184 results about "Lighting spectrum" patented technology

The invention discloses a liquid crystal display filtering and light transmission performance monitoring system and a monitoring method thereof, and relates to the technical field of liquid crystal displays. An ambient light real-time monitoring module; a dual-optical-path differential measurement module; a signal processing and intelligent compensation module; a polarizer dynamic adjustment module; a data storage and analysis module; light intensity fluctuation data are collected in real time through an ambient light real-time monitoring module, reference light and transmission light are synchronously collected through a double-light-path differential measurement module, a signal processing and intelligent compensation module calls a self-adaptive algorithm library, compensation coefficients are calculated in combination with ambient light spectrum data, and a polaroid adjusting instruction is generated. And then an adjusting instruction is sent to the polaroid dynamic adjusting module through the CAN bus, the polaroid dynamic adjusting module feeds back an actual thickness value in real time after adjustment is completed, closed-loop control is formed, and through real-time compensation of ambient light and dual-light-path differential measurement, the influence of a station LED lamp and natural light is eliminated, and the monitoring precision of light filtering and light transmission performance is improved.

Apparatuses, systems, and techniques for reliable image data capture are disclosed herein. A system includes a sensor configured to receive light reflected off one or more objects in an environment. The sensor includes a first set of sensor pixels configured to detect a portion of the received light having wavelengths in the visible light spectrum. The sensor further includes a second set of sensor pixels configured to detect an additional portion of the received light having wavelengths in an infrared spectrum. The system further includes a filter component configured to reduce an intensity of the portion of the received light detected by the first set of sensor pixels while maintaining at least a minimum intensity of the additional portion of the received light detected by the second set of sensor pixels.

A visible light communication apparatus comprising: multiple sources, at least one source being a light source configured to transmit a data signal; and a receiver comprising a polarizer, operating in a visible light spectrum, the receiver configured to receive visible light energy from the one or more sources; the polarizer configured to filter multiple noise signals and allow the data signal to pass through to the receiver. Allows more signal light than background light to reach the sensor, the polarizer improves signal to noise ratio for outdoor visible light communication.

There is disclosed a method and system for retinal stimulation and retinal signal data collection. The system comprises a housing. The housing supports one or more light sources that are configured to expose a retina of an eye of an individual to a flash of light. The housing supports a spectrometer that is configured to record a light spectrum and an intensity of the flash of light. The housing supports a camera configured to capture image data of the eye while exposed to the flash of light.

The eyepiece waveguide stack includes a first eyepiece waveguide including a first incoupling diffractive optical element and a first compound pupil dilator, and a second eyepiece waveguide including a second incoupling diffractive optical element and a second compound pupil dilator, the second incoupling diffractive optical element being laterally offset from the first incoupling diffractive optical element.

Eyewear includes a frame and a pair of lenses installed on the frame. Each of the lenses is configured to absorb at least one absorption wavelength range of light. At least a portion of at least one of the lenses is configured to change the at least one absorption wavelength range of light absorbed in response to at least one of a physiological function, a psychological function, an external environment of a user of the eyewear, and / or manual input by a user. The frame is a three-dimensional printed frame. The eyewear includes at least one battery encapsulated within the frame. The at least one battery is resistant to elevated temperatures during construction of the frame and encapsulation of the

The invention relates to the technical field of leather wastewater treatment, and provides an ultraviolet-visible spectrum-based leather wastewater ozone dosage and COD (Chemical Oxygen Demand) prediction method. The method comprises the following steps: firstly, determining the types of organic matters in a tannery wastewater sample, and determining the distribution characteristics of the organic matters in different fluorescent regions through three-dimensional fluorescence spectrum analysis, so as to discriminate the types of organic pollutants; secondly, screening key wavelengths, and determining characteristic absorption wavelengths representing different organic matters through an ultraviolet-visible light spectrum; then carrying out an ozone oxidation experiment, and synchronously measuring a COD value and an ultraviolet absorption spectrum under different ozone addition amounts; based on experimental data, a multiple linear regression and exponential regression prediction model of ozone dosage and a COD prediction model based on partial least squares regression are established. According to the invention, accurate control of ozone dosage and real-time monitoring of COD are realized, the treatment efficiency is improved, the operation cost is reduced, the adaptability to water quality fluctuation is enhanced, and the method has a wide engineering application prospect.

The application relates to the field of spectrum measuring instruments, in particular to a circularly polarized spectrum measuring instrument capable of synchronous adjustment, which comprises an angle table installed on the surface of a base, an input box and a receiving box installed on the angle table near the center line on both sides, laser emitters and receiving plates respectively installed on one side of the input box and the receiving box, input polarizers and receiving polarizers respectively installed in the input box and the receiving box for emitting and receiving circularly polarized light, and a detection table arranged on the surface of the base and used for bearing a detected object. Laser emitters and receiving plates respectively arranged on one side of the input box and the receiving box are used for separately detecting incident and outgoing angles, the incident and outgoing angles of polarized light are simulated before sample detection, synchronous adjustment of the input polarizer and the receiving polarizer is carried out, the detection automation degree of the circularly polarized spectrum measuring instrument is further improved, and the detection efficiency is improved to a certain extent.

A medication assurance system for verification of both the medication and the patient is disclosed. A portable spectrometer is used to obtain a light spectrum of the medication. A subject identification or biometric device is used to identify the patient. A controller coupled to the portable spectrometer and the subject identification device identifies the medication by performing a chemometric analysis of the light spectrum. Based on the medication identified and the patient identified, the controller can determine if the medication is to be taken by the patient.

The disclosure provides a system for cultivating a pepper plant, wherein the system comprises a light generating device and a control system, wherein the light generating device is configured to provide device light to the pepper plant, wherein the device light comprises one or more of red light and far red light, wherein the red light comprises one or more wavelengths in the range of 600-700 nm, and wherein the far red light comprises one or more wavelengths in the range of 700-800 nm.

Described are embodiments of a multi-layer giga-pixel plenoptic camera that enable three-dimensional (3D) light-field imaging, high resolution and large field-of-view. In embodiments, the camera includes a radiation conversion array layer, an optics array layer, a complementary metal-oxide-semiconductor (CMOS) image sensor array layer, and a memory layer. Depending on the embodiment, the sequence of the radiation conversion array layer and the optics array layer may be reversed, and / or additional isolation layers may be provided between some of the layers. Applications can span the visible light spectrum, and can include ultraviolet (UV) and infrared (IR) spectra. In an embodiment, applications can span x-ray spectra and gamma ray spectra. Radiation converters in the radiation conversion array layer can be filters or scintillation converters. Optics in the optics array layer can be lenses or pinholes and / or coded apertures.

A method includes acquiring structure parameters and reflected light spectra before and after a change in a state of a substrate caused by substrate processing, calculating a structure parameter and a reflected light spectrum in a change period based on the acquired structure parameters and reflected light spectra before and after changing the state of the substrate, creating a learning model that receives a reflected light spectrum as an input and outputs a predicted value of a structure parameter, by performing machine learning using a training data set that includes the structure parameters and the reflected light spectra before and after changing the state of the substrate and the calculated structure parameter and reflected light spectrum and using the predicted value of the structure parameter to automatically adjust an operational parameter of a substrate processing.

The application belongs to the field of liquid crystal materials, and relates to a liquid crystal / polymer light-adjusting and display device capable of realizing scattering state-reflective state-transparent state transition under electric driving. The liquid crystal material comprises a bent liquid crystal molecule mixture with a twisted bent nematic phase, a nematic phase liquid crystal mixture and a chiral dopant, and the liquid crystal material can form an inclined helical arrangement under electric driving. The application provides a flexible liquid crystal / polymer composite device capable of realizing three-state transition of 'opaque state', 'wide-spectrum reflective state' and 'transparent state' under electric driving and a preparation method thereof by using an inclined helical cholesteric phase liquid crystal to replace traditional liquid crystal materials. The'reflective state' can realize dynamic regulation and control of selective reflection in a wide light spectrum range from full visible light to near infrared, and greatly expands the performance and application of a traditional liquid crystal / polymer composite device.

A bio-friendly light spectrum LED light source for work and office environments, and a manufacturing method therefor. The bio-friendly light spectrum LED light source for work and office environments comprises a plurality of LED wafers, a mount (15), and a fluorescent adhesive (16); the mount is provided with a bowl cup (14), and positive and negative electrodes (10); the plurality of LED wafers are all arranged in the bowl cup, and are connected to the positive and negative electrodes by means of gold wire bonding; the fluorescent adhesive is applied to each LED wafer; the plurality of LED wafers include a first LED wafer (11), a second LED wafer (12), and a third LED wafer (13). The color temperature of the bio-friendly light spectrum LED light source for work and office environments is 4,800-6,300K, a color temperature value point is controlled between a Duv=0.01 curve and a Duv=0.001 curve, the luminous efficacy of radiation (LER) of the light source is higher than the LER of sunlight having the same color temperature by 3% or above, the S / P ratio and M / P ratio of the light source are basically equal to the S / P ratio and M / P ratio of the sunlight having the same color temperature, and the spectrum similarity index (SSI) (480-830nm) of the light source and the sunlight having the same color temperature is greater than 95.

The invention discloses an anti-ultraviolet all-plastic sheet and a preparation method thereof. The sheet is of a multi-layer co-extrusion structure and sequentially comprises a core layer, a blocking layer, a bonding layer and a surface layer from inside to outside. Wherein the core layer contains polyolefin and a light stabilizer, the surface layer contains polyolefin and an ultraviolet absorbent, and the spectrum of the polyolefin and the spectrum of the ultraviolet absorbent are complementary within the range of 200400 nm; the barrier layer is selected from aromatic polyamide, aromatic polyester or ethylene-vinyl alcohol copolymer; the bonding layer comprises maleic anhydride grafted polyethylene. According to the invention, molding is carried out through a co-extrusion film blowing process, and the prepared sheet keeps good transparency and full-plastic recoverability, realizes effective shielding of ultraviolet rays and obstruction of gases such as oxygen and the like, and is suitable for packaging contents sensitive to light and oxygen.

This invention discloses a fully optically modulated photoelectric synaptic device, its fabrication method, and its applications. This device successfully simulates the synaptic behavior of nerve cells within the ultraviolet to visible light spectrum. Furthermore, the device exhibits positive responses to both ultraviolet and visible light, with an increase in photocurrent. However, when irradiated with ultraviolet light first and then with visible light, the visible light inhibits the photocurrent generated by the ultraviolet light, causing a rapid decrease in photocurrent.

The invention discloses eye illumination equipment which comprises a light source module used for outputting illumination light; the control module is connected with the light source module and used for controlling the irradiation light output by the light source module to continuously, linearly and periodically change between a preset first spectrum state and a preset second spectrum state.

Examples of the present disclosure are directed toward fusing agent compositions. An example fusing agent composition includes a radiation absorber, a co-solvent mixture, and a balance of water. In various examples, the radiation absorber is present in an amount ranging from about 0.005 weight percent (wt %) to about 1.0 wt % of a total weight of the fusing agent composition, wherein the radiation absorber absorbs radiation at a wavelength range within the visible light spectrum.

A visualization system for use during an ophthalmic procedure. The system includes at least one illumination source configured to emit in a visible and an invisible light spectrum, a light filter configured to allow light within a filtered light spectrum, and an image sensor assembly configured to detect first and second sets of images from the visible and invisible light spectrums, respectively. The system also includes an electronic control unit (ECU) in communication with the at least one illumination source and the image sensor assembly. The ECU is programmed to activate the at least one illumination source to emit light in the visible and the invisible light spectrum and receive image data from the image sensor assembly representative of the first and second sets of images. The controller is also programmed to generate and display at least one composite image based on the first and second sets of images.

An LED light source comprises a red light source, a blue light source and a green light source, the red light source comprises a blue light chip and a first fluorescent powder layer wrapping the blue light chip, and the blue light source comprises a blue light chip and a second fluorescent powder layer wrapping the blue light chip. The green light source comprises a blue light chip and a third fluorescent powder layer wrapping the blue light chip. The first fluorescent powder layer comprises green fluorescent powder with the peak wavelength of 527 nm to 533 nm, green fluorescent powder with the peak wavelength of 540 nm to 546 nm and red fluorescent powder with the peak wavelength of 652 nm to 658 nm; the second fluorescent powder layer comprises green fluorescent powder with the peak wavelength of 527 nm to 533 nm and green fluorescent powder with the peak wavelength of 519 nm to 525 nm; and the third fluorescent powder layer comprises cyan fluorescent powder with the peak wavelength of 492 nm to 498 nm and green fluorescent powder with the peak wavelength of 519 nm to 525 nm. The LED light source can effectively simulate natural light spectrums, especially blue sky and sunlight effects.

The application discloses a wavelength modulation surface plasmon resonance imaging sensing method, which generates multiple groups of illumination spectra by controlling a light-emitting diode, processes the spectra into p-polarized light, excites a sensing chip to generate surface plasmon resonance through prism coupling, collects corresponding reflected light intensity images by using a CMOS camera, and reconstructs surface plasmon resonance reflection spectra of each pixel on the sensing chip by using a smooth constraint reconstruction algorithm according to intensity observation values of the pixel in all images and corresponding illumination spectrum data, so as to further extract a phase signal and generate a spatially resolved phase image. The phase signal and the imaging scheme realize high-sensitivity and high-throughput sensing performance. The method realizes low-cost, high-signal-to-noise ratio and high-throughput sensing imaging.

The application discloses a kind of soft circuit board appearance defect detection methods based on image recognition, it is related to machine vision detection technical field, the foreground of soft circuit board appearance image to be detected is separated, bending shape, material area and bright field distribution of plate body are parsed, and bending light basic feature set is generated;Abnormal candidate fragments in bending light basic feature set are executed light material cancellation processing, and the bending light decoupling triplet consisting of curved attached light spectrum, material interface spectrum and damage residual streak spectrum is generated;Cross-material bending light map is constructed based on bending light decoupling triplet, and abnormal candidate fragments are attributed to sorting using path attention, and bending light attribution sequence is generated;Boundary constraint and residual streak type mapping are carried out according to bending light attribution sequence, and soft circuit board bending light stripping defect discrimination graph is generated;Self-supervised consistency review is carried out based on soft circuit board bending light stripping defect discrimination graph, and bending reflection false defect result and real appearance defect detection result of scratch, copper exposure, dirt or indentation are output.

A novel photocatalyst Bi2WO6 / NiO / Ag with hierarchical flower-like Z-scheme heterojunction, which exhibited excellent stability and photocatalytic activity over a wide light spectrum, was synthesized. The as-prepared composites were used in the remediation of real oil sands process water (OSPW) and achieved complete removal of aromatics, classical naphthenic acids (NAs). and heteroatomic NAs after 6 h of photocatalytic treatment. The acute toxicity of OSPW was completely eliminated after only 2 hours of treatment. h+, ·OH and O2·—were found to be the major oxidative species in the photocatalytic system. The enhanced photocatalytic efficiency is the result of the unique Z-scheme electron transfer among electron mediator Ag, NiO, and Bi2WO6 and the SPR effect near Ag, which was supported by the DFT calculations of the electronic properties of Bi2WO6 / NiO / Ag heterostructure.

The present application relates to the technical field of electromagnetic spectrum management, more particularly to a light spectrum prediction method based on knowledge distillation, comprising the following steps: S1, pre-processing the received spectrum data; S2, determining the step of input data according to the time domain autocorrelation of the collected spectrum data; S3, constructing a spectrum prediction network model based on a knowledge distillation strategy; S4, training the spectrum prediction network model using training set data; S5, determining whether the training is completed; if yes, inputting the training set data into the trained spectrum prediction network model, obtaining the output of the prediction result and ending the training process; if no, returning to S4 after adding one to the iteration number of the training. The present application introduces knowledge in the technical field of knowledge distillation, overcomes the model complexity of traditional deep learning networks, and has good applicability in small sample cases.

The invention discloses a tomato cultivation method based on light-temperature coordinated regulation and control, and relates to the field of agricultural cultivation. The method comprises the following steps: S1, cultivation facility configuration; s2, light and temperature monitoring; s3, illumination regulation and control; and S4, temperature regulation and control. Through light and temperature collaborative optimization, growth and development of the tomatoes can be remarkably promoted, the yield is increased, the quality is improved, dynamic and accurate regulation and control of the tomato growth environment are achieved by monitoring light and temperature data in real time and controlling the light and temperature data, and energy waste and management blindness are reduced. By means of the combined technology of the concave cultivation ridges, the reflective film, sunshade ventilation and root zone cooling, the rhizosphere temperature in summer can be remarkably reduced, high-temperature stress can be effectively coped, the incidence rate of the yellow leaf curl virus disease is reduced, and the over-summer cultivation problem is solved. By adopting the full-spectrum LED light supplement lamp and combining with a proper red and blue light ratio, the light energy utilization rate is higher, the spectrum composition is more reasonable, and tomato morphogenesis and photosynthesis are more facilitated.

What is proposed is a roll of a self-adhesive temperature indicator tape consisting of a plurality of successively connected fragments with separators arranged therebetween. Each of said fragments comprises: a flexible polymeric base, the rear side of which is covered with a pressure-sensitive adhesive; a gas-filled hot-melt material which is fastened to the base and is non-transparent to at least a part of the visible light spectrum, said material being capable of reaching an irreversible state of transparency when heated above a threshold temperature due to the melting of a substance contained in the material; and a protective layer which is welded or glued using an adhesive to the base and insulates the gas-filled hot-melt material from the surrounding environment both before and after detachment of a fragment from the tape via a separator, wherein at least a part of the protective layer disposed above the gas-filled hot-melt material is transparent to at least a part of the visible light spectrum. The technical result consists in preserving the functional characteristics of individual fragments and the insulation of the gas-filled hot-melt material when the tape is separated into individual temperature indicator labels.

The invention discloses an ultraviolet-visible light spectrum water quality detection method and device, a medium and a product, and relates to the field of spectrum analysis and data processing.The method comprises the steps that an absorption spectrum corresponding to a transmittance spectrum of a sample is determined; carrying out de-noising treatment on the absorption spectrum of the sample; constructing corresponding spectral data generation models based on different neural networks; determining an optimal spectral data generation model; a concentration label generated in a preset concentration interval is searched by using a grid method, and a simulated absorption spectrum of the sample under the corresponding concentration label is generated by using the optimal spectrum data generation model; constructing a concentration regression model based on the simulated absorption spectrum and the corresponding concentration label; and performing pollutant concentration prediction on different pollutant solutions by using the concentration regression model. According to the invention, accurate estimation of the concentration of each pollutant in a complex water quality environment can be improved, a model can be quickly reconstructed when a detection task is changed, and an intelligent water quality sensing system is established.

1. The name of the design product: electronic device's lush plant light spectrum control graphical user interface. 2. The use of the design product: used for mobile phone to control plant light spectrum, set timing plan and adjust spectrum to meet the needs of different growth cycles of plants for spectrum, and after adjustment, the lamp operates according to the set plan. 3. The design points of the design product: the content of the graphical interface and the layout of the graphical user interface. 4. The picture or photo that best indicates the design points: front view. 5. The use of the graphical user interface: the graphical user interface is used to provide comprehensive regulation and monitoring functions for the process of plant cultivation, accurately adjusts the brightness, power, light efficiency and lighting time of the light source of the lamp, and real-time monitors the temperature and humidity of the planting environment. 6. The area of the graphical user interface in the product: displayed in the display screen of the mobile phone. 7. The human-computer interaction mode of the graphical user interface: in the main view, click "group button icon" that is the middle icon at the bottom of the main view to enter interface change state diagram 1, click the "button icon in the first row of the right side column" in interface change state diagram 1 to enter interface change state diagram 2, click "Spectrum tuning" in interface change state diagram 2 to enter interface change state diagram 3, and click "Spectrum tuning" in interface change state diagram 3 to enter interface change state diagram 4.

An exemplary optical spectrum control device disclosed herein has an optical spectrum variable circuit and a control circuit. The optical spectrum variable circuit receives output light of a gain filter for shaping a gain spectrum of an optical amplifier by means of a predetermined filter characteristic, and varies the optical spectrum of the output light. The control circuit controls the optical spectrum variable circuit so that the output light spectrum of the optical spectrum variable circuit approaches a desired optical spectrum.