118 results about "Color rendering index" patented technology

The invention discloses a multi-channel LED spectrum adjusting method and system. The method comprises the steps that a light source containing three LED channels is configured; wherein the first LED channel light source outputs short-wave purple light of 400-430 nm, and a purple light chip packaged by packaging glue containing first fluorescent powder is adopted; the second LED channel light source outputs full-wave-band white light of 400-700 nm, and a purple light chip packaged by packaging glue containing second fluorescent powder is adopted; the third LED channel light source outputs long-wave red light of 700-780 nm, and a blue light chip packaged by packaging glue containing third fluorescent powder is adopted; collecting spectral data of a target area through a four-node cross-distributed spectral sensor to obtain a current spectrum; determining a deviation value between the current spectrum and a preset template; and dynamically adjusting the three LED channel light sources according to the deviation value. The radiation intensity of short-wave purple light and long-wave red light can be remarkably improved, the color rendering index is optimized, and the high-precision illumination requirement is met.

The invention relates to the technical field related to energy-saving illumination control, in particular to an energy-saving illumination method, system and equipment integrating tasks and human body perception, and the method comprises the steps: dividing task scenes, configuring reference illumination parameters, evaluating an illumination comfort index, dynamically adjusting output power and spectral distribution, and determining an adaptive perception interval. And setting an illumination adaptive switching mechanism, when task scene switching is detected, performing illumination parameter smooth transition in combination with the adaptive sensing interval, and generating a non-dominated sorting optimization strategy according to energy consumption feedback and illumination comfort index optimization control. The technical problems that energy-saving control depends on fixed threshold adjustment, excessive low illumination is caused by energy consumption reduction, and visual fatigue is aggravated are solved, task scene division and reference parameter configuration are achieved, fuzzy control is adopted to adjust output power and spectral distribution in real time, and the real-time adjustment of the output power and spectral distribution is achieved in an adaptive sensing interval. Energy consumption optimization is carried out on the premise that the color rendering index and the illumination are guaranteed, and the energy efficiency of the lighting system is improved.

The invention discloses a preparation method of a low-blue-light LED panel lamp, and belongs to the technical field of LED illumination. According to the method, through blue light chip screening, composite fluorescent powder system optimization, multi-layer optical structure design and heat dissipation coordinated regulation and control, the radiation power proportion of the blue light wave band (430-460 nm) is smaller than or equal to 5%, meanwhile, it is guaranteed that the color rendering index Ra is larger than or equal to 85, and the lighting effect is larger than or equal to 100 lm / W. The core innovation of the LED lamp is that the double-effect eye protection layer of quantum dot doped silica gel and cerium yttrium aluminum garnet composite fluorescent powder is adopted, and the optical matching design of the micro-nano texture light guide plate and the gradual change type diffusion film is combined, so that the technical problems that an existing low-blue-light LED lamp is low in lighting effect, poor in color rendering property, uneven in blue light filtering and the like are solved. The blue light hazard level of the prepared LED panel lamp reaches RG0 level, and the LED panel lamp is suitable for long-time close-range illumination scenes such as classrooms, offices and bedrooms and has wide application prospects.

The utility model provides a light source device and a lamp. A containing groove is formed in a support of the light source device. The first blue light chip is arranged on the groove bottom of the accommodating groove, and the first blue light chip is used for emitting blue light of which the peak wavelength is a; the second blue light chip is arranged on the groove bottom of the containing groove, the second blue light chip and the first blue light chip are arranged in a spaced mode, the second blue light chip is used for emitting blue light with the peak wavelength being b, and b is larger than a; the first fluorescent structure covers the first blue light chip; the second fluorescent structure covers the second blue light chip and the first fluorescent structure, and the second fluorescent structure comprises yellow-green fluorescent powder; according to the invention, a regional excitation structure can be formed, light of different colors can be excited in a targeted manner to complement spectrum deficiency, and the overall color rendering index can be improved; meanwhile, mutual absorption loss between different fluorescent structures is reduced through dual-wavelength hierarchical excitation and physical isolation of the fluorescent structures, and optimization of light extraction efficiency is facilitated.

The invention discloses an LED glass cement compatibility testing method, and relates to the technical field of LED testing, and the method comprises the steps: welding an LED at the center of a PCB; uniformly coating the bottom of the high-temperature-resistant glass bottle with glass cement, and after the surface of the glass cement is dried, enabling the opening of the high-temperature-resistant glass bottle to face downwards, surrounding the LED and inversely buckling the high-temperature-resistant glass bottle on the PCB; glass cement consistent with the bottle bottom is smeared on the peripheral side of a bottle opening of the high-temperature-resistant glass bottle, so that the LED and the glass cement at the bottle bottom are sealed in the closed space; putting the LED glass cement compatibility test device into a high-low temperature test box, setting the temperature to be 80 DEG C, the heating time to be 20 minutes and the relative humidity to be 50%, and performing constant-temperature aging for 500 hours; taking out the aged LED glass cement compatibility test device from the high-low temperature test box, separating the high-temperature-resistant glass bottle from the PCB, communicating a positive lead and a negative lead of the PCB with a circuit, electrifying the LED, measuring the aged color temperature value, and calculating whether the color temperature change rate, the color rendering index and the color tolerance of the LED reach set thresholds or not.

The utility model discloses an LED light source structure comprising a substrate, the substrate is connected with a light emitting unit and a first light blocking ring surrounding the outer side of the light emitting unit, and the light emitting unit comprises a purple light LED wafer, a blue light LED wafer, an ultraviolet light LED wafer, a red light generating structure and an infrared light generating structure. The surface of the blue light LED wafer is provided with first fluorescent powder or first fluorescent conversion glue capable of converting part of blue light into yellow light, purple light, blue light, yellow light, ultraviolet light, red light and infrared light are integrated, the light source structure can generate wider spectral distribution, and the color quality and the color rendering index of light are improved. The lighting quality can be improved, and the requirements of specific application fields such as plant growth lamps, special lighting in medical equipment and the like can be met. Through the design of the multi-wavelength LED wafer combination, spectral components are controlled more accurately, so that the energy conversion efficiency is optimized, unnecessary energy loss is reduced, higher luminous efficiency is achieved, and meanwhile energy consumption is reduced.

The application relates to the field of LED health lighting, and discloses a method for LED mixed generation of sunlight-like white light and an LED lamp set. The method comprises the following steps: determining the color points of each LED lamp bead around a blackbody radiation line, independently packaging each LED lamp bead, and comprising LED chips with specific peak wavelengths and various fluorescent powders; determining l target sunlight-like white light color points on the blackbody radiation line, and calculating l groups of luminous flux parameters; selecting a group of luminous flux parameters from the l groups of luminous flux parameters according to a preset target, and using the group of luminous flux parameters to control the m LED lamp beads to form mixed light, i.e. sunlight-like white light. According to the combination of different intensities of various light sources, the application changes the single waveband excitation of fluorescent powder for emitting white light by the existing full-spectrum white light LED into multi-waveband LED chip mixed dimming, fills the gap of the spectrum of about 480 nm, has a higher color rendering index, and has a more continuous mixed spectrum, and can realize sunlight-like dimming along the blackbody radiation line.

A light emitting device includes a light emitting element having a light emission peak wavelength of 430 nm or more and 470 nm or less, and a fluorescent member containing a first fluorescent material having a light emission peak wavelength of 510 nm or more and less than 590 nm and a second fluorescent material having a light emission peak wavelength of 590 nm or more and 670 nm or less and containing a first fluoride fluorescent material having a composition included in the compositional formula represented by the following formula (1):where A1 includes K, M1 includes Si and Al, a and b satisfy 0<a<0.2 and 5<b<7, and c represents the absolute value of the charge of [M11-aMnaFb] ions.The light emitting device satisfies the following condition (A) or (B):the condition (A) is that an average color rendering index Ra is 80 or more and 90 or less and a color rendering index R9 is 50 or more and 90 or less; andthe condition (B) is that an average color rendering index Ra is 80 or more and 87 or less and a color rendering index R9 is 50 or more.

The utility model relates to the technical field of LED light sources, and discloses an LED light source capable of improving spectral continuity, which comprises a substrate, the substrate is provided with a light-emitting area, and the light-emitting area is provided with a plurality of short-wave blue light-emitting chips, a plurality of long-wave blue light-emitting chips and a plurality of red light-emitting chips; the light-emitting area is filled with a fluorescent glue layer; the fluorescent glue layer covers the plurality of short-wave blue light-emitting chips, the plurality of long-wave blue light-emitting chips and the plurality of red light-emitting chips; green fluorescent powder and red fluorescent powder are mixed in the fluorescent glue layer; in the process that light rays emitted by the short-wave blue light emitting chips, the long-wave blue light emitting chips and the red light emitting chips penetrate through the fluorescent glue layer, green fluorescent powder and red fluorescent powder are excited respectively, so that the emitted light rays are high in spectral continuity and have the advantages of being high in color temperature, low in blue light, high in color rendition degree and the like; the light emitted by the LED light source is closer to the solar spectrum, and the color rendering index is higher.

The invention provides a light source device and a lamp, a light emitting chip of the light source device is used for outputting first color light, the first color light is blue light, and first sub-color light and second sub-color light of the first color light are arranged along a continuous and progressive increasing wave band; the fluorescent structure is configured to absorb the first sub-color light and excite second color light based on the first sub-color light, and the wave band of the second color light is larger than that of the first color light; the fluorescent structure is further configured to transmit the second sub-color light so as to output mixed color light of the mixed second sub-color light and the second color light; the blue light chip is adopted to output the mixed color light, the cost can be reduced, the first color light is divided into the first sub-color light and the second sub-color light, the first sub-color light is used for exciting the second color light such as yellow-green light and dark red light, the second sub-color light directly emits out to compensate for the blue light wave band which is originally lost in the mixed color light, and the light efficiency is improved. And the color rendering index of the mixed color light can be improved.

The application provides a method for calculating the duty cycle of white light color temperature when RGBY four-way mixed light is generated, which comprises the following steps: four color points of RGBY form a quadrilateral on a CIE 1931 chromaticity diagram; an intersection A1(x A1 , y A1 ) of the straight line and the straight line is obtained; two intersections of the straight line and the other two straight lines are obtained, and only one of the two intersections is located in the interior of a triangle formed by three color points of three-way light used for mixed light, and the one is selected as A2(x A2 , y A2 ); a line segment connecting A1(x A1 , y A1 ) and A2(x A2 , y A2 ) is divided into n nodes, the corresponding duty cycles are calculated by using the three color points of the three-way light used for mixed light, and the duty cycle of the remaining one-way light is calculated by using a two-way mixed light algorithm; the highest color rendering index duty cycle is selected from the obtained n groups of duty cycles; and the relationship between the duty cycle of the four-way light and the color temperature is fitted into a function. The method can effectively reduce the product cost and improve the use value of the RGB mixed light product.

The invention provides a light generating device (100) comprising (i) a solid state light source (10) and (ii) a luminescent material element (200); wherein the solid state light source (10) is configured to generate light source light (11), wherein the luminescent material element (200) is configured to convert at least part of the light source light (11) into luminescent material light (201); wherein the light generating device (100) is configured to generate device light (101) comprising luminescent material light (201) and light source light (11) and having a color rendering index of at least 65; wherein the luminescent material element (200) comprises n1 first luminescent materials (210) being configured to emit luminescent material light having a centroid wavelength in the 440-590 nm wavelength range, and n2 second luminescent materials (220) being configured to emit luminescent material light having a centroid wavelength in the 590-780 nm wavelength range, wherein n1≥3, n2≥0, and (n1+n2)≥5.

The invention discloses a method and device for improving the color rendering index of an LED display screen, and the method comprises the steps: adding a first white light sub-pixel W1 and a second white light sub-pixel W2 in an RGB display unit of the LED display screen, and forming an RGBW1W2 screen; the method comprises the following steps: acquiring brightness characteristics of each sub-pixel in an RGBW1W2 screen, and constructing an RGBW1W2 screen characteristic conversion matrix according to the brightness characteristics; according to the to-be-transmitted rgb signal and the RGBW1W2 screen characteristic conversion matrix, obtaining an output signal of each sub-pixel in the RGBW1W2 screen; color temperature adjustment is achieved by adjusting the output proportion of the first white light sub-pixel W1 and the second white light sub-pixel W2. By adding W1 and W2 in the RGB display screen, the color temperature of the screen can be accurate, and a high color rendering index can be kept. Meanwhile, the method can ensure that the color temperature of the screen is accurate.

The invention discloses a light source device and an optical system. The light source device comprises an exciting light module, a fluorescent module, a supplementary light module, a light combining part and a relay module. One of the first shaping unit and the second shaping unit is selectively located on a light path where the first exciting light is located so as to generate second exciting light. The fluorescent module is arranged on the light path where the second exciting light is located to generate specified fluorescent light, and the light combining piece is movably arranged on the light path where the specified fluorescent light is located. When the first shaping unit is located on the light path where the first exciting light is located, the light combining part is located on the light path where the specified fluorescence is located and used for combining the specified fluorescence and the supplementary light generated by the supplementary light module. The wavelength interval where the supplementary light is located does not coincide with the wavelength interval where the specified fluorescence is located, so that the problem that the spectrum of the specified fluorescence is narrow can be solved by adding the supplementary light, the overall spectrum of the specified light becomes continuous and smooth, and the color rendering index of the light source device is increased.

The invention discloses a golden LED light source module, a light distribution method thereof and a golden LED lamp, and the light distribution method comprises the steps: testing the parameters of a yellow LED chip and a red LED chip under the current density of 1A / cm < 2 >-10A / cm < 2 >, and building an LED light source database; the target luminous flux phi and the current density J of the golden LED light source module are determined; selecting a yellow light LED chip and a red light LED chip from the light source database, and calculating the total luminous flux phi 1 of the selected yellow light LED chip and the total luminous flux phi 2 of the selected red light LED chip meeting the requirements of the golden light color temperature and the color rendering index under the current density J according to the target luminous flux of the golden light LED light source module; calculating the required particle number N of the yellow light LED chip and the required particle number M of the red light LED chip according to the phi 1, the phi 2, the spectrum and the luminous flux parameters of the selected yellow light LED chip and the red light LED chip; and synthesizing the yellow light LED chip and the red light LED chip into golden light lamp beads, and combining the golden light lamp beads to obtain the golden light LED light source module.

This invention discloses an LED spectral distribution optimization design method and an LED light source. The design method includes the following steps: S1, establishing a basis function library based on the Gaussian emission spectral function of phosphor materials; S2, defining the full spectral distribution function and optimization variables of the phosphor mixture; S3, constructing a comprehensive evaluation function and constraints based on color temperature, spectral efficacy, and color rendering index; S4, applying simulated annealing algorithm for optimization, aiming to minimize the comprehensive evaluation function, and globally optimizing the basis function weight vector w; S5, adjusting the comprehensive evaluation function and constraints and iteratively optimizing. This design method is applicable to the spectral control of white LEDs excited by multi-color phosphors, and can achieve synergistic optimization of color rendering index, color temperature accuracy, and luminous efficacy over a wide color temperature range, significantly improving the overall light quality and design efficiency of the LED light source.

The invention relates to the technical field of lighting lamps, in particular to a light generation method giving consideration to both color rendering and luminous efficiency, a light source comprises a high-efficiency LED and a high-color rendering LED, and the method comprises the following steps: acquiring a light source irradiation mode of the current light source; respectively matching a first illumination parameter of the high-efficiency LED and a second illumination parameter of the high-color-rendering LED according to the light source irradiation mode; first projection light projected by the high-efficiency LED is adjusted according to the first illumination parameter, second projection light projected by the high-color-rendering LED is adjusted according to the second illumination parameter, the first projection light and the second projection light are projected at the same time and form mixed light, and the CRI value and the luminous flux of the mixed light both meet the set requirements of the light source irradiation mode. The high-color-rendering LED can be matched with the high-efficiency LED with the power consumption originally small enough without full-power operation, light with the CRI value high enough is achieved in a light mixing mode, and therefore the problem that the power consumption is too large due to full-power operation of the high-color-rendering LED is solved, and the endurance of the whole light source is prolonged.

This utility model relates to the field of lighting display technology, and more particularly to a stage lighting system. The stage lighting system includes: a stage light and a driving structure; the stage light includes a light source, a reflector, a color temperature mixing component, and an imaging component; the driving structure is mechanically connected to the color temperature mixing component; the reflector, color temperature mixing component, and imaging component are arranged sequentially along the light path transmission direction of the light source; the color temperature mixing component includes a first filter, a second filter, a third filter, and a color temperature adjustment filter, which are arranged in a staggered manner along the light path transmission direction; two filter halves of each filter are arranged opposite each other on both sides of the light path transmission direction; two color temperature adjustment halves of the color temperature adjustment filter are also arranged opposite each other on both sides of the light path transmission direction. This utility model's technical solution can achieve a color rendering index (CRI) of over 70 for stage lights under low color temperature and low brightness conditions.

This invention belongs to the field of luminescent materials technology, specifically disclosing a metal halide luminescent material, its preparation method, and its application. It involves reacting cuprous halide and tetraethylammonium halide to synthesize crystals emitting blue, white, and yellow light, thus completing the (TEA)₂Cu₂X luminescent material. y The preparation of the crystal enabled tunable emission spectra within the visible light region, resulting in a single-component white light emission crystal (TEA)2Cu2Br2Cl2 with excellent color rendering index and ultra-wideband emission. This single-component white light crystal exhibits ultra-wideband emission characteristics, with a full width at half maximum (FWHM) of 300 nm and CIE coordinates of (0.32, 0.32), very close to the CIE coordinates of pure white light (0.33, 0.33). These characteristics make it an ideal choice for natural white LED applications, and when fabricated into white light emission devices, it achieves a color rendering index as high as 95. Furthermore, it contains no rare earth elements, making it an environmentally friendly material. Its preparation process is simple and low-cost, enabling large-scale industrial production.

The lighting device includes a respective plurality of first and second light emitting diodes (M-LEDs, N-LEDs) arranged on a carrier. Each M-LED comprises a die having a first surface region SA1, the first surface region SA1 having a maximum spatial range SE1 of at most 100 microns. The N-LEDs are arranged on the carrier, each N-LED comprising a die having a second surface region SA2, the second surface region SA2 having a maximum spatial range SE2 of at most 300 microns. The M-LED emits a first light LG1 having a first emission peak wavelength in ultraviolet light, violet light, and / or blue light. The N-LED emits second light LG2 having a second emission peak wavelength in green light and / or red light. The ratio defined by SA2 / SA1 is equal to or greater than 10. The device light is white light having a correlated color temperature (CCT) in the range of 2000-6500 K and a color rendering index of at least 80.

The utility model discloses a wavelength conversion assembly and lighting equipment. The wavelength conversion assembly comprises a supporting piece, a first wavelength conversion layer and a second wavelength conversion layer. Wherein the first wavelength conversion layer comprises a bearing part and a protruding part which are connected with each other; the bearing part is arranged on the supporting piece, and the side, away from the supporting piece, of the bearing part is provided with a first area and a second area, the protruding part is located in the first area and protrudes relative to the bearing part. The second wavelength conversion layer is wound on the periphery of the protruding part and covers the second area; wherein the second wavelength conversion layer comprises red fluorescent particles. The second wavelength conversion layer is doped with the red fluorescent particles, so that the specified laser can be converted into red fluorescence under the excitation of the red fluorescent particles. When the wavelength conversion assembly is configured in the lighting equipment, the lighting light generated by the lighting equipment can be mixed with the red light component, so that the color rendering index of the lighting light is improved, and the lighting equipment can meet the application scene with the high color rendering index.

This invention discloses a low color temperature LED light source, comprising: a packaging substrate; a yellow LED chip and a blue LED chip, fixed to the packaging substrate by a die-bonding layer; a silicone mixture coated on the blue LED chip; the silicone mixture is doped with red phosphor, the peak wavelength range of which is 600nm to 640nm; wherein, both the yellow and blue LED chips are gallium nitride-based LED chips, the peak wavelength range of which is 540nm to 590nm for the yellow LED chip and 440nm to 460nm for the blue LED chip; the color temperature of the low color temperature LED light source is 1600K-2500K, and the color rendering index Ra≥70. By coating the blue LED chip with a silicone mixture doped with red phosphor, a portion of the blue light is converted into red light, thereby mixing to form low color temperature white light. Simultaneously, using only red phosphor effectively avoids the sedimentation and uncontrolled ratio problems that occur when different colored phosphors are mixed and coated, ensuring the long-term stability of the light source's color temperature from a physical structure perspective.

The embodiment of the invention discloses a multiband LED epitaxial structure. A multi-quantum well light-emitting layer of the multiband LED epitaxial structure comprises a first blue light InGaN layer, a first green light InGaN layer, a first quantum barrier layer, a first energy band regulation and control layer, a second blue light InGaN layer, a second energy band regulation and control layer and a second quantum barrier layer which are sequentially, periodically and alternately grown in the epitaxial direction. The first energy band regulation and control layer comprises a first N-polarity GaN layer and a first AlGaN layer which are stacked in sequence, the first AlGaN layer is of a multi-layer structure, and the Al component content of the first AlGaN layer is gradually increased in sequence in the epitaxial direction; the second energy band regulation and control layer comprises a second N-polarity GaN layer and a second AlGaN layer which are sequentially stacked, the second AlGaN layer is of a multi-layer structure, and the Al component content of the second AlGaN layer is sequentially decreased in the epitaxial direction; wherein N-polarity heat treatment needs to be carried out in an NH3 atmosphere after the first N-polarity GaN layer is deposited and after the second N-polarity GaN layer is deposited. According to the invention, the damage of the LED white light source to eyes can be reduced, and the LED white light source has good color rendering index and high luminous efficiency.

The lighting device includes a respective plurality of first and second light emitting diodes (M-LEDs, N-LEDs) arranged on a carrier. The M-LED includes a die having a first surface region SA1, the first surface region SA1 having a maximum spatial range SE1 of up to (100) microns. The N-LED includes a die having a second surface region SA2, the second surface region SA2 having a maximum spatial range SE2 of at most (300) microns. The M-LED emits first light having a first emission peak in green light. The N-LED is configured to emit second light having a second emission peak in blue light, and is configured to emit third light having a third emission peak in red light. The ratio defined by SA2 / SA1 is equal to or greater than (10), and the device light is white light having a correlated color temperature in the range of 2000 K to 6500 K and a color rendering index of at least (80).

Disclosed in the present invention is a preparation method for a surface plasmon enhanced Mn4+-doped double perovskite fluorescent powder, which preparation method comprises: S1, selecting specific A, B' and B'' source compounds, mixing same according to a stoichiometric ratio, adding zirconium oxide balls into a ball milling tank, subjecting the mixture to planetary ball milling for 3-8 hours, then placing the mixture into an alumina crucible, sintering same at 900-1300°C for 6-15 hours to obtain a matrix, cooling the matrix, and subjecting same to a particle size treatment and XRD detection; S2, selecting an Mn4+-containing compound, and subjecting same having a concentration of 0.1-5 mol% and the matrix to ball milling for 2-6 hours; and S3, subjecting a metal salt solution and the material obtained in the previous step to an ultrasonic treatment, so as to achieve a metal nano treatment. The luminous efficiency of the fluorescent powder of the present invention is significantly improved; the intensity can be improved by 30-50% compared with that of a traditional fluorescent powder; and color regulation and control are accurate, such that multicolor fluorescence emission can be achieved. The color saturation and luminous efficiency can be improved when the fluorescent powder is applied to a display technology; the color rendering index and luminous efficiency can be improved when the fluorescent powder is used for illumination; and the anti-counterfeiting effect in the anti-counterfeiting field is enhanced. In addition, the fluorescent powder has good chemical stability, and the preparation thereof is easy to control, which are beneficial for industrial production and multi-field application expansion.

The invention relates to an ultraviolet-blue light filtering type conjugated organic chromophore as well as a preparation method and application thereof, the ultraviolet-blue light filtering type conjugated organic chromophore provided by the invention is prepared by taking benzothiadiazole as a core, fusing heterocyclic ring units on two sides and introducing an aldehyde group (CHO) substituent, can be dissolved in organic solvents such as chloroform and chlorobenzene, and has excellent film-forming property. The material has strong absorption in the wave band of 350-550 nm, the maximum absorption peak is at the position of 460 nm, and the blue light hazard wave band can be accurately covered. When the material is applied to a semitransparent organic solar cell, the color rendering index (CRI) reaches 92 or above, and the material is responsive to 300-400 nm near ultraviolet light. The material can be widely applied to photoelectron protection materials, display device coatings and eye protection products, and the problems that an existing material excessively absorbs red light and is low in CRI are solved.

The invention discloses a high-color-rendering-index white light device and a preparation method and application thereof, yellow YAG and wide-band red and green nitride fluorescent powder improve the color rendering index of an LED, a flexible polymer is used as a packaging material, and the high-color-rendering-index white light LED device applied to a lighting source is prepared; red fluorescent powder and green fluorescent powder are added on the basis of yellow fluorescent powder, and a white light LED device with the color rendering index of 96.9 is obtained. The color rendering index is high, meanwhile, the mass ratio of the 6901A silica gel to the 6901B silica gel is adjusted, the fluorescent powder is packaged, and the flexible fluorescent powder composite light-emitting film with the maximum deformation displacement and the optimal fracture stress is obtained and used for device preparation. The color rendering index of the device can be effectively improved, and the adopted packaging film can still show excellent mechanical properties when subjected to stretching and cyclic physical deformation. Wide application prospects are realized in the fields of high-performance white light LED lighting devices, wearable equipment and flexible display.

The utility model discloses a light source device and lighting equipment. The light source device comprises an exciting light source, a wavelength conversion piece and a light filtering piece. The exciting light source comprises N laser chips, and N paths of laser generated by the N laser chips jointly form exciting light. The wavelength conversion piece is arranged on the light path where the exciting light is located and used for converting part of light in the exciting light into specified fluorescent light, and part of light, not converted by the wavelength conversion piece, in the exciting light is combined with the specified fluorescent light to form illumination light. The light filtering part is arranged on a light path where the illumination light rays are located and used for filtering part of the first target light rays in the illumination light rays so as to increase the proportion of the second target light rays in the illumination light rays; wherein the wavelength of the second target light is greater than that of the first target light. According to the light source device, under the condition that high-power illumination is achieved, the color rendering index of the illumination light can be increased, and therefore the product competitiveness of the illumination equipment provided with the light source device is guaranteed.

The invention discloses a neodymium plasma light source, and belongs to the technical field of plasma light sources, and the neodymium plasma light source comprises a magnetron which is used for generating microwaves; the microwave resonant cavity is in a semi-elliptic cylinder shape, a reflective mirror and an electrodeless discharge lamp tube are arranged in the microwave resonant cavity, and the electrodeless discharge lamp tube is filled with neodymium halide, tin halide, sodium halide and starting gas; one end of the waveguide tube is connected with the magnetron, and the other end of the waveguide tube is connected with the microwave resonant cavity; the color rendering index of the neodymium plasma light source is better than 95, the correlated color temperature is about 6000 K, and a spectrum curve is characterized in that a peak value appears around 480 nm and is similar to a solar spectrum.

The utility model discloses a wavelength conversion assembly and lighting equipment. The wavelength conversion assembly comprises a supporting piece, a first wavelength conversion layer and a second wavelength conversion layer. Wherein the first wavelength conversion layer is arranged on the supporting piece, and the side, away from the supporting piece, of the first wavelength conversion layer is provided with a first area and a second area which are adjacent. The second wavelength conversion layer is arranged in the second area, and the second wavelength conversion layer comprises red fluorescent particles. According to the invention, the second wavelength conversion layer is doped with the red fluorescent particles, so that the specified laser can be converted into red fluorescence under the excitation of the red fluorescent particles. Therefore, when the wavelength conversion assembly is configured in the lighting equipment, the lighting light generated by the lighting equipment can be mixed with the red light component, so that the color rendering index of the lighting light is improved, and the lighting equipment can meet the application scene with the high color rendering index.