8707 results about "Light guide" patented technology

The invention discloses a light guide plate defect detection method and system based on a neural network, and particularly relates to the technical field of machine vision detection, and the method comprises the following steps: aiming at the problem of image instability of a light guide plate in a dynamic transmission or rotation process, continuously collecting an image sequence and extracting time domain features; and performing interference judgment in combination with the inter-frame consistency prediction coefficient and a first threshold to realize accurate identification of the abnormal image frame. For an abnormal image frame, further correcting the recognition credibility of the abnormal image frame by adopting a confidence adjustment and fusion mode, and meanwhile, introducing a frequency domain transformation and image enhancement strategy to compensate detail loss caused by motion blur; according to the method, inter-frame consistency analysis, confidence fusion regulation and control and frequency domain fuzzy recognition and compensation mechanisms are introduced, abnormal judgment and image quality restoration of the light guide plate image in the dynamic scene are realized, the recognition accuracy and stability of the neural network model on the defect type, position and confidence are improved, and the false detection and omission ratio is effectively reduced.

The invention relates to the field of liquid crystal display, and discloses a liquid crystal display screen dynamic contrast optimization method and system, and the method comprises the following steps: collecting ambient light intensity and backlight module temperature parameters in real time, and combining with image content entropy analysis to dynamically generate a non-uniform backlight partition grid; a brightness diffusion physical model is constructed based on hardware parameters such as the refractive index of the light guide plate and the LED spacing, and the optimal brightness of each partition is solved by adopting a temperature self-adaptive improved particle swarm algorithm; driving voltage is generated through piecewise nonlinear gamma mapping and inverse function iterative calculation, and the driving voltage is adapted to the nonlinear response characteristics of the backlight module; a hardware accelerator is used for executing a diffusion equation and optimization calculation in parallel, and model parameters are dynamically adjusted in combination with feedback of an optical sensor, so that a closed-loop control link is formed. According to the method, the contrast performance and the dynamic scene adaptability of the display screen are comprehensively improved through dynamic partition adaptive to the environment, an optimization algorithm driven by a physical model and real-time processing accelerated by hardware.

To provide a game machine capable of attaining improvement in operability of operation means.SOLUTION: A game machine comprises: first operation means; second operation means disposed at a position separated from the first operation means; operation detection means capable of detecting an operation; a speaker; a speaker cover which has a plurality of sound releasing holes that face the speaker; a light emitting member arranged on the back side of the speaker cover; and a light guide member having a light incident part where the light emitted by the light emitting member is incident. Either when the first operation means is operated or when the second operation means is operated, the operation detection means is able to detect the operation. A light emitting performance in which the light emitting member is caused to emit light so that a sound release region in the speaker cover that faces the speaker appears to be luminous is executed.SELECTED DRAWING: Figure 334

A fiber-optic light guide is provided. The light guide includes plurality of optical fibers and an enveloping material. The plurality of optical fibers define a flexible fiber bundle. The flexible fiber bundle has a first diameter and a length along a longitudinal axis. The enveloping material encloses the plurality of optical fibers at one end of the flexible fiber bundle and over at least a part of the length to define a rigid portion. The plurality of optical fibers in the rigid portion are fused with one another. The flexible fiber bundle has a modified or formed cross-sectional geometry in a region of the enveloping material.

The invention discloses an image denoising and self-adaptive enhancement method based on pixel discretization and illumination guidance, and relates to the technical field of image processing, and the method comprises the steps: carrying out the down-sampling and noise reduction of an input image, and obtaining a preliminarily denoised image through the deconvolution operation, fuzzy pixel discretization and residual serialization; estimating an illumination component from the preliminarily denoised image by using an illumination estimation network; calculating a reflection image based on the estimated illumination component and the preliminarily denoised image according to an image enhancement theory; based on a dynamic splicing mechanism, splicing the reflection image and the illumination component in the channel dimension to obtain a spliced image; and with keeping of image details and brightness information as a criterion, denoising and enhancing are carried out on the spliced image through a reflection denoising network, and a denoised and enhanced image is output. According to the invention, high-quality recovery of low-illumination images is realized, and the intelligent level of an electric power inspection system is improved.

To provide a game machine capable of attaining improvement in operability of operation means.SOLUTION: A game machine comprises: first operation means; second operation means disposed at a position separated from the first operation means; operation detection means capable of detecting an operation; a connection that connects the first operation means and the second operation means; a speaker; a speaker cover which has a plurality of sound releasing holes that face the speaker; a light emitting member arranged on the back side of the speaker cover; and a light guide member having a light incident part where the light emitted by the light emitting member is incident. Either when the first operation means is operated or when the second operation means is operated, the operation detection means is able to detect the operation. The connection has a portion to be detected, and the operation detection means is able to detect that an operation is performed when the position of the portion to be detected is changed.SELECTED DRAWING: Figure 334

The invention discloses a light guide plate dot density detection method, system and device and a storage medium, and relates to the technical field of light guide plate dot density detection, and the method comprises the following steps: converting a historical light guide plate image into a historical light guide plate binary image based on a graying processing method and a binary processing method; obtaining a standard dot area and a dot area range based on the historical light guide plate binary image; obtaining a detection normal fitting area and a detection incomplete fitting area based on the standard dot area, the dot area range and the detection light guide plate binary image; calculating and obtaining the dot density of the detection light guide plate based on the detection normal fitting area and the detection incomplete fitting area; the method is used for solving the problem that errors are generated in dot density calculation due to the fact that edge incomplete dots are not analyzed and calculated in an existing light guide plate dot density calculation technology.

To provide a game machine capable of attaining improvement in operability of operation means.SOLUTION: A game machine comprises: first operation means; second operation means disposed at a position separated from the first operation means; operation detection means capable of detecting an operation; a speaker; a speaker cover which has a plurality of sound releasing holes that face the speaker; a light emitting member arranged on the back side of the speaker cover; and a light guide member having a light incident part where the light emitted by the light emitting member is incident. Either when the first operation means is operated or when the second operation means is operated, the operation detection means is able to detect the operation. At least one of the first operation means and the second operation means is formed in a flat shape. A light emitting performance in which the light emitting member is caused to emit light so that a sound release region in the speaker cover that faces the speaker appears to be luminous is executed.SELECTED DRAWING: Figure 334

The invention relates to the technical field of nuclear radiation imaging, in particular to a radiation array detector, a back scattering imaging system and a back scattering imaging method. The radiation array detector comprises an X-ray photon absorption structure which comprises high-strip-shaped scintillators and low-strip-shaped scintillators which are alternately arranged, the high-strip-shaped scintillators are used for detecting back scattering X-ray photons incident at all angles, the low-strip-shaped scintillators are used for accurately determining the incident direction of the X-ray photons through the collimation effect, and the high-strip-shaped scintillators and the low-strip-shaped scintillators are used for detecting the incident direction of the back scattering X-ray photons; after X-rays enter the photon absorption structure, the high-strip-shaped scintillators and / or the low-strip-shaped scintillators receiving X-ray photons generate scintillation photons. The silicon photomultiplier array is connected with the high strip-shaped scintillator and the low strip-shaped scintillator through a light guide and is used for converting scintillation photons into photoelectric signals; and the position and energy information coding circuit is used for carrying out position and energy information coding on the photoelectric signals generated by the silicon photomultiplier array. According to the invention, the detection efficiency and the direction identification capability of the back scattering X-ray can be effectively improved.

A photoacoustic catheter adapted for placement within a blood vessel having a vessel wall includes an elongate shaft, a balloon and a photoacoustic transducer. The elongate shaft can extend from a proximal region to a distal region. The elongate shaft can include a light guide that is configured to be placed in optical communication with a light source. The balloon is coupled to the elongate shaft, and can be configured to expand from a collapsed configuration suitable for advancing the photoacoustic catheter through a patient's vasculature to a first expanded configuration suitable for anchoring the photoacoustic catheter in position relative to a treatment site. The photoacoustic transducer can be disposed on a surface of the balloon and in optical communication with the light guide. The photoacoustic transducer can include a light-absorbing material and a thermal expansion material.

The invention relates to a glass assembly and a vehicle. The atmosphere lamp comprises a plurality of light-emitting units which are sequentially arranged on the glass body in the lengthwise direction of the atmosphere lamp. The light-emitting unit comprises a light guide part, a protective shell and a lamp panel. The light guide member is fixedly connected to the glass body. The protective shell is detachably connected with the light guide part, and the protective shell covers the light guide part. The lamp panel is arranged in the protective shell and connected with the protective shell. When any light-emitting unit breaks down, the protective shell and the lamp panel of the light-emitting unit which breaks down can be rapidly detached, the lamp panel can be replaced or maintained, and therefore the whole piece of glass does not need to be detached and replaced, replacement and maintenance operation of the lamp panel is simple, and working efficiency is high.

The invention relates to a GIS partial discharge optical detection method and device, and a medium. The method comprises the following steps: collecting a GIS partial discharge optical signal through a light guide rod, and carrying out the preprocessing of the GIS partial discharge optical signal; self-adaptive wavelet packet decomposition is carried out on the preprocessed signals, noise signals are separated through a self-adaptive threshold value adjustment algorithm, multi-scale time-frequency characteristics are extracted from the signals after noise separation, and according to the self-adaptive wavelet packet decomposition, a wavelet basis function is selected in a self-adaptive mode according to statistical indexes of the extracted signals so as to carry out wavelet packet decomposition; and constructing a lightweight convolutional neural network model, classifying the extracted multi-scale time-frequency features, and identifying a partial discharge signal. Compared with the prior art, the method has the advantages that the anti-interference capability is high, weak partial discharge signals can be effectively extracted, and the real-time requirement is met.

A lighting device disclosed in an embodiment of the invention comprises a substrate; a light source disposed on the substrate; and a light guide member disposed on the substrate and the light source, wherein the light guide member includes an exit surface and a first reflective surface facing the exit surface, the first reflective surface includes a plurality of reflective portions having different heights with respect to an upper surface of the substrate, and each of the plurality of reflective portions may include a plurality of first surfaces inclined with respect to the upper surface of the substrate.

The invention relates to the field of intelligent guitars, in particular to a single-tone playing and singing method of an intelligent guitar and the intelligent guitar, and the method comprises the following steps: a mobile terminal APP or a cloud server sends a song data packet to the intelligent guitar through wireless communication; analyzing the data packet by the intelligent guitar, lightening backlight LEDs of chord touch keys on a neck fingerboard according to a time sequence, and guiding the user to press the position by the left hand; the user is guided to shift the position by the right hand through a display screen or light; after a user pokes an appointed key according to a display screen or light prompt, corresponding audio information in a data packet is triggered, light guides the user to press a corresponding chord touch key and a single-tone module at correct time, the guitar playing proficiency of a beginner is improved, a silica gel plucking sheet of the single-tone module can simulate the real string distance, and the guitar playing experience is improved. Compared with a traditional string-free intelligent guitar, the string-free intelligent guitar has the hand feeling closer to that of a traditional guitar, and single-tone playing is achieved.

The invention relates to a light-emitting roller shutter device which comprises a guide assembly. The light source is fixed to the guide assembly; the shading display assembly can move along the guide assembly to achieve unfolding or rolling and comprises a light guide layer, and the light guide layer comprises a light inlet end opposite to the light source and is provided with a plurality of light outlet microstructures; the light-emitting roller shutter device is configured to enable light rays emitted by the light source to enter the light guide layer through the light inlet end when the shading display assembly moves along the guide assembly, and the light rays pass through the light outlet microstructures, change the propagation direction and are emitted out of the surface of one side of the light guide layer. A special coupling structure design between the light source and the light guide piece is provided for the light-emitting roller shutter, so that the roller shutter can be lightened to emit light at any rolling position.

The present invention provides a mini travel power conversion socket, including: a face cover, a light guide post, a door spring, a main body, and a bottom cover. This invention provides a mini travel power conversion socket equipped with British plugs, European plugs, and American / Australian rotatable adapter plugs; the socket section is designed with a universal socket panel that can accommodate plugs from multiple countries. The product is compact and miniaturized, with a socket safety protection door set in the middle area between the face cover and the main body. It can support AC plugs / sockets capable of carrying 10 A high current. Inside the hardware socket bracket above, there is an integrated L / N pole socket hardware guide plate that is widened and thickened. Below the hardware connection bracket, there is an integrated plug hardware guide plate, along with a positioning block that can independently extend individual plugs.

A backlight module for a lighting keyboard having a specific function key comprises a lighting board, a light guide panel and a shielding sheet. The shielding sheet, the light guide panel and the lighting board are stacked from top to bottom. The lighting board has first and second light emitting units. The light guide panel has first and second light guide holes. The first light emitting unit is in the first light guide hole. The second light emitting unit is in the second light guide hole. The shielding sheet has a blocking portion. The blocking portion overlaps in projection with the first light emitting unit and the second light emitting unit. The light guide panel has a light guide panel slot. The light guide panel slot overlaps in projection with the blocking portion and a boundary of a keycap projection area of the specific function key.

The utility model discloses a plane detachable light guide plate display module and a household appliance display panel, belonging to the household appliance display screen technology field, comprising a diaphragm, a shading filling layer, a circuit board and a frame body which are successively arranged from top to bottom, the circuit board is connected with the frame body, and the frame body is provided with a connecting part which is detachably connected with a display screen. The plane detachable light guide plate display module is connected with the panel shell of the household appliance through screws or buckles capable of being repeatedly disassembled and utilized, when the panel shell is damaged in the process of being installed on the household appliance, only the panel shell is scrapped, the internal plane detachable light guide plate display module can be completely disassembled, and therefore the panel shell is not damaged. The plane detachable light guide plate display module is installed in a qualified panel shell for the second time, the plane detachable light guide plate display module can be reused, cost is greatly saved, and the problem of pain points in the assembling process is solved.

The light guide injection mold comprises a movable mold assembly, the movable mold assembly comprises a movable mold plate provided with an inner sliding block and a plurality of insert pins, and the insert pins are arranged in the inner sliding block in a penetrating mode and are in sliding fit with the inner sliding block; the supporting plate drives the inner sliding block to move, so that the inner sliding block is separated from the connecting part on the light guide strip and the positioning column; a top plate; the ejection type movable mold core is fixedly connected to the ejection plate and provided with a cavity surface used for forming the connecting end, and when the ejection plate acts, the ejection type movable mold core is driven to move in the direction away from the movable mold plate; and the movable insert is fixedly mounted on the movable mold plate and embedded in the ejection type movable mold core, and the movable insert is provided with a tooth groove structure used for forming light distribution textures. According to the light guide injection mold provided by the invention, by introducing the design of the inner sliding block for oblique demolding, the insert pin structure for penetrating and supporting and the movable mold core for step-by-step ejection, precise protection and sequential demolding of a light guide strip connecting part, a positioning column and light distribution textures are realized, the risk of structural damage is remarkably reduced, and the demolding efficiency and the forming quality are improved.

An image light guide for conveying a virtual image including a first surface and a parallel second surface, an in-coupling diffractive optic arranged along the first surface and / or the second surface, wherein the in-coupling diffractive comprises a first zone having a first set of diffractive features and a second zone having a second of diffractive features, and an out-coupling diffractive optic arranged along the first surface and / or the second surface, wherein the out-coupling diffractive optic comprises a first area having two or more zones and a second area having two or more zones. Wherein an imaginary axis is oriented along a centerline of the out-coupling diffractive optic, image-bearing light in-coupled into the waveguide by the first zone of the in-coupling diffractive optic is operable to propagate across the imaginary axis to the first area of the out-coupling diffractive optic, and image-bearing light in-coupled into the waveguide by the second zone of the in-coupling diffractive optic is operable to propagate across the imaginary axis to the second area of the out-coupling diffractive optic.

The utility model discloses a vehicle body exterior trimming assembly and a vehicle, and relates to the technical field of vehicle engineering. The vehicle body exterior trimming assembly comprises an exterior trimming plate and a light-transmitting plate, wherein at least partial area of the exterior trimming plate is a light-transmitting area; and the light-emitting assembly is arranged on the inner side of the outer decoration plate and comprises a light guide plate and a light source piece emitting light rays towards the light guide plate, at least part of the light guide plate corresponds to the light-transmitting area, and the light source piece is a flexible light bar. The vehicle body exterior trimming assembly enables the outer surface of a vehicle body to obtain light-emitting elements, vehicle modeling is more scientific and technological, and appearance quality is improved. When the area of the light-emitting area is large or bright, the outline of the vehicle body can be presented, and convenience and sense of safety are improved. And a warning function can be obtained. The light source piece is a flexible light bar, so that the processing difficulty and the assembling difficulty are reduced; external stress can be easily absorbed, and the effects of vibration reduction and collision buffering are achieved; the light-emitting diode has the advantages of mature production process, low cost, good light-emitting stability, high reliability and long service life.

An optical member includes a light-transmitting light guide body and a light-shielding back cover. The light guide body has an incident part including a plurality of protruding incident prism portions, a reflective surface adjacent to the incident part, and an exit surface facing the incident part and the reflective surface. Each of the plurality of incident prism portions has an incident surface that allows an external scenery light to enter the inside of the light guide body and an adjacent surface adjacent to the incident surface. The back cover covers at least an entire area of the reflective surface of the light guide body across a gap, and abuts against the adjacent surface of a rear prism portion that is one of the plurality of incident prism portions adjacent to the reflective surface.

The embodiment of the invention provides a grating structure, a light guide device and head-mounted display equipment. Wherein the grating structure comprises a plurality of grating units and filling materials, the grating units are periodically arranged at intervals, the space between the adjacent grating units is filled with the filling materials, and the filling materials cover the top surfaces of the grating units; wherein the grating unit has a first refractive index n1, the filling material has a second refractive index n2, and the grating structure meets the condition that the absolute value of the difference between n1 and n2 is smaller than or equal to 0.5. According to the grating structure provided by the embodiment of the invention, the diffraction efficiency of the diffraction behavior can be reduced through the new design of the grating structure, and rainbow lines are prevented from being formed in human eyes.

The invention discloses a radar-wave-transparent light-emitting vehicle logo lamp, and relates to the field of vehicle lamps. The radar-wave-transparent light-emitting vehicle logo lamp comprises a base, an outer face cover connected to the top of the base, a circuit board fixed between the base and the outer face cover, a light guide plate fixed between the circuit board and the outer face cover and a heating film connected to the surface of the side, away from the base, of the outer face cover. The middle of the base protrudes upwards to form a radar wave-transparent area and a containing groove located in the bottom face of the radar wave-transparent area, and the containing groove is used for containing a millimeter wave radar sensor for emitting radar. The circuit board is provided with a first opening for a radar wave-transparent area to pass through and a plurality of LED lamps arranged at intervals in the circumferential direction. The top face and the bottom face of the light guide plate are attached to the outer face cover and the radar wave-transparent area respectively, and the surface of the side, away from the base, of the light guide plate is provided with a vehicle logo. According to the light-emitting vehicle logo lamp capable of transmitting the radar waves, the radar waves can pass through the light-emitting vehicle logo lamp for detection while the vehicle logo identification is lightened, the influence on radar wave detection is reduced to the maximum extent, and meanwhile the radar wave detection effect can be prevented from being influenced by ice and snow.

The invention discloses a backlight module which comprises the following characteristics. The peep-proof sheet is arranged on a transmission path of a light beam of the light source assembly. The light guide plate is arranged on the side, back to the light source assembly, of the peep-proof piece and provided with a light incident face, a surface and a plurality of optical microstructures. The surface of the light incident surface faces the peep-proof sheet and is connected with the light incident surface. The optical microstructures are recessed or protruded out of the surface and are respectively provided with a first convex curved surface, a second convex curved surface and a fillet. The first convex curved surface and the second convex curved surface stand on the surface, and the fillet connects the first convex curved surface and the second convex curved surface. The first included angle between each first convex curved surface and the surface ranges from 30 degrees to 70 degrees, and the curvature radius of the fillet ranges from 0.001 mm to 0.005 mm. When the optical microstructure is recessed in the surface, the first convex curved surface faces the light incident surface. When the optical microstructures protrude out of the surface, the first convex curved surface is back to the light incident surface.

The embodiment of the utility model discloses a backlight module and display equipment, and relates to the technical field of display. The backlight module comprises a light guide part and a lamp panel. The lamp panel comprises a circuit board, a white light-emitting unit, a red-green-blue light-emitting unit, a power line and a driving chip. The white light emitting unit includes a first blue light emitting chip and a photoluminescence portion. The red-green-blue light-emitting unit comprises a plurality of light-emitting chips, and the plurality of light-emitting chips comprise a red light-emitting chip, a green light-emitting chip and a second blue light-emitting chip. The first power supply wire is connected with the first blue light-emitting chip, the second blue light-emitting chip and the green light-emitting chip, and the second power supply wire is connected with the red light-emitting chip. In the width direction of the circuit board, the power line and the driving chip are arranged on the two sides of the light-emitting unit respectively. According to the embodiment of the invention, the light-emitting effect of the lamp panel can be improved, and the connection convenience of the light-emitting unit, the power supply wire and the driving chip is improved.

The invention relates to the technical field of laser micropore processing, and discloses a device for processing a blade film hole by femtosecond laser, which sequentially comprises an infrared femtosecond laser for emitting laser, a blade hole forming device for guiding light and processing laser beams and a blade fixing device for fixing a blade to be processed along a beam transmission path, the blade hole forming device comprises a laser incidence port, a compact scanning galvanometer system for adjusting a laser scanning path, a rotating assembly capable of rotating around an optical axis and used for adjusting the emitting angle of a laser beam, a focusing system for adjusting laser focusing, a light guide assembly for adjusting light beam incidence and a light guide reflection assembly. The lower end of the scanning galvanometer system is connected with the upper end of the rotating assembly, the upper end of the focusing system is connected with the lower end of the rotating assembly, the lower end of the focusing system is connected with the upper end of the light guide assembly, and the lower end of the light guide assembly is connected with the light guide reflection assembly. And the infrared femtosecond laser, the compact scanning galvanometer system and the focusing system are all controlled by the control system. According to the system, blade film hole machining in a complex track can be achieved.

A display apparatus and a light source module thereof including a light guide plate, a first light source and a plurality of optical microstructures are provided. The first light source is disposed on one side of a first light incident surface of the light guide plate, and is adapted to emit a plurality of first light beams toward the first light incident surface. The optical microstructures are disposed on a first surface of the light guide plate, and each has a first optical surface facing the first light source, a first structural surface and a second structural surface. A first included angle provided between the first optical surface and the first surface of each of the optical microstructures gradually changes as a distance from the first surface increases. The first structural surface and the second structural surface of each optical microstructure are perpendicular to the first light incident surface.

A display selection button 10 comprises a light projecting unit 21, a light guide plate 13, a light receiving units 22, a control unit 30, and a printed sheet 14 and a LED 25. The light guide plate 13 has an incident surface 13a to which the light emitted from the light projecting unit 21 is incident, a plurality of prisms 13d that reflect incident light toward the side approaching or touching a finger and are provided at positions corresponding to push buttons 10c, and an exit surface 13b that emits the light reflected in the direction in which the finger approaches. The light receiving units 22 receive light emitted from the exit surface 13b and reflected from a finger. The control unit 30 detects the approach of a finger depending on the amount of light received by the light receiving units 22. The printed sheet 14 displays the desired numerals. The LED 25 emits light for displaying the desired numerals in the printed sheet 14.