28 results about "Dominant wavelength" patented technology

In an embodiment an optoelectronic component includes an active layer sequence configured to emit electromagnetic radiation of a primary wavelength and a ceramic converter element arranged in a beam path of the active layer sequence and configured to convert the primary wavelength at least partly into a secondary wavelength, wherein the ceramic converter element includes a quantum efficiency of at least 90%, a phosphor and a metal oxide powder, wherein the phosphor includes a doped garnet, wherein the ceramic converter element includes Ce and / or Gd doped Y3Al5O12 embedded in a matrix chosen from undoped Y3Al5O12 or undoped Y3Al5O12 and Al2O3, or Ce and / or Gd doped Lu3Al5O12 embedded in a matrix chosen from undoped Lu3Al5O12 or undoped Lu3Al5O12 and Al2O3, and wherein the phosphor and the metal oxide powder are free of second phases.

A fluid separation device includes a centrifugal separator configured to receive a centrifugal separation chamber of a disposable fluid flow circuit, a pump system configured to convey a fluid into the centrifugal separation chamber and to remove a separated fluid component from the centrifugal separation chamber via an outlet, a color-based interface monitoring system configured to determine an interface position between separated fluid components continuously flowing through the centrifugal separation chamber based on dominant wavelength measurements of layers of separated fluid components during a centrifugal separation procedure, and a controller configured to measure the dominant wavelengths of the layers, calculate a duration as a color time for each measured dominant wavelength, set target color times, calculate error signals and calculate control signals to adjust the pump system to control the flow rate and interface position.

A light-emitting device includes a semiconductor stack, an insulating reflective structure having an opening, and an electrode located on the insulating reflective structure and filled in the opening to electrically connect to the semiconductor stack. The semiconductor stack having includes a main surface, and a side surface inclined to the main surface. The light-emitting device has a dominant wavelength and a peak wavelength. The insulating reflective structure includes: a first part located on the main surface and having a first thickness; and a second part located on the side surface and having a second thickness different from the first thickness. The second part of the insulating reflective structure has a reflectivity of more than 90% for the dominant wavelength or the peak wavelength within an incident angle of 0° to 30°.

The application discloses a kind of LED light-emitting diode light color detection analysis method and system, it is related to LED detection technical field, including: light color acquisition module, for obtaining the spectral data generated in the lighting process of target LED;Timing modeling module, for in the continuous preset time period after target LED starts to emit light, multiple spectral data points are collected at fixed time intervals, main wavelength, color coordinates and fitting color temperature value are calculated to obtain, form multiple time light color parameter sequence, and construct time series model based on the sequence, output time series model and corresponding original parameter sequence.The application realizes the automatic judgment of the stable state of LED light emission by constructing the change curve of light intensity and color coordinates and introducing convergence trend analysis mechanism, effectively avoids the false determination caused by early data instability, and improves the representativeness and accuracy of detection data.

According to an aspect of the present invention, provided may be a light-emitting device comprising: a substrate; a first light-emitting element disposed on the substrate and generating light of a first emission spectrum having a first dominant wavelength, by a current supplied through the substrate; and a second light-emitting element disposed on the substrate and generating light of a second emission spectrum having a second dominant wavelength and at least partially overlapping the first emission spectrum, by the current supplied through the substrate, wherein the intensity of the first dominant wavelength and the intensity of the second dominant wavelength are different from each other.

The invention relates to a medical transfer system (14, 18) for use with a medical pump (1), at least comprising: a tube (14) which is provided and designed to be inserted into a tube receptacle (12) or pump section of the pump (1) in sections in order to transfer a fluid from a reservoir to a patient, and a tube clamp (18) which is provided on the tube (14) and has a predetermined colour and / or optical marking, wherein the tube clamp (18) is provided and designed to be inserted into the pump (1) at least in sections and to be irradiated with a light beam (34e) at / with main wavelengths (42a, 42b, 42c, 42d) using a light source (34) of the pump (1) so that the light (34r) reflected or reflecting off the tube clamp (18) is received by a photodetector arrangement (38; 138; 238) of the pump (1) and separated into individual signals (46a, 46b, 46c, 46d) at the main wavelengths. The invention further relates to a medical clamp module, to a medical pump, and to a method for detecting a medical transfer system in a medical pump.

The application provides a wavelength multiplexing filtering isolation communication method, device and medium, and relates to the technical field of communication. The method comprises the following steps: adjusting a current filtering receiving parameter of a wavelength selective optical filter according to a specified wavelength dynamically allocated; the wavelength selective optical filter receives a wavelength multiplexing optical signal through the current filtering receiving parameter, so as to obtain a current filtering receiving optical signal from the wavelength multiplexing optical signal, and the wavelength multiplexing optical signal is composed of the specified wavelength optical signal through dynamic routing; obtaining a wavelength deviation between a current main wavelength of the current filtering receiving optical signal and the specified wavelength, and compensating the current filtering receiving optical signal according to the wavelength deviation to obtain the specified wavelength optical signal. The application saves resources through wavelength multiplexing, obtains accurate signals through filtering compensation, and enhances signal safety through dynamic allocation of the specified wavelength and dynamic routing.

The present application relates to the technical field of water quality detection, in particular to a boiler water quality hardness on-line detector and method based on Lambert-Beer law, which comprises an equipment shell box, an optical module, a fluid control module, a self-cleaning module, a compensation algorithm unit, a data transmission unit, a touch control screen and a warning unit; the optical module comprises an LED light source and an optical probe, the LED light source is used for providing light required for detection, and the optical probe is used for receiving light and collecting absorbance signals. In the boiler water quality hardness on-line detector and method based on Lambert-Beer law, the dual-wavelength anti-interference design eliminates error sources: the optical module adopts a combination of a 520±5nm main wavelength and a 700±10nm reference wavelength, and cooperates with the compensation algorithm unit to calculate and correct the absorbance, so that the interference caused by suspended solids and bubbles in the boiler water sample can be accurately deducted.

This application relates to the field of handheld laser rangefinder technology, and in particular to a handheld laser rangefinder and its testing method. The handheld laser rangefinder body includes a shell, a dual-wavelength laser emitting module, an ambient light intensity sensor, an FPGA time-domain signal processing unit, a temperature compensation system, an LCD screen, and control buttons. The dual-wavelength laser emitting module includes a laser and a light receiver disposed at the end of the shell, and an 808nm / 905nm dual-band laser diode disposed inside the shell. By incorporating the dual-wavelength laser emitting module, the ambient light intensity sensor, the FPGA time-domain signal processing unit, and the temperature compensation system, the handheld laser rangefinder can switch the main wavelength in real time via the ambient light sensor. The switching logic is as follows: when the ambient light sensor detects an illuminance greater than 5000 lux, the 905nm band is automatically activated; when the illuminance is less than or equal to 5000 lux, the 808nm band is used, thereby reducing sunlight interference.

A light emitting apparatus includes: a substrate; a first light emitting device disposed on the substrate and configured to generate light of a first emission spectrum having a first dominant wavelength by a current supplied through the substrate; and a second light emitting device disposed on the substrate and configured to generate light of a second emission spectrum having a second dominant wavelength and at least partially overlapping with the first emission spectrum. An intensity of the first dominant wavelength and an intensity of the second dominant wavelength are different from each other.

A display for a head-worn device includes a planar array of micro-light-emitting diodes (micro-LEDs), a sensor, and a driver. The driver is configured to operate the display in at least two modes. A first mode uses a first current density to produce a first brightness and a first range of colors. In response to the sensor detecting a high ambient light condition, the driver can switch the display to a second, high-brightness mode. In the second mode, the driver uses a second, higher current density to produce a second brightness greater than the first brightness. This increase in current density causes a predictable shift in the dominant wavelength of the micro-LEDs, resulting in a second range of colors that is different from the first. This intentional trade-off between color accuracy and brightness ensures that virtual content remains visible to a user in bright environments.

A reconfigurable device is provided for splitting optical beams. The device includes an input port configured to receive an input beam including at least two primary wavelengths, a tunable splitter configured to separate the input beam into at least two beams via at least two routes corresponding to the at least two primary wavelengths, wherein each of the at least two routes is configured to propagate one of the at least two primary wavelengths of the input beam, wherein the tunable splitter includes a bottom electrode, a substrate on the bottom electrode, core segments arranged on the substrate, a top layer, support segments to connect the substrate and the top layer, a top electrode on the top layer, a controllable refractive index layer arranged to fill gaps between the substrate, the support segments, and the top layer; and at least two output ports configured to transmit the at least two beams propagated via the at least two routes.

The application discloses a light-emitting device which emits mixed light, wherein the mixed light is mixed by deep red light, green light, sapphire blue light and white light; the color temperature of the white light is 4000K; the main wavelength range of the deep red light is 645nm-670nm, the peak wavelength range is 650nm-675nm, and the half-peak width range is 18nm-40nm; the main wavelength range of the green light is 510nm-540nm, the peak wavelength range is 515nm-545nm, and the half-peak width range is 30nm-65nm; the main wavelength range of the sapphire blue light is 439nm-475nm, the peak wavelength range is 435nm-470nm, and the half-peak width range is 18nm-40nm; and the main wavelength range of the white light is 570nm-610nm, the peak wavelength range is 600nm-640nm, and the half-peak width range is 150nm-225nm. The light-emitting device is mainly used in the technical field of light sources.

Method for characterizing an optoelectronic device and associated characterization device. The present invention relates to a method for characterizing an optoelectronic device (10) capable of emitting an electromagnetic beam in a band of operating wavelengths, the method comprising the following steps: emission of an electromagnetic beam by the optoelectronic device (10), performance, by a detection unit (20), of a series of measurements on a portion of the electromagnetic beam emitted in a band of secondary wavelengths included in the band of operating wavelengths and excluding the band of primary wavelengths, and determination, by a processing unit (22), of characteristics of the optoelectronic device (10) as a function of the series of measurements performed, at least one characteristic being obtained for a band of secondary wavelengths.the determined characteristics allowing evaluation of the operation of the optoelectronic device (10). Figure for the abstract: 1,

A device may include a broadband LED flip chip that generates broadband light of dominant wavelength from about 420 nm to about 480 nm and a FWHM from 25 nm to 50 nm; and at least one photoluminescence layer covering a light emitting face of the broadband LED flip chip; wherein the broadband LED flip chip comprises a broadband InGaN / GaN multiple quantum wells LED chip comprising multiple different wavelength quantum wells in its active region that generate multiple narrowband light emissions of multiple different wavelengths, where broadband light generated by the broadband LED flip chip includes a combination of the multiple narrowband light emissions, and where at least one photoluminescence material layer comprises a first photoluminescence material which generates light with a peak emission wavelength from 490 nm to 550 nm; and a second photoluminescence material which generates light with a peak emission wavelength from 600 nm to 680 nm.

This application provides a design method, apparatus, and electronic device for a superlens-based optical system, belonging to the technical field of optical systems. The method obtains a discrete configuration of the superlens' nanostructure based on an initial phase distribution at the dominant wavelength, and then optimizes the discrete configuration and discrete phase distribution of the superlens' nanostructure. This results in a superlens with higher imaging quality over a wider spectrum than superlenses obtained using traditional optimization methods. The design method, apparatus, and electronic device for this superlens-based optical system optimize the discrete phase distribution of the superlens, effectively suppressing differences in imaging performance of the optical system containing the superlens at different wavelengths.

The invention discloses an LED module light color visual detection method and system based on multispectrum, and the method comprises the steps: initializing to a preset detection gear, the spectral range of the preset detection gear comprises a first buffer region of a wavelength lower limit neighborhood and a second buffer region of an upper limit neighborhood, and the upper limit of the first buffer region is smaller than the lower limit of the second buffer region; acquiring spectral characteristic parameters of the LED module; if the main wavelength is the main wavelength, the relation between the main wavelength and the upper limit and the lower limit of the current gear is judged, if the condition is met, a low-level gear or a high-level gear is switched to, and a corresponding buffer area threshold value is verified after switching; if the statistical value is the wavelength distribution statistical value, the relationship between the statistical value and a preset threshold value is compared, and if the condition is met, corresponding gear switching is carried out; and finally, switching the detection to the decided target gear, and synchronously adjusting the integral time and the gain parameter. According to the invention, the adaptive capability and stability of the detection process are improved, and misjudgment and measurement fluctuation during multi-model switching are reduced.

A light-emitting device having a pixel comprising a first non-tuneable sub-pixel configured to emit light at a first non-tuneable wavelength and a tuneable sub-pixel configured to emit light at a tuneable wavelength. The tuneable sub-pixel comprises a primary light-emitting material configured to emit light at a primary wavelength in response to a primary electrical input; and a tuning element configured to modify the primary wavelength to a secondary wavelength, wherein the secondary wavelength is tuneable, in response to a secondary electrical input.

The invention relates to the technical field of material characterization, in particular to a local lattice hydrogen concentration characterization method and device based on dislocation instability wavelength. The method comprises the following steps: acquiring a microstructure image of a metal sample serving under the hydrogen-containing and dislocation climbing condition, and extracting dislocation in a fluctuating state in the microstructure image; extracting and analyzing the unstable wavelengths of all dislocations in the to-be-represented region to obtain dominant wavelengths; the instability wavelength is a straight-line distance between vertexes of adjacent recesses or adjacent bulges in a dislocation, and the dominant wavelength is an instability wavelength corresponding to a main peak position in a probability distribution diagram of all instability wavelengths; and based on the dominant wavelength, determining the local lattice hydrogen concentration in the to-be-represented region. According to the technical scheme, the local lattice hydrogen concentration around dislocation can be quantitatively represented.

A lighting system comprising: (a) a 1st channel comprising a 1st light emitter for emitting a 1st light having a dominant wavelength from 460nm to 500nm; (b) a 2nd channel comprising a 2nd light emitter for emitting a 2nd light having a dominant wavelength from 540 nm to 590nm; (c) a 3rd channel comprising a 3rd light emitter for emitting a 3rd light having a peak wavelength from 590 to 640 nm; (d) a 4th channel comprising a 4th light emitter for emitting a 4th light having a peak wavelength from 400 to 440nm; (e) a controller for driving said 1st, 2nd, 3rd, and 4th channels independently to cause said lighting system to emit white light comprising a combination of two or more of said 1st, 2nd, 3rd, or 4th lights.

This invention provides a light-emitting device comprising: a blue light unit for emitting blue light; a green light unit for emitting green light; a red light unit for emitting red light; and a warm white light unit emitting light with a dominant wavelength greater than or equal to 570 nm and less than or equal to 600 nm. The color coordinates of the warm white light unit and the red light unit are located on opposite sides of the Planck locus. The blue light unit, green light unit, warm white light unit, and red light unit can cooperate to emit mixed white light and are used to adjust the color temperature of the mixed white light. By setting four types of light-emitting units, the light-emitting device achieves the technical effect of reducing the number of light sources while still achieving color and color temperature adjustment of the lamp. Moreover, the luminous intensity of the four types of light-emitting units can be adjusted independently, making it easier to adjust the color of the final output light of the light-emitting device. The mixed white light emitted by the light-emitting device at various color temperatures all have good color rendering indexes.

The application discloses a five-channel light-emitting device which emits mixed light, wherein the mixed light is mixed by sapphire blue light, mint color light, cyan light, white light and red light; the color temperature of the white light is 4000K; the main wavelength of the sapphire blue light is 445-475nm, the peak wavelength is 440-470nm, and the half-peak width is 15-30nm; the main wavelength of the mint color light is 535-575nm, the peak wavelength is 528-568nm, and the half-peak width is 80-150nm; the main wavelength of the cyan light is 491-511nm, the peak wavelength is 488-508nm, and the half-peak width is 20-60nm; the main wavelength of the white light is 570-610nm, the peak wavelength is 600-640nm, and the half-peak width is 150-225nm; and the main wavelength of the red light is 615-640nm, the peak wavelength is 620-650nm, and the half-peak width is 15-35nm. The application mainly relates to the technical field of light sources.

This application discloses a low-power four-primary-color LED display method and apparatus based on spectral wavelength redshift. The method includes: acquiring the tristimulus values ​​of each pixel in a target image and calculating its color coordinates; determining the landing point result based on the color coordinates and the color gamut overlap topology; the color gamut overlap topology is constructed based on the color coordinates and dual color mixing modes, including non-overlapping regions and redundant overlapping regions; the dual color mixing modes include mode A composed of red, green, and blue, and mode B composed of red, green, and auxiliary primary colors; the auxiliary primary colors employ a spectral wavelength redshift strategy, with the dominant wavelength of the auxiliary primary color being greater than that of the blue primary color; selecting the corresponding color mixing mode based on the landing point result; when the color coordinates fall into the redundant overlapping region, using a differential evolution algorithm to solve for the optimal driving current combination; and driving the corresponding LED channel for display. This application achieves wide color gamut coverage and low-power operation of the LED display system while producing the same visual brightness.

This invention provides a light-emitting device, a light-emitting apparatus, and a display device, relating to the fields of lighting and display technology. The light-emitting device includes: a substrate; a first light-transmitting layer located on one side of the substrate; a second light-transmitting layer located on the side of the first light-transmitting layer away from the substrate; a first electrode located on the side of the second light-transmitting layer away from the first light-transmitting layer; at least one light-emitting layer located on the side of the first electrode away from the second light-transmitting layer; and a second electrode located on the side of the at least one light-emitting layer away from the first electrode. The light-emitting device emits light in a direction along the second light-transmitting layer towards the first light-transmitting layer, and the refractive index of the first light-transmitting layer is greater than that of the second light-transmitting layer. This light-emitting device can achieve a red-shift of the dominant wavelength, expanding the application range of light-emitting devices.

The present invention provides a glass sheet having soda-lime-silica glass composition with a high visible light transmittance (LtC) of at least 89%; with a dominant wavelength (DW) from about 490 to 505 nanometers and purity (Pe) of no more than 1% for control thickness of 5.66 mm, and methods of making the same. The glass composition comprising a low iron raw material, a total iron oxide (Fe2O3) of 0.02 to 0.06 wt. %, ferrous (FeO) from 0.006 to 0.02 wt. %, redox (FeO / Fe2O3) from about 0.30 to 0.55; Cr2O3 from about 0.3 to 10 ppm, TiO2 from about 50 to 500 ppm; SnO2 from about 10 to 500 ppm and a critical amount from about 0.10 to 0.25 wt. % of SO3. The low content of iron oxide is achieved by the partial substitution of regular raw materials by low iron raw materials, with a complete substitution of regular dolomite by a low iron dolomite with a maximum content of 0.020 wt. % Fe2O3.

The light emitting device includes a light emitting element having a dominant wavelength in a range of 430 nm or more and 500 nm or less, and a fluorescent material that is excited by light emitted from the light emitting element and has a light emission peak wavelength in a range of 507 nm or more and 660 nm or less, wherein the light emitting device emits light having a dominant wavelength in a range of 490 nm or more and 500 nm or less, wherein the light emitting device has an S / P ratio, which is the ratio of a luminous flux in photopic vision to a luminous flux in scotopic vision, being 6.5 or less, and wherein the light emitting device has a light emission intensity in the light emission peak wavelength of the light emitting element that is greater than that in the light emission peak wavelength of the fluorescent material.

A light emitting device comprises a light emitting diode (LED) chip having a dominant wavelength in a range from about 390 nm to about 560 nm, an encapsulant in optical communication with the LED chip, and coated phosphor particles dispersed in the encapsulant. Each of the coated phosphor particles comprises (a) a luminescent particle having a first refractive index at the dominant wavelength, and (b) an optical coating on the luminescent particle, where the optical coating has a second refractive index at the dominant wavelength. The second refractive index is between the first refractive index and a refractive index of the encapsulant at the dominant wavelength.