667results about How to "High light conversion efficiency" patented technology

The invention relates to a high-brightness LED underwater lamp with low energy consumption and numerically controlled light color. A groove surface of a double-sided groove type lamp housing is provided with one or more LED chips. A transparent cover is arranged on and matched with one side, where an LED is arranged, of the double-sided groove type lamp housing by a rubber sealing ring in a waterproof sealed manner. Another groove cavity of the double-sided groove type lamp housing is internally provided with a control circuit board, a signal end of which is respectively connected with signal ends of one or more LED chips. A wiring terminal is sealed and connected on a sealing cover plate and a lead of the wiring terminal is connected with the signal end of the control circuit board. The sealing cover plate is sealed and matched with the other side of the double-sided groove type lamp housing. The energy saving lamp has the advantages of firstly, not only avoiding unfavorable effect of the control circuit board on the LED chip, but also considerably improving the optical conversion efficiency of the LED chip; secondly, realizing the direct temperature reduction to the LED chip, decreasing energy consumption, improving the optical conversion efficiency of the LED chip and considerably prolonging the service life of the LED chip; and thirdly, realizing the purpose of direct water-cooled temperature reduction.

The invention discloses an optical-transfer packaging adhesive film which is prepared from the following raw materials in parts by weight: 80-100 parts of ethylene-vinyl acetate copolymer, 0.01-5 parts of crosslinking agent, 0.01-10 parts of antioxidant, 1-10 parts of solubilizer and 1-10 parts of wavelength conversion particle. The adhesive film has the advantages of favorable light transmittance, high optical-transfer efficiency and uniform dispersion.

The invention relates to electronic silver paste and a preparation process thereof, belonging to the technical field of production of such base materials as electronic ceramic components, thick film hybrid circuits, touch components and the like. The electronic silver paste is prepared by mixing and stirring 4-9% of glass powder, 63-80% of silver powder, 12-28% of organic carrier and 0.2-2% of additive, rolling, dispersing and grinding the mixture, then adding 1-2wt% of bismuth stearate, stirring the mixture uniformly and filtering the mixture with a screen. The electronic silver paste and the preparation process have the following beneficial effects: the glass powder system does not contain lead; the minimum grain size and shape of the silver powder are not strictly required; and the silver paste is especially suitable for the positive electrodes of the solar cells on the crystalline silicon solar cell silicon substrates produced in large batch and has excellent electrical property and mechanical property..

A fibril solar cell includes: a fiber-shaped inner core having a porous fiber composed of first carbon nanotubes and a cathode material, in which pores of the porous fiber are filled with second carbon nanotubes, titanium dioxide, a photosensitive dye, and an electron transfer electrolyte; a photoconductive layer formed on a surface of the fiber-shaped inner core and composed of at least one photoconductive polymer; a transparent electrode layer formed on a surface of the photoconductive layer; and a transparent protective layer formed on a surface of the transparent electrode layer and composed of at least one transparent polymer. The fibril solar cell can be mass-produced inexpensively using a polymer. Also, the fibril solar cell has a high efficiency and can be converted into various shapes. The fibril solar cell can be attached to clothing, and be used as a portable power source for mobile electronics.

The invention discloses a quantum dot/epoxy resin particle, a preparation method thereof, a quantum dot optical film and a backlight module. The preparation method of the quantum dot/epoxy resin particle comprises the following steps: pre-dispersing and packaging quantum dots in an epoxy resin block, and grinding the obtained epoxy resin block. The structure of the quantum dot/epoxy resin particle effectively reduces the quantum dot agglomeration and the possibility of interference and destroy caused by agglomeration, and allows the quantum dots to be uniformly dispersed in the obtained optical film, so the quantum dot utilization rate is obviously improved. The phototransformation efficiency and the brightening effect of the backlight module made by using the quantum dot optical film are obviously improved. The backlight module can be applied to a display to realize pure color, high saturation and high color gamut of the R/G/B color sub-pixel units corresponding to color filters and improve the luminescence efficiency.

The diode is comprised of the luminous chip electrode, phosphor and sealing material. The phosphor is comprised of the silicon chloride acid Mg Zn Ca (CMZSC) and alkali earth silicate and pyrosilicate phosphor. This phosphor with the other phosphor of the visible light combines the UV white light and LD. The CMZSC green phosphor can transform the blue light transmitted by the semiconductor compound into yellow light. Thus the transmitting spectrum covered area is broadened and the optical transform effect is improved.

The invention relates to a light source component, a light source system and a projection device. The light source component comprises an exciting light source, a color wheel and a light filter. The exciting light source is used to generate exciting light; first wavelength conversion material which converts the exciting light to first color light is arranged on the color wheel; and the light filter is provided with a first light filtering area which filters the first color light so as to produce second color light, wherein the difference between the dominant wavelengths of the first color light and the second color light is bigger than or equal to 3nm. According to the invention, through the manner, the first wavelength conversion material capable of converting the exciting light to the first color light cooperates with the light filter to generate the second color light, thus avoiding the use of wavelength conversion material which is relatively high in price or poor in performance and directly absorbs the exciting light to generate second color light. Therefore, the cost of the light source system is reduced and the light conversion efficiency of the light source system is improved.

The invention provides a connecting method for a capillary optical fiber and a standard optical fiber, which comprises the following steps: stripping and washing the coating layer at one end of the capillary optical fiber, the standard optical fiber or a multimode optical fiber respectively and cutting a tidy optical fiber head face; fusing and welding through an optical fiber welder; preheating for Delta t seconds at the position where a welding point leans a distance of delta from the standard optical fiber or the multimode optical fiber (the value range of Delta is 0.1 - 3.5mm, the value range of Delta t is 3 - 12 seconds); implementing fused biconical taper to form a tapered light energy distribution area; carrying out optical power monitoring to one end of the capillary optical fiber in the process of fused biconical taper so as to form a tapered coupling area; sheathing a quartz protection sleeve outside of the tapered coupling area and sealing the both ends of the quartz protection sleeve with the standard optical fiber and the capillary optical fiber. The method solves the connection problem of the standard optical fiber and the hollow capillary optical fibers with the same diameter but different cross-sectional area ratio, and has the advantages of easy manufacturing and high light-wave conversion efficiency.

The invention provides a display panel and an optical sheet applying the same. The optical sheet comprises a substrate layer, a light shielding layer, a color light-filtering structure, a scattering layer and a first reflection layer. The light shielding layer is located on the substrate layer. Additionally, the light shielding layer has multiple openings. The color light-filtering structure is installed in at least a part of openings. Additionally, the color light-filtering structure comprises multiple quantum dots. The scattering layer is arranged between the color light-filtering structureand the first reflection layer. The first reflection layer is arranged between the color light-filtering structure and the light shielding layer. Accordingly, the likelihood of activation of the quantum dots is increased through the scattering layer and the first reflection layer. Therefore, light conversion efficiency of the display panel is improved.

The invention provides a coupling method for suspended-core optical fibers. The coatings of the respective ends of a suspended-core optical fiber and a single-core optical fiber are stripped, the suspended-core optical fiber and the single-core optical fiber are washed and cut after stripping, so that the end surfaces of the optical fibers are smooth, an optical fiber welder is used for welding the stripped parts, the fusion points of the two sections of optical fibers are heated to carry out a fused biconical taper process, the optical power is monitored at the same time, the fused biconical taper process is stopped when the waist of the taper is thin enough so that the optical power-monitoring value reaches the predetermined coupling optical power, so that a tapered coupled section is formed, a quartz protective sleeve is sleeved on the tapered coupled section, and both ends of the quartz protective sleeve between the standard optical fiber and the suspended-core optical fiber are sealed. The invention has the advantages of simplicity, easy operation, low cost, stable optical performance, compact structure, high coupling optical power and on-line monitoring and convenient optical fiber integration and sensing application, and provides effective method and technique for directly embedded a suspended-core optical fiber device into a standard single-mode optical fiber communication link.

The invention discloses a cover plate, a manufacturing method of the cover plate, solar glass and a photovoltaic device. The cover plate is suitable for covering a work device, and the work device forms an electric field on the cover plate. The cover plate comprises a light-transmitting matrix, a barrier layer and an anti-reflex layer, wherein the light-transmitting matrix is provided with a first surface and a second surface which are opposite to each other, and the first surface is adjacent to and connected with the work device; the barrier layer is positioned on the first surface of the light-transmitting matrix and is used for preventing substances in the light-transmitting matrix from escaping under the action of the electric field so as to inhibit the performance degradation of the work device; and the anti-reflex layer is positioned on the second surface of the light-transmitting substrate and is used for reducing the reflection of incident light on the second surface of the light-transmitting substrate. The barrier layer is positioned on the first surface adjacent to the work device and can be used for preventing the substances in the light-transmitting substrate from escaping from the first surface under the action the electric field, thereby preventing the substances in the light-transmitting matrix from entering into the work device, and inhibiting the performance degradation, caused by the substances in the light-transmitting matrix, of the work device.

The invention relates to a multi-source integrated color-adjustable light-emitting component and a preparation method thereof. The multi-source integrated color-adjustable light-emitting component and preparation method have the advantages of effectively prolonging the service life of products and increasing the light conversion efficiency of light emitting diodes. The multi-source integrated color-adjustable light-emitting component comprises an electrode layer, a p-type semiconductor contact layer, a p-type semiconductor barrier layer, an active layer, an n-type semiconductor barrier layer,an n-type semiconductor contact layer, and a substrate, which are arranged in sequence from top to bottom, wherein the electrode layer is formed by a plurality of p electrodes and a plurality of n electrodes, which are spaced according to different light wavelength regions, and at least one type of electrodes are insulated from one another to independently regulate and control the regions of different light wavelengths; the energy gap of the p-type semiconductor barrier layer is wider than that of the p-type semiconductor contact layer; the light wavelength range of the active layer is from red light to blue light, the active layer has a light-emitting structure formed by quantum dots and quantum wells, and the positions of the quantum dots are restricted in corresponding regions; and theenergy gap of the n-type semiconductor barrier layer is wider than that of the n-type semiconductor contact layer.

The invention relates to a preparation method for an inorganic-organic core-shell rare-earth (RE) polymer material, wherein core-shell RE-organic complex is a ternary RE-organic complexes LnM1 (M2R') 3R synthesized by a single substituted-benzoic acid compounds (L) and 1, 10-phenanthroline as ligand, as shown in the right figure. The said method includes: (1) preparation of organic RE complexes, (2) preparation of organic RE complexes emulsion, and (3) preparation of core-shell organic RE complexes/PMMA organic RE polymer light-conversion agent. The RE polymer composite has excellent characteristics of high optical conversion efficiency, strong fluorescence, longer fluorescence lifetime and complexes of high transparency, and can be used as a new optical materials in agriculture, biology, electrical and electronics, etc. arious fields. The preparation process is simple.

The present invention belongs to the field of one kind of weather resistant light-converting luminous farm film and its making process. The farm film contains base resin and following added components: at least one kind of visible light excited long afterglow light-converting agent, at least one kind of red light-converting agent, at least one kind of blue light-converting agent, and one compatible antiaging agent. The farm film has the light-converting and luminous characteristics, can luminesce at night stably for long time, so that plant can utilize sunlight effectively for increasing yield, fast maturing and reducing diseases and pests.