48 results about "Point light" patented technology

This invention provides a dust concentration detection device and measurement method for underground drilling in coal mines. It includes a hemispherical glass body with an open top, containing a cleaning unit. The cleaning unit includes a vertically arranged annular cleaning frame, the center of which is collinear with the axial centerline of the glass body. A motor support frame is coaxially mounted on the top of the glass body, forming a spherical body with a hollow top. The bottom of the motor support frame is connected to the glass body, and its vertical top is connected to a coaxially mounted sleeve. An explosion-proof motor is also coaxially mounted inside the sleeve, with its output shaft connected to the top of the cleaning frame. The output shaft drives the cleaning frame to rotate around the central axis of the glass body. A point light source is also coaxially mounted on the inner top of the cleaning frame. A shadow sensor is also installed on the outer bottom wall of the glass body. The device of this invention has a fast response speed and can quickly capture instantaneous shadow changes, thereby achieving real-time continuous measurement.

This invention discloses a vehicle-mounted backlight that eliminates white clumps, relating to the field of vehicle-mounted display devices. It includes a light guide plate, an LED light source disposed on one side of the light guide plate, and an optical film assembly disposed on the light-emitting surface of the light guide plate. The light guide plate has an incident light surface and an emitting light surface. Its back side has a dot array for converting point light sources into surface light sources. The dot array includes several light-guiding dots arranged in a non-uniform pattern, forming at least one directional channel on the back side of the light guide plate for directing airflow during adsorption, thereby reducing air stagnation in the edge areas. The LED light source is arranged in an array, with its density and position matching the high-density areas in the non-uniform dot layout of the light guide plate. The LED light source is used to inject light into the light guide plate. This vehicle-mounted backlight, through its non-uniform dot layout and airflow channel, combined with a light source matching design, eliminates adsorption white clumps at the source, improving display quality and reliability in vehicle environments.

The application discloses a kind of multi-light point anti-interference deformation measuring devices and methods based on stroboscopic spectroscopy, it is related to precision measurement technical field, including point light source, the lower portion of the point light source is provided with cylindrical mirror one, the lower portion of the cylindrical mirror one is provided with linear array sensor one, the linear array sensor one is electrically connected with data acquisition device, the light emitted by the point light source is focused into a line segment after passing through cylindrical mirror one and is imaged on linear array sensor one, the linear array sensor one converts the light signal of focused line segment and outputs digital signal to data acquisition device, in the application, the multi-light point anti-interference deformation measuring device is by applying cylindrical mirror, linear array sensor and point light source, establishes a kind of multi-dimensional displacement sensor measurement system, can realize high-precision, high-resolution and high sampling rate displacement measurement system, the related components are less, the appearance is small and exquisite, maintenance is simple, while cost is lower, system stability is high, more suitable for being used in engineering structure outdoor multi-point monitoring.

The present specification relates to the technical field of mobile phone shell, and provides a partitioned light guide mobile phone shell, which comprises a mobile phone shell body; a plurality of point-to-plane conversion devices are arranged on the mobile phone shell body, and each point-to-plane conversion device is used for converting a built-in point light source into a plane light source display; each point-to-plane conversion device comprises an LED point light source, a light guide assembly and a diffusion assembly; the LED point light source is used for generating point emission light; the light guide assembly is used for internally propagating the point emission light by total reflection and conducting the point emission light to the diffusion assembly in the form of diffuse reflection light; and the diffusion assembly is used for diffusing the diffuse reflection light into a plane light source and transmitting outward. The partitioned light guide mobile phone shell can improve the light emission display effect of the mobile phone shell.

The utility model relates to a kind of floating luminous cable, cable appearance is flat strip, including mutually spaced first conductor and second conductor, for the insulator of separating and wrapping first conductor and second conductor, the cross section of insulator is dumbbell ball type, one air bag is respectively arranged in the upper and lower space of insulator, the periphery of insulator and two air bags is wrapped with a protective layer, the protective layer includes luminophor, the periphery of protective layer is wrapped with a water-blocking layer.Cable self-luminous changes point light source into line light source, so that fish distribution is more uniform.Water-resistant performance has, meet the requirement of long-term use in water, improve use safety, avoid electric leakage hidden danger.Cable can float on water surface, with warning line effect, float with water surface without affecting drag-net fishing and other production activities.Cable structure is symmetrical, simple, compact, processing is convenient, material cost is low, multipurpose is conducive to reducing breeder investment.

The present application relates to the technical field of submerged vegetation restoration, and particularly relates to a river submerged vegetation restoration fixed-point light supplement system with self-cleaning function; the system comprises a waterproof shell, a spectrum-optimized light source module, a secondary optical lens module, an automatic cleaning arm module and an intelligent control core module; wherein: the waterproof shell is used for providing outdoor waterproof protection; the spectrum-optimized light source module is used for outputting an optimized spectrum suitable for photosynthesis of submerged plants; the secondary optical lens module is installed on the spectrum-optimized light source module and is used for adjusting the light angle and light range; the automatic cleaning arm module is used for regularly removing algae and scale on the surface of the waterproof shell to maintain the light transmittance; and the intelligent control core module is used for unified regulation and control of the light source, cleaning action and remote interaction; in the above manner, the effects of spectrum optimization, light adjustment and automatic cleaning are achieved, the photosynthesis and growth of submerged plants are promoted, and the river ecological restoration process is accelerated.

The utility model provides a curtain wall floodlight mapping point light source light box, including by the outside to the inside setting in proper order perforated aluminum plate, light source cavity, backplate, detachably connecting with point light source array layer in the light source cavity, the front of point light source array layer is sealed and is provided with light transmission acrylic light guide layer, the distance between point light source array layer and light transmission acrylic light guide layer is adjustable. Whole detachable connection, simple structure, convenient operation, the spacing between point light source array layer and light transmission acrylic light guide layer is dynamically adjustable, can significantly enhance the flexibility and functionality of optical system, adjust the spacing to change the coupling efficiency of light in the light guide plate, eliminate local bright spot or dark area, realize more uniform light output, through spacing change combination micro prism array, realize the switching of wide-angle diffusion and narrow-angle spotlight, make the mapping effect reach the best state, avoid the problem such as the glare of point light source.

To provide a detection device that can detect colonies more effectively. [Solution] The detection device comprises a light source unit in which multiple point light sources are arranged two-dimensionally, a planar light sensor in which multiple light sensors for detecting light from the light source unit are arranged two-dimensionally, a unit for installing an object to be detected, and a control circuit. The planar light sensor has multiple detection regions corresponding to the arrangement of each of the multiple point light sources. Each detection region has multiple light sensors. When predetermined conditions are met, a process is performed individually for the corresponding point light source and detection region combination to adjust the brightness of the point light source before or after changing its brightness to the adjusted brightness. The predetermined conditions are that one of the two output levels of the detection region obtained before and after changing the brightness of the point light source is higher than a threshold for determining the output of each of the multiple detection regions, and the other of the two output levels of the detection region is lower than the threshold.

This utility model relates to the field of lighting control technology, specifically a signal conversion circuit for point light sources. It includes a main controller, which is connected to a signal converter via a short-circuit protection circuit, a reverse connection protection circuit, a lightning strike protection circuit, and a hot-swap protection circuit. The digital output and input terminals of the signal converter are both connected to an SPI signal driver via the hot-swap protection circuit. The driving terminal of the SPI signal driver is connected to an LED group. The analog output and bus output terminals of the signal converter are also connected to an RS signal output terminal. This signal conversion circuit for point light sources, through the coordinated arrangement of the signal converter, SPI signal driver, and RS485 signal output terminal, can convert SPI to RS485 signals and RS485 to SPI signals, integrating them into the point light source to drive the LEDs. It achieves a control signal transmission distance of 200 meters between points without requiring address writing, facilitating installation and debugging, and enabling long-distance control.

1. Name of the designed product: point light source (P25 I-shaped type). 2. Use of the designed product: the designed product is used for lighting. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

The application discloses a face living body discrimination method, device and system, comprising the following steps: S1, acquiring a face image; S2, controlling the on / off of each point light source in turn, and acquiring the brightest point of the forehead of the detected face image as the corresponding reflection point position in the time period when the point light source is turned on; S3, calculating the face living body decision threshold value M according to the reflection point positions under different point light sources; S4, discriminating the face living body decision threshold value M and the preset face living body threshold discrimination threshold value, and outputting the face living body discrimination result; the face living body discrimination method, device and system can discriminate the attacks such as mobile phone screens, photos and high-definition printed pictures, and are suitable for application scenarios which are sensitive to equipment cost and in which identity recognition errors do not have fatal consequences.

This invention discloses a digit counter based on key-based indicator lights and its counting method, belonging to the technical field of counting devices and training tools. The digit counter includes number keys (1-10), a number key 0, a flashing light key, a decimal point key, lights, a switch, and a control chip. Each number key has a light and a switch; the switch controls the lights of all number keys less than or equal to their number to illuminate, and the lights of number keys greater than their number to turn off. Number key 0 controls the power on / off, the flashing light key controls the flashing mode, and the decimal point key controls the decimal point light's on / off state. The control chip detects key presses and controls the lights' on / off state. Carry and borrow are achieved manually by adding or subtracting 1 from the higher digits, without automatic chip control. The counting method includes power on / off, manual counting, flashing light mode, carry, borrow, multi-digit flash reading training, sequential memory training, software simulation, and mental arithmetic training steps. This invention features a simple structure, convenient operation, quiet and portable design, and strong training appeal. It can replace traditional abacus and mental arithmetic training methods, reducing the learning curve and making it suitable for various scenarios such as mathematics teaching, intelligence training, concentration training, daily calculation, mental arithmetic training, and prevention and treatment of Alzheimer's disease.

This disclosure provides a method for clustering point light sources, a rendering method, and a computer program product. The method includes: acquiring a point light source dataset corresponding to a target geographic region, wherein the point light source dataset includes the identifier, location, and radius of each point light source, and the number of point light sources is two or more; establishing an association between the identifier of each point light source and the geographic grid obtained by pre-dividing the target geographic region based on the location range of each point light source and the geographic grid obtained by pre-dividing the target geographic region; determining the target geographic grid related to the visible range of the view frustum based on the location range of the geographic grid, the view frustum parameters, and the camera pose; using the point light sources associated with the target geographic grid as point light sources to be processed, and clustering the point light sources to be processed based on the view frustum parameters, the location and radius of the point light sources to be processed, and the preset number of blocks of the view frustum clipping plane, wherein one cluster corresponds to one block of the clipping plane, and the number of point light sources in each cluster does not exceed a preset number threshold.

This application provides a backlight module and its control method, as well as a head-up display (HUD) device, relating to the field of HUD technology. It includes an array light source and a focusing component, a homogenizing component, and a TFT screen sequentially located on the light-emitting side of the array light source. The light emitted from the array light source is focused by the focusing component and then homogenized by the homogenizing component to uniformly illuminate the TFT screen. The array light source includes multiple point light sources arranged in an array. By illuminating different point light sources, the TFT screen can be adjusted for zoned display. When sunlight backflow causes the TFT screen temperature to rise, triggering power saving, illuminating some point light sources can achieve localized power saving, reducing the backlight temperature rise and effectively mitigating the temperature increase of the TFT screen. This ensures the screen temperature remains within the normal operating range, preventing any impact on the user's viewing experience.

1. The name of the design product: LED point light source (DG20L). 2. The use of the design product: The design product is used for lighting. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The application relates to a near-infrared lamp group for heating and curing printed matters. The near-infrared lamp group comprises a shell with multiple independent spaces inside, multiple groups of near-infrared point light sources, a main refrigeration pipeline arranged inside the shell, a refrigeration module connected with the main refrigeration pipeline, a heat dissipation module in contact with the same group of near-infrared point light sources and connected with the main refrigeration pipeline, and a backflow pipeline connected with the heat dissipation module and the refrigeration module, and each group of near-infrared point light sources is arranged in an independent space. The near-infrared lamp group for heating and curing printed matters disclosed by the application uses an evaporation heat dissipation mode to transfer heat generated in the working process, the heat dissipation mode has higher heat dissipation efficiency, meanwhile, complex pipeline design and sealing design are not needed, and the use requirement of wide-width printing can be met.

Disclosed are a multifocal point-ring spot generation system and a laser welding method in the technical field of laser processing. The system includes an annular light source, a first collimating lens, an annular beam generation module, and a first reflector arranged sequentially at intervals along a first straight-line direction, and a point light source, a second collimating lens, a first focusing lens, a multi-curvature hollow reflector, and a second focusing lens arranged sequentially at intervals along a second straight-line direction, where the multi-curvature hollow reflector and the second focusing lens are each provided with a through hole at their centers for allowing a beam emitted by the point light source to pass therethrough, and the multi-curvature hollow reflector has an adjustable mirror surface curvature. The system can solve the technical problems of high processing cost and poor stability in deep welding caused by structural constraints of point-ring lasers in the prior art.

A lens (101) comprises a first surface (101) and a second surface (102) on opposite sides of the lens The first surface has a Fresnel pattern for refracting light beams arriving at the first surface in parallel with a geometric optical axis (103) of the lens. The first surface comprises areas such that different ones of the areas are shaped to focus the light beams arriving at the areas so that focus points (107-109) related to the different ones of the areas have different locations in directions perpendicular to the geometric optical axis of the lens. When a light emitting surface of a light source is positioned to coincide with a part defined by the focus points on a geometric plane perpendicular to the geometric optical axis, light beams emitted from the light source are well collimated even if the light emitting surface is not a point-form light source.

This invention relates to the fields of machine vision and optoelectronic display inspection technology, specifically to an intelligent detection system for MiniLED direct-light display lighting defects based on image recognition. The system includes: an image acquisition unit for acquiring surface-emitting images of a MiniLED direct-light display device as initial image data; a light field potential energy initialization unit for receiving the initial image data, extracting the pixel brightness matrix, and converting the pixel brightness matrix into a floating-point light field potential energy map; a light field divergence decoupling unit for generating a light field divergence distribution map; an intrinsic divergence stripping unit for loading a pre-calibrated ideal point spread function convolution kernel of a defect-free emitting unit, simultaneously generating a stripping residual distribution map containing sub-pixel level distortion data; and a defect classification and compensation closed-loop unit for performing conditional classification based on the intrinsic divergence peak matrix and outputting a structured defect correction mask map and the optical compensation reference matrix. This invention effectively avoids the defect coordinate drift problem in traditional solutions.

The invention relates to an optical gate (100) for determining a velocity vector (V) of a spherical projectile (10), which comprises a sensor array (20) defined by a row of light detecting sensors (22) arranged next to each other, and an illuminating array (30) defined by a row of point light sources (32) arranged next to each other and illuminating towards the sensors (22), wherein the illuminating array (30) is arranged opposite the sensor array (20). The illuminating array (30) and said sensor array (20) being arranged in a common plane (S), and an optical diffuser plate (40) being arranged between said illuminating array (30) and said sensor array (20), said light detecting sensors (22) defining a detection area (42) on said diffuser plate (40) parallel to said sensor array (20), and the optical gate (100) comprises an electronic control unit (36) configured to consecutively flash the point light sources (32) at predetermined time instants at high frequency, and an electronic measuring unit (26) for processing the signals generated by the light detecting sensors (22). The measuring unit (26) being configured to determine the brightness distribution and total brightness along the detection area (42) based on the data generated by the sensors (22) of the sensor array (20). The invention also relates to methods for determining the velocity vector (V) of a spherical projectile (10).

1. Name of the product in this design: Point Light Source (GLMD215). 2. Purpose of this design: for lighting and decoration. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

This application discloses an image processing method, apparatus, and electronic device, belonging to the field of image processing technology. The image processing method includes: obtaining a point spread function (PSF) corresponding to a first image; wherein the PSF is determined based on the PSF corresponding to a captured image, and the PSF corresponding to the captured image is determined based on the diffuse light spots formed by point light sources in the captured scene in the captured image; the similarity between the capture parameters of the first image and the capture parameters of the captured image is greater than or equal to a similarity threshold; and performing deconvolution processing on the first image based on the PSF to obtain a second image.

The application discloses a lens, an indirect lighting device and a diffuse scattering soft light indirect lighting system, relates to the technical field of diffuse scattering light illumination, and solves the technical problem that the power requirement of an indirect lighting system for an LED lamp is relatively high, energy cost is increased, and the lighting effect is poor. The lens comprises a lens body, the lens body is a central symmetrical structure, and the lens body comprises a light collecting structure, a total reflection structure, a transmission structure and a projection structure; the light collecting structure is used for accommodating the LED lamp and for constraining and guiding light rays to be output to the transmission structure and the total reflection structure; the total reflection structure forms reflected light and collimates output of stray light of the LED lamp outside a preset angle; the transmission structure performs quasi-parallel light output on light rays within the preset angle; and the projection structure uniformly distributes the light rays adjusted by the total reflection structure and performs light intensity shaping. The application forms a strip-shaped light source from a point light source of a single LED light source, and makes uniform light emission on the whole illumination surface.

This invention provides a light strip and an air conditioner unit incorporating it, relating to the field of air conditioner technology, and is designed to solve the problem of concentrated brightness in the nighttime indicator lights of existing air conditioner units. The light strip includes a light source and a light guide. The light guide is configured to receive light emitted from the light source and conduct it to the outside of the air conditioner unit. The light guide has an inner surface, an outer surface, and a light-emitting surface connecting the inner and outer surfaces. Along a direction perpendicular to the light-emitting direction of the light guide, an edge light guide, a central light guide, and an edge light guide are sequentially arranged on the inner and / or outer surfaces. The central light guide is planar, and the edge light guides have several concave dots. The light source is configured to emit light towards the central light guide. The air conditioner unit includes the aforementioned light strip. This invention enables the point light source to diffuse evenly, effectively solving the problem of concentrated brightness in the nighttime indicator lights of air conditioner units.

The utility model discloses a railway LED testing device: the shell has integrated the test unit, and the test unit includes the power input terminal for accessing alternating current, the alternating voltage stabilizing power supply for converting the alternating current input into stable alternating current, the voltage regulator for voltage regulation to alternating voltage stabilizing power supply output voltage, the railway signal point light unit for converting the voltage regulator output voltage into three gears voltage, the test lamp holder for installing LED lamp, the input side connection power input terminal of alternating voltage stabilizing power supply, and the output side of voltage stabilizing power supply is connected to the input end of railway signal point light unit through voltage regulator, and the output end of railway signal point light unit is connected to the main filament pin, the vice filament pin, the public pin of test lamp holder respectively, and the different models and the factory of the LED lamp to be tested can be tested, and the performance index of the LED lamp to be tested under the different voltage state of railway signal point light unit once and twice can be detected.

This invention discloses a fused red dot sighting system, comprising an infrared mirror group, a liquid crystal display screen, a prism, a first lens group, a reflector, a second lens group, a beam splitter, and an eye point arranged sequentially along the optical path. The prism has an inclined surface facing the first lens group, and a red dot light source is arranged above the inclined surface. This allows the light from the red dot light source and the infrared light from the infrared mirror group to be fused on the prism before being transmitted to the beam splitter and entering the human eye. The infrared mirror group captures an image of the external target, which is then displayed on the liquid crystal display screen. The image on the liquid crystal display screen and the light emitted by the red dot light source are fused on the prism. The fused light passes through the first lens group to complete the first imaging, then passes through the reflector to effectively shorten the volume, and finally passes through the second lens group to reach the beam splitter. At this point, the fused optical path of the infrared light and the red dot light is deflected on the beam splitter and enters the eye point to achieve a second imaging.

According to an aspect, a detection device includes: a light source part in which point light sources are arranged; a planar optical sensor in which optical sensors are arranged; an object placement member; and a control circuit. The planar optical sensor has detection areas corresponding to an arrangement of the point light sources. Each detection area includes more than one optical sensor. When predetermined conditions are satisfied, a process, in which luminance of the point light source before or after luminance change is set as adjusted luminance of the point light source, is individually performed for each combination of the point light sources and the detection areas; and the predetermined conditions are that one of two output levels of each detection area obtained before and after changing the luminance of each point light source is higher than a threshold, and that the other thereof is lower than the threshold.

Device for direct optical recording of safety-relevant objects, such as at least skin impressions, comprising a layer sequence: - a top layer (401) with a bearing surface (102) for a safety-relevant object (101, 105), - an aperture layer with non-transparent and transparent areas (304) to limit the angles of incidence of light that is remitted from the object (101, 105) through the contact surface (102) into the layer sequence, - a sensor layer (406) with pixels (307) arranged in a two-dimensional grid, each of which has a light-sensitive element (303) and a transparent transmission area (304), wherein the light-sensitive elements (303) can only detect light coming from the direction of the contact surface (102) and each light-sensitive element (303) of the sensor layer (406) is assigned exactly one aperture of the aperture layer, - a substrate (407) as the carrier of the layer sequence and - an illumination layer (409) for emitting illumination light (201) which illuminates the object (101, 105) through the support surface (102), characterized by the fact that - the aperture layer is designed as a contrast aperture layer (403) with contrast apertures (301) for a predominant transmission of light that is remitted from parts of the object (101, 105) resting on the support surface (102) without an air gap (106), wherein ◯ each contrast aperture (301) is designed as a non-transparent area of ​​the contrast aperture layer (403) and has a distance to the associated light-sensitive element (303) that is defined by means of a spacer layer (404) of selectable thickness between sensor layer (406) and contrast aperture layer (403), and ◯ the contrast diaphragm (301) located at a distance from the light-sensitive element (303) has a non-transparent area above the light-sensitive element (303) that is at least as large as an active area (305) of the light-sensitive element (303) and is arranged such that reflected light (204) falling on the light-sensitive element (303) at small angles of incidence from both object parts (103) resting without an air gap (106) and object parts (104) resting with an air gap (106) is largely blocked for the light-sensitive element (303) by means of the non-transparent contrast diaphragm (301), and only an excess of reflected scattered light (204) from parts (103) of the object (101) resting without an air gap (106) in a differential angle range (207) with large angles of incidence is detected in the light-sensitive element. (303) is permitted and - the illumination layer (409) contains a large number of point light sources (306), which emit in the direction of the contact surface (102) in such a limited angular range in order to suppress total internal reflection at the contact surface (102) of the top layer (401).

The application discloses a pilling risk prediction method based on fabric surface optical response characteristics, and particularly relates to the technical field of fabric detection, which comprises the following steps: irradiating a to-be-detected fabric with a point light source in a darkroom environment, collecting a first image and a second image, pre-processing the images, calculating a fiber bundle dispersion index, a fiber end lifting density index and a surface texture regularity attenuation index to form a quantitative characteristic parameter set; constructing a support vector machine classification model, training the quantitative characteristic parameter set of a fabric sample with a known pilling grade, and inputting the quantitative characteristic parameter set of the to-be-detected fabric; and according to the relative position relationship between the characteristic parameters and the classification hyperplane, the support vector machine classification model outputs a discrete risk grade value corresponding to one of the four grades of no pilling, slight pilling, moderate pilling or severe pilling. The application realizes the pilling risk prediction of the fabric by combining the multi-angle optical response characteristics with the machine learning model.