274 results about "Light pollution" patented technology

The invention discloses a method and system for generating a visual special effect video, and relates to the technical field of video generation, and the method comprises the steps: carrying out the collection and preprocessing of multi-modal data, synchronously collecting an RGB video, a depth map and environment illumination data, and generating a registered 3D point cloud; carrying out time-space domain combined motion compensation image matting, and extracting a moving object Alpha mask; by means of edge purification of self-adaptive illumination separation, illumination pollution and edge color overflow of a green screen scene are eliminated; the multi-scale transparency estimation network outputs a transparency graph; dynamic special effect synthesis and output guarantee video fluency; and the special effect video is intelligently recommended, and a self-adaptive output strategy is realized. The image matting and edge processing precision is improved, the transparency estimation and special effect synthesis effect is enhanced, intelligent recommendation and resource optimization are realized, and the defects in dynamic scene processing in the prior art are overcome.

The invention relates to the technical field of robot walking control, in particular to a walking control method and system for a photovoltaic robot, and the method comprises the steps: respectively collecting the point cloud data of two photovoltaic panels; fitting a photovoltaic panel surface equation based on the collected point cloud data of the two photovoltaic panels, and calculating to obtain a first height difference of the two photovoltaic panels according to the fitted photovoltaic panel surface equation; and acquiring a second height difference of the adjacent photovoltaic panels based on the three-dimensional coordinates of the target pixel points acquired by the depth camera, acquiring spatial attitude data of the photovoltaic panels and biaxial balance data of the cleaning robot, inputting the spatial attitude data and the biaxial balance data into a pre-constructed first machine learning model, and outputting a cleaning robot adjustment strategy. According to the walking control method of the photovoltaic robot, the laser radar point cloud data and the depth camera data are utilized at the same time, and after the two sets of data are subjected to weighted fusion, errors of a single sensor under complex illumination and light pollution conditions can be effectively compensated.

The invention relates to the field of coating materials, and discloses a passivation solution for a hot-dip galvanized workpiece as well as a preparation method and a use method.The passivation solution is prepared from organic pottery clay, titanium dioxide, ethylene-vinyl acetate copolymer emulsion, waterborne epoxy silicon resin, a silane coupling agent, a coloring agent, filler, an auxiliary and water. The problem of light pollution in areas with high illumination intensity can be effectively solved, workpieces and vegetation in natural scenic areas are organically fused to form beautiful scenery lines, and the technical problems of high cost and weak corrosion resistance of green coatings caused by the fact that green towers are achieved by coating green paint at present can be effectively solved. And the pole tower is green, attractive and good in economic benefit.

The invention provides an intelligent night lamp control method, device and equipment based on multi-mode AI and a medium, and is suitable for the technical field of digital dimming, and the method comprises the steps: carrying out the feature extraction of sensor data, and obtaining an environment feature data set, performing spatio-temporal behavior identification of each user and segmentation of an activity area on the environment feature data set to obtain a target area and a non-target area, calculating a preliminary illumination parameter set according to the environment feature data set, the target area and the non-target area, and performing light pollution simulation evaluation on the preliminary illumination parameter set according to the non-target area to obtain a light pollution index, and performing multi-target constraint optimization on the preliminary illumination parameter set according to the light pollution index to obtain an adjustment illumination parameter set, and performing signal modulation on the adjustment illumination parameter set according to the equipment data to generate a night lamp control signal. According to the method and the device, directional, low-interference and energy-saving safe illumination for the user getting up at night is realized through region segmentation based on user behavior recognition and regional preliminary dimming.

The invention relates to the technical field of intelligent control, in particular to a coke pushing process environment dust removal system air volume intelligent energy-saving regulation and control system and method, and the system comprises a process signal module, an image sensing module, a dynamic infrared module, a real-time flue gas analysis module and a dust removal air volume control module. In the invention, the air volume regulation of the dust removal equipment is not a fixed and extensive mode any more, but is converted into a four-gear variable-speed intelligent response matched with the actual smoke dust load, the dust removal equipment runs at a low-energy-consumption gear when the smoke dust generates initial stage or light pollution, and the air volume is gradually increased along with the rising of the smoke dust load, so that the dust removal efficiency is improved. When large-scale smoke dust leakage caused by equipment faults or extreme working conditions is monitored, the highest-gear full-force trapping is immediately started, the treatment effect is ensured, and the regulation and control according to needs not only improves the smoke dust trapping efficiency and effectively restrains unorganized emission, but also reduces the operation energy consumption of a dust removal system, and realizes double improvement of environmental protection benefits and economic benefits.

The invention belongs to the technical field of smoke alarm false alarm prevention, and particularly discloses a smoke alarm water vapor false alarm prevention system based on double emission and double wave bands, which comprises a signal emission module, a signal receiving analysis module, a propagation environment correction module, a light path pollution compensation module and a judgment early warning module. According to the invention, a dual-band detection technology and an intelligent environment adaptation mechanism are innovatively established, the anti-interference capability is enhanced by adopting a dual-light-source cooperative detection and environment parameter real-time calibration technology, and the influence of environmental factors on the detection performance is reduced in combination with a light pollution self-compensation mechanism; and meanwhile, accurate identification is realized by analyzing the physical characteristic difference of smoke and water vapor, and the risk of environmental misjudgment is remarkably reduced while a real fire behavior is quickly responded by establishing a dynamic grading early warning model, so that the key technical problems that smoke detection is easily interfered and water vapor is confused in a complex scene are systematically solved.

A ship-shaped buoy water spraying type bird repelling device comprises a ship body and a navigation mark, the navigation mark is arranged in the middle of the ship body, the ship-shaped buoy water spraying type bird repelling device further comprises a control box arranged on the ship body, and a water pump and an inductive switch receiver are arranged in the control box; the water inlet pipe and the water outlet pipe are connected with the water pump and penetrate through the side wall of the control box; the branch pipe is connected with the water outlet pipe and is connected with the self-rotating spray head; and the microwave inductor is in signal connection with the inductive switch receiver. The induction switch starts connection after receiving a signal of the microwave inductor, the storage battery and the water pump are communicated with electricity, the water pump starts a water pumping function, water enters the water outlet pipe through the water inlet pipe, then enters the branch pipe and finally reaches the self-rotating type spray head, and the self-rotating type spray head rotates to spray water to drive birds. Birds cannot be hurt by adopting water spraying for bird repelling, meanwhile, water spraying for bird repelling is low in noise, sound and light pollution cannot be caused to residents on the water bank, and environmental pollution cannot be caused.

The invention provides an LED outdoor light pollution suppression system and method in combination with a generative adversarial network, and relates to the field of intelligent illumination. In an outdoor LED illumination scene, a cloud teacher model and a local student model are organically combined through a cold start mechanism and real-time online guidance, so that the LED outdoor light pollution suppression efficiency is improved. And adaptive control of multi-target constraints such as illumination uniformity, energy consumption, glare index and the like in a variable environment is realized. In addition, cold start is carried out in different scenes through the model snapshot library, new snapshots are solidified when the performance is excellent, and a cumulative evolutionary mechanism is formed. Thus, when the system encounters a similar scene again, the existing excellent snapshots can be loaded immediately, the algorithm efficiency is improved, and the scheme robustness and the long-period self-adaptive capacity are enhanced.

The invention relates to the technical field of LED energy-saving lamp structures, in particular to a household LED energy-saving lamp which comprises an LED lamp set, the LED lamp set comprises an LED bulb end, a lampshade is arranged at the bottom end of the LED bulb end, a threaded power connection column is arranged at the top end of the LED bulb end, and a reflection part is movably arranged on the surface of the LED bulb end in a surrounding mode. A cleaning part is arranged on the outer side of the connecting end of the lampshade and the end of the LED bulb, the LED lamp set forms a core light-emitting part of the lamp, the end of the LED bulb provides a light source, the lampshade is used for diffusing and protecting the light source, and the threaded power connection column facilitates installation and electrical connection. According to the invention, through a reflection part formed by the adjustable movable cover plate and the reflector, the reflection angle and the condensation degree of light can be flexibly controlled, and the switching between a condensation mode and a floodlight mode is realized, so that the dissipation of the light is effectively reduced, the irradiation of a non-target area is avoided, the energy waste and the light pollution are reduced, and the service life of the light source is prolonged. And meanwhile, the illumination pertinence and the comfort degree are improved.

The disclosed technology is generally directed to a method for simulating light pollution by a satellite system including at least one satellite. In one example of the technology, the method may include receiving orientation and solar panel parameters associated with the satellite, a position of the Earth with respect to the Sun, importing a database including multiple point of interests (POIs) on the Earth, and determining a surface roughness parameter of the satellite using a Gaussian distribution model. Based on the orientation and solar panel parameters, the position of the Earth, and the surface roughness parameter: simulating the light pollution by the satellite to iteratively determine the light pollution at the POIs. The method may include storing the light pollution determined at the POIs in a buffer and dynamically rendering a user interface to display a visualization representing the light pollution by the satellite at the POIs.

The invention discloses a three-dimensional integrated environment treatment system for a highway tunnel, and relates to the field of tunnels, a high-voltage electrode is laid on a step surface, and a multi-layer staggered flow guide plate is arranged above the step surface; the multiple stages of step units are filled with negative ion mineral composite material layers. The UV-LED array is integrated above the multi-stage step unit and is used for emitting ultraviolet light with the wavelength of 254nm and / or 365nm; the multi-stage step unit is coated with the photocatalyst coating; the wall washing lamp is arranged at the side part or the bottom of the multi-stage step unit and is used for irradiating a gas-water mixture flowing through the step; the water circulation purification unit is arranged below the multi-stage step unit and used for collecting and purifying waterfall water flow, and purified water flows back to the first water outlet end to be recycled. According to the invention, light pollution, noise pollution and air pollution are treated as an integral system. And the integrity and the collaboration of the three-dimensional integrated environment treatment system are realized.

The invention relates to the technical field of intelligent lighting, in particular to an intelligent lighting control system and method based on an AI algorithm, and the method comprises the following steps: S1, marginalized environment perception: synchronously collecting an unsteady light field intensity gradient of a coverage area, a user gait feature vector and a light pollution overlapping coefficient between devices; s2, pre-judging illumination conflicts: generating a potential spectral interference topological graph of each lamp in the next control period, and marking conflict hot spot areas; s3, dynamic priority distribution: distributing a dynamic adjustment priority weight for each lighting device; s4, privacy constraint collaborative optimization: generating a lamp brightness-color temperature collaborative adjustment matrix; and S5, anti-interference execution verification: verifying the deviation degree between the actual parameter and the expected target based on the light field intensity, and triggering a conflict resolution compensation mechanism. According to the invention, the brightness and color temperature of the lamp are intelligently optimized, the illumination effect is improved, the user privacy is guaranteed, the light pollution interference is effectively reduced, and the user experience is enhanced.

The invention belongs to the technical field of visual sensors, and particularly relates to a gap measurement method which is used for describing a gap in a segmented manner, describing the whole gap based on a segmented manner, establishing a surface point cloud of the gap by using a fringe projection structured light three-dimensional measurement technology, and extracting a boundary point cloud of the gap by using a binocular fringe-free picture. Fitting the surface point cloud and the boundary point cloud to solve the problem of large noise point quantity at the boundary in the measurement process of the binocular fringe projection structured light system; and meanwhile, the reference plane and the reference line are fitted by depending on the existing point cloud data, so that the fitting error is reduced. On the basis of improving the gap measurement precision, the method can be suitable for measurement of complex gaps which are long and narrow in gap shape, have light pollution, have low-frequency micro-amplitude vibration, have external shielding and have dynamic non-uniform deformation in the length direction in the fields of aerospace, rail transit, precision manufacturing, heavy industry and the like.

The utility model provides a random laser experiment mounting rack with a sleeve structure, which comprises a rack body, a mounting table, an objective table, a clamping assembly, an adjusting assembly, a shading cylinder and an adjusting disc, the side surface of the shading cylinder is provided with an entrance port and an exit port, the adjusting disc is rotatably arranged on one side of the shading cylinder, a plurality of lenses are detachably arranged on the adjusting disc, and the lenses are fixed on the rack body. A sample is fixed to the objective table through the clamping assembly, the whole sample is covered with the shading cylinder, laser irradiates the sample from the incident port and is emitted out from the emergent port, most of light is shaded through the shading cylinder, light pollution is reduced, the position, irradiated by the laser, of the sample can be adjusted by adjusting the position of the objective table through the adjusting assembly, and experimental research is facilitated; and the different lenses are driven to be aligned with the emergent ports by rotating the adjusting disc, so that the light rays can be researched at different refraction angles, the operation is simple, and various experiment requirements can be met.

A method of adjusting lighting to reduce sky glow. The method includes the steps of detecting, by a plurality of sensors, an amount of cloud coverage in a region of the troposphere; determining, by a sky glow reduction circuitry, whether the amount of clouds is greater than, less than, or equal to a predetermined cloud coverage threshold; and adjusting, by a light output controller circuitry, a light output of a plurality of light sources to reduce sky glow if the amount of clouds is less than or equal to the predetermined cloud coverage threshold. The adjusting step is at least partially based on a predetermined policy.

The invention discloses a scene-driven multi-mode coordinated regulation system for external counterpulsation treatment. The scene-driven multi-mode coordinated regulation system comprises a central processing unit, the signal acquisition module is used for acquiring physiological signals of a patient in real time; the temperature and humidity adjusting module monitors the temperature and humidity of the environment where the patient is located in real time through a temperature and humidity sensor; the illumination intensity adjusting module adopts a mode of combining natural light and artificial illumination, and uses a soft light source to reduce light pollution; the air quality adjusting module is used for reducing the concentration of pathogens in air through a fresh air system, exhaust equipment and an air purification device; the sound adjusting module is provided with an audio player; the signal processing module is used for processing data of the signal acquisition module and other modules; the system has the advantages that timely and accurate response is made to environmental changes, and environmental parameters are automatically adjusted according to monitored physiological signals of a patient, so that the optimal comfort level is achieved.

The application discloses an intelligent lighting device and relates to the technical field of intelligent lamps.The device comprises a lampshade, the lampshade comprises an outer cover and an inner cover, a gap is arranged between the outer cover and the inner cover, the outer cover and the inner cover are coaxially arranged and are connected through a plurality of light isolation sheets, the light isolation sheets are equidistantly distributed around the axis of the outer cover and the inner cover, and the light isolation sheets are connected through a surrounding sheet between the axis of the outer cover and the inner cover.The application forms a plurality of independent light source cavities through the outer cover and the annular inner cover nested structure, the light isolation sheets and the surrounding sheet, and the physical separation design effectively solves the pain point of the light efficiency dispersion of the traditional lamps, each cavity is equipped with an independent bulb and supports independent disassembly, not only realizes the physical isolation of the light source to reduce light pollution, but also reduces the maintenance cost through the clamping seat type fixing structure, when local illumination is needed, the specific cavity can be accurately lighted, compared with the overall illumination mode of the traditional lamps, the energy consumption can be obviously reduced.

The atmosphere lamp comprises a cover body and a lamp strip, the lamp strip is arranged in the cover body, the cover body comprises a light-transmitting area and a non-light-transmitting area, the light-transmitting area is located on a light emitting path of the lamp strip, a light blocking piece is further arranged in the cover body, and at least part of the light blocking piece is located on a straight connecting line of the lamp strip and the light-transmitting area. According to the LED lamp, the lamp strip is arranged in the cover body, the lamp strip is prevented from being exposed, and the short circuit problem is solved; the light-transmitting area is located on the light-emitting path of the lamp strip, light generated by the lamp strip can be emitted out from the light-transmitting area, the technical effects of illumination, decoration, atmosphere foiling and the like are achieved, by designing the position and the light-emitting area of the light-transmitting area, light is only emitted out from the preset area needing to be emitted out, and light pollution caused by light diffusion is avoided; by arranging the light blocking piece, light generated by the lamp strip cannot be directly emitted from the light transmitting area, the light generated by the lamp strip cannot directly irradiate eyes of consumers, lamplight is softer, the dazzling degree of the lamplight is relieved, and the user experience feeling is better.

The environment-friendly illuminating lamp comprises a lamp cap and a lamp holder, the lamp holder is in a C shape, the lamp holder comprises a base plate and two side plates, the lamp cap is fixed between the two side plates, the base plate is provided with an installation hole used for being fixed to the tower crane, a rotating shaft installation plate is fixed to the side, located at the front end of the lamp cap, of one side plate, and the rotating shaft installation plate is fixed to the other side plate. A rotating rod is rotationally connected to the rotating shaft mounting plate, one end of the rotating rod extends to the middle position below the lamp holder, a baffle supporting rod perpendicular to the rotating rod is arranged on the rotating rod, and a shielding plate capable of being attached to the lamp holder is fixedly connected to the top end of the baffle supporting rod. The lighting lamp can be partially shielded at night, light pollution is reduced, in the daytime, the rotating rod is rotated, the shielding plate is rotated to be horizontal, and the baffle supporting rod is located below the lamp holder and cannot be influenced by flying dust, so that the light pollution problem of the lighting lamp on the tower crane can be solved, the lighting lamp can be used for a long time, and short-term overhaul is not needed.

The invention relates to the technical field of data processing, in particular to a collection and association method for native codes and engraved codes in a traceability process and a scanning and endowing all-in-one machine. The collection and association method for the native codes and the engraved codes in the traceability process and the scanning and endowing all-in-one machine are used for collecting and associating the native codes and the engraved codes in the traceability process. According to the method, on the basis that the scanning and endowing all-in-one machine is provided with a height adjusting unit, a code scanning unit, a code endowing unit, a code engraving unit and a sending unit, the code scanning height can be adjusted according to the material type of the incoming material, the code scanning unit is started for code scanning only when the incoming material is detected, and an endowing code and an original code can be stored in an associated mode. Therefore, automatic code scanning and automatic code assigning of the materials are achieved, the method can adapt to various materials, energy consumption and light pollution are reduced, associated storage of the native codes and the engraved codes is achieved, and material traceability is facilitated.

The invention relates to a flat internal reflection shutter type solar concentrator with a curved distribution mirror field, which comprises a mirror field consisting of a plurality of long-strip-shaped reflector units, a reflector rotating shaft, a reflector angle adjusting mechanism, a side surface supporting plate of the mirror field and a solar receiving component. The mirror field faces the outer side of the building, and the solar energy receiving component faces the interior of the building; the reflector units are installed on the side face supporting plate through independent reflector rotating shafts, and the center points of the reflector rotating shafts are distributed on the side face supporting plate in a curve mode. The reflector angle adjusting mechanism is connected with the reflector rotating shafts and used for driving the reflector units to rotate so as to adjust the reflection angles of the reflector units in real time, and incident sunlight is converged to the solar receiving component after being reflected. Compared with the prior art, the light condensing efficiency is improved, and the optical performance is optimized; light pollution is avoided; the structure is compact.

The utility model discloses a drainage frame for stably placing a drainage bottle. The drainage frame comprises a hanging frame assembly which is of a snakelike structure. A hook is arranged at the upper end of the connecting frame, and the hook is connected with the snakelike structure in a clamped mode; the bearing frame comprises a vertical rod of which the left side is connected with the lower end of the connecting frame, an upper fixing ring connected with the vertical rod, an illuminating lamp which is arranged on the vertical rod and faces the center of the upper fixing ring, a lower fixing ring connected with the lower end of the connecting frame, and a base connected with the lower fixing ring; the pipeline frame is arranged on the connecting frame; the lighting lamp can be turned on when the negative pressure bottle is checked, light pollution can be effectively reduced and checking is convenient due to the fact that the lighting lamp faces the negative pressure bottle, and through the split type structural design of the hanging frame assembly and the connecting frame, rapid installation and replacement of the device are facilitated, and dismounting and maintenance of the drainage bottle are convenient. And the split structure is suitable for sickbeds with different thickness structures.

This invention discloses a method and system for generating visual special effects videos, relating to the field of video generation technology. The invention includes: multimodal data acquisition and preprocessing, synchronously acquiring RGB video, depth maps, and ambient lighting data to generate a registered 3D point cloud; spatiotemporal joint motion compensation keying to extract alpha masks of moving objects; adaptive illumination separation edge cleanup to eliminate light pollution and edge color bleeding in green screen scenes; a multi-scale transparency estimation network to output a transparency map; dynamic special effects synthesis and output to ensure video smoothness; and intelligent recommendation of special effects videos to implement an adaptive output strategy. This invention improves keying and edge processing accuracy, enhances transparency estimation and special effects synthesis, implements intelligent recommendation and resource optimization, and addresses the shortcomings of existing technologies in dynamic scene processing.

The utility model discloses an energy-saving street lamp lighting structure for urban streets, which comprises a lighting end, an energy supply end, a single control module and a joint control module, the energy supply end is respectively connected with the lighting end, the single control module and the joint control module, the single control module controls the full lighting duration of the lighting end, and the joint control module controls the lighting end to be turned on for a short time. The LED street lamp has the advantages that the LED street lamp has good structural strength, meets the requirement for sufficient illumination in the peak period of nighttime travel, and can be in an extinguished state when no object is used on a road section; 2, light pollution and energy waste caused by night full-time-domain illumination of urban streets are avoided, the construction is simple, and the natural environment and human settlement environment improvement effect is good; 3, the system is applied to the field of urban street lighting, the urban lighting efficiency is improved, energy conservation is facilitated, and meanwhile, the problem of urban night full-time-domain lighting is solved; and 4, a new thought is provided for energy-saving street lamp illumination construction of urban streets, and the energy-saving street lamp has better popularization and application values.

The application relates to a rolling piece head tracking method for a hot rolling and coiling production line, the hot rolling and coiling production line comprising a rolling channel for conveying a rolling piece, pinch rolls matched with the rolling channel, and detection elements arranged directly above the rolling channel, and the method comprises the following steps: acquiring a head signal of the rolling piece, starting tracking and recording first tracking data S1; acquiring a signal that the rolling piece reaches the pinch rolls, stopping tracking; acquiring a horizontal installation interval L between the detection elements and the pinch rolls, and correcting the first tracking data S1 to S1=L; the method does not need to additionally increase the detection elements, reduces the cost of rolling piece head tracking, can reduce error correction caused by error signals of the increased detection elements, and guarantees the accuracy and reliability of rolling piece head position tracking; the correction means is not referenced by light signals, and can effectively avoid the influence of interference sources such as water vapor, fog, light pollution and the like in the field environment.

The utility model discloses a fluorescent-powder-free multi-primary-color street lamp supporting dynamic illumination, which relates to the field of multi-primary-color street lamps and comprises a lamp body, a street lamp connector is arranged on one side of the lamp body, a plurality of LED lamp sources are arranged on the lamp body, an output power source and an induction assembly are further arranged on the lamp body, and the output power source is electrically connected with the street lamp connector and the LED lamp sources. The output power supply is electrically connected with the induction assembly; according to the fluorescent-powder-free multi-primary-color street lamp supporting dynamic illumination, the illumination effect can be dynamically adjusted according to different environment conditions, the illumination quality is improved, energy consumption is reduced, and light pollution is reduced.

The invention discloses a design method and system for controlling light pollution of an urban elevated road based on an oblique photography technology, and the method comprises the steps: constructing an oblique photography three-dimensional live-action model, and importing a newly-built or reconstructed urban road and bridge model on the basis of the oblique photography three-dimensional live-action model, night auxiliary lighting facilities and electronic police operation are simulated, and the influence severity degree formed by irradiation of the night auxiliary lighting facilities and the electronic police on surrounding buildings is analyzed; according to the illumination analysis result, the influence of illumination on surrounding buildings is judged, and light pollution is controlled; through oblique photography three-dimensional modeling and dynamic illumination analysis technologies, a method for quantitatively controlling light pollution of viaduct lighting facilities is innovatively provided, and the blank of light pollution control of road subsidiary facilities in current specifications is filled. Compared with a traditional empirical design, a systematic solution is formed by combining cross slope adjustment, cut-off type lamp type selection and electronic police parameter optimization, and accurate regulation and control are achieved through iterative verification.

The present invention relates to a high-precision water quality monitoring and intelligent regulation water softener control system, belonging to the technical field of intelligent water softener regulation. An image acquisition module is used to capture images of the surface of a sensor probe and upload the captured image data to a control terminal. The control terminal uses a convolutional neural network to identify and mark the biofilm area based on the received image data, calculates the percentage of the biofilm area occupied by the probe surface, and judges the pollution level as light pollution, moderate pollution, or heavy pollution based on the percentage. Targeted treatment is performed based on the judged pollution level, and ultimately the biofilm on the surface of the sensor probe is separated from the sensor. This solves the problem in the prior art of lacking the ability to perceive the degree of biofilm coverage in real time and having limited effect on removing stubborn biofilms.

The application belongs to the field of monitoring, and particularly relates to an environment evaluation method based on monitoring data, a terminal device and a storage medium, wherein the method can determine the distribution of light of each wavelength in the zoo through wavelength detection data of each light source and the position of each light source in the zoo, and can determine the activity area heat map of animals through monitoring video, and through comparison of the distribution of light of each wavelength and the intersection of the activity area, in combination with the sleep period of animals and the influence wavelength range, the influence on the sleep rhythm of animals can be accurately estimated, that is, the light pollution of the living environment of animals can be accurately evaluated through quantitative data.

To provide a lens filter capable of suppressing the occurrence of light pollution and emphasizing point light sources such as stars. [Solution] The lens filter 10 is made of colored glass 1 and has a pattern 4 with a diffusion effect on at least the front surface 2. By using this lens filter 10, it is possible to prevent light pollution that occurs during photography, suppress color casts, make the night sky look clear and contrasty, adjust the color to suit the color of the night sky, clearly express the brightness of stars, and emphasize point light sources such as stars.