9results about How to "High color rendering index" patented technology

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.

The invention relates to the field of organic light-emitting materials, and discloses a color conversion composition, a blue light-driven LED and a preparation method thereof, organic boron heteropolycyclic aromatic hydrocarbon organic light-emitting materials (BODIPY and BN) in the color conversion composition are utilized, the molar extinction coefficient is large, the emission spectrum half-peak width is very narrow (10-50 nm), the quantum yield is high, and the thermal stability and chemical stability are good. Compared with the prior art, the color conversion film provided by the invention has the characteristics of simple structure and diverse structure, can realize complete coverage from the whole visible light area to the near-infrared light area, and has excellent compatibility with a base material (such as binder resin), so that the color conversion film with excellent performance is formed, and green light and red light with high luminous efficiency and high color purity can be obtained when the color conversion film is applied to an LED driven by blue light, so that the color rendering index of the LED is improved.

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 application belongs to the technical field of RGB mixed light, and provides a light emitting device, a light mixing method, a light mixing device, a terminal device and a storage medium. B = 0.1474 ± 0.100, y B = 0.0330 ± 0.100; a green light source with a peak wavelength of 536nm ± 10nm and a half wave width greater than 100nm, color coordinates on a CIExyY chromaticity diagram are x G = 0.3899 ± 0.100, y G = 0.5381 ± 0.100; and a red light source with a peak wavelength of 630nm ± 10nm and a half wave width greater than 75nm, color coordinates on a CIExyY chromaticity diagram are x R = 0.6358 ± 0.100, y R = 0.3192 ± 0.100. The light emitting device provided by the application has high color rendering index and light efficiency of mixed white light.

The application provides a full-spectrum complex-phase fluorescent ceramic and a preparation method and application thereof. 1‑x‑y Sr y AlSiN3:xEu (0 1‑x‑a‑b Y a Gd b )3(Al 1‑c Ga c )5O 12 :xCe (0 12 The short-time ceramic sintering and the faster temperature rising and falling rate in the application effectively slow down the grain growth in the ceramic sintering process, and in the short-time sintering process, the nitride powder forms the oxide phase in situ without causing large decomposition or sintering so as to make it invalid. In short, through the short-time high-temperature pulse sintering, the sintering densification of the complex-phase ceramic is promoted, and the nitride phase is avoided from being oxidized in the long-time high-temperature process to cause the sharp drop of the luminous efficiency.

This application provides an LED lamp bead and an LED light source, belonging to the field of LED technology. It includes: a substrate; at least one blue LED chip located on the substrate; and a phosphor layer located on the substrate and the blue LED chip. The phosphor layer contains a first nitride red phosphor, a second nitride red phosphor, a fluoride red phosphor, a green phosphor, and a yellow-green phosphor. The peak wavelength of the fluoride red phosphor is greater than the peak wavelength of the first nitride red phosphor and less than the peak wavelength of the second nitride red phosphor. This allows the LED lamp bead to achieve both a high color rendering index and good luminous efficiency.

The invention relates to the technical field of illumination, in particular to a composite luminescent material, a luminous body and a lamp. The composite luminescent material comprises a white light material and a near-infrared fluorescent material, wherein the color temperature of white light emitted by the white light material is 2400-3000 K; after the normalization processing, the emission spectrogram of the white light material and the excitation spectrogram of the near-infrared fluorescent material at least partially coincide with each other under the curve area, and the ratio of the coincide area to the excitation spectrogram under the curve area is greater than or equal to 70%. The white light material can excite the near-infrared fluorescent material to emit near-infrared light, so that the composite luminescent material can emit white visible light and near-infrared light, and illumination and human health promotion are both considered. The area of the overlapping area is large, the excitation effect of white light on the near-infrared fluorescent material is improved, and the energy conversion efficiency is improved. The color temperature of the white light is beneficial to reducing color temperature shift, so that visible light finally emitted by the composite luminescent material is warm white light, and the composite luminescent material is suitable for bedroom illumination and other scenes.

The white light LED light source with good color rendering effect has the advantages that the red light emitted by the red fluorescent powder can increase the red light component in the white light, effectively improves the color rendering index (CRI) and special color rendering index (R9) of the white light, and the light source has good color rendering effect. Since the red fluorescent powder surrounds the yellow fluorescent powder, the red fluorescent powder can absorb the excessive blue light escaping from the yellow fluorescent powder area, and the red light emitted by the red fluorescent powder and radiating outward from the peripheral side will not be absorbed by the yellow fluorescent powder, so that the effective output of the red light can be ensured.

The utility model provides a light source device and a lamp, the light source device comprises a support and a plurality of light-emitting chips, and the support is provided with a first electrode and a second electrode; the plurality of light-emitting chips are arranged on the bracket, the plurality of light-emitting chips comprise a plurality of blue light chips and at least one purple light chip, the plurality of blue light chips are used for exciting a plurality of blue light with different peak wavelengths, and the plurality of purple light chips are used for exciting blue light with different peak wavelengths from the plurality of blue light; wherein the plurality of light-emitting chips are respectively arranged on the first electrode and the second electrode, at least one of the plurality of light-emitting chips is arranged on the first electrode, and at least one of the plurality of light-emitting chips is arranged on the second electrode; on one hand, the purple light part of the spectrum is compensated through the purple light chip, the spectrum continuity can be enhanced, and the color rendering index and the saturated blue index can be improved; and on the other hand, blue light with different peak wavelengths is excited in a segmented manner through the plurality of blue light chips, so that the energy peak value of the blue light can be dispersed, and the blue light harm can be reduced.