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35results about How to "Uniform incidence" patented technology
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Cotton verticillium wilt resistant seedling stage identification method
InactiveCN102732596ARapid onsetSignificant incidenceFungiMicrobiological testing/measurementDiseaseSpore
The invention belongs to the technical field of cotton disease resistance breeding and specifically relates to a cotton verticillium wilt resistant seedling stage identification method. The method provided by the invention comprises the following main steps of: firstly carrying out shaking culture on cotton verticillium wilt germ 6SY2-37 collected in China Center for Type Culture Collection with the collection number being CCTCC NO: M2011095 in a Czapek's liquid medium at the temperature of 25 DEG C for 5d, filtering by the use of gauze, counting by the use of a blood cell counting panel, preparing 5*106 spore / ml, pulling up seedling with a matrix when the water-planting cotton seedling grows to a stage of two leaves and one core, cutting 1cm of water root, dipping the root for 10s and inoculating, embedding wet soil into a plastic earthen bowl, inoculating pathogen, immediately watering to prevent the cotton seedling from fading, inoculating for 10 days and causing the disease. The method provided by the invention has advantages of high survival rate of the cotton seedling after inoculation, uniform inoculated pathogen, rapid morbidity, convenient operation and good stability of results. In addition, the method takes short time, requires short seedling growing time and is convenient to manage. Therefore, the method is suitable for cotton verticillium wilt resistance identification and pathogen pathogenicity differentiation determination of large-batch materials.
Owner:HUAZHONG AGRI UNIV
Optical coupler
ActiveUS20100270483A1Small sizeReduce manufacturing costMicrobiological testing/measurementSolid-state devicesContact lineOptical coupling
An optical coupler has a first terminal board and a second terminal board, a first conversion element for converting an electrical signal into an optical signal mounted on a surface of a first element mounting section of the first terminal board, a second conversion element for converting an optical signal into an electrical signal mounted on a surface of a second element mounting section of the second terminal board; and a light reflective curved surface formed so as to cover the first conversion element and the second conversion element. The surfaces of the first element mounting section and the second element mounting section have the same orientation. An optical signal emitted from the first conversion element is reflected on the light reflective curved surface, to optically couple the first conversion element and the second conversion element. The second conversion element has a plurality of light receiving cells that are electrically connected in series, arrayed in parallel with one another, and longer in a longitudinal direction than in a width direction. The first conversion element is arranged inside an area sandwiched between two contact lines that are set so as to be in contact with an outline of the second conversion element, and are in parallel with a length direction of the light receiving cells.
Owner:ORMON CORP
Air curtain type laser aerosol disinfection device and use method
PendingCN111603599AIncreased ability to inject into the work areaLarge diameterRadiationBacterial virusLight spot
The invention discloses an air curtain type laser aerosol disinfection device and a use method thereof. The device comprises a laser generator, a beam shaper, a polygon prism and a focusing field lens, wherein laser emitted by the laser generator is incident to the beam shaper; the laser beam shaper adjusts the laser into light spots and then uniformly irradiates the light spots into the polygon prism; the focusing field lens is arranged behind the polygon prism; and the laser sequentially passes through the polygon prism and the focusing field lens and then enters a lower working area to perform high-speed scanning on aerosol in a space. The device also comprises an absorption area arranged below the working area and used for absorbing redundant laser energy. The working area is scanned at a high speed through the laser beams so as to effectively kill aerosol in circulating air in the working area and bacteria, viruses and the like in the circulating air, and due to the high directivity characteristic of laser, optical scattering or diffuse reflection cannot be caused, and harm to a human body cannot be caused.
Owner:福建新位激光科技有限公司
Plant disease resistance evaluation method, root injuring method and inoculation method
The invention discloses a plant disease resistance evaluation method, a root injuring method and an inoculation method and belongs to the technical field of plant disease resistance evaluation. The root injuring method comprising the following steps of planting seedlings processed via disinfection and immersion into culturing substrate in a seedling nursing bag, making the seedlings grow via fertilizing application and daily care till the required size, taking the seedling nursing bag out of the culturing substrate arranged outside the bag, wherein the culturing substrate is cultured outside the seedling nursing bag; the seedling nursing bag is weaved by non-woven fabric; the root parts of the plants are exposed out of the seedling nursing bag and grow in the culturing substrate outside the seedling nursing bag; water is watered outside the seedling nursing bag; and the roots exposed out of the seedling nursing bag are pulled apart and root injury is finished. Root injury steps are simplified by the use of the method, effects on plant growth by root injury are reduced, and evaluation result for disease resistance cannot be affected.
Owner:XINJIANG ACADEMY OF AGRI & RECLAMATION SCI
Improved verticillium wilt resistance identification method for cotton variety in artificial disease garden during whole growth period
ActiveCN105359855AUniform incidenceThe Science of Vaccination MethodsHorticulture methodsDiseaseAgricultural science
The invention relates to the field of cotton verticillium wilt identification and specifically relates to an improved verticillium wilt resistance identification method for a cotton variety in an artificial disease garden during a whole growth period. The method comprises the steps that (1) pathogenic bacteria used for identification are cultivated, a corn and sand culture medium is applied, and sand and corn powder are mixed thoroughly according to a mass ratio of 1:1; (2) the disease garden is built and inoculation is carried out, wherein the inoculation of the pathogenic bacteria is carried out by a seed trench inoculation method; (3) states of cotton verticillium wilt are investigated; and (4) verticillium wilt resistance of the cotton variety is evaluated. According to the method provided by the invention, disease attacking is uniform and consistent in the disease garden, so that more accurate disease identification results can be obtained; classification standards of disease state investigation are scientific and can be mastered easily; the disease resistance of the cotton during the whole growth period can be reflected fully; and results are accurate. In addition, the method is economic and environment-friendly.
Owner:INST OF COTTON RES CHINESE ACAD OF AGRI SCI
Radiation device for photodynamic therapy
InactiveCN101518672AReduce internal reflectionsReduce lossesLight therapyPhotosensitive materials for photomechanical apparatusPhotodynamic therapyOptical property
The invention relates to an effective radiation device for photodynamic therapy. The radiation device collects the optimum absorptive wavelength of sclererythrin (also called porphyrin) family photosensitizer at the position close to 405 nm, and utilizes the optical characteristic of tissue, especially deep tissue, and the characteristic of optical interface changing and the like to overcome the difficulty that the emission wavelength within the range is uneasy to deeply penetrate the tissue.
Owner:BEYOND INNOVATION TECH
Optical coupler having first and second terminal boards and first and second conversion elements
ActiveUS8410464B2Reduce manufacturing costIncrease valueSolid-state devicesMaterial analysis by optical meansElectricityEngineering
An optical coupler has a first terminal board and a second terminal board, a first conversion element for converting an electrical signal into an optical signal mounted on a surface of a first element mounting section of the first terminal board, a second conversion element for converting an optical signal into an electrical signal mounted on a surface of a second element mounting section of the second terminal board; and a light reflective curved surface formed so as to cover the first conversion element and the second conversion element. The surfaces of the first element mounting section and the second element mounting section have the same orientation. An optical signal emitted from the first conversion element is reflected on the light reflective curved surface, to optically couple the first conversion element and the second conversion element. The second conversion element has a plurality of light receiving cells that are electrically connected in series, arrayed in parallel with one another, and longer in a longitudinal direction than in a width direction. The first conversion element is arranged inside an area sandwiched between two contact lines that are set so as to be in contact with an outline of the second conversion element, and are in parallel with a length direction of the light receiving cells.
Owner:ORMON CORP
Multi-light-source single-liquid-crystal projection illumination system
The invention relates to the field of liquid crystal projection, and especially relates to a multi-light-source single-liquid-crystal projection illumination system. The technical scheme of the invention is that the system comprises a Fresnel lens; the Fresnel lens is disposed behind a liquid crystal screen; one side, far from the liquid crystal screen, of the Fresnel lens is provided with a plurality of light source modules; each light source module comprises a light equalizing device and a light source, wherein the light equalizing device is disposed at one side, far from the liquid crystal screen, of the Fresnel lens, and the light is disposed at one side, far from the Fresnel lens, of the light equalizing device; the light emitted by the light sources is reflected or refracted by the light equalizing devices, and then enters the Fresnel lens in a quasi-vertical direction; the light passing through the Fresnel lens irradiates the liquid crystal screen. The system provided by the invention solves problems that a conventional liquid crystal screen illumination system is low in utilization rate of light sources, and is high in requirements for the power of the light sources.
Owner:CHENGDU JIUTIAN HUAXIN TECH CO LTD
Inoculation identification method for clubroot of cruciferous crops
InactiveCN107058460AReduce consumptionStable source of bacteriaMicrobiological testing/measurementCultivating equipmentsSmall samplePlasmodiophora
The invention discloses an inoculation identification method for clubroot of cruciferous crops, belongs to the technical field of plant protection, and provides the inoculation identification method for clubroot of cruciferous crops. Aseptic dried sphagnum is used as a carrier for culturing Plasmodiophora by inoculating. The method of the invention has the advantages that the consumption of bacterial sources is low, inoculating efficiency is high, operability is high, pathogenesis is uniform, result stability is good, disease determination is highly sensitive, the method is applicable to the identification of physiological races of small samples and the identification of disease resistance in large-batch varieties, and the method serves for breeding novel disease-resistant varieties and reasonably laying out disease-resistant varieties.
Owner:INST OF PLANT PROTECTION JIANGXI ACAD OF AGRI SCI
Solar plant
InactiveUS20140202522A1Reduce beam divergenceUniform incidenceSolar heating energyFrom solar energyElectricityForms of energy
A solar plant enabling transformation of solar energy exploiting most of the solar spectrum with very efficient yields, including: at least one solar collector including a concentrator, configured to collect and concentrate solar radiation in the concentrator; a solar laser device to transform radiation received from the concentrators into laser radiation; a receiver and / or a solar reactor configured to receive radiation from the laser device and transform it into another form of energy; and can include flexible lightguides or plane mirrors to transport the radiation received from the laser device to the solar reactor and / or receiver, and photovoltaic cells interspersed among the collectors and laser devices to transform the concentrated radiation into electricity and allow radiation not transformed to pass to the laser devices.
Owner:ABENGOA SOLAR NEW TECH SA
Concentrating solar photo-thermal and photoelectric mixed collector
ActiveCN106482356ALower working temperatureNot easy to damageSolar heating energySolar heat devicesThermal deformationEngineering
The invention relates to a concentrating solar photo-thermal and photoelectric mixed collector. The collector comprises quartz heat colleting tubes which are internally filled with semitransparent liquids, a photovoltaic cell and a cooling channel thereof. The collector further comprises reflectors arranged on two sides of the quartz heat collecting tubes, quartz glass tubes externally surrounding the quartz heat collecting tubes, the photovoltaic cell and the battery cooling channel, metal end covers at two ends of the quartz glass tubes and thermal expansion counteracting structures. The quartz glass tubes tightly seal the heat collecting tubes in a vacuum environment, so that the heat loss of the heat collecting tubes is reduced; the quartz heat collecting tubes are designed as single-sided or double-sided concave channels, so that the incident rays at the photovoltaic cell are more uniform, and therefore, the photoelectric efficiency is improved and the pressure bearing capacities of the quartz heat collecting tubes are improved; and the thermal expansion counteracting structures absorb axial thermal deformation at a high temperature of the heat collecting tubes. Compared with the prior art, the solar utilization ratio of the photo-thermal and photoelectric mixed collector is effectively improved, the problems of thermal expansion and pressure resistance of the heat collecting tubes are solved, and the stability of the mixed collector is improved.
Owner:TONGJI UNIV
Illumination system and projection apparatus
ActiveUS20210247677A1Improve uniformityReduce occupied spaceProjectorsOptical elementsLighting systemFirst light
An illumination system, including a first light source for providing a first beam; a second light source for providing a second beam; a wavelength conversion element having a reflection region and a conversion region, wherein the reflection region is for reflecting the first beam and the conversion region is for converting the first beam into a third beam; a first light splitting element for allowing the second beam to pass; a second light splitting element for reflecting the first beam penetrated by the first light splitting element and allowing the second beam to pass, wherein the first light splitting element is disposed between the wavelength conversion element and the second light splitting element; and a light homogenizing element for receiving the first beam, the second beam, and the third beam, and generating an illumination beam, is provided. A projection apparatus including the illumination system is also provided.
Owner:CORETRONIC
Backlight module set
Owner:HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
Light guide plate and manufacturing method thereof
InactiveCN102043189AUniform surface light sourceUniform incidenceOptical light guidesOptoelectronicsLight guide
The invention relates to a light guide plate and a manufacturing method thereof. The light guide plate comprises a plate body and at least one positioning part, wherein the plate body is provided with a light emergent surface, a reflective surface opposite to the light emergent surface and at least one light incident surface which is contacted with the light emergent surface and the reflective surface; and the positioning part is connected to at least one side of the plate body. The method for manufacturing the light guide plate is realized through the following steps: providing at least one light guide plate which comprises a plate body and at least one positioning plate connected to the plate body, wherein the plate body is provided with the light emergent surface, the reflective surface opposite to the light emergent surface and at least one light incident surface contacted with the light emergent surface and the reflective surface; providing a positioning tool which is coupled to the positioning part to fix the plate body; and providing at least one cut tool which treats the light incident surface of the plate body and forms an optical element array on the light incident side. The invention has the beneficial effects that: light can enter into the light incident surface uniformly to provide a uniform area light source.
Owner:苏州茂立光电科技有限公司
Colored photovoltaic module and preparation method thereof
ActiveCN113421932AHigh light transmittanceGuaranteed power generationPhotovoltaic supportsFinal product manufactureAdhesiveEngineering
The invention discloses a colored photovoltaic module and a preparation method thereof. The colored photovoltaic module comprises a front plate glass layer, a power generation glass layer and a back plate glass layer, wherein the two faces of power generation glass of the power generation glass layer are coated with adhesive, a pattern is arranged on front plate glass of the front plate glass layer, the pattern is composed of a plurality of colored glaze color points, the diameter of the colored glaze color points is 10-100 [mu] m, a gap between the adjacent colored glaze color points is 50-200 [mu] m, and the thickness of the front plate glass ranges from 5 mm to 6 mm. The problems that an existing double-glass photovoltaic module is single in color, poor in attractiveness, poor in impact resistance and high in fragment rate are solved.
Owner:CNBM CHENGDU OPTOELECTRONICS MATERIAL
Photoelectric detector and manufacturing method thereof
ActiveCN111863984AFocusUniform incidenceFinal product manufactureSemiconductor devicesPhotovoltaic detectorsRefractive index
The invention discloses a photoelectric detector and a manufacturing method thereof. The photoelectric detector comprises a substrate, a buffer layer which is arranged on the substrate, a waveguide layer which is arranged on one side, far away from the substrate, of the buffer layer, a gradient optical matching layer which is arranged on one side, far away from the buffer layer, of the waveguide layer, an absorption layer and a cathode which are arranged on one side, far away from the waveguide layer, of the gradient optical matching layer, a cladding which is arranged on one side, far away from the gradient optical matching layer, of the absorption layer, a contact layer which is arranged on one side, far away from the absorption layer, of the cladding, and an anode which is arranged on one side of the contact layer, wherein the gradient optical matching layer is a single-layer thin film, and in the first direction, the refractive index of the gradient optical matching layer is gradually increased, and the first direction points from the waveguide layer to the absorption layer. The photoelectric detector is advantaged in that advanced focusing can be realized, coupling efficiencyis improved, device process difficulty is reduced, and cost is reduced.
Owner:UNIV OF SCI & TECH OF CHINA
Device for measuring retroreflection coefficient
InactiveCN106124455AExtended service lifeUniform incidenceScattering properties measurementsLight spotPhotodiode
The invention relates to a device for measuring a retroreflection coefficient. The device comprises an optical system, a photodiode receiver and a retroreflection light spot processing circuit which are all arranged in a shell; the optical system comprises a warm white light diode, a light source small hole diaphragm, a soft light lens, a spectroscope and an achromatic objective lens, wherein the achromatic objective lens and the photodiode receiver are located on the left side and the right side of the spectroscope, and light emitted by the warm white light diode sequentially passes through the light source small hole diaphragm, the soft light lens, the spectroscope and the achromatic objective lens and then is emitted to a retroreflection light membrane layer in parallel; the retroreflection light spot processing circuit comprises a pre-amplification circuit, an A / D conversion circuit and a microprocessor. The device has the advantages of being small in size, high in precision, convenient to operate, suitable for site tests and the like.
Owner:ANHUI UNION SAFE TECH
Method for identifying southern blight disease resistance of peppers
PendingCN111139282AImprove screening efficiencySimple and fast operationMicrobiological testing/measurementMicroorganism based processesBiotechnologyCapsicum annuum
The invention belongs to the technical field of crop disease resistance identification, and particularly relates to a method for identifying southern blight disease resistance of peppers. The method comprises the following steps: (1) activating and culturing pepper southern blight bacteria, and preparing pathogenic bacterium inoculation strips; (2) sowing seeds in a sterilization matrix, culturingpepper seedlings for inoculation, and carrying out inoculation through a bacterium strip embedding method, wherein the inoculation parts of the pepper seedlings are 1 cm away from the base parts of pepper stems; and (3) carrying out daily management after inoculation, recording the disease level of each plant 6 days later, calculating the disease index, and evaluating the disease resistance of pepper varieties to pepper southern blight. The method for identifying the southern blight disease resistance of the peppers is provided for the first time, the inoculation method is simple and convenient to operate, the identification result is accurate and reliable, the disease judgment sensitivity is high, the method is not easily affected by environment and climate factors, morbidity is uniformafter inoculation, result stability is good, the operability is high, and the screening efficiency of disease-resistant materials can be improved favorably.
Owner:HUNAN VEGETABLE RES INST
Water-soluble biological nematicide fermentation method and application
InactiveCN104593271ASolve the fermentation process scale-upShort fermentation cycleBiocideFungiBiotechnologyRoot-knot nematode
The invention discloses a water-soluble biological nematicide fermentation method and application. The fermentation method comprises the steps of Sr18 bacterium activating culture, 200L tank fermentation scale up, 5t tank fermentation scale up, concentrated water preparation, powder preparation and the like. The experimental results show that the fermentation process established by the invention is secondary fermentation, and has the characteristics of simple and easy fermentation process control, short fermentation period, low energy consumption, high yield of active products and the like; the prepared concentrated water has strong activity, no toxic side effects, stability and convenient storage, and the shelf life is more than two years; the preparation is convenient to apply, can be mixed with water according to any proportion, and can also be matched with other pesticides. The biological nematicide obtained by fermentation has a specificity effect on prevention of Meloidogyne incognita Chitwood, Bursaphelenchus xylophilus and vegetable root-knot nematode diseases.
Owner:TIANJIN NORMAL UNIVERSITY
Method for identifying pumpkin bacterial wilt resistant varieties in greenhouse seedling stage
InactiveCN108739130ASimple and fast operationDistinguish between resistance and sensitivityCultivating equipmentsHorticulture methodsDiseased plantAgricultural science
The invention discloses a methodfor identifying pumpkin bacterial wilt resistant varieties in the greenhouse seedling stage. The method comprises the steps of (1) cultivating pumpkin seedlings for inoculation, wherein firstly 2-3 the pumpkin seedlings for inoculation in the true leaf stage are cultivated in a greenhouse; (2) inoculating, whereinpumpkin ralstonia solanacearum is inoculated on the pumpkin seedlings for inoculation by a root soaking inoculation method; (3) conducting an investigation method, whereininvestigation is conducted once a week after inoculation, the total number of plants and the number of diseased plants after inoculation of the pumpkin ralstonia solanacearum are recorded, the diseased plant rate is counted, andthe resistance of the pumpkin varieties to pumpkin bacterial wilt is judged. The method has simple operation, short time required and accurate and reliable identification result, is not affected by the field environment, can significantly distinguish thedifference in resistance of different pumpkin varieties to the bacterial wilt, is suitable for the identification and screeningof resistance of large quantities of pumpkin materialsto the bacterial wilt simultaneously, and is beneficial to improving the screening efficiency of disease-resistant materials.
Owner:PLANT PROTECTION RES INST OF GUANGDONG ACADEMY OF AGRI SCI
Member for cotrolling luminous flux, display device, and light emitting device
InactiveCN104471311AUniform color distributionImprove brightness uniformityElectric lightingIlluminated signsDisplay deviceLuminous flux
The present invention relates to a member for controlling luminous flux including an incident surface receiving light, a reflective surface reflecting the incident light, and a light emitting surface emitting the reflected light to a bottom surface of a plane perpendicular to a central axis connecting a center of the incident surface and a center of the reflective surface, and to a display device and a light emitting device, whereby performance of display device can be enhanced.
Owner:LG INNOTEK CO LTD
Inoculation identification method of clubroot in cruciferous crops
InactiveCN107058460BReduce consumptionStable source of bacteriaMicrobiological testing/measurementLeaf crop cultivationBiotechnologyBrassicaceae
The invention discloses an inoculation identification method for clubroot of cruciferous crops, belongs to the technical field of plant protection, and provides the inoculation identification method for clubroot of cruciferous crops. Aseptic dried sphagnum is used as a carrier for culturing Plasmodiophora by inoculating. The method of the invention has the advantages that the consumption of bacterial sources is low, inoculating efficiency is high, operability is high, pathogenesis is uniform, result stability is good, disease determination is highly sensitive, the method is applicable to the identification of physiological races of small samples and the identification of disease resistance in large-batch varieties, and the method serves for breeding novel disease-resistant varieties and reasonably laying out disease-resistant varieties.
Owner:INST OF PLANT PROTECTION JIANGXI ACAD OF AGRI SCI
exposure system
ActiveCN103119519BConsistent curvatureUniform incidenceProjector film strip handlingCamera film strip handlingEllipseLight exposure
The present invention relates to a light-exposure system, and more specifically relates to a light-exposure system comprising: a light-emitting unit; a film-conveying unit wherein a film makes close contact with the surface thereof and is conveyed while being bent into a circle, an ellipse or the curvature of part thereof; and a pattern-forming unit for forming a polarisation pattern on the film by transmitting, onto the closely contacting film, the light emanating from the light-emitting unit. As a result, the light-exposure system is able to minimise film jittering and weaving even when formation of the polarisation pattern is carried out while the film, which is wound on a roller, is continuously played out, and allows uniform light exposure over a relatively wide region such that the invention is able to contribute to improved quality, notably in the patterned retarder, and increased production efficiency.
Owner:DONGWOO FINE CHEM CO LTD
Seedling inoculation method for identification of resistance to Botrytis cinerea
InactiveCN105557347BSimple and fast operationSignificantly distinguish the difference between resistance and sensitivityMicrobiological testing/measurementHorticulture methodsDiseaseSpore
Owner:INST OF PLANT PROTECTION JIANGXI ACAD OF AGRI SCI
Backlight module set
The invention provides a backlight module. The backlight module includes a light guide plate and at least one light source. The light guide plate includes a light incident surface, a light exit surface connected to the light incident surface, and a bottom surface opposite to the light exit surface. The light source has a light-emitting surface facing the light-incident surface, and the backlight module further includes at least one cylindrical mirror arranged between the light source and the light guide plate, and the divergence angle of the light emitted by the light source becomes larger through the cylindrical mirror.
Owner:HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
Method for identifying tropical resistance of different banana varieties to No. 4 physiological race of fusarium wilt by using tissue culture seedlings
ActiveCN113388662AUniform inoculation conditionsUniform incidenceMicrobiological testing/measurementBiological material analysisSporelingAgriculture
The invention discloses a method for identifying tropical resistance of different banana varieties to No. 4 physiological race of fusarium wilt by using tissue culture seedlings, and belongs to the field of agricultural production and plant protection. The method comprises the following steps: preparing rooting seedlings, preparing an inoculation spore suspension, inoculating pathogenic bacteria, and investigating diseases. According to the method, the pathogenic bacteria are directly inoculated by puncturing leaves of the rooting seedlings in a tissue culture bottle, the tissue culture bottle does not need to be replaced, and the operation is simple; compared with traditional root-damaged inoculation of field plants or greenhouse plants, the method has the advantages that the processes of seedling hardening and plant culture are reduced, the influence of the environment temperature and humidity on the identification result is avoided, and the identification result is accurate and reliable; and the tissue culture seedlings are subjected to disease resistance screening in the indoor tissue culture bottle, the conditions are easy to control, the identification period is greatly shortened, the speed is high, and a large amount of manpower, material resources and space can be saved.
Owner:INST OF AGRI ENVIRONMENT & RESOURCES YUNNAN ACAD OF AGRI SCI +1
A concentrating solar photothermal photoelectric hybrid collector
ActiveCN106482356BReduce heat lossImprove heat production efficiencySolar heating energyPhotovoltaicsThermal deformationThermal expansion
The invention relates to a concentrating solar photo-thermal and photoelectric mixed collector. The collector comprises quartz heat colleting tubes which are internally filled with semitransparent liquids, a photovoltaic cell and a cooling channel thereof. The collector further comprises reflectors arranged on two sides of the quartz heat collecting tubes, quartz glass tubes externally surrounding the quartz heat collecting tubes, the photovoltaic cell and the battery cooling channel, metal end covers at two ends of the quartz glass tubes and thermal expansion counteracting structures. The quartz glass tubes tightly seal the heat collecting tubes in a vacuum environment, so that the heat loss of the heat collecting tubes is reduced; the quartz heat collecting tubes are designed as single-sided or double-sided concave channels, so that the incident rays at the photovoltaic cell are more uniform, and therefore, the photoelectric efficiency is improved and the pressure bearing capacities of the quartz heat collecting tubes are improved; and the thermal expansion counteracting structures absorb axial thermal deformation at a high temperature of the heat collecting tubes. Compared with the prior art, the solar utilization ratio of the photo-thermal and photoelectric mixed collector is effectively improved, the problems of thermal expansion and pressure resistance of the heat collecting tubes are solved, and the stability of the mixed collector is improved.
Owner:TONGJI UNIV
A kind of Pluzobacterium floating type bacterial liquid inoculation method
ActiveCN109652496BUniform incidenceReduce the number of repeated vaccinationsMicrobiological testing/measurementBiotechnologySporeling
Owner:CHONGQING ACAD OF AGRI SCI
Photodetector and method of making the same
ActiveCN111863984BFocusUniform incidenceFinal product manufactureSemiconductor devicesPhotovoltaic detectorsPhotodetector
The invention discloses a photodetector and a manufacturing method thereof. The photodetector comprises: a substrate; a buffer layer arranged on the substrate; a waveguide arranged on the side of the buffer layer away from the substrate layer; a graded optical matching layer arranged on the side of the waveguide layer away from the buffer layer; an absorbing layer and a cathode arranged on the side of the graded optical matching layer away from the waveguide layer; arranged on the absorbing layer away from the buffer layer The cladding layer on one side of the graded optical matching layer; the contact layer arranged on the side of the cladding layer away from the absorption layer; the anode arranged on the side of the contact layer; wherein, the graded optical matching layer is a single layer In a thin film, in a first direction, the refractive index of the graded optical matching layer gradually increases; the first direction is directed from the waveguide layer to the absorption layer. By applying the technical scheme provided by the invention, focusing in advance can be realized, coupling efficiency can be improved, device process difficulty can be reduced, and cost can be reduced.
Owner:UNIV OF SCI & TECH OF CHINA
An Optical System for Measuring Retroreflection Coefficient
ActiveCN104406937BExtended service lifeUniform incidenceScattering properties measurementsBeam splitterOptical coefficient
The invention relates to an optical system for measuring retroreflection coefficient, which comprises an illumination light source, a beam splitter, a mirror, an achromatic objective lens, a filter mirror and a photodiode receiver. The beam splitter is arranged below the illumination source. The reflective mirror, the achromatic objective lens, the filter mirror and the photodiode receiver are respectively arranged on the left and right sides of the illumination light source and the beam splitter. The illumination light source includes a warm white LED lamp, a light source aperture diaphragm, a soft mirror and a scattered light processing device sequentially arranged under the warm white LED lamp. The beam splitter is a transflective beam splitter, and it is obliquely arranged below the scattered light processing device. The reflector is a compound reflector, including a large reflector and a small reflector arranged in pairs. To sum up, the present invention has the characteristics of small size, high precision, convenient operation, variable incidence angle and observation angle, and the like.
Owner:ANHUI UNION SAFE TECH
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