85 results about "Dominant wavelength" patented technology

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 invention discloses a light color detection analysis method and system for an LED, and relates to the technical field of LED detection, and the system comprises a light color collection module which is used for obtaining spectrum data generated in the lightening process of a target LED; the time sequence modeling module is used for collecting a plurality of spectral data points at fixed time intervals within a continuous preset time period after the target LED starts to emit light, calculating to obtain a dominant wavelength, a color coordinate and a fitting color temperature value, forming a multi-moment light color parameter sequence, and constructing a time sequence model based on the sequence, and outputting the time sequence model and the corresponding original parameter sequence. According to the method, the change curve of the light intensity and the color coordinates is constructed, and a convergence trend analysis mechanism is introduced, so that the LED light-emitting stable state is automatically judged, wrong judgment caused by unstable early data is effectively avoided, and the representativeness and the accuracy of detection data are improved.

A light emitting device is provided. The light emitting device includes a blue light unit, configured to emit blue light; a green light unit, configured to emit green light; a red light unit, configured to emit red light; and a warm white light unit, configured to emit warm white light. A dominant wavelength of the warm white light is in a range from 570 nm to 600 nm. A color coordinate of the warm white light unit and a color coordinate of the red light unit are respectively located at opposite sides of the Planckian locus. The blue light unit, the green light unit, the red light unit and the warm white light unit are configured to cooperate to emit mixed white light and are configured to adjust a color temperature of the mixed white light.

A white light emitting device (backlight) comprises: a Multiple Quantum Well (MQW) dual-wavelength LED; and a narrowband photoluminescence material that generates red light with a peak emission wavelength from about 620 nm to about 660 nm. The MQW dual-wavelength LED comprises at least one first Quantum Well (QW) that generates blue light with a dominant wavelength from 440 nm to 470 nm and at least one second Quantum Well (QW) to generate green light with a dominant wavelength from 520 nm to 540 nm.

To provide an on-board lighting device that can secure visibility irrespective of brightness around a vehicle and is suppressed in making an occupant uncomfortable.SOLUTION: An on-board lighting device to be mounted to a vehicle includes: a light source unit 20 configured to be capable of emitting first light having a main wavelength within a range of 480 nm or more and 600 nm or less and second light that is white light; and a control unit 40 for controlling the light source unit 20. The control unit 40 controls the light source unit 20 so as to emit first light when brightness around the vehicle is larger than a reference value and emit second light when the brightness is equal to or smaller than the reference value.SELECTED DRAWING: Figure 1

To highly accurately control the degree of roughening during a matting process.SOLUTION: A modification method for a curable resin comprises a precuring step of applying first light having a principal wavelength of at least 200 nm on a light emission spectrum of a light source toward a surface of the curable resin under an atmosphere having an oxygen concentration of 0.3 vol% or more and 21.0 vol% or less. A precuring device that executes the modification method comprises a first light source that emits first light having a principal wavelength of at least 200 nm on a light emission spectrum, and applies the first light toward the surface of the curable resin.SELECTED DRAWING: Figure 2

A light-emitting device includes a substrate, a wiring, a light-emitting element configured to emit light having a main wavelength in a range from 500 nm to 560 nm, and a diffusion member. When chromaticity x and chromaticity y of an emission color of the light-emitting device are measured in each of first and second measurement planes in a range in which an angle at the center of the outer shape is in a range from ±60° with reference to a perpendicular line passing through the center of the diffusion member, an average value α of a difference between a maximum value and a minimum value of a chromaticity difference Δx of the chromaticity x measured in the first measurement plane and a difference between a maximum value and a minimum value of a chromaticity difference Δx of the chromaticity x measured in the second measurement plane is less than 0.0024.

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.

The invention provides a light-emitting device which is bright in both scotopic vision and photopic vision and reduces dazzling to people. The light-emitting device includes a light-emitting element having a dominant wavelength in the range of 430 nm to 500 nm, and a phosphor excited by light from the light-emitting element and having an emission peak wavelength in the range of 507 nm to 660 nm, and emits light having a dominant wavelength in the range of 490 nm to 500 nm. The S / P ratio, which is the ratio of the luminous flux in scotopic vision to the luminous flux in photopic vision, is 6.5 or less, and the luminous intensity at the luminous peak wavelength of the light-emitting element is higher than the luminous intensity at the luminous peak wavelength of the phosphor.

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.

Provided is an ophthalmological lens configured to provide a near-sightedness progression suppression effect using a monochromatic aberration of a pencil that is a bundle of rays passing through the ophthalmological lens and passing through a pupil, the ophthalmological lens including a wavelength filter for attenuating light of a long wavelength longer than a set dominant wavelength, and technology related thereto.

The combined color of a color tunable and intensity adjustable light source can be quantitatively described using the chromaticity diagram. With a preset color, or dominant wavelength, and daily light interval, the microprocessor in this plant growing system can compare the calculated chromaticity diagram data from the corresponding sensor with this preset color value and fine tune the combined color until these two are matched. The microprocessor then can control the lighting time according to daily light interval setting. The system can then automatically control the color and photon numbers. The same control method and algorithm can be used in general lighting system as well.

Provided is a light-emitting device having a high luminous flux.The light-emitting device comprises a light-emitting element 11 that has a dominant wavelength in a range of 380 nm or more and 485 nm or less, and a fluorescent material layer 31 that includes a fluorescent material emitting light by being excited by light emitted from the light-emitting element 11, and a neodymium compound, wherein the light-emitting device emits light having a dominant wavelength in a range of 584 nm or more and 780 nm or less.

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.

Systems and methods that can employ a bleeding sensor that uses an optical mechanism to detect blood in the patients GI tract are described. The bleeding sensor includes a substrate holding a centrally-located light detector with a broad sensitivity spectrum and at least two light emitters positioned radially around the centrally-located light detector, each light emitter configured to emit light of different primary wavelengths. The bleeding sensor has a gap between each of the at least two light emitters and the centrally-located light detector that accepts the contents of a patients gastrointestinal tract. An optical cap covers the centrally-located light detector and the at least two light emitters to direct the light emitted from the at least two light emitters through the gap and onto the centrally-located light detector.

The present invention relates to a full spectrum light emitting device comprising: a solid state light source for generating excitation light having a dominant wavelength from 420 nm to 480 nm, said excitation light consisting of a plurality of light emissions of different dominant wavelengths; a photoluminescent material for generating light having a peak emission wavelength from 490 nm to 680 nm; wherein the device is used to generate light having a spectral intensity which, at wavelengths from 645 nm to 695 nm, decreases from its maximum in the orange to red wavelength region of the spectrum to 50% of the maximum.

An optical analysis of saliva or a fluid-saliva mix obtained during or after an oral care action is performed in order to check whether the saliva or fluid-saliva mix contains blood, which allows for determining whether or not a person may suffer from gingivitis or another condition affecting gum health. In particular, light received from a representative sample (23) containing saliva is detected and analyzed. The analysis involves determination of measurement values of light received by a light-receiving unit (25) for one or more main wavelengths of the light and one or more auxiliary wavelengths of the light. Advantageously, the main wavelength(s) is / are associated with high hemoglobin absorption and the auxiliary wavelength(s) is / are associated with low hemoglobin absorption. A measurement value at an auxiliary wavelength is used for correcting a measurement value at as main wavelength for background influences.

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.

This invention discloses a novel wide-bin sorting method for circular LED chips, comprising: setting two or three consecutive wavelength screening intervals for a single color of the LED chip; performing characteristic tests on the circular LED chips to obtain test data, the test data including the dominant wavelength of each LED chip; screening qualified LED chips based on the test data, and mapping the LED chips to the corresponding wavelength screening intervals based solely on the dominant wavelength of the LED chips to obtain bin transfer data; and transferring the LED chips on the circular chip to a transfer board corresponding to the wavelength screening interval based on the bin transfer data. Compared with the prior art, this invention sets a wider range of bin intervals, resulting in fewer bins (only two or three), thus improving bin utilization. This invention also discloses a display module manufacturing method and a display module. This method encapsulates and divides LED chips on the same transfer board into LED beads, mixes them, and installs them on a circuit board to form a display module, which can effectively improve the color consistency of the display.

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. 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. %, a redox ratio (FeO / Fe2O3) of 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 an amount from about 0.10 to 0.25 wt. % of SO3. The low content of iron oxide is achieved in one instance through the use of a low iron dolomite with a maximum content of 0.020 wt. % Fe2O3.

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.

A device for treating, notably for shaping, in particular straightening, the hair, having at least one active portion comprising at least one light emission source that is able to emit, towards the hair, light radiation having a dominant wavelength peak of between 0.8 μm and 5 μm. The invention also relates to a method for treating the hair, notably for straightening it, using such a device.

The invention relates to the technical field of spectrum regulation and control of beauty instruments, in particular to a spectrum regulation and control method of a dual-wavelength LED beauty instrument, which comprises the following steps: acquiring biological characteristic parameters of a target skin area; dynamically selecting a dominant wavelength of the dual-wavelength LED beauty instrument according to the melanin concentration and a first preset threshold value; acquiring an optical power compensation coefficient according to the skin temperature and a second preset threshold value; generating an optical power regulation and control instruction according to the dominant wavelength and the optical power compensation coefficient; dynamically adjusting an optical power regulation and control instruction through the skin optical reflectivity; obtaining light energy absorption energy of the target skin area based on the heme concentration and the skin water content, and optimizing a light power regulation and control instruction according to the light energy absorption energy; and driving a dual-wavelength LED to generate a composite spectrum according to the optimized optical power regulation and control instruction. According to the method, the biological characteristic parameters of the target skin area are obtained, and the multi-dimensional dynamic regulation and control strategy is combined, so that precise optimization and safety control of the dual-wavelength spectrum are realized.

The present invention provides a light-emitting device that is bright both in scotopic vision and photopic vision and reduces glare to humans. The above light-emitting device includes: a light-emitting element having a main wavelength in the range of 430 nm or more and 500 nm or less, and a phosphor that is excited by the light of the above light-emitting element and has an emission peak wavelength in the range of 507 nm or more and 660 nm or less. The above light-emitting device emits light having a main wavelength in the range of 490 nm or more and 500 nm or less, and the ratio of the light flux in scotopic vision to the light flux in photopic vision, that is, the S / P ratio, is 6.5 or less. The emission intensity at the emission peak wavelength of the above light-emitting element is higher than the emission intensity at the emission peak wavelength of the above phosphor.

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.

Disclosed are a complex phase fluorescent ceramic and a preparation method therefor. The general chemical formula of the complex phase fluorescent ceramic is Ca1-xMnxO-(Re1-yCey)3Al5O12, 0.04≤x≤0.08, 0<y<0.01, Re3+ being one of Lu3+, Y3+ or Gd3+, and the mass ratio of Ca1-xMnxO to (Re1-yCey)3Al5O12 being 10-25:75-90. First, Ca1-xMnxO powder is prepared by a high-temperature solid-phase method; the obtained powder is mixed with (Re1-yCey)3Al5O12 raw material powder, and Ca1-xMnxO-(Re1-yCey)3Al5O12 multi-phase fluorescent ceramic is produced using a solid-state reaction sintering method. Since CaO:Mn is encapsulated within the (Re1-yCey)3Al5O12 ceramic, the problem of CaO easily absorbing moisture can be effectively avoided. Under excitation from a 440-460 nm blue laser, the complex phase fluorescent ceramic of the present invention simultaneously emits yellow-green Ce3+ fluorescence, with a dominant wavelength of 510-565 nm, and orange Mn2+ fluorescence, with a dominant wavelength of 600-630 nm. The ceramic exhibits thermal conductivity as high as 14-20 Wm-1K-1 at room temperature. When the blue laser pumping density is 50-80 W / mm2, the complex phase fluorescent ceramic exhibits a relative light conversion efficiency of 99%-99.8% of the initial efficiency and a color rendering index of 80-95, achieving enhanced luminescence stability and color quality under high pump power density excitation.

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.