improving the visual recognition effect.