68 results about "Spectral power distribution" patented technology

The present invention provides a light generation system configured to provide system light; wherein the light generation system includes (i) a first light generating device, (ii) a second light generating device, and (iii) a light-emitting material device; wherein: (A) the first light generating device includes a first solid-state light source, the first solid-state light source being configured to generate first light source light having a wavelength selected from the wavelength range of 430-490 nm; wherein the first light generating device is configured to generate first device light; (B) the light-emitting material device includes a first light-emitting material, the first light-emitting material being disposed downstream of the first light source and configured to convert at least a portion of the first light source light received by the first light-emitting material into first light-emitting material light having a first spectral power distribution in the visible wavelength range, the first spectral power distribution having a first centroid wavelength (λc1); wherein the first centroid wavelength (λc1) is selected from the wavelength range of 615-645 nm; wherein the first light-emitting material light includes one or more emission bands having a first full width at half maximum (FWHM1), the first... The full width at half maximum (FWHM2) is selected from a range up to 40 nm; wherein the first luminescent material comprises a luminescent material of the type doped with tetravalent manganese, wherein M comprises an alkaline earth cation, wherein M' comprises a basic cation, and x is in the range of 0-1, wherein A comprises a tetravalent cation, wherein X comprises a monovalent anion, and at least fluorine; (C) the second light generating device comprises a second solid-state light source; wherein the second light generating device is configured to generate second device light having a second spectral power distribution in the visible wavelength range, the second spectral power distribution having an emission band having (a) a second centroid wavelength (λc2) selected from a wavelength range of 605-655 nm, and (b) a second full width at half maximum (FWHM2) selected from a range up to 40 nm; and (D) the light generating system is configured such that (a) the first spectral power distribution and the second spectral power distribution at least partially overlap, (b); and (c) in the operating mode of the light generating system, the system light comprises (i) the first luminescent material light and (ii) the second device light.

The invention provides a radiation generating system comprising a radiation unit, wherein the radiation unit comprises a light source, a first collimator, and an optical arrangement, wherein: (a) the light source is configured to generate light source radiation having a first spectral power distribution having an intensity I1,1 at a first wavelength λ1 and an intensity I1,2 at a second wavelength λ2; (b) the first collimator is configured in a light receiving relationship with the light source, wherein the first collimator is configured to collimate the light source radiation into collimated light source radiation; (c) the optical arrangement is configured downstream of the first collimator and is configured to convert the collimated light source radiation into arrangement radiation; wherein the arrangement radiation is collimated relative to the collimated light source radiation; wherein the optical arrangement comprises a second collimator and an optical filter, wherein: (i) the second collimator is configured downstream or upstream of the optical filter; (ii) the optical filter has a higher transmission for the first wavelength λ1 than for the second wavelength λ2 when irradiated under a predefined angle; (iii) the first wavelength λ1 is selected from the range of 190-230 nm and the second wavelength λ2 is selected from the range of 100-190 nm or 230-280 nm; and (iv) the second collimator is at least partly defined by a plurality of light radiation transmissive channels, wherein the radiation transmissive channels are defined by channel walls which comprise a light absorbing material, wherein the light absorbing material is configured to absorb at least part of the collimated light source radiation received by the light absorbing material.

The invention provides a light generating system (1000) comprising a first light generating device (110), a second light generating device (120), a third light generating device (130), and a control system (3000); wherein: (A) the first light generating device (110) comprises a first solid state light source (10) configured to generate first light source light (11) and a first luminescent converter (2100); (B) the second light generating device (120) comprises a second solid state light source (20) configured to generate second light source light (21) and a second luminescent converter (2200); (C) the third light generating device (130) comprises a third solid state light source (30) configured to generate third light source light (31) and a third luminescent converter (2300); (D) the first, second, and third luminescent converter (2100, 2200, 2300) comprise a narrowband luminescent material (400); wherein the first and second luminescent converter (2100, 2200) further comprise a green-yellow luminescent material (200) and a broadband luminescent material (300); (E) the green-yellow luminescent material (200) is configured to convert the first and second light source light (11, 21) into green-yellow luminescent material light (201); (F) the broadband luminescent material (300) is configured to convert (a) the first and second light source light (11, 21) and / or (b) the green-yellow luminescent material light (201) into broadband luminescent material light (301) having a broadband centroid wavelength (λcb) of 600-670 nm; (G) the narrowband luminescent material (400) is configured to convert the first, second, and third light source light (11,21,31) into narrowband luminescent material light (401) having a narrowband centroid wavelength (λcn) of 610-650 nm; (H) the first light generating device (110) is configured to generate white first device light (111); (I) the second light generating device (120) is configured to generate white second device light (121); wherein: (i) a relative spectral power of the broadband luminescent material light (301) and / or the narrowband luminescent material light (401) in the second device light (121) differs from that in the first device light (111); (J) the third light generating device (130) is configured to generate third device light (131) having a third device centroid wavelength (λcd3) of 610-650 nm; (K) the light generating system (1000) is configured to generate system light (1001) comprising the first, second, and / or third device light (111,121,131); and (L) the control system (3000) is configured to control a spectral power distribution of the system light (1001) by individually controlling the first, second, and third light generating device (110, 120, 130).

The application discloses a kind of LED early fault diagnosis and life prediction method based on spectral power distribution;The present application is based on similarity detection method to carry out fault diagnosis, extracts spectral characteristic value from statistical model, is reduced dimension by principal component analysis, and is clustered using K-means++ method, finally using distance and threshold comparison determines abnormal time.On this basis, long short-term recurrent neural network is established to predict spectral characteristic value, remodel spectrum, and predict remaining useful life.The present application combines spectral power distribution, and carries out fault diagnosis and life prediction to accelerated step aging white light LED based on long short memory recurrent LSTM neural network method, which greatly improves the accuracy of LED early abnormal detection and remaining life prediction.

The invention provides a light generating system (1000) comprising a first light generating device (110) and a control system (300), wherein the first light generating device (110) comprises a first solid state light source (10), a second solid state light source (20), and a luminescent converter (2000), wherein: (A) the first solid state light source (10) is configured to generate first light source light (11) having a first peak wavelength (λp1) selected from the range of 400-490 nm; (B) the second solid state light source (20) is configured to generate second light source light (21) having a second peak wavelength (λp2) selected from the range of 470-540 nm; wherein λp2 - λp1 ≥ 20 nm; (C) the luminescent converter (2000) is configured in a light receiving relationship with the first and second solid state light source (10,20); wherein the luminescent converter (2000) comprises a first luminescent material (210) and a second luminescent material (220); (D) the first luminescent material (210) comprises a luminescent material of the type M'xM2-2xAX6 doped with tetravalent manganese, wherein M' comprises an alkaline earth cation, M comprises a monovalent cation, and x is in the range of 0-1, wherein A comprises a tetravalent cation, wherein X comprises a monovalent anion, at least comprising fluorine; wherein the first luminescent material (210) is configured to convert at least part of the first light source light (11) received by the first luminescent material (210) into first luminescent material light (211); (E) the second luminescent material (220) is configured to convert at least part of the second light source light (21) received by the second luminescent material (220) into second luminescent material light (221); wherein the second luminescent material light (221) has a second centroid wavelength (λc2) selected from the range of 600-660 nm; wherein the second luminescent material light (221) comprises at least one emission band having a second full width at half maximum FWHM2 of ≥ 40 nm; (F) the first light generating device (110) is configured to generate first device light (111); wherein in an operational mode of the first light generating device (110), the first device light (111) comprises one or more of the first luminescent material light (211) and the second luminescent material light (221); wherein the first device light (111) has a first device centroid wavelength (λcd1) selected from the range of 600-660 nm; and (G) the control system (300) is configured to control a spectral power distribution of the first device light (111) by controlling the first solid state light source (10) and the second solid state light source (20).

The invention provides a light generating system (1000) configured to generate in a first operational mode of the light generating system (1000) system light (1001), wherein: the system light (1001) in the first operational mode has a spectral power distribution with at least 85% of the spectral power in three emission bands (111,121,131) comprising (i) a first emission band (111) having a centroid wavelength of 445 nm + / −25 nm and having a full width half maximum of at maximum 25 nm, (ii) a second emission band (121) having a centroid wavelength of 541 nm + / −25 nm and having a full width half maximum of at maximum 150 nm, and (iii) a third emission band (131) having a centroid wavelength of 614 nm + / −25 nm and having a full width half maximum of at maximum 25 nm; in the first operational mode the light generating system (1000) is configured to control the spectral power distribution of the system light (1001) in dependence of a radiant flux of the system light (1001) while maintaining a correlated color temperature of the system light (1001) within + / −10% of a predetermined correlated color temperature value; and in the first operational mode the light generating system (1000) is configured to shift a color point (1010) of the system light (1001) towards a lower Duv with decreasing radiant flux of the system light (1001) or to shift the color point (1010) of the system light (1001) towards a higher Duv with increasing the radiant flux of the system light (1001).

The invention discloses a closed-loop LED driving system based on visible light sensor feedback. The closed-loop LED driving system comprises a wireless communication module, a core control module, a voltage conversion module, a constant-current driving module, a light source matrix module and a visible light sensor module. Low-dimensional spectral data of an LED light source are collected in real time through a visible light sensor, the low-dimensional spectral data are reconstructed into high-dimensional spectral power distribution through a neural network model on a microprocessor, driving current of a multi-channel LED is dynamically adjusted through PID closed-loop control on the basis of the difference between the reconstructed spectrum and a target spectrum, accurate tracking and correction are achieved, and high-precision tracking and correction are achieved. The influence of factors such as LED device aging and environment change is effectively overcome, the stability and the consistency of an output spectrum are ensured, and the adaptability and the intelligent degree of a light source are improved.

The invention provides a light generating system (1000) comprising a light generating device (100), a first luminescent material (210), a second luminescent material (220), and a third luminescent material (230), wherein: (A) the light generating device (100) is configured to generate device light (101) having a peak wavelength selected from the range of 435-475 nm; wherein the light generating device (100) comprises a solid state light source; (B) the first luminescent material (210) is configured to convert part of the device light (101) into first luminescent material light (211) having a color point with u′ values selected from the range of 0.08-0.17 and v′ values selected from the range of 0.5-0.57; (C) the second luminescent material (220) is configured to convert part of the device light (101) into second luminescent material light (221) having a color point with u′ values selected from the range of 0.32-0.4 and v′ values selected from the range of 0.52-0.58; (D) the third luminescent material (230) is configured to convert part of the device light (101) into third luminescent material light (231); wherein the third luminescent material has a centroid wavelength (λ3c) selected from the range of 620-650 nm and a full width half maximum of 60 nm or smaller; (E) the light generating system (1000) is configured to generate system light (1001) having a (system light) spectral power distribution comprising device light (101), first luminescent material light (211), second luminescent material light (221), and third luminescent material light (231); wherein the (system light) spectral power distribution has a first spectral power (E1p) at a first peak maximum (λ1p) of the first device light (101) and a second spectral power (Em) at a minimum between the first peak maximum (λ1p) of the first device light (101) and a second peak maximum (λ2p) of the first luminescent material light (211); and (F) the light generating device (100) and the luminescent materials (210,220,230, . . . ) are selected such that 1.0≤E1p / Em≤6.0.

The application discloses a light source color resolution evaluation method, device and equipment and a storage medium, and relates to the technical field of light source quality testing. The spectral power distribution of a test light source is acquired under multiple exit angles, and the bidirectional reflectance factor of a test color sample is combined to calculate three stimulus values and white point three stimulus values. The hue angle, brightness value and saturation value of each test color sample under the exit angle are calculated according to the three stimulus values and the white point three stimulus values. The comprehensive color error value of the test light source relative to a reference light source under the exit angle is obtained according to the aforementioned three parameters. The color resolution index of the test light source is obtained according to the neutral density index of the test light source and the comprehensive color error value corresponding to each exit angle. The spectral power distribution is collected under multiple exit angles, the color rendering performance of the light source in the front is considered, and the spectral output difference under different angles is also considered, so that the color rendering consistency and the directional characteristics of the light source in the spatial distribution can be comprehensively reflected.

This invention discloses a method and system for quantifying the color discrimination ability of both natural and artificial light sources. The method first measures the spectral power distribution of the light source to be evaluated. S ( l The illuminance E was then calculated; subsequently, the neutrality index of the light source was calculated in a uniform color space. S neutral The continuous color difference index (SCD) is calculated based on the chromaticity values ​​of a set of continuous color samples in a uniform color space; a segmented illuminance correction function is output according to the illuminance range; finally, the neutrality index is... S neutral The continuous color difference index (SCD) and illuminance correction function are uniformly input into a preset light source color discrimination capability quantification model G to calculate a comprehensive evaluation value. This invention comprehensively quantifies color discrimination capability from three dimensions: spectral characteristics of the light source, neutrality, and illuminance level. It effectively solves the technical problems of existing models failing to represent the spectrum under natural light and being unable to accurately quantify the nonlinear visual response of the human eye under extremely large illuminance spans.

This invention provides a method for measuring the radiation of a display field, enabling the measurement of hyperspectral information of a display screen under test. Specifically, the method includes: S1: controlling the display screen under test to display a first set of images, and using the spectral measurement device to obtain the spectral power distribution of region A of the display screen under test under the corresponding image; S2: selecting two or more specific filters based on the spectral power distribution of region A obtained in step S1; S3: controlling the display screen under test to display a second set of images, sequentially inserting the filters selected in step S2 into the optical path, and the light from region B of the display screen under test being received by an area array sensor through an imaging lens and the filters; S4: calculating the spectral power distribution of each position point in region B of the display screen under test when displaying the second set of images, based on the pixel response value of the area array sensor in step S3 and the spectral power distribution of region A of the display screen under test in step S1.

This invention relates to a testing system for assessing color vision variability in a test subject (7). The testing system includes at least two test carriers (1), each of which is provided with a two-dimensional pattern (4) comprising a background (2) and a plurality of samples (3). The plurality of samples (3) and the background (2) of each of the at least two test carriers (1) are made from a combination of at least two different dyes representing metameris colors. The samples (3) and / or the background (2) display color scaling in at least two directions, such that each of the at least two test carriers (1) is configured to provide a point (PIS) from which the test subject (7) can select the most closely matched metameris color of the sample (3) and the background (2) from the two-dimensional pattern (4). C The system further includes a test illumination unit (5) configured to provide light for color vision variability assessment, the light having a specific spectral power distribution. The system also includes a processing unit (6) configured to calculate the point of interest (PIS) selected by the test subject (7). C ) and reference point (PIS) B The changes are compared to predict the color matching function and / or determine the congenital and / or acquired color vision deficiencies of the test subject (7), using the reference point (PIS). B The power distribution is calculated by the processing unit (6) based on data from a predefined standard observer and taking into account the specific spectral power distribution of the light from the test illumination unit (5).

The invention provides a light generating system (1000) configured to generate system light (1001), wherein the light generating system (1001) comprises a first light generating device (110) and a second light generating device (120); wherein:-the first light generating device (110) comprises a first light source (10) and a first luminescent converter (210); wherein the first luminescent converter (210) comprises a first host material (215) and a first luminescent material (216), wherein the first luminescent material (216) has a first weight percent CW1 relative to the total weight of the first luminescent converter (216); the first light generating device (110) is configured to generate first device light (111) having a spectral power distribution in the wavelength range of 380-780 nm, the spectral power distribution having at least 60% of the spectral power provided by the first light source light (11) and a maximum 40% of the spectral power provided by the first converter light (211); -a second light generating device (120) comprising a second light source (20) and a second luminescent converter (220); wherein the second luminescent converter (220) comprises a second host material (225) and a second luminescent material (226), wherein the second luminescent material (226) has a second weight percent CW2 relative to the total weight of the second luminescent converter (220); the second light generating device (120) is configured to generate second device light (121) having a spectral power distribution in the wavelength range of 380-780 nm, the spectral power distribution having at least 60% of the spectral power provided by the second converter light (221) and a maximum 40% of the spectral power provided by the second light source light (21); and-CW1 / CW2 < = 0.5.

The invention provides a light source selection method, device and equipment based on color painting pigment transmittance and a medium, which can be applied to the technical field of cultural relic protection and spectral analysis. The light source selection method based on the color painting pigment transmittance comprises the steps that spectral power distribution of a plurality of candidate light sources used for providing illumination for a color painting cultural relic, various pigment types of a target color painting part on the color painting cultural relic and the thicknesses of pigment layers corresponding to the various pigment types are obtained; according to the identifiers of the various pigment types, selecting respective target spectrum transmittance models of the various pigment types; inputting the spectral power distribution and the thickness of the pigment layer into a target spectral transmittance model of each pigment type, and outputting the spectral transmittance of each pigment type to the candidate light source; according to the spectral transmittance of each pigment type and the spectral power distribution of the candidate light source, predicting the transmission power of the candidate light source penetrating through the pigment layer; and selecting a target light source according to the transmission power.

The invention provides a light generating system (1000) comprising: (i) a light generating device (100) configured to generate device light (101) having a controllable radiant flux and a controllable spectral power distribution; and (ii) a control system (300) configured to control the radiant flux and the spectral power distribution of the device light (101); wherein: (A) a ratio B / Y of the device light (101) is defined as a ratio of a radiant flux of the device light (101) in a 450-500 nm wavelength range to a radiant flux of the device light (101) in a 550-600 nm wavelength range; (B) in a first operating mode of the light generating system (1000), the control system (300) is configured to change from a first device light setting to a second device light setting different from the first device light setting; (C) the first device light setting and the second device light setting are selected from: (a) a high radiant flux first setting (SI) in which the device light (101) is a first light having a first radiant flux II and a first B / Y ratio Rl; and (b) a low radiant flux second setting (S2) in which the device light (101) is a second light having a second radiant flux I2 and a second B / Y ratio R2; and (D) I2 < II, and Rl < R2.

The invention provides a light generating system (1000) comprising a first light generating device (110), wherein the first light generating device (110) comprises a first solid state light source (10) and a luminescent converter (2000), wherein: (A) the first solid state light source (10) is configured to generate first light source light (11) having a first peak emission wavelength (λp1) selected from the range of 420-490 nm; (B) the luminescent converter (2000) is configured in a light receiving relationship with the first solid state light source (10); wherein the luminescent converter (2000) comprises a first luminescent material (210), a second luminescent material (220) and a third luminescent material (230); (C) the first luminescent material (210) consists of a luminescent material of the type M'xM2-2xAX6:Mn4+, wherein M' comprises an alkaline earth cation, M comprises a monovalent cation, wherein M comprises at least 50 mole% Na, x is in the range of < 1, wherein A comprises a tetravalent cation, comprising one or more of silicon, titanium, and germanium, and wherein X comprises a monovalent anion, at least comprising fluorine; wherein the first luminescent material (210) is configured to convert part of the first light source light (11) received by the first luminescent material (210) into first luminescent material light (211); (D) the second luminescent material (220), different from the first luminescent material (210), is configured to convert part of the first light source light (11) received by the second luminescent material (220) into second luminescent material light (221); (E) the third luminescent material (230) is configured to convert part of the first light source light (11) received by the third luminescent material (230) into third luminescent material light (231); (F) the first light generating device (110) is configured to generate first device light (111), wherein the first device light comprises non-converted first light source light (11'), the first luminescent material light, the second luminescent material light and the third luminescent material light; wherein the first device light has a spectral power distribution, wherein (i) x0% of the spectral power is provided by the non-converted first light source light, (ii) x1% of the spectral power is provided by the first luminescent material light, (iii) x2% of the spectral power is provided by the second luminescent material light, and (iii) x3% of the spectral power is provided by the third luminescent material light; wherein 40% ≥ x0 ≥ 4% and 20% ≥ x1 ≥ 4% and x2 + x3 > x1; and (G) the first device light is white light having a CCT in a range from 2000K to 6500K and a CRI of at least 80.

The invention relates to a spectrum processing system, a processing method and a medium, and relates to the technical field of optical signal processing, the system comprises an optical front end, a relay lens group, a dispersion element and a beam splitter which are arranged in sequence, and the beam splitter divides a light beam from the dispersion element into a first light beam and a second light beam; the liquid crystal spatial light modulator is arranged on a light path of the first light beam, has a polarization-independent characteristic, and is used for performing phase and / or amplitude modulation processing on different wavelength components of the first light beam and reflecting the processed light beam along an original light path so as to output the light beam through the optical front end; the spectrum detector is arranged on a light path of the second light beam and used for receiving the second light beam and detecting spectrum power distribution of the second light beam to obtain spectrum information, and the high-precision spectrum detection and spectrum processing integrated function is achieved.

The invention belongs to the technical field of ultraviolet phototherapy, and discloses an ultraviolet treatment parameter generation system based on skin type automatic identification. Comprising a skin state sensing module used for generating a skin static holographic snapshot and triggering a micro-energy pre-irradiation action on a target skin area through the skin static holographic snapshot so as to obtain a photosensitive response dynamic set; the intelligent feature analysis module is used for obtaining a photosensitive skin feature-phenotype joint vector, performing multi-target deduction on the photosensitive skin feature-phenotype joint vector through a pre-constructed comprehensive evaluation criterion, and generating optimal spectral power distribution and an optimal dose matrix; the self-adaptive optical control module is used for driving the adjustable double-band light source to work and inverting effective ultraviolet energy actually reaching the corium layer to form steady-state treatment driving current; and the thermal safety monitoring and defending module is used for controlling the operation state of the adjustable double-band light source through the epidermal temperature field to realize individual differentiation treatment.

A lighting system and device are disclosed that emit specifically designed light to reduce patient discomfort such as migraine pain through the combined use of narrow-band green light and UV-B light. A method using such lighting system or lighting device is also disclosed. The lighting system is configured to provide system light, and comprises a green solid-state light source, an ultraviolet solid-state light source, and a controller. The green solid-state light source emits green light with a first spectral power distribution having a first peak emission wavelength in a first wavelength range of 500–550 nm and a first full-width- half-max FWHM1 of ≤70 nm. The ultraviolet solid-state light source emits ultraviolet light with a second spectral power distribution having a second peak emission wavelength in a second wavelength range of 280–335 nm. The controller is configured to control the green solid-state light source and the ultraviolet solid-state light source.

A light emitting device is adapted to realize white light and includes a first light emitting diode chip emitting light having a first peak wavelength in the range of 400 nm to 420 nm, a second light emitting diode chip emitting light having a second peak wavelength in the range of 420 nm to 440 nm, and a wavelength converter covering the first and second light emitting diode chips. The wavelength converter including a blue phosphor, a green phosphor, and a red phosphor. When a maximum value of a spectral power distribution of the light emitting device or a maximum of a reference spectral power distribution of black body radiation is 100%, a difference between the spectral power distribution of the light emitting device and the reference spectral power distribution is less than 20% at each wavelength in the wavelength range of 440 nm to 640 nm.

The invention provides a light generating system comprising a first light generating device, a second light generating device, a first luminescent material, and a control system, wherein: (A) the first light generating device comprises a first laser light source and is configured to generate first device light (111) having a first device light peak wavelength (λ1) and having a first spectral power distribution; wherein the first device light peak wavelength (λ1) is selected from the wavelength range of 425-465 nm; (B) the second light generating device comprises a second laser light source and is configured to generate second device light (121) having a second device light peak wavelength (λ2) and having a second spectral power distribution, different from the first spectral power distribution; wherein the second device light peak wavelength (λ2) is selected from the range of 470-490 nm; (C) the first luminescent material is configured in a light receiving relationship with the first light generating device and is configured to convert at least part of the first device light into first luminescent material light having a luminescent material emission centroid wavelength (λc,1) within the green-yellow wavelength range; and the first luminescent material is not configured in a light receiving relationship with the second light generating device; (D) the light generating system is configured to generate system light (1001) comprising one or more of the first device light, the second device light, and the first luminescent material light, wherein the system light has a controllable correlated color temperature; and (E) the control system is configured to control the first light generating device and the second light generating device, such that (a) in a first operational mode of the light generating system the system light has a first correlated color temperature CCT1, wherein CCT1≥4000 K, (b) in a second operational mode of the light generating system the system light has a second correlated color temperature (CCT2), wherein CCT2−CCT1≥1000 K, (c) in at least one of the operational modes, the system light has a correlated color temperature selected from the range of at least 7000 K, and (d) the system light in both operational modes has a color rendering index of at least 70.

A method for identifying, recording, encoding, or reproducing electromagnetic radiation employs machine learning models. For example, each of multiple training illuminations may be measured using first and second types of systems. The first type of system may be a low-cost system that includes light sensors and measures an array of readings; the second type of system may be a precision spectrometer that measures the spectral power distribution. A trained machine learning model may predict the spectral power distribution of illumination from the array associated with the first type of system and may predict the representation of illumination understood by a spectrally tunable luminaire. The array of readings associated with the first type of system may be used to identify, record, encode, or reproduce electromagnetic radiation.

The present invention provides a light generation system (1000) comprising n first vertical-cavity surface-emitting lasers (110) and a control system (300), wherein n ≥ 1, wherein each of the n first vertical-cavity surface-emitting lasers (110) is configured to generate at least two centroid wavelengths (λ) having a wavelength difference of at least 10 nm at a frequency varying at least 50 Hz. nc,1 , λ nc,2 A first laser (111) varying between n first vertical-cavity surface-emitting lasers (110) is generated; wherein a control system (300) is configured to control n first vertical-cavity surface-emitting lasers (110) such that a system light (1001) is generated, the system light comprising the first laser (111) of at least one of the n first vertical-cavity surface-emitting lasers (110), and wherein the control system (300) is configured to control the spectral power distribution of the system light (1001), wherein the system light (1001) is white light having a correlated color temperature in the range of 1800K to 8000K and a color rendering index of at least 70.

The invention provides a light source determination method and device, electronic equipment and a storage medium, and relates to the technical field of light source test.The method comprises the steps that absorption spectrum power distribution of a target color temperature is obtained, target spectrum power distribution is determined according to first spectrum power distribution of a test light source array and the absorption spectrum power distribution, and the target spectrum power distribution is obtained; the first spectrum is a spectrum of which the target color temperature is not added with a spectrum reagent, and a spectrum corresponding to the target spectrum power distribution is a target spectrum required for determining a target light source; determining a spectrum similarity index of the target color temperature and the target spectrum according to the target spectrum power distribution, wherein the spectrum similarity index is used for indicating the similarity degree of a first spectrum of the target color temperature and the target spectrum; and determining a light source corresponding to the target spectrum as a target light source according to the spectrum similarity index. By implementing the technical scheme provided by the invention, the technical problem of relatively low determination efficiency of the required light source in related technologies is solved, and the effect of improving the determination efficiency of the required light source is achieved.

This invention discloses an intelligent control method, system, device, and medium for LED lights, relating to the field of intelligent lighting control technology. The method includes collecting environmental spectral power distribution, pyroelectric infrared signals, millimeter-wave radar micro-motion characteristics, and audio activity signals to form multimodal sensing inputs; calculating the equivalent daylight illuminance of black pixels based on the environmental spectral power distribution, and generating the equivalent daylight illuminance of target black pixels by combining real-time clock information; inputting the multimodal sensing inputs to a locally deployed behavior classification model to output behavior tags for the user's current activity state; recording the output behavior tags within a continuous time period, statistically analyzing the dwell time of each behavior state, and constructing a behavior state dwell time distribution function; determining a spatial activity dynamic factor based on the behavior state dwell time distribution function, and generating a target brightness value and a target correlated color temperature value based on the spatial activity dynamic factor, the equivalent daylight illuminance of target black pixels, and a pre-established personalized lighting preference model.

The application discloses a synchronous spectrum and color imaging system and method based on multi-spectrum feature coding. The system comprises: a multi-feature illumination module for generating at least two groups of wide-spectrum light with different spectral power distributions; an image acquisition module comprising at least one multi-channel image sensor for capturing the response of an object under test under different wide-spectrum light in a synchronous timing to obtain original observation data containing spatial, channel and time multi-dimensional information; a synchronous control module for coordinating the switching sequence of the multi-feature illumination module and the exposure timing of the image acquisition module; and a calculation and reconstruction module for directly generating a color image through color space mapping for the original observation data under the first wide-spectrum illumination light, and for carrying out inverse operation on the original observation data under the second wide-spectrum coding light based on a preset spectrum reconstruction model to obtain continuous spectrum data. The application can simultaneously detect an RGB image and perform spectrum restoration, and can effectively reduce the cost and system complexity.

The invention provides a near-space visible near-infrared solar spectrum irradiance measurement system, which relates to the technical field of optical measurement and comprises a near-space flying platform, a solar tracker, a first measurement unit, a second measurement unit and a data processing module. Wherein the sun tracker is used for tracking the direction of the sun; the near space flying platform is used for bearing the solar tracker; the first measuring unit is used for collecting absolute radiation data of sunlight; the second measuring unit is used for collecting relative spectral power distribution of sunlight in a target wave band range; and the data processing module is used for determining solar spectral irradiance based on the absolute radiation data and the relative spectral power distribution. According to the near space visible near infrared solar spectrum irradiance measurement system provided by the invention, the solar spectrum irradiance is calculated through the absolute radiation data and the relative spectrum power distribution, and the accuracy of solar spectrum irradiance measurement is improved.

: The invention provides a light generating system (1000) comprising a first light generating device (110), wherein the first light generating device (110) comprises a luminescent converter (2000) and one or more solid-state light sources (10,20,..), wherein - the one or more solid-state light sources (10,20,..) are configured to generate light source light (11,21,..) having a peak emission wavelength in a wavelength range of 280- 420 nm; - the luminescent converter (2000) is configured in a light receiving relationship with the one or more solid-state light sources (10,20,..); wherein the luminescent converter (2000) comprises a first luminescent material (210); wherein the first luminescent material (210) is a luminescent material of the type M'xM2-2xAX6 doped with tetravalent manganese, wherein M' comprises an alkaline earth cation, M comprises an monovalent cation, x is in the range of 0-1, A comprises a tetravalent cation, and wherein X comprises a monovalent anion, at least comprising fluorine; wherein the first luminescent material (210) is configured to convert at least part of the light source light (11,21,..) into first luminescent material light (211), wherein the first luminescent material light (211) has a first centroid wavelength (λc1) selected from the range of 610-650 nm and having a first full width at half maximum FWHM1 of ≤ 50 nm; and - the first light generating device (110) is configured to generate first device light (111) comprising the first luminescent material light (211); wherein the first device light (111) is red light; wherein the first light generating device (110) is configured such that (i) at least 95% of a spectral power distribution of the first device light (111) in a wavelength range of 380-780 nm is in the wavelength range of 590-780 nm, and at least 60% of a spectral power distribution of the first device light (111) in a wavelength range of 380-780 nm is provided by the first luminescent material light (211) and (ii) in a range of 0-5% of the spectral power distribution of the first device light (111) in the wavelength range of 380-780 nm is provided by the light source light (11,21,..).

The invention provides a light generating system (1000), wherein the light generating system (1000) is configured to generate system light (1001) having a controllable spectral power distribution and intensity, wherein in an operational mode the light generating system (1000) is configured to generate during a first time period P1, a first spectral power distribution E1, and during a second time period P2, later in time than the first period P1, a second spectral power distribution E2, wherein: (A) the controllable spectral power distribution comprises (a) a first spectral range Λ1 having one or more wavelengths in the blue, and having a primary first spectral power SP(P1, Λ1) during the first time period P1 and a secondary first spectral power SP(P2, Λ1) during the second time period P2, (b) a second spectral range Λ2 having one or more wavelengths in the green, and having a primary second spectral power SP(P1, Λ2) during the first time period P1 and a secondary second spectral power SP(P2, Λ2) during the second time period P2, and (c) an amber-red spectral range Λ34 having one or more wavelengths in the amber-red, and having a primary amber-red spectral power SP(P1, Λ34) during the first time period P1 and a secondary amber-red spectral power SP(P2, Λ34) during the second time period P2; (B) the first spectral power distribution E1 comprises the primary first spectral power SP(P1, Λ1), the primary second spectral power SP(P1, Λ2), and the primary amber-red spectral power SP(P1, Λ34); the second spectral power distribution E2 comprises the secondary first spectral power SP(P2, Λ1), the secondary second spectral power SP(P2, Λ2), and the secondary amber-red spectral power SP(P2, Λ34); (C) the first period P1 is selected from of at least part of a day; the second period P2 is selected from the range of at least part of a day; (D) SP(P1, Λ1)>0 Watt, SP(P1, Λ2)>0 Watt, and SP(P1, Λ34)>0 Watt; SP(P2, Λ1>0 Watt, and SP(P2, Λ2)>0 Watt; SP(P2, Λ2) / SP(P2, Λ1)<SP(P1, Λ2) / SP(P1, Λ1); SP(P2, Λ34) / SP(P2, Λ1)<SP(P1, Λ34) / SP(P1, Λ1); and SP(P2, Λ34) / SP(P2, Λ2)<SP(P1, Λ34) / SP(P1, Λ2).

The invention provides a light generating system (1000) comprising one or more primary solid state light sources (50), one or more secondary solid state light sources (60), a first luminescent material arrangement (1210), a second luminescent material arrangement (1220), and a control system (300), wherein: (A) the one or more primary solid state light sources (50) are configured to generate primary light (51); (B) the one or more secondary solid state light sources (60) are configured to generate secondary light (61); (C) the first luminescent material arrangement (1210) is configured in a light receiving relationship with at least one primary solid state light source (50) and is configured to convert at least part of the primary light (51) of the at least one primary solid state light source (50)) into first luminescent material arrangement light (1211); wherein when the at least one primary solid state light source (50) alone irradiates the first luminescent material arrangement (1210) a first spectral power distribution, comprising the primary light (51) (of the at least one primary solid state light source (50)) and the first luminescent material arrangement light (1211), is obtained; (D) the second luminescent material arrangement (1220) is configured in a light receiving relationship with at least one (other) primary solid state light source (50) and is configured to convert at least part of the primary light (51) into second luminescent material arrangement light (1221); wherein when the at least one (other) primary solid state light source (50) alone irradiates the second luminescent material arrangement (1220) a second spectral power distribution, comprising the primary light (51) and the second luminescent material arrangement light (1221), is obtained; (E) the first spectral power distribution and the second spectral power distribution have v′ values differing at least 0.02; wherein the first spectral power distribution has a first color point outside 10 standard deviation of color matching (SDCM) from the black body locus, and wherein the second spectral power distribution has a second color point outside 10 standard deviation of color matching (SDCM) from the black body locus.