LED Light Distribution Control

A centralized method for optimizing street lighting control to improve visibility and energy efficiency. The method involves predicting light levels at specific points using historical and real-time weather, traffic, and pedestrian data. It calculates optimal lamp dimming scenarios over a prediction horizon. A model predictive control algorithm adjusts lamp brightness based on the predicted light needs and weighted significance of each point. This dynamically adapts lighting for conditions like rain, fog, and traffic.

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Adaptive energy-saving adjustment method and system for lighting systems using high-efficiency LED lamps. The method involves dividing the lighting system into areas, using motion sensing to detect activity, dynamically adjusting light levels based on scene recognition and ambient brightness, predicting energy consumption, comparing to actual consumption, and correcting if needed. This allows intelligent, context-aware optimization of LED lighting to save energy without sacrificing functionality.

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Hybrid light source control for accurate color temperature and brightness adjustment in mixed LED lighting. It uses real-time environmental data, duty cycle modeling, and spectral analysis to adaptively control mixed LED lights. The method involves: filtering luminous flux based on target color temp, compensating for light source attenuation, calculating duty cycle from target flux, and controlling mixed lights with duty cycle and power. This closed-loop feedback adjusts luminous flux, duty cycle, and power in response to environment and light source changes. It improves mixed light source accuracy compared to fixed algorithms.

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Intelligent lighting control system for LED lamps that optimizes lighting based on environmental conditions. The system divides the LED lamp pre-lighting area into regions, analyzes lamp health, monitors environmental conditions, determines optimal lamp usage based on light level, and optimizes lamp ratios. This allows adaptive lighting that adjusts lamp count and brightness based on factors like activity, environment, and aging.

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Intelligent LED lamp control system that adjusts brightness and angle of LED lamps based on current, light, and occupancy sensing. The system has modules for detecting input current, light level, and occupancy at each lamp position. A distribution module allocates current based on input, position, and occupancy. Adjustment modules then change brightness and angle of the allocated lamps. This provides intelligent, dynamic lamp control versus fixed presets.

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Uniformly controlling the illuminance of LED lighting systems with multiple LED arrays containing LEDs with different forward voltages. The method involves individually controlling the current applied to each LED in an array based on its illuminance, then balancing the total array illuminance by adjusting the current limits. An illuminance detection unit finds the lowest illuminance LED in each array. It then sets the array current limits to make all LEDs have the same illuminance as the lowest one. This compensates for variations in forward voltage. By independently controlling the current for each LED and array, it balances illuminance across arrays with mixed LED types.

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Intelligent indoor lighting system that dynamically adjusts lighting parameters based on ambient light, scene requirements, and fault detection. The system has multiple light source modules, a reflector module, a light distribution module, and a processing module. The source modules send data on light level and status. The processing module analyzes this to determine optimal brightness and range based on ambient light. It also detects source faults and issues alarms. The reflector and distribution modules then adjust light output accordingly. This allows automated, dynamic lighting optimization and fault tolerance.

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Tunable white light LED device that provides high-quality light with adjustable color temperature and enhanced color rendering for applications like circadian lighting. It uses a combination of three LED strings (blue LEDs with phosphor coatings), each with a different color phosphor, to generate unsaturated light of different colors. These unsaturated light spectra are mixed to create a tunable white light that can be adjusted along the black body locus of correlated color temperatures. The device uses a drive circuit to adjust the relative currents to the LED strings and achieve the desired color point.

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An LED lighting system that provides efficient, glare-free illumination with adjustable color and directionality to replace fluorescent tubes. The system uses multiple LEDs mounted on a transparent support structure. Reflectors redirect light emitted in undesirable directions toward the desired illumination direction. Phosphors on the support structure homogenize the LED colors for a consistent appearance.

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An adjustable lighting fixture that maintains high light output even when angled. The fixture has an adjustment module that slides horizontally as it tilts to keep the center of the light beam pointed at the ceiling opening. This allows the module to be tilted without blocking part of the light cone. The module pivots on spring-loaded brackets that hold it in position. The brackets also act as sway bars to guide the module's motion and counterbalance its weight.

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Surface illumination device that reduces flicker, eye strain, and fatigue. The device emits light that is directed away from the user's line of sight. This is achieved by configuring the light distribution so that the maximum intensity angle of light emitted from the center of the device's light-emitting surface is within -90° to <0° in a plane perpendicular to the surface. This avoids direct perception of the light and reduces flicker perception.

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Improving the uniformity of light dispersion from horticulture grow light fixtures to deliver more uniform light across a target area and reduce hotspots. This is achieved by rearranging the positioning of the individual LEDs or light emitters so that a greater density of light emitters is used near the edges of the fixture versus the center. By projecting higher levels of light near the edges it brings more light to the periphery and reduces the difference between edge and center light levels.

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Light emitting diode (LED) array with a window that shapes and focuses the light in a way that minimizes variations in intensity across the beam angle. The LED array has a matrix of closely spaced LED chips on a substrate. A dome-shaped window covers the LEDs and controls their emitted light paths. The window has a convex lens shape with a height of 70% or less than its lower diameter. This concentrates the light within a 90-degree beam angle while reducing peaks and valleys in the light profile

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LED lighting device design that improves light output and color consistency over different angles. The design uses a lens assembly mounted over the LED, with a gap between the lens and elastomer encapsulant. This allows light to reflect off the lens surfaces instead of being absorbed by the elastomer. A reflector in the gap can further control light direction. The lens can also have features like a recess or scattering element to mix light. This reduces color variations and improves uniformity compared to traditional LED encapsulation.

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Lighting apparatus with improved luminance using LEDs and reflectors, without increasing thickness or light sources. A reflective unit with a spaced area under each LED increases reflectivity and luminance. The spaced area can be defined by an optical pattern layer to replace a light guide plate.

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Intelligent LED lighting system that optimizes lighting uniformity and brightness by adaptively adjusting LED array brightness based on ambient light levels. The system uses sensors to measure ambient illumination and customize LED brightness accordingly. It also allows flexible partitioning and layering of the LED array to enable selective brightness control in different areas. This enables matching LED brightness to surrounding lighting conditions and providing customized lighting levels in complex environments.

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Intelligent lighting controller and system for business hotel rooms that provides optimized lighting scenes for different room areas. The controller uses a centralized host to adjust LED lamp brightness based on pre-calculated lighting parameters optimized through particle swarm optimization. This ensures consistent lighting levels and avoids over/under illumination in areas like work desks and seating areas. The guest can select scenes through a control panel.

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Energy-saving control method for indoor LED lighting that allows independent brightness adjustment of multiple LED sources to optimize illuminance levels based on user needs and natural light conditions. The method involves calculating optimal brightness values for each LED using linear programming to minimize energy consumption while meeting lighting demands. The programming takes into account user input, natural light levels, and LED background illuminance estimated through sampling. Cyclic iteration reduces calculation error compared to theoretical models.

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Fine-grained, real-time adjustment of LED lighting in indoor environments to save electricity and provide customized lighting without the need for expensive illuminance sensors. The method involves calculating optimal driving currents for each LED lighting node based on its usage needs, accounting for factors like natural light and adjacent lighting. This allows independent, fine-grained adjustment of illuminance in each area rather than uniform adjustment. The calculations are done at a central control center that communicates with the lighting nodes.

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Energy-saving street lighting system using IoT devices and techniques to reduce power consumption compared to traditional street lights. The system collects real-time road data using sensors like light intensity, infrared, and radar to intelligently adjust street light brightness and LED activation based on factors like presence of people and vehicles, light levels, and time. This optimized lighting avoids over-illumination and waste when lights are on unnecessarily. The system uses IoT devices like LED street lamps with sensors, sub-control centers, and main control centers connected via wireless networks.

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LED lighting control system that optimizes lighting based on environmental conditions and user preferences. The system has a central control unit that communicates with sensors, processing, analysis, and adjustment modules. Sensors monitor factors like temperature and daylight levels. The processing module analyzes the sensor data to determine optimal LED brightness and color. The adjustment module then dynamically sets the LED output to match. This allows the lighting to adapt to changing environments and provide optimal visual conditions for users.

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Cloud-based LED lighting energy-saving system that uses cloud integration to optimize household lighting power consumption. The system has smart LED lamps, a central power distributor, cloud integration terminal, and ambient light sensors. The LED lamps have PWM dimming and color mixing capability. The power distributor regulates lamp power. The cloud integrates lamp and distributor data to optimize lighting based on ambient light levels. It adjusts lamp brightness and color mix to match ambient conditions. The cloud also provides energy savings by dynamically balancing lamp power during daylight vs darkness.

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Energy-efficient control of LED point source lamps in indoor environments by dynamically adjusting the irradiation area of the lamps based on real-time activity data. The method involves using cameras to detect active areas, then selectively opening and dimming the point sources in those areas rather than flooding the entire space with light. This reduces wasted energy when only specific zones are in use. The lamp system can also learn and store usage patterns to further optimize light distribution.

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Linear LED luminaire design with improved power efficiency, color quality, and dimming capabilities. The luminaire has an elongated channel with a printed circuit board (PCB) inside. The PCB has LED engines at regular intervals. The lower compartment of the channel is open to provide a raceway for wiring. This allows connecting multiple luminaires end-to-end with no gaps. The PCB extends almost to the ends of the channel. This prevents dark spots between luminaires. The luminaire uses drive circuits to set LED currents. The circuits have features like PWM modulation, voltage feedback, and BJT switches to optimize power usage and protect components. A central unit can reallocate power between LED series when some are unused. It also adjusts color transitions to follow the blackbody locus for natural-looking white light.

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Optimizing light source control in large areas by matching color temperature based on local illuminance and temperature measurements. The method involves using sensors to gather illuminance and temperature values for an area. A light source controller then uses these measurements to determine the optimal color temperature for the area. It adjusts the individual LED beads to emit light at that color temperature and triggers the clock module to send the adjusted PWM signal to the LED driver. This allows customized lighting tailored to the specific conditions of each area.

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LED lighting control system that optimizes efficiency and lifespan of LED luminaires. The system uses sensors to monitor light levels from the LED fixtures and surrounding area. If the fixture light output drops below a threshold, the system increases the fixture's light output to maintain the initial level. This prevents gradual lumen loss and prolongs fixture life. If all fixtures can't provide sufficient light, the system adjusts surrounding fixtures to compensate. This provides consistent lighting while extending fixture lifespan and saving energy compared to conventional LED luminaires.

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Regionalized LED lighting system that divides an environment into smaller areas and synchronously adjusts the brightness of LED lights in each area based on movement of people and vehicles. It uses wide-area IoT technology to connect the LED lights and allows coordinated brightness changes within an area when people/vehicles pass through. This provides visual comfort and saves energy by avoiding over-illumination.

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LED lighting system that intelligently adjusts brightness to save energy while maintaining proper lighting levels. The system uses sensors to detect natural light levels and spectrum near each LED lamp group. A control unit calculates the natural light brightness near each group based on the detected spectrum and distances between groups. This allows accurate determination of natural light levels without interference from other lamps. The control unit then adjusts lamp brightness based on natural light vs artificial light comparison. This prevents over-compensation for low natural light and prevents wasting energy in daylight.

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Controlling LED lights in groups to improve lifespan and efficiency by individually controlling multiple LED modules within each light based on the environment. The LED light is divided into groups and controlled collectively instead of all modules together. The groups can have different dimming and power control strategies based on the lighting importance. This allows replacing entire groups when needed instead of all modules. It also enables optimized dimming for groups with similar brightness needs versus uniform dimming.

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Method for controlling multiple LED modules in an LED light to improve efficiency and lifespan. The method involves grouping the LED modules based on factors like ambient light and installation environment. This allows individual control signals for each group instead of all modules. The grouping and dimming strategy is tailored to the specific installation environment. For example, in low light areas, grouping is alternated between unlimited equal dimming and limited equal dimming. In bright areas, grouping is alternated between unlimited differential dimming, unlimited equal dimming, and limited equal dimming.

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A method to improve LED uniformity at low currents without compromising brightness at high currents. The method involves individually adding a small low current offset to each LED to make them all have consistent low light output. This compensates for LED variability at low currents. At high currents, the small offset has negligible impact on brightness.

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An eye-safe light source that improves the light emission efficiency while regulating light distribution characteristics. The light source includes a semiconductor laser joined to a substrate with the wire perpendicular to the laser emission direction. The substrate has a curved reflection surface that faces the laser emission end to reflect the laser light. This avoids shadows and scattering bodies between the laser and reflector.

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A controlled linear LED light source for sorting machines that enhances imaging capability and sorting performance. The light source uses a modular LED illuminator with individual LED control that allows temporal, spatial, and spectral control of the light emitted. An external diffuser renders the light uniform. A computer network controls the LEDs to generate a multi-modal, multi-spectral light output with characteristics optimized for imaging and sorting.

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LED lighting control system for office buildings that optimizes energy usage by dynamically adjusting brightness and beam angles based on real-time illuminance and occupancy. The system uses sensors to measure light levels and detect people, then central controllers to adjust LED brightness and beam angles accordingly to maintain desired illumination levels while reducing overlighting. This closed-loop, real-time optimization minimizes power consumption compared to fixed lighting.

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Distributed square lighting control system that allows efficient, flexible, and scalable lighting control for large areas like plazas. The system uses distributed lighting controllers connected to LED lamps, rather than a central control unit. Each controller has a local dimming scheme, clock, and FPC dimmer for the connected lamps. A main controller processes the overall dimming scheme from a database. The distributed controllers can also have local settings. This allows flexible adjustment of lamp brightness based on local conditions and prevents over/under lighting. The distributed architecture enables scalability, fault tolerance, and simplified maintenance compared to centralized control.

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LED module with customized connection of series parallel circuits to achieve uniform thermal loading of LEDs for optimum heat dissipation and reliability. The number of LEDs in the parallel circuits is varied based on their position on the circuit board. Fewer LEDs are connected in parallel in the central region compared to the edge regions. This reduces the current and heat in the center where cooling is poorer.

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LED lighting control system with adjustable illumination uniformity and localized intensity control for scenes. The system uses scattering lenses on the LEDs and a telescoping mechanism to adjust position and power of lamp groups. This improves uniformity by dispersing light from the LEDs and allows targeted intensity adjustment in specific areas.

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Open office distributed lighting control method that automatically adjusts the brightness of LED lights in an open office based on real-time illumination needs. The method uses wireless sensors to collect daylight illuminance at ceiling and desk levels. It calculates the expected office illumination using consistency technique. The desk daylight mapping is learned using least squares. The LED lamp PffM is then adjusted in real time using feedback control to minimize energy consumption while meeting lighting requirements. This enables intelligent, automated adjustment of LED brightness in open offices based on daylight and occupant needs.

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Modular LED light fixture system with arc-shaped array to achieve high intensity illumination and full spectrum for horticulture and other applications. The system uses LED modules arranged along a curved housing that focuses their light output into a concentrated illuminated area. The modules can be adjusted to converge their light patterns. The fixture allows customization of LED colors and lenses.

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Centralized LED lighting system that optimizes lighting control based on real-time illuminance and occupancy data. The system has multiple components: illumination sensors, occupancy sensors, LED drivers, and a central control circuit. The sensors collect light level and occupancy data. The control circuit processes the signals to adjust the LED brightness based on the actual lighting needs. This allows automated dimming, switching off when sufficient daylight, and personalized lighting levels. The hardware processing improves optimization over software adjustments.

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LED lighting with high color rendering index (CRI) and adjustable color temperature. The LED array contains multiple strings, each comprising several LED chips of potentially different wavelengths, with each string controlled electronically as a separate channel. Phosphors of multiple types and emissions spectra are dispensed or applied on top of all of the individual LED chips, such that it is possible to have a different phosphor type on each individual LED chip, or on different subsets of the LED chips. The multiple channels allow for each string of LEDs and hence their output color and power to be independently switched on/off and varied in intensity, respectively. This allows the LED illuminator to provide variable or adjustable color temperature (CCT), while maintaining extremely high CRI.

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LED luminaire with improved color mixing and uniformity by dispersing the colored LED elements within the array to provide a uniform color output. This overcomes issues like visible color banding, non-homogeneous illumination and poor color mixing of regular patterns. The dispersed arrangement allows creating larger luminaires by replicating a base module of colored LEDs because replicating square base modules maintains the uniformity.

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A method for controlling LED lights to provide consistent illumination in variable lighting environments without the need for advanced setup or parameter tuning. The method involves using a microcontroller to monitor the background light level detected by the LED fixture itself. The microcontroller adjusts the LED output based on the perceived background light to balance the overall illumination. This allows the LED fixture to automatically adapt to changing ambient light conditions without external input or complex control algorithms.

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Intelligent LED lighting system that optimizes energy savings while maintaining user comfort in complex indoor environments. The system uses sensors to detect light levels and user presence in real time. It calculates optimal brightness for each LED based on area illumination and user count. This achieves a balance between energy efficiency and user comfort by adjusting LED brightness.

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Lighting system that can adapt the light output to follow user preferences and circadian rhythms. The system has multiple LED arrays and a power circuit. Control devices adjust the power distribution between arrays based on user presence and defined light profiles. The profiles specify light parameters like color temp and intensity over time. It uses signals like real-time clocks and user data to determine the output. This allows tailored, dynamic lighting to support user needs and sleep cycles.

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Time division sensing and regulation of LED brightness in lighting systems that have multiple LEDs emitting lights of different spectra. The method involves adjusting the brightness of one LED based on the received light intensity at a first time, then adjusting the brightness of the other LED based on the received light intensity at a second time. This allows compensating for variations in ambient light and LED luminance over time. Sensors detect the light levels at different times, and a controller uses that data to adjust the LED brightnesses. This ensures consistent overall light output when the LED spectra are different.

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Control method for uniformly illuminating a large area using multiple lights to overcome non-uniformity issues when using multiple lights in a space. The method involves initially adjusting the illuminance/chromaticity of a first region using the first light. Then, the second light is used to illuminate a second region with adjusted parameters. If the first region parameters drift out of range, the first light is adjusted again. This alternating control sequence ensures both regions have uniform illumination.

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Adaptive street lighting system that adjusts light distribution based on road conditions and weather to prevent glare and improve visibility. The system uses LED lamps with different basic light distributions. It receives road weather and surface condition data. It determines optimal LED light distribution combinations based on the weather and surface conditions. It then controls each LED's light distribution accordingly. This allows customized lighting that adapts to environments instead of fixed patterns.

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Intelligent LED street lighting controller that dynamically adjusts LED lighting output based on environmental parameters to optimize illumination and color temperature. The controller has a unit to acquire environmental parameters, a main control unit, and a feedback unit. It processes the environmental data and feedback to generate different output signals to the LEDs, adapting the lighting in real-time to maximize effectiveness in changing conditions.

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Method and system for optimizing light distribution in a space using integrated control of daylight and electric lights. Multiple sensors measure brightness levels from both sources. An integrated control system adjusts the intensity of installed lights and amount of external light entering the space simultaneously to minimize error between measured and target brightness while minimizing total energy consumption. This adaptive, coordinated control of daylight and electric lights provides optimal lighting conditions and energy savings compared to sequential control.

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