93 results about "Spectral power distribution" patented technology

The invention discloses a light source color preference degree evaluation method and device, equipment and a storage medium, and relates to the technical field of light source quality testing. The method comprises the following steps: acquiring a color temperature parameter of a test light source and spectral power distribution in a preset wavelength range, acquiring an associated reference light source based on the color temperature parameter, and calculating reference spectral power distribution; a color quality index is then calculated based on the plurality of test color samples according to the color temperature parameter, the spectral power distribution, and the reference spectral power distribution. Calculating a color gamut space area formed by the test color sample under the test light source according to the spectral power distribution, calculating a color resolution index according to the color gamut space area, and finally calculating a color preference index of the test light source according to the color quality index and the color resolution index. Therefore, the color preference index is calculated according to the color temperature parameter and the reference light source, the calculation process is associated with visual feelings such as visual discrimination, and a basis is provided for accurate evaluation or comparison of the color development quality of different color temperature test light sources through quantitative calculation of the color preference.

The invention provides a light generating system (1000) configured to generate system light (1001) having a spectral power distribution with spectral intensity at a plurality of wavelengths within the wavelength range of 380-780 nm, wherein relative to a total radiant flux of the system light (1001) in the 380-780 nm wavelength range, 15-40% of the total radiant flux is within the 385-440 nm wavelength range, and 60-85% of the total radiant flux is within the 440-780 nm wavelength range, and wherein the system light (1001) has an R9 value of at maximum 85, and a color rendering index selected from the range of 55-85.

The invention provides a light generating system (1000) comprising light generating devices (110,120,130), a luminescent material (200), a control system (300), optics (500), a polarization control system (600), a diffuser system (1710), and a light exit (1090); wherein: (I) each of the light generating devices (110,120,130) comprise a solid-state light source (10,20,30); the luminescent material (200) is configured to convert at least part of the device light received by the luminescent material (200) into luminescent material light (201): the diffuser system (1710) is configured to diffuse at least part of the device light received by the diffuser system (1710) into diffused device light (711); (II) the optics (500) comprise redirection optics (510); wherein the redirection optics (510) comprise polarization based redirection optics (PPBS1,PBS2) and dichroic based redirection optics (DBS1,DBS2); (III) a first dichroic redirection optics (DBS1) is configured to combine first device light (111) and second device light (121) received by the first dichroic redirection optics (DBS1); the polarization control system (600) is configured to control a polarization of device light propagating from the first dichroic redirection optics (DBS1) to the first polarization redirection optics (PPBS1) via the polarization control system (600); the first polarization redirection optics (PPBS1) is configured to direct device light received from the first dichroic redirection optics (DBS1), in dependence of its polarization, to one or more of (a) the luminescent material (200) via second dichroic redirection optics (DBS2) and (b) the diffuser system (1710) via second polarization redirection optics (PBS2); the second dichroic redirection optics (DBS2) is configured to direct device light received from the first polarization redirection optics (PPBS1) to the luminescent material (200) and to direct the luminescent material light (201) to the light exit (1090); the second polarization redirection optics (PBS2) is configured to direct the device light received from the first polarization redirection optics (PPBS1) to the diffuser system (1710) and to direct diffused device light (711) to the light exit (1090); and (IV) the control system (300) is configured to control a spectral power distribution of system light (1001) of the light generating system (1000).

The invention provides a light generating system (1000) configured to generate system light (1001), wherein the light generating system (1000) comprises N first light generating devices (110) and M second light generating devices (120), wherein: (A) each first light generating device (110) comprises a first light source (10) and a first luminescent converter (2100); (B) the first light source (10) is configured to generate first light source light (11); (C) the first luminescent converter (2100) comprises a first luminescent material (210) and a second luminescent material (220); the first luminescent material (210) is configured to convert part of the first light source light (11) into first luminescent material light (211) having a first luminescent material centroid wavelength (λlc1) selected from the range of 510-570 nm; the second luminescent material (220) is configured to convert part of the first light source light (11) into second luminescent material light (221) having a second luminescent material centroid wavelength (λlc2) selected from the range of 625-635 nm; (D) each 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 with at maximum 30% of the spectral power provided by the first light source light (11) and at least 70% of the spectral power provided by the first luminescent material light (211) and the second luminescent material light (221); (E) each second light generating device (120) comprises a second light source (20) and a second luminescent converter (2200); (F) the second light source (20) is configured to generate second light source light (21); (G) the second luminescent converter (2200) comprises a third luminescent material (230); the third luminescent material (230) is configured to convert at least part of the second light source light (21) into third luminescent material light (231) having a third luminescent material centroid wavelength (λlc3) selected from the range of 600-660 nm; (H) each 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 with at least 70% of the spectral power provided by the third luminescent material light (231) and at maximum 30% of the spectral power provided by the second light source light (21); and (I) in a first operational mode of the light generating system (1000), the system light (1001) is white light having a correlated color temperature in a range from 2000-6500 K and a color rendering index of at least 80.

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.

The present invention provides a spectral reconstruction method and system based on optimizing the spectral response function of a digital camera, comprising: measuring the spectral reflectance of a training sample; photographing and obtaining the original format response values of the test sample under different imaging scenes and recording the camera imaging parameters; synchronously measuring the spectral power distribution of the light source of the imaging scene; then, based on a full-parameter imaging model of the digital camera, predicting the raw response values of a training sample set under the same imaging conditions, performing maximum and minimum normalization on the original format response values of the test sample and the predicted response values of the training sample set in three RGB channels, performing spectral characteristic modeling on the camera, and finally performing multi-spectral reconstruction on the test sample under the same imaging conditions to obtain reconstructed spectral data of the test sample.

The invention may provide a light generating system (1000) comprising (i) one or more light generating devices (100), (ii) a first luminescent material (210), (iii) a reflector (2510), (iv) a rotatable element (1200), and (v) a control system (300); wherein the one or more light generating devices (100) are configured to generate device light (101); wherein the one or more light generating devices (100) comprise one or more of a laser diode and a super light emitting diode; the first luminescent material (210) is configured to convert at least a portion of the device light (101) received by the first luminescent material (210) into first luminescent material light (211); the reflector (2510) is configured to reflect at least a portion of the device light (101) received by the reflector (2510) as reflected device light (711); the rotatable element (1200) comprises a first annular section (2131) and a second annular section (2132); the first luminescent material (210) is comprised by at least a portion of the first annular section (2131); and the reflector (2510) is comprised by at least a portion of the second annular section (2132); the light generating system (1000) is configured such that: (a) in an operating mode of the light generating system (1000), the rotatable element (1200) rotates such that different portions of the first annular section (2131) and / or different portions of the second annular section (2132) are illuminated by the device light (101) over time, and (b) the distribution of the device light (101) over the first annular section (2131) and the second annular section (2132) is optically and / or mechanically controllable; and wherein the light generating system (1000) is configured to generate system light (1001), the system light (1001) comprising one or more of first luminescent material light (211) and reflected device light (711); and the control system (300) is configured to control the spectral power distribution of the system light (1001) by optically and / or mechanically controlling the distribution of the device light (101) over the first annular section (2131) and the second annular section (2132).

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 light generating devices (110,120,130), a luminescent material (210), a control system (300), redirection optics (510), a diffuser system (1710), and a light exit (1090); wherein: (A) (i) a first light generating device (110) is configured to provide first device light (111) having a first centroid wavelength (λc1), (ii) a second light generating device (120) is configured to provide second device light (121) having a second centroid wavelength (λc2), and (iii) a third light generating device (130) is configured to provide third device light (131) having a third centroid wavelength (λc3); wherein λc3≠λc1 and λc3≠λc2; wherein the first device light (111), the second device light (121), and the third device light (131) reaching the redirection optics (510) comprise linear polarized light; (B) the luminescent material (210) is configured to convert at least part of device light into luminescent material light (201): (C) the diffuser system (1710) is configured to diffuse at least part of the third device light (131) received by the diffuser system (1710) into diffused device light (711); (D) the redirection optics (510) comprise (a) a first polarizing beam splitter is configured to combine the first device light (111) and the second device light (121); (b) one or more further polarizing beam splitters configured to (a) direct third device light (131) in an optical path to the luminescent element (200) and in an optical path to the diffuser system (1710) in dependence of the linear polarization of the third device light (131), and (ii) split third device light (131) propagating to the diffuser system (1710) from diffused device light (711) emanating from the diffuser system (1710); (c)one or more dichroic based redirection optics are configured to (a) direct the combined device light (116) and at least part of the third device light (131), received from the first polarizing beam splitter to the luminescent element (200), (ii) split the combined device light (116) from the luminescent material light (201), and (iii) direct the luminescent material light (201) and the diffused device light (711) to the light exit (1090); (E) the light generating system (1000) is configured to generate in an operational mode system light (1001) comprising at least part of the luminescent material light (201) and at least part of the diffused light (711), and wherein the system light (1001) is white light; and (F) the control system (300) is configured to control a spectral power distribution of the system light (1001).

The invention provides a light generating system (1000) comprising a first light generating device (110), a second light generating device (120), a luminescent material (200), a control system (300), optics (500), a polarization control system (600), a diffuser system (1710), and a light exit (1090); wherein: in a first operational mode of the light generating system (1000), the first light generating device (110) is configured to provide first device light (111) with a first radiant flux Pl, and the second light generating device (120) is configured to provide second device light (121) with a second radiant flux P2, wherein one of the first radiant flux Pl and the second radiant flux P2 is at least 5% larger than the other one of the first radiant flux Pl and the second radiant flux P2; the luminescent material (200) is configured to convert at least part of the first device light (111) and / or at least part of the second device light (121) received by the luminescent material (200) into luminescent material light (201); the diffuser system (1710) comprises a diffuser (710); wherein the diffuser system (1710) is configured to diffuse at least part of the first device light (111) and / or at least part of the second device light (121) received by the diffuser system (1710) into diffused device light (711); the optics (500) comprise redirection optics (510); wherein the redirection optics (510) comprise a first polarization based redirection optics (PBS1) and a second polarization based redirection optics (PPBS2); the light generating system (1000) is configured to generate system light (1001); the control system (300) is configured to control a spectral power distribution of the system light (1001); and in the first operational mode of the light generating system (1000) the system light is white light (1001) comprising at least part of the luminescent material light (201) and at least part of the diffused device light (711).

The invention provides a light generating system (1000) comprising N light generating devices (110,...), optics (500), M diffuser assemblies (1710,...), and a light exit (1090); wherein: - a first light generating device (110) is configured to generate first device light (111), comprising an emission band having a first emission peak wavelength (λp1); wherein the first device light (111) comprises light having a first linear polarization; a second light generating device (120) is configured to generate second device light (121) comprising an emission band having a second emission peak wavelength (λp2); wherein the second device light (121) comprises light having the first linear polarization; a third light generating device (130) is configured to generate third device light (131), comprising an emission band having a third emission peak wavelength (λp3); and wherein spectral power distributions of the first device light (111), second device light (121), and third device light (131) mutually differ; - a first diffuser assembly (1710) comprises a first polarization converter (711) and a reflective polarization maintaining first diffuser (712); wherein the first polarization converter (711) comprises a ¼λ retarder with a first wavelength λr1m of maximum retardance; wherein λr1m / 4 is selected from the range of (λp1 / 4 + λp2 / 4) / 2 ± 5 nm; the first diffuser assembly (1710) is configured to diffuse at least part of the first device light (111) and at least part of the second device light (121) received by the first diffuser assembly (1710) into first diffused device light (1711) comprising diffused first device light (111) and diffused second device light (121); and the optics (500) are configured such that at least part of the first diffused device light (1711) and the third device light (131) received by the optics (500) are directed to the light exit (1090); - the light generating system (1000) is configured to generate system light (1001); wherein in a first operational mode of the light generating system (1000) the system light (1001) is white light comprising the first diffused device light (1711) and the third device light (131).

The invention provides a light generating system (1000), configured to generate system light (1001), wherein the light generating system (1000) comprises a first light generating arrangement (2000), a second light generating arrangement (3000), a first luminescent material (210), a second luminescent material (220), a diffuser arrangement (710), a control system (300), and optics (500). In embodiments, the optics (500) comprise a first beam divider (TR1), a second beam divider (TR2), a first beam combiner arrangement (C1), a second beam combiner arrangement (C2), a third beam combiner arrangement (C3), and a main beam combiner arrangement (590). The control system (300) is configured to control the spectral power distribution of the system light (1001) by controlling the first light generating arrangement (2000) and the second light generating arrangement (3000).

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.