119 results about "Light quality" patented technology

The invention discloses a photovoltaic ecological system based on a holographic frequency division technology. The photovoltaic ecological system comprises a frame body; the frequency-division concentrating photovoltaic unit comprises a substrate layer which is formed by connecting a heat conducting plate and a dodging plate and is connected with the frame body through a reciprocating motion mechanism, a concentrating layer and a holographic grating layer which are sequentially arranged above the heat conducting plate, and a photoelectric conversion battery arranged on the heat conducting plate; the light adjusting unit is arranged between the two adjacent frequency division concentrating photovoltaic units and comprises two frequency division plates connected through a rotating pair, and the ends, away from each other, of the two frequency division plates are connected with the corresponding frequency division concentrating photovoltaic units through rotating pairs; the reflective optical baffles are arranged on the two sides of the substrate layer, and side wall batteries are further arranged on the sides, close to the light adjusting units, of the reflective optical baffles. According to the invention, through a spectrum frequency division and space light energy distribution mechanism, multi-band efficient utilization of sunlight is realized, the light quality and the light quantity required by plant photosynthesis are guaranteed, and the photovoltaic power generation efficiency is improved.

The application provides a synergic dynamic lighting method and its adjustable light direct current incandescent lamp, relates to the field of vision and lighting, and aims to ensure that light is uniform and dynamic in the field of vision; the color temperature is strictly imitated candlelight; the core is direct current adjustable light incandescent lamp technology; and the light in the field of vision is mostly non-uniform and static in the present night desktop lighting, and the light quality is never as good as direct current incandescent lamp; this easily leads to eye accommodation laxity and induces axial myopia; the application mainly comprises two direct current incandescent lamp platforms, one of which illuminates a book, and the other of which illuminates a white wall in front of the eyes; the light intensity of each is adjustable to ensure the uniformity of light in the field of vision, so that the fovea and peripheral rod cells of the retina are stimulated at the same time; the two lamps can also realize the synchronous adjustment of illumination according to the program, thereby guiding the dynamic focusing of the eyes and realizing dynamic lighting; the dynamic also reflects the low color temperature mammal lighting imitating candlelight according to the biological clock and the anti-alzheimer's lighting with 40Hz deep frequency flash.

The invention relates to the technical field of agricultural lighting, in particular to a rubber forest multiband bionic light supplementing system. The device is composed of a light source module, an environment sensing module, an intelligent control module and an adjustable supporting structure. The light source module is composed of at least three LED units with different wave bands, and the light intensity proportion of each wave band can be independently adjusted. The environment sensing module collects light environment parameters and meteorological data of a rubber forest canopy in real time. The intelligent control module dynamically adjusts the light intensity proportion of each wave band based on a light response curve of photosynthesis of the rubber tree and feedback data of the environment sensing module; the adjustable supporting structure adopts a modular truss design. The invention provides a multi-band bionic light supplementing system capable of simulating the dynamic characteristics of natural light and self-adapting to the physiological needs of rubber trees, and accurate matching of light quality, light intensity and light period is realized through intelligent sensing and dynamic regulation, so that the photosynthetic efficiency, the latex yield and the energy sustainability are improved.

The present application belongs to the field of agriculture and forestry planting, and particularly relates to a method for laser regulation and control of plant growth trend. The method comprises the following steps: 1) forming a uniform laser light field by arranging laser light sources in a certain array distribution; and 2) adjusting the light quality and intensity of the laser light field according to the influencing factors of the microclimate environment of the planting site; the influencing factors of the microclimate environment include environmental temperature, relative humidity and environmental light intensity. The present application realizes the combination of water, light and heat by coordinating the characteristics of planting under photovoltaics, and can realize the growth regulation and control of plants planted in the shed or under the board by combining the low-energy-consumption laser with the microenvironment characteristics in the shed or under the board, thereby effectively improving the planting effect.

The invention relates to the field of agricultural lighting equipment, and discloses a plant light quality regulation and control integrated LED light source with a uniform spectral space and a method of the plant light quality regulation and control integrated LED light source. The multispectral LED chip group is arranged on the lamp bead substrate in a die bonding manner; the plurality of groups of independent bonding pads are arranged on the lamp bead substrate and are electrically isolated from one another; and the transparent optical lens adhesive layer covers the chip group. And different spectrum chip groups in the multi-spectrum LED chip group are electrically connected with the corresponding independent bonding pads respectively. Driving current is provided for the multiple groups of independent bonding pads through an external driving circuit, and the luminous intensity of different spectral components is independently adjusted by independently adjusting the magnitude of the current input to different bonding pad groups, so that the output composite spectrum is changed. According to the invention, the multispectral chip is integrated in a single packaging body, the problem of non-uniform spectral space is solved from the physical source, the accurate regulation and control of the spectral ratio are realized through multichannel independent control, and the design and manufacturing cost of the lamp is reduced at the same time.

The invention discloses a method for quickly breeding soybeans in a greenhouse, which comprises the following steps of: planting soybean seeds in a pot picking method in the greenhouse, sowing the soybean seeds in planting pots, and planting 4-8 soybean seeds in each pot, and the conditions of the greenhouse are as follows: (1) photoperiod treatment; (2) light quality treatment: putting the seeds into a blue-light LED lamp room after sowing, increasing the proportion of the blue-light wave band of 460-490 nm by 15% under a full-spectrum condition, and transferring the plants into the full-spectrum LED lamp room when the plants grow to a four-leaf stage until the plants are mature; (3) temperature treatment; (4) humidity treatment; (5) CO2 concentration treatment; (6) supplementing water; and (7) post-processing. According to the method, the breeding cycle of four generations of soybeans in one year can be realized by regulating and controlling the aspects of photoperiod, light quality, CO2, temperature, humidity, moisture, post-treatment and the like, and the average single plant breeding quantity is between 30 and 70, so that the breeding cycle can be shortened, and the breeding yield can be increased.

The invention relates to the technical field of semiconductor display, in particular to a vehicle-mounted high-color-gamut QD-LED backlight display module which further comprises a high-color-gamut QD-LED lamp bead which serves as a lateral light source and is arranged on at least one side edge of a light guide plate. The high-color-gamut QD-LED lamp bead comprises a circuit board and a plurality of LED lamp beads welded on the circuit board, and the LED lamp beads are patch devices packaged by composite luminescent materials of green quantum dots and KSF fluorescent powder. The circuit board and the LED lamp beads on the circuit board are integrally packaged by a silica gel packaging layer, and the silica gel packaging layer is connected with the light guide plate through a light guide protection layer, so that the high-color-gamut QD-LED lamp beads and the light guide plate are integrated. Through multi-dimensional collaborative innovation, the problems of reliability, light quality, mechanical durability and the like are comprehensively solved, a vehicle-mounted display backlight solution which is ultrahigh in color gamut, high in brightness, high in uniformity, high in reliability and long in service life is created, and high commercial value and market prospects are achieved.

The invention discloses an office lighting optical system with double light-emitting paths and a light quality control method, and relates to the technical field of lighting, the system comprises a double-channel module which provides central direct light and peripheral reflected light, and parameters of the double-channel module are independently adjustable; the in-situ acquisition module acquires brightness distribution information of a typical observation area; the dynamic execution mechanism module adjusts the light shielding angle of the lamp; the core processing and control unit executes a rhythm-comfort level fusion optimization algorithm, takes a target illumination parameter generated by a human body physiological rhythm as a guide, takes a constraint that a glare value is controlled to be lower than a preset threshold value, and collaboratively optimizes light source brightness, color temperature and shading angle parameters according to priorities; the control method comprises the steps of target parameter generation, glare value in-situ calculation, multivariable optimization decision and instruction execution and feedback learning, visual comfort is guaranteed, meanwhile, the system fits the physiological rhythm of the human body, the system has the self-optimization capacity, the light quality is stable and reliable, and the system is suitable for office lighting scenes.

The invention discloses an infrared super lens with a moth eye imitating anti-reflection nano structure. The moth-eye anti-reflection metasurface, the metasurface lens and the substrate are all made of silicon materials, and the moth-eye anti-reflection metasurface and the metasurface lens are micro-nano-scale arrays and are located on the two sides of the same substrate respectively. According to the invention, the metasurface is fully utilized to finely and efficiently modulate the phase, amplitude and other characteristics of light waves, the moth-eye metasurface changes the effective refractive index of the surface and reduces the reflectivity of incident light on the silicon surface, the metasurface lens enables the phase distribution to meet the spherical wavefront contour, efficient focusing of emergent beams is realized, and the light quality is improved. All micro-nano structures have the advantage of good thermal stability based on the same substrate material, and anti-reflection and focusing effects are achieved in an extremely thin scale.

The invention relates to the technical field of plant supplementary lighting, in particular to a photo-thermal synergistic supplementary lighting lamp for a rubber forest. The system is formed by cooperative work of a light regulation and control module, a heat regulation and control module and a control module. The light regulation and control module is used for dynamically outputting a composite light source matched with rubber tree photosynthesis spectrum requirements. The heat regulation and control module is used for generating a controllable heat radiation field according to environmental thermodynamic parameters; and the control module carries out nonlinear cooperative control on output parameters of the light regulation and control module and the heat regulation and control module based on the rubber forest microenvironment data, so that the photo-thermal coupling effect optimization is realized. According to the invention, the technical problems of poor spectrum adaptability, lack of thermal radiation regulation and insufficient multi-parameter cooperative control of existing light supplementing equipment are solved. Through collaborative innovation design of the light regulation and control module, the heat regulation and control module, the control module and the energy management module, multi-dimensional dynamic matching of light quality-heat field-environment parameters is achieved, and the photosynthetic efficiency and glue production performance of rubber trees are remarkably improved.

Disclosed in the present invention are a lamplight color temperature adjusting circuit and a lighting apparatus. The lamplight color temperature adjusting circuit comprises a main control module, a first dimming unit, a second dimming unit, and a compensation unit, wherein the first dimming unit is electrically connected to the main control module and is configured to drive a high-color-temperature light source; the second dimming unit is electrically connected to the main control module and is configured to drive a low-color-temperature light source for light mixing with the high-color-temperature light source; and the compensation unit comprises a first compensation driving module, which is electrically connected to the main control module and, on the basis of a control signal from the main control module, controls a compensation light source to perform color temperature compensation. By means of controlling the compensation unit to separately drive and adjust the compensation light source, the lamplight color temperature adjusting circuit of the present embodiment compensates for a color temperature after light from the high-color-temperature light source and light from the low-color-temperature light source are combined, so that the color temperature coordinates after light combination fall on a blackbody locus, reducing color tolerance and improving light quality.

Embodiments of the present invention disclose a display panel and a display device. The display panel includes a display area, at least part of which is a transparent display area. The transparent display area includes multiple sub-areas arranged in an array and having the same shape and area. The sub-areas include adjacent first and second sides. The first side of a sub-area is shared with a side of a sub-area adjacent in a first direction, and the second side is shared with a side of a sub-area adjacent in a second direction. The sub-areas include non-transparent areas and transparent areas. The transparent areas have the same shape. The center of the transparent area is at a distance d1 from the first side of the sub-area, and the center of the transparent area is at a distance d2 from the second side of the sub-area. At least one of d1 and d2 is different in at least two sub-areas. The technical solutions of the embodiments of the present invention can reduce diffraction in the transparent display area, improve the display quality of the transparent display area, or solve the problem of poor light quality received by the under-screen light sensor.

The present invention discloses a method for improving the quality of Millettia reticulata, belonging to the technical field of Millettia reticulata cultivation. It applies a growth regulator in combination with spectral lighting. The growth regulator is methyl jasmonate, with a concentration of 100 - 400 μmol / L. The LED light quality of the spectral lighting is red light and blue light, and the total photon flux density of red light and blue light is 200 μmol / m 2 / s, and the light quality ratio of red light to blue light is 2 - 5:1. The method of the present invention can effectively improve the growth of Millettia reticulata seedlings, significantly increase the contents of the active ingredients total flavonoids, catechins, epicatechins and gallocatechins, especially the improvement effect of catechins is the best. In an embodiment, compared with the blank group, the contents of total flavonoids, catechins, epicatechins and gallocatechins are significantly increased by 83.05%, 314.72%, 81.03% and 179.62% respectively, and the effect is remarkable.

The present application relates to the field of image processing, in particular to a missing risk monitoring system for medical waste refrigerators, comprising a video data acquisition module, a light quality evaluation module, a sensitive factor acquisition module, a gray compensation module and a risk detection module. According to the monitoring video when transferring medical waste, each gray image and template image are obtained; according to the structural richness of each gray image and the average gray value of each differential gray level, the light quality evaluation index of each gray image is obtained; according to the light quality evaluation index of each gray image and adjacent gray image, the sensitive factor of each gray image is obtained, the gray compensation is carried out on each sensitive factor, and the missing risk of each gray image after the gray compensation is completed is detected. The present application can restore the details lost in the image due to light changes, ensure the integrity of the image detail information, and improve the accuracy of missing risk identification.

The present invention discloses a method for promoting rapid tillering and heading of hydroponic rice based on red light and far-infrared light. The method comprises performing light quality treatment on hydroponic rice in a light environment to enable rapid tillering and heading of the rice. The light environment adopts a red light to far-infrared light ratio of 0.60 and a light intensity of 800 μmol·m ‑2 ·s ‑1 The present invention adopts a hydroponic method, uses LED lamps with an appropriate ratio of red light to far-red light, accurately modulates the spectral wavelength and light intensity, and combines it with the nutrient solution of the required concentration for rice seedlings at different stages to promote early heading and flowering of rice, significantly shortening the growth cycle of rice seedlings and providing new ideas for accelerated rice breeding.

The invention discloses a spectrum-regulated vegetable fresh-keeping control method and system and a refrigerator, and belongs to the technical field of refrigerators.The spectrum-regulated vegetable fresh-keeping control method comprises the steps that image information and spectrum information of leaf vegetables in a storage area are obtained; color features are extracted based on the image information, spectral feature indexes are extracted based on the spectral information, and leaf vegetable freshness indexes are calculated in combination with the color features and the spectral feature indexes; the leafy vegetable freshness index is compared with a preset threshold value, a corresponding spectrum fresh-keeping mode is selected based on a comparison result, and the spectrum fresh-keeping mode comprises a basic fresh-keeping mode adopting red light irradiation, an antioxidant enhancement mode adopting red and blue light alternate irradiation and a recovery conditioning mode adopting red and blue composite light irradiation; and controlling the multiband LED light source to irradiate the leaf vegetables in the storage area according to the light quality parameters corresponding to the selected spectrum fresh-keeping mode. Physiological metabolism of the leafy vegetables is intelligently regulated and controlled through spectrums, yellowing and wilting of the leafy vegetables are delayed, and the preservation effect is improved.

The invention relates to the technical field of illumination, and discloses an LED filament, an LED filament lamp and a control method thereof.The LED filament comprises a substrate with two electrodes, a first light mixing set and a second light mixing set are arranged on the two faces of the substrate respectively, the first light mixing set comprises two LED chips, the second light mixing set comprises two LED chips, a light excitation layer is arranged on each LED, and the first light mixing set and the second light mixing set are arranged on the substrate respectively. And the whole body is wrapped with a diffusion layer to form the filament. A plurality of lamp filaments are arranged in the LED filament lamp, conduction of a plurality of different chips is achieved through arrangement of a small number of electrodes in appearance, and light mixing and dimming are achieved by controlling the conduction duration and period of the different chips and correspondingly configuring LEDs of different colors and light excitation layers made of different conversion materials. The lamp filament basically has no dark area or chromatic aberration area which can be identified by naked eyes, the whole body of the lamp filament is mixed with light, the emergent light is uniform, and the light modulability and the light quality are improved. The filament and the lamp body are simple in structure, and the requirement of consumers for rejuvenating the retro aesthetic feeling of a traditional incandescent lamp is met.

The utility model discloses a multi-mode adjustable light-emitting diode (LED) eye protection table lamp. The utility model adopts the technical scheme that a supporting lamp holder, a supporting lamp pole and a luminous lamp cap are sequentially connected, wherein the supporting lamp holder is provided with a power interface for supplying power. A light uniformizing plate is arranged in the light-emitting lamp cap, a light-emitting source fixed on the side wall comprises large lamp beads and small lamp sets which are linearly arranged, and soft light plates are arranged on the outer sides of the large lamp beads and the small lamp sets. The light emitting sources are arranged on the side wall, a unique lamp bead combination and arrangement mode is adopted, light rays are scattered in cooperation with the soft light plate, glare is effectively reduced, and the uniformity and softness of the light rays are improved. The table lamp can achieve multi-mode adjustment, the problem that an existing eye protection table lamp is poor in light quality is solved, diversified illumination requirements are met, and eye health of a user is better protected.

The application discloses a kind of LED lamp bead inside edge light absorption type source light control high luminous efficiency illumination control method, belong to LED optical technology field, especially suitable for LED lamp bead.The traditional "pollution after treatment" technical prejudice of industry, the application is directly set in the edge of LED chip emitting surface coaxial continuous closed edge light absorption unit, only absorb chip edge stray light and do not block central main light path;Light absorption unit is closely combined with chip, interval≤0.005mm, coaxiality error≤0.05mm, light shielding rate≥95%, directly eliminate stray light interference in light source.This application overturns traditional correction idea, compared with the traditional LED lamp bead without light absorption unit of same specification, significantly improve the spot purity, light efficiency 5%-15% and center illumination 10%-40%, reduce glare, structure is simple, strong universality, adapt to various high light quality lighting lamps.

The invention relates to the technical field of fault diagnosis of a dental comprehensive treatment machine, in particular to a dental comprehensive treatment machine detection method and system, and the method comprises the steps: executing a load sequence simulating the clinical continuous operation of the dental comprehensive treatment machine; synchronously acquiring waterway system state data and light quality data of the light curing lamp; based on the waterway system state data and the light quality data of the light curing lamp, executing time sequence correlation analysis, and identifying a time sequence and a time interval between the waterway system state change and the light quality degradation of the light curing lamp; judging a degradation source of performance degradation according to the time sequence and the time interval; and outputting a diagnosis report according to the time sequence, the time interval and the degradation source, wherein the diagnosis report indicates the performance degradation condition and the fault source of the dental comprehensive treatment machine. The method has the advantages that the association between the state change of the waterway system and the light quality degradation of the photocuring lamp under the clinical continuous operation load of the dental comprehensive treatment machine is identified, so that the performance degradation source is judged.

The invention relates to the technical field of laser illumination, in particular to a laser diode agricultural illumination system and method based on a combined spectrum, and the system comprises a light source module, an illumination intensity adjustment module, an illumination time control module, a spectrum monitoring module and a feedback adjustment module. According to light quality requirements of leaf vegetables and solanaceous crops in different growth stages, a spectrum combination proportion is determined, a specific wavelength spectrum is supplemented, illumination intensity is dynamically adjusted according to a plant growth state, illumination time is set according to crop types and growth stages, the spectrum is monitored in real time, optimal parameters are compared, and a spectrum combination is adjusted according to deviation. Spectrum, light intensity and illumination time are accurately matched with crop requirements, light energy waste is reduced, it is guaranteed that crops obtain proper illumination conditions in all growth stages, photosynthesis efficiency is promoted to be improved, and efficient and accurate development of agricultural production is promoted.

The utility model discloses a floor brush capable of preventing collision damage. The floor brush comprises a floor brush body, the anti-collision plate is fixed to the front end of the floor brush body, and a first mounting groove is formed in the top of the anti-collision plate; the bottom of the lamp assembly is inserted into the first mounting groove, and a plurality of illuminating lamps are arranged on the lamp assembly at intervals; the front baffle is positioned on the anti-collision plate and at the front end of the first mounting groove, and a plurality of light transmitting openings corresponding to the illuminating lamps are formed in the front baffle at intervals; a mounting box is arranged at the front end of the top cover and hermetically spliced on the outer side of the first mounting groove, a second mounting groove is formed in the bottom of the top cover, the top and the front baffle of the lamp assembly are inserted into the second mounting groove, a mounting opening corresponding to the light transmitting opening penetrates through the front end of the mounting box, and a lampshade is assembled on the mounting opening. The floor brush can solve the problems that the installation strength and the installation stability of an illumination assembly in an existing floor brush are insufficient, the illumination assembly can be damaged if collision occurs, and the service life and the illumination quality of the illumination assembly are affected.

The invention provides a greenhouse light quality dynamic regulation and control system and method based on a photonic crystal chip. The method comprises the following steps: acquiring a parallel spectrum task sequence for an integrated layout; simulating a spectrum output process of the multi-layer photonic crystal structure according to the time sequence control protocol; if the deviation between the simulated spectrum output and the target spectrum distribution data exceeds a preset threshold value, adjusting the wave band modulation intensity of the independent subtask; whether the adjusted deviation meets the requirement or not is judged, and a final regulation and control parameter set is obtained; extracting a real-time switching rule from the final regulation and control parameter set; determining whether the light quality change triggers the real-time switching rule or not; if the light quality change triggers the real-time switching rule, obtaining a dynamic regulation and control instruction; driving the multi-layer photonic crystal structure to execute the parallel spectrum task through the dynamic regulation and control instruction; and acquiring light quality feedback data after the parallel spectrum task is executed.

The invention discloses a PVC film quality online detection system and method, and relates to the technical field of image processing. The PVC film quality online detection method comprises the following steps: acquiring surface image data of a PVC film under different illumination conditions, and extracting surface image quality features of the PVC film based on a pre-trained PVC film image recognition model; based on the surface image quality characteristics, analyzing a quality score set of the PVC film, including natural light quality score, backlight quality score and oblique light quality score; according to the method, the amplification effect of the illumination environment on the visual information is used for auxiliary discrimination of defect features, the recognition sensitivity and discrimination precision of the model on detail changes are further improved, image information corresponding to the three illumination directions is independently extracted in the model, and the recognition accuracy of the model is improved. And feature score values are respectively generated, so that a detection blind area that image information is incomplete or defects are covered is effectively avoided.

The invention relates to the field of plant illumination equipment, and particularly discloses light source equipment for promoting blueberry growth and a cultivation method. The light source device comprises a light source module, a light quality module, a modulation module and a timing module. The light source module comprises a red light LED and a blue light LED; the light quality module is used for controlling the driving electric energy values of the red light LED and the blue light LED, so that the light source module irradiates with light of a preset wave band; the modulation module is used for adjusting a driving electric energy value of the light source module to enable the light source module to irradiate at preset illumination intensity; the timing module is used for periodically turning on or turning off the light source module to enable the light source module to irradiate in a preset illumination period; when the blueberries are in the growing period, the light quality module adjusts the power ratio of the red light LEDs to the blue light LEDs to be (3-5): 1; and when the blueberries are in a flowering and fruiting period, the power ratio of the red light LEDs to the blue light LEDs is adjusted to be (5.5-8): 1 by the light quality module. By implementing the method, the growth rate of blueberry plants can be increased, and the quality of blueberry fruits is improved.

The utility model discloses a chip-on-board packaging light source, which relates to the technical field of light sources and comprises a substrate, a box dam, an adhesive coating layer, a plurality of first wafers, a plurality of second wafers, a plurality of adhesive drawing strips and a plurality of retaining walls. A plurality of first wafers are fixedly arranged in each first subarea side by side, a plurality of second wafers are fixedly arranged in each second subarea side by side, the painting adhesive tapes are in one-to-one correspondence with the first subareas, the painting adhesive tapes fixedly cover the first wafers of the first subareas, and retaining walls are fixedly arranged between any adjacent painting adhesive tape and the second subarea; the glue coating layer fixedly covers the painting glue strips, the retaining walls and the second wafers, and the box dam surrounds the glue coating layer and is fixedly arranged on the top surface of the substrate; according to the utility model, the matching in the trial matching process is more accurate, the matching release speed is improved, the yield in the mass production process is improved, the light color uniformity of a finished product is improved, and the light quality of the finished product is improved.

The invention relates to the technical field of agricultural engineering, and discloses a layered multi-light-quality cooperation-based three-dimensional circulating seedling raising system and a light supplementing method thereof.The system comprises a multi-layer circulating conveying structure, a layered light source system, a seedbed movement control system and a PLC; the multi-layer circulating conveying structure is divided into a high-illumination area, a middle-illumination area and a low-illumination area according to light saturation points and light compensation points of rice seedlings, the illumination intensity of the high-illumination area is larger than or equal to 100 PPFD, the illumination intensity of the middle-illumination area is 30-100 PPFD, and the illumination intensity of the low-illumination area is smaller than 30 PPFD; the layered light source system is provided with different light sources for the middle illumination area and the low illumination area. According to the method, the high illumination area, the middle illumination area and the low illumination area are divided, the middle-layer illumination blind area and the bottom-layer weak-light area which cannot be considered by a traditional light supplementing technology are effectively covered, the problems of excessive growth, leaf color lightening, slow growth and the like of seedlings due to continuous weak light or intermittent light shortage are solved, and the consistency and uniformity of seedling groups are guaranteed.

The utility model belongs to the technical field of light-emitting diode (LED) down lamps, particularly relates to a light-cutting type anti-dazzle LED down lamp, and aims to solve the problems that when the down lamp is installed on a lower ceiling or directly located in a sight range, dazzling light spots are easy to form, visual discomfort is caused, the dazzle effect is caused, and the dazzle is more obvious along with the increase of the brightness of the LED down lamp. According to the technical scheme, the LED down lamp comprises an LED down lamp body, an access cover is detachably installed at a notch in the top of a shell of the LED down lamp body through two cross bolts, an installation opening is formed in the center of the access cover, and a cooling fan used in cooperation with the interior of the LED down lamp body is installed in the installation opening in an embedded mode. When the LED lamp is used, a light source is deeply hidden in the deep cup lampshade for physical light interception, the frosted layer and the antireflection coating of the acrylic mask plate are combined, and the triple anti-glare design can remarkably reduce glare, provide softer and more uniform lighting effect, relieve eye fatigue and improve visual comfort. The LED lamp is especially suitable for places with high requirements for light quality.

The application discloses a method for adjusting environment to promote astaxanthin synthesis of Microcystis aeruginosa, and specifically comprises the following steps: culturing Microcystis aeruginosa, determining optimal light quality, determining optimal light intensity and determining optimal temperature and the like. Under the same light intensity and temperature, different light qualities are replaced to culture, white light is taken as a control group, and the optimal light quality for astaxanthin output is determined; under the same light quality and temperature, different light intensities are replaced to culture, and the optimal light intensity for astaxanthin output is determined; under the same light intensity and light quality, different temperatures are replaced to culture, and the optimal temperature for astaxanthin output is determined. In the application, the control variable method is adopted to determine the optimal light quality condition, the optimal light intensity and the optimal temperature for astaxanthin synthesis of Microcystis aeruginosa, so as to provide a theoretical basis for promoting astaxanthin production and resource utilization of Microcystis aeruginosa.

The utility model discloses a double -deck inflatable light -converting film heat -preserving greenhouse structure relates to heat -preserving greenhouse technical field, it includes base, and the base below fixed setting has support leg, the base top fixed setting has fixed frame, fixed setting has the arc frame on the fixed frame, and is provided with the composite film on the arc frame, the composite film is by inside and outside and is set gradually as the inner layer light -converting film, the middle air chamber layer and outer layer dustproof ageing -resistant film, be provided with the inflation port on the composite film, and the inflation port is linked together with the middle air chamber layer, the top of base is provided with the inflation mechanism, and the inflation mechanism is filled with air to the middle air chamber layer through the inflation port. This double -deck inflatable light -converting film heat -preserving greenhouse structure has realized excellent heat -insulating performance through the middle air chamber layer, and utilizes the inner layer light -converting film to optimize the light quality in the shed, to reach the purpose of energy -conserving and consumption -reducing and promoting crop yield increase and quality improvement in cooperation.