1476 results about "Light emitter" patented technology

A wearable system can include an electronic device configured to measure one or more physiological parameters of a patient and a wearable device configured to operably position the electronic device. The electronic device can have at least one light emitter and at least one light detector and be configured to measure at least a pulse oximetry measurement. The wearable device can have a main body with a cavity configured to position the electronic device, a securement portion connected to the main body and configured to secure the main body to the patient, and storage component configured to store patient identification data associated with the patient. When the electronic device and the wearable device are secured to one another, the patient identification data can be transferred from the wearable device to the electronic device.

A job-site tool in one aspect of the present disclosure includes: a display; a flexible printed circuit; and a control circuit. The display is visible tool from outside and includes at least one surface light emitter. The flexible printed circuit includes conductive traces. The at least one surface light emitter is on the flexible printed circuit and is electrically connected to the conductive traces. The control circuit is electrically connected to the display via the conductive traces.

A vehicular driver monitoring system includes a vehicular interior rearview mirror assembly having a mirror head that accommodates a mirror reflective element. A video display is disposed behind the mirror reflective element and operable to display video images captured by a rearward viewing camera of the vehicle. A driver monitoring camera and a near infrared light emitter are accommodated by and move in tandem with the mirror head. The near infrared light emitter is accommodated within the mirror head so that, with the mirror head adjusted relative to the mounting base to set the rearward view of the driver of the vehicle, a beam of near infrared light emitted by the near infrared light emitter is directed toward a driver's region of the vehicle. The driver monitoring camera is disposed adjacent to the video display screen so as to not view through the video display screen.

A method for determining physiological characteristics is provided. The method involves causing light to be emitted by one or more light emitters toward a tissue of a user. The method involves obtaining samples of transmitted and / or reflected light. The method involves determining photoplethysmography (PPG) data based on the obtained samples. The method involves providing the PPG data as an input to a trained machine learning model, wherein the trained machine learning model has been trained, using a training set that comprises matched samples of electrocardiogram (ECG) data and PPG data. The method involves providing a blood pressure of the user based on an output of the trained machine learning model.

The invention provides a method for improving the illumination stability of perovskite through post-treatment. The method comprises the following steps: S1, preparing a perovskite illuminant; s2, grinding and diffusing; and S3, inducing exposure and passivation of photoinduced defects. According to the invention, the light stability of the perovskite illuminant synthesized in a temperature solid state can be improved, so that the perovskite illuminant is applicable to wider application fields.

The invention relates to the technical field of plastic injection molding, in particular to a multi-point glue feeding method for a thick-wall light-emitting body of an automobile tail lamp and an injection molding mold, and the method comprises the steps that product parameters are obtained in response to a detection signal, and a correlation coefficient, a guide angle and a reference track are determined according to the product parameters; injecting the magnetic ball and the detection liquid from a pouring gate position at a guide angle based on a track control method, and collecting a moving track; when the moving track does not coincide with the reference track, an adjusting coefficient is determined according to the moving track and the reference track, and the guide angle is corrected; when the moving track coincides with the reference track, defining the guide angle as a target angle; the injection molding angle is determined according to the target angle and the correlation coefficient, molten plastic is injected from the sprue position, and then a connection image of the product is collected; and the injection molding angle is corrected according to the existence condition of the cross color feature in the connection image. The device has the effect of avoiding color crossing of two materials in a product.

Disclosed is a three-dimensional reconstruction method based on kinematic calibration of line structured light point set individualization, and the method includes the following steps: rigidly assembling an area-array camera and a line structured light emitter, and mounting the assembly on a motion platform; calibrating structural parameters of the motion platform of a measuring device by using a reference radius of a standard sphere and line structured light scanned data; registering a spatial position relationship of a line structured light point set by taking a calibrated spherical center position of the standard sphere and the reference radius of the standard sphere as constraints; controlling the five-axis motion platform to move and acquiring scanned data of a measured member under different poses; and completing high-quality three-dimensional model reconstruction of the measured member subjected to multi-pose scanning by using the scanned data and a real-time point cloud registration matrix.

A light emitting module including a circuit substrate and light emitters arranged side by side thereon. A first light emitter can include a first layer stack, a second light emitter includes a second layer stack, and a third light emitter includes a third layer stack, and each stack can include a first conductivity type semiconductor layer and a second conductivity type semiconductor layer. A light transparent layer can be configured to transmit light emitter by the first, second, and third light emitters, and a reflector including a white material can be located adjacent to the first, second, and third light emitters. A stack direction in each of the first, the second and the third light emitters is not perpendicular to an upper surface of the light transparent layer.

The invention provides a mixed light source white balance method, device and equipment and a computer readable storage medium, and the method comprises the steps: for any frame of scene image of a mixed light source scene, determining the 3d distance between a target pixel point in the scene image and each illuminant in a plurality of illuminants in the mixed light source scene; determining a white balance parameter when each luminous body independently acts in the mixed light source scene; and traversing each pixel point in the target pixel points, and executing the following operation: determining the corresponding white balance parameter of the pixel point in the mixed light source scene according to the 3d distance between the pixel point and each luminous body and the white balance parameter when each luminous body independently acts in the mixed light source scene. According to the method provided by the invention, the white balance parameter can be accurately and effectively adjusted for the mixed light source scene, so that the quality of the display effect is improved.

A biometric wearable device (e.g. finger ring or smart watch) has optical sensors to measure body oxygenation level, hydration level, glucose level, heart rate, heart rate variability, and / or blood pressure. Light from light emitters is transmitted through body tissue and changes in the light are analyzed. The angles and / or vectors along which the light is transmitted through body tissue can be automatically changed by the device in order to scan different tissue regions and / or different tissue depths.

A method and device for disinfecting a body of water including the steps of detecting a microbial characteristic of a body of water via a sensor and comparing the microbial characteristic to a target threshold. Upon determining the microbial characteristic is below the target threshold, the method further includes the steps of emitting, via a light emitter in a device, a disinfecting light comprising a wavelength range of 380-420 nanometers (nm) into the body of water, determining, via a controller, a concentration and frequency of chemicals to deposit into the body of water based on the detected microbial characteristic, and depositing, via a mechanism in a device, a chemical into the body of water at the determined concentration and frequency.

The invention provides a light color cast correction method and device based on a target area, and is applied to the technical field of data processing. The method comprises the following steps: acquiring a light original image and a shooting environment parameter through an image acquisition module; a light source point is positioned by using a YOLO algorithm, a white connected domain is extracted by combining an HSV threshold value, a luminous body contour is obtained through closed contour search, and whether correction is needed or not is judged according to the proportion of 80%; a U-Net model with specific parameters is adopted to segment outer-layer halo, and a color reference annular area is obtained through XOR operation; on the basis of pixel data of the region, through formula calculation, abnormal value filtering and class logistic regression function fitting, deducing and compensating an HSV (Hue, Saturation and Value) parameter; and performing non-target area invariance on the color cast area of the inner layer of the light source, and finally outputting a corrected image and verifying the effect, thereby realizing accurate color cast correction.

A method of imaging an internal surface of a conduit, the method including deploying an inspection assembly within an internal volume of a conduit, the inspection assembly having a camera and a lighting array including a plurality of light emitters; illuminating a region of interest on said internal surface using the lighting array; and capturing image data of the region of interest using the camera, the image data including spatial data and intensity data at a plurality of different narrowband wavelength ranges of light.

A sensor module for Raman spectroscopy includes a sensor package which encloses an application specific integrated circuit (ASIC), a light emitter arrangement, a light detector arrangement and a filter arrangement. The light emitter arrangement is electrically connected to the ASIC and operable to emit light with multiple excitation wavelengths to excite Raman scattering in an external probe to be placed outside of the sensor module. The light detector arrangement is operable to generate sensor signals from incident light emitted back from the external probe due to the Raman scattering. The filter arrangement is operable to filter the incident light according to a target passband. The ASIC is operable to drive the light emitter arrangement at the excitation wavelengths to shift a Raman spectral band of the external probe into the passband of the filter arrangement.

A pad-surface determination method that can appropriately determine a surface property of a polishing pad including a condition of protrusions formed on a polishing surface of the polishing pad is disclosed. The pad-surface determination method includes: irradiating a target area in the polishing surface with a plurality of lights from a plurality of light emitters at different incident angles; receiving a plurality of reflected lights from the target area by an imaging device; generating a plurality of images corresponding to the different incident angles by the imaging device; and determining the surface property of the polishing pad based on at least one of the plurality of images. A protrusion is formed on the polishing surface in the target area.

An image forming apparatus includes a light emitter; a photoconductor to form a latent image on a surface of the photoconductor; a deflector to deflect light at a write start timing; an optical sensor; and circuitry. The optical sensor detects the scanning light scanning, with one of multiple sensitivities. The circuitry adjusts a light intensity of the emitted light and the write start timing based on the detection signal; switches from the one of multiple sensitivities to other of multiple sensitivities or from the other of multiple sensitivities to the one of multiple sensitivities based on the light intensity adjusted; and determines whether to perform a color misregistration correction based on a shift in the write start timing caused by a switch from the one of multiple sensitivities to the other of multiple sensitivities or from the other of multiple sensitivities to the one of multiple sensitivities.

Example embodiments relate to light detectors for nearby object detection in light detection and ranging (lidar) devices. An example embodiment includes a lidar device. The lidar device includes a light emitter configured to emit a light signal at a first time. The lidar device also includes a light detector configured to detect the emitted light signal. Additionally, the lidar device includes a biasing circuit configured to modify a detector bias using a bias signal. The bias signal ramps the detector bias from a first bias level at the first time to a second bias level at a second time. The second time is separated from the first time by a ramp duration. The ramp duration is sufficient to prevent any internal feedback within the lidar device caused by the emitted light signal from saturating the light detector or detection circuitry associated with the light detector.

Disclosed herein is an organic light emitting diode device. The organic light emitting diode device includes an anode, a cathode and a light emitting layer. The light emitting layer has a structure where a blue light emitter and a red / green simultaneous light emitter are stacked. The red / green simultaneous light emitter has a structure where a red light emitter and a green light emitter are stacked. The red light emitter includes a red host compound, and in some embodiments, the red host compound includes a spirobisfluorene-based compound where an aryl amino group is substituted. The green light emitter includes a green host compound, and the green host compound includes a mixture of a first green host compound and a second green host compound. In some embodiments, the first green host compound includes a biscarbazole-based compound and the second green host compound includes an indolocarbazole-based compound.

A system for monitoring and establishing mechanical properties of a formation may include a strain sensing system and a controller. The strain sensing system may include an elongated fiber, a light emitter, and a detector. The elongated fiber may be or may include a fiber optic cable. Monitoring and establishing mechanical properties of a wellbore may include determining a stress applied to a casing of a length of the wellbore and sensing, with the strain sensing system, a strain that may be resultant from the stress applied to the casing. Based on the stress applied to the casing and the sensed strain, the controller may determine a value related to a mechanical property of the formation extending along the wellbore.

The invention provides a glare-free even-light-ray strip lamp, and belongs to the technical field of strip lamps, the glare-free even-light-ray strip lamp comprises a lamp shell connected with a ceiling through a steel frame, a slot is formed in the bottom of the lamp shell, a lamp is inserted in the slot, the lamp is divided into a mounting body and a light emitting body, the light emitting body is mounted on the lower side of the mounting body, and the light emitting body is arranged in the slot. The mounting body is connected with the slot through a clamping mechanism, and a conductive mechanism is arranged in the clamping mechanism. The problems that when the line lamp is installed, serious space and time sequence conflicts exist between wire connection operation and lamp fastening operation, namely wire connection needs to be completed while lamp fastening is completed, and the whole installation process is tedious and low in efficiency are solved.

Various embodiments of solid state transducer (“SST”) devices are disclosed. In several embodiments, a light emitter device includes a metal-oxide-semiconductor (MOS) capacitor, an active region operably coupled to the MOS capacitor, and a bulk semiconductor material operably coupled to the active region. The active region can include at least one quantum well configured to store first charge carriers under a first bias. The bulk semiconductor material is arranged to provide second charge carriers to the active region under the second bias such that the active region emits UV light.

A system for calibrating the light sensitivity of a camera includes a light emitter for emitting a light pulse, a fiber splitter for receiving the light pulse via an input port and providing first and second portions of the light pulse to respective first and second output ports, and a light collector for receiving the first portion from the first output port and converting the first portion to a first signal representative of a light characteristic of the first portion. A first fiber optic cable connects the light emitter and the input port, a second fiber optic cable connects the first output port and the light collector, and a third fiber optic cable has a first cable end connected with the second output port and a second cable end for emitting the second portion of the light pulse for capture by the camera. A related method is also provided.

A medical visualisation system including a main component including an image sensor and a light emitter; a first auxiliary component configured to transmit image data based on the signals; a second auxiliary component configured to receive signals from the main component and to transmit image data based on the signals, the second auxiliary component including a second memory having embedded therein data; and a video processing apparatus including a high frequency wireless transceiver configured to establish an image data communication channel with the high frequency wireless transceiver of the first auxiliary component or with the high frequency wireless transceiver of the second auxiliary component and to receive the image data with the image data communication channel, wherein the first auxiliary component is configured to, based on the data, cause adjustment of one or more components of the main component or the video processing apparatus.

The invention relates to an impact tool and an impact wrench. In a corner impact tool, a working part can be properly illuminated by a lamp. This impact tool is provided with: a grip section extending in the front-rear direction; a motor housing part disposed in front of the grip part; a motor disposed inside the motor housing part; a main shaft disposed in front of the motor, extending in a direction intersecting the front-rear direction, and rotated by the motor; a hammer which is rotated by the main shaft; an anvil which is hit by the hammer in the rotational direction; a tip tool holding part disposed at the lower end of the anvil; a hammer housing that accommodates the main shaft and the hammer; and a light emitting body held in the hammer case.

The application relates to a gas-liquid two-phase flow detection method, which comprises the following steps: vertically emitting light sources to a pipeline where gas-liquid two-phase flow is located through two light emitters arranged at intervals; collecting light signal data of the gas-liquid two-phase flow at different positions in the pipeline through light monitors arranged correspondingly to the light emitters; determining effective data, splitting the effective data into gas phase data and liquid phase data, determining a gas phase effective value and a liquid phase effective value; determining a platform area, dividing the platform area into a gas phase platform area, a liquid phase platform area and a gas-liquid transition area based on the gas phase effective value and the liquid phase effective value; taking adjacent first gas-liquid transition area, gas phase platform area, second gas-liquid transition area and liquid phase platform area as one gas-liquid cycle; determining a time interval of the same gas-liquid cycle through two light monitors; and calculating various parameters of the gas-liquid two-phase flow according to the time interval of the same gas-liquid cycle through two light monitors and the time interval of each platform area in the same gas-liquid cycle.

Glasses are disclosed which can be used to produce substrates for flat panel display devices. The glasses may be substantially alkali free. The glasses are doped with one or more transition metals (e.g., Ni, Co) and exhibit reduced optical transmittance to suppress light leakage from the display device and / or to improve contrast. The display device may be a bottom emission display device or a top emission display device. The display device may be a tiled display device. Glasses disclosed herein may be used, for example, as a baseplate having a plurality of display substrates disposed thereon, a display substrate (e.g., backplane) having a plurality of light emitters disposed thereon, a glass cover plate, or combinations thereof.

A personal mobility assistance device includes a frame that includes a first ridged component moveable relative to a second ridged component by a linkage mechanism. The first rigid frame component has a first light emitter mounted in a first opening in the first rigid frame component and the second rigid frame component has a second light emitter mounted in a second opening in the second rigid frame component. The first light emitter is connected to a first component conductor portion of a conductor within the first rigid component and the second light emitter connected to a second component conductor portion of the conductor within the second rigid component. A conductor connection mechanism within the linkage mechanism includes a plurality of contacts that electrically connect the second component conductor portion to the first conductor portion when the linkage mechanism is in at least one position.

The invention relates to the technical field of visible light communication, and discloses an intelligent lamp data transmission system based on visible light communication. The system comprises an optical signal processing module, a transmission management module and a terminal control module. The optical signal processing module collects and processes the visible light signal and outputs a light intensity space coding signal; after the transmission management module receives the signal, the signal is decoded by the signal analysis unit to obtain an original data stream signal and a channel interference characteristic signal, the channel optimization unit processes the original data stream signal and the channel interference characteristic signal to obtain an optimal modulation parameter signal, and the transmission strategy unit outputs a dynamic bandwidth allocation signal; in the terminal control module, an adaptive modulation execution unit adjusts the driving parameters of the light emitter according to the optimal modulation parameter signal, a lamp array control unit adjusts the working state of a lamp light-emitting unit and collects a real-time link state signal, and a link monitoring module outputs a communication quality index. The system is suitable for an intelligent illumination and data transmission fusion scene.

An apparatus (100) for monitoring a fluid pipe (1), the apparatus comprising a cable (11) disposed within the pipe (1). The cable (11) comprises a plurality of sensing fibres (10, 502, 508, 510), wherein the plurality of sensing fibres (10, 502, 508, 510) are spliced together (504, 512, 506) at their respective ends to form a continuous looped configuration (500) within the cable (11). The apparatus further comprises a light emitter (101) for introducing light pulses into the continuous looped configuration (500), a light detector (110) for detecting backscattering of the light pulses from the continuous looped (configuration 500) and outputting a backscattering signal in response thereto as well as a processing unit (103) configured to process the backscattering signal to identify backscattering signal features characteristic of particular events within or in a vicinity of the fluid pipe (1).

A wearable display system includes one or more emissive micro-displays, e.g., micro-LED displays. The micro-displays may be monochrome micro-displays or full-color micro-displays. The micro-displays may include arrays of light emitters. Light collimators may be utilized to narrow the angular emission profile of light emitted by the light emitters. Where a plurality of emissive micro-displays is utilized, the micro-displays may be positioned at different sides of an optical combiner, e.g., an X-cube prism which receives light rays from different micro-displays and outputs the light rays from the same face of the cube. The optical combiner directs the light to projection optics, which outputs the light to an eyepiece that relays the light to a user's eye. The eyepiece may output the light to the user's eye with different amounts of wavefront divergence, to place virtual content on different depth planes.