LED Pattern Enhancement for Light Distribution

Light source device for exposure equipment like lithography machines used in semiconductor and display manufacturing. The device has an LED array with multiple chips and a control unit that adjusts the output of some chips to change the combined light intensity distribution. This allows optimizing the light distribution in the pupil plane for better imaging performance compared to uniform LED arrays. The control unit can compensate for non-uniformities in the LED array's intensity distribution to create a more uniform and symmetric pupil light intensity.

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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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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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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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Homogenizing the output of LED luminaires with multi-emitter arrays to eliminate color banding and streaking. The technique involves using a partial diffuser in the LED array itself. The diffuser scatters light from some LEDs while leaving light from others undiffused. This mixes the colors internally to create a more homogeneous output. The undiffused light from the second subset of LEDs is then combined with the diffused light from the first subset to produce the overall luminaire output. An optical device can further modify the beam.

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Lighting system that adaptively adjusts lighting parameters to provide optimal lighting conditions without visual fatigue or damage to the lighting modules. The system has multiple LED modules, an optical parameter collector, and a processing module. The modules feed back their operating status, the collector gets surface optical parameters, and the processor adjusts module output based on feedback and parameters to optimize lighting. This adaptive adjustment considers factors like module health, surface conditions, and installation height to avoid issues like visual fatigue and damage from changes in lighting distance.

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Adjustable light distribution for LED lighting fixtures using optical patterns on the fixture cover. The cover has an optical pattern that transmits and reflects light from the LEDs to change the distribution. The pattern can condense, diffuse, or deflect the light based on dot or line shapes. It divides the LED area into center and side portions with widening, narrowing, or protruding patterns. This allows customizing the brightness and spread of the emitted light.

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Angularly varying light emitting device (AVLED) with independently adjustable light flux and spectral output in multiple angular bins. It optimizes illumination/irradiation by directing light where needed instead of wasting it in unused zones. The AVLED has sensors, cameras, or scanners to detect the environment, then adjusts light output in specific angular bins. This can follow individuals, provide predictive lighting, avoid glare, or adapt for variable needs. The AVLED may also have movable axially redirecting optical elements to change the light output directions.

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A lighting device for tunnels that provides adjustable light distribution without using expensive lens elements. The device has an LED substrate with multiple LEDs covered by a diffusion cover with multiple emission surfaces. Some LEDs are reflected towards specific emission surfaces using internal reflectors. This concentrates light from some LEDs onto certain surfaces while others emit directly. This creates a mix of light beams with different intensities from different surfaces, allowing customized light distribution without lenses.

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An adaptive precise LED lighting system that dynamically adjusts mixed light color and quality in response to changes in the LED sources over time. The system uses sensors to monitor the actual optical parameters of the LEDs, like color temperature and CRI, and feeds that back into the control system. This allows it to compensate for drift and aging of the LEDs and maintain accurate color mixing. The method involves collecting the initial optical parameters of each LED, then adjusting the drive currents and duty cycles to match a target color. The system continuously monitors the LED parameters and makes real-time adjustments to maintain the desired color.

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A lighting system with multiple light modules and controllers that adjust the brightness of each module's LEDs to balance illuminance when multiple modules overlap on a surface. This prevents hotspots and dark areas when multiple modules are close together. The controllers adjust the brightness of each LED in the modules so that the combined light output per unit area of overlapping areas is within a certain range of the non-overlapping areas. This ensures consistent illumination across surfaces when multiple modules are close together.

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Variable light distribution luminaire for stationary installation that allows customizable lighting for different applications without needing multiple luminaire models. The luminaire has a configurable optics system that can change the light distribution pattern by adjusting the position, orientation, and coverage of the optics relative to the light source. This allows fine-tuning of the light output to match specific spatial requirements. The optics can have features like moveable sections, changeable transparency, GRIN lenses, and multiple zones with different refractive indices. The luminaire also has a control system to manage the optics configurations. By varying the optics instead of using multiple luminaires, the luminaire can adapt to different lighting needs while still being a single universal product.

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Smart lighting system with multi-source coordination and automatic parameter optimization. The system has multiple LED lights emitting beams of different frequencies. A receiver captures some of the beams. A calculation module extracts optical parameters like intensity, color temp, CRI from the received beams. A control module adjusts the LED parameters based on the calculated values. This allows simultaneous measurement and optimization of multiple lights in a space. It eliminates the need to remember individual LED codes and provides consistent lighting environments.

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Low profile LED lighting module with reduced cross-section and improved light uniformity. The module uses primary optics to customize light output from multiple LEDs and a reflective back surface to redirect and blend the light. A secondary diffuser scatters the light for uniform emission. The module has a minimized height-to-width ratio and reduced LED density to balance efficiency and uniformity.

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LED lighting device with automatic light uniformity adjustment based on environment. The lighting device has an LED light source, a light guide, and three parts - a light guide part, a data part, and a control part. The control part adjusts the light emission uniformity in response to environmental factors detected by the data part. This allows the lighting device to adapt the light distribution to optimize performance in varying environments.

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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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Spatial dimming of LED arrays to improve dimming resolution beyond the intrinsic limitations of individual LEDs. The technique involves varying the spatial pattern of lit LEDs rather than just dimming each LED individually. This allows finer overall dimming levels by combining lower intensity LEDs to create an average brighter appearance. The spatial dimming function is adapted based on factors like the LED strip length, installation orientation, or lamp position to optimize the LED subset activation for a homogeneous light effect.

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A light emitting module with groups of differently colored LEDs arranged in a specific pattern on a circuit board to improve color rendition, color control, and heat distribution. Groups of red LEDs are positioned on the outer circumference, followed by groups of green LEDs, and then groups of blue LEDs in the center. The red LEDs are connected in series, followed by the green and blue LEDs. The number of each type of LED increases as the wavelength decreases. The circuit board has wider traces for the red LED connections.

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Method for adjusting the light output of a vehicle headlight to compensate for variations in LED brightness during manufacturing. The method involves shifting the circuit board with the LEDs relative to the headlight optical assembly. This allows fine-tuning the amount of light coupled into the optical device by adjusting the LED-optic alignment. By adjusting the LED-optic gap, the headlight can emit a consistent light pattern despite LED brightness variations.

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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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Illuminating device with programmable light performance to create dynamic optical effects. The device has multiple light sources that can be individually controlled in intensity and on/off state. By choreographing the light source activation and intensity over time, it allows generating customized lighting effects and animations. The average brightness of the entire diffusion panel can be manipulated to create smooth optical flow without flickering. This enables programmable light shows and displays.

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Raceway-type LED lighting device that allows adjustment and variation of light distribution, illumination levels, and spotlight projection to optimize lighting in different environments. The device has a base frame, a light-transmitting cover, and a light distribution control unit inside the cover. This unit is shaped like an arc and has reflective protrusions. Most light is transmitted through the non-arc areas. By adjusting protrusion widths and spacing, the light distribution, illumination levels, and spotlighting can be customized. This allows tailoring the lighting to suit different applications.

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LED lamp with internal optics to provide specific light distribution similar to fluorescent tubes. The lamp has an elongated diffuser to spread the light emitted by the LED. An optical device inside the diffuser shapes the light distribution. This allows the lamp to have a directional light output like fluorescent tubes, rather than the typical directional LED light. The internal optics extend the length of the diffuser to maintain overall lamp length. This provides a replacement for fluorescent tubes with similar light distribution characteristics.

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An LED lamp with adjustable light distribution without using lenses to lower cost and improve efficiency. The lamp has a cover over multiple LEDs and a control unit to independently adjust the brightness of each LED. By varying the output of each LED, the overall light distribution can be customized without the need for optics. This allows controlling the illumination pattern without the cost and light loss of lenses.

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LED tunnel lighting dimming system that mitigates issues like black holes and white holes in tunnel lighting. The system uses optical sensors and LED position information to analyze the desired tunnel lighting conditions. It then adjusts the drive currents of the R, G, and B LED modules to synthesize the desired tunnel light. This allows optimizing the tunnel lighting for driver vision and preventing issues like black holes at tunnel entrances or white holes at exits.

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A lighting system that can generate customized light with adjustable color, intensity, and spatial distribution for applications like dynamic entertainment lighting and general illumination. The system uses an array of individually controllable LED lamps connected to a computer. The computer selectively activates the lamps to combine their light output into desired optical characteristics. This allows generating non-uniform light with varying colors, intensities, and spatial patterns by selectively controlling each lamp's emission. The computer can also reproduce lighting scenes by assigning specific colors to each lamp. The system enables versatile lighting capabilities beyond static white or colored lights.

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A standardized LED lighting module with a compact shape and elliptical beam pattern that can be easily mounted in various fixture types to provide customizable lighting. The module uses a controlled LED light source with a specific pattern. The module is designed to be used with standardized fixtures that have specific optics to further shape the beam. This allows customization of the overall light distribution by combining the module and fixture without needing custom fixture shapes.

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LED lighting fixture that allows adjustment of light output from different directions without additional electronics or extra LEDs. The fixture has multiple LED substrates mounted inside and a frame with fins for heat dissipation. The frame has covers above and below the LEDs. The top cover has a reflection plate with varying height and angle on each side. This plate controls the amount of light emitted in the corresponding direction through the cover. By adjusting the plate shape, the fixture can change the ratio of light output from different directions without needing individual LED control.

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Reducing glare from LED lighting without using diffusers. The lighting device has multiple LED sources with independent brightness control. It uses external information to adjust the brightness distribution across the LED array. This is done by changing the brightness of each source to optimize uniformity while maintaining overall brightness. The device acquires external data like occupancy, ambient light, and viewing positions. This allows tailoring the light emission pattern for reduced glare without relying on diffusers.

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Spatial lighting method for indoor environments using LED modules to improve energy efficiency and adjust vertical vs horizontal illuminance. The method involves controlling the backlight condition of the LED modules in a space with multiple modules. This allows adjusting the distribution ratio of overall horizontal vs vertical illuminance at a point in the area. By optimizing vertical vs horizontal light distribution, it prevents dark vertical surfaces while maintaining adequate horizontal illumination. This reduces overall lighting levels and energy consumption.

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Intelligent lighting system that improves the color and brightness of illumination by mixing reflected and refracted light from the environment with the emitted light. The system has an LED module that generates multiple colored light beams. A diffusion medium distributes the light beams uniformly. Controlling the LED currents adjusts the beam proportions. This mixes and balances the LED light with reflected/refracted light for optimal color and brightness.

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Reducing light losses in LED lighting devices by reflecting light back into the target range using multiple reflectors. The device has a first reflector to reflect light into the front target range of the LED. A second reflector reflects light outside the front range back into the device. A third reflector then reflects that light forward again into the front range. This sequence of reflections captures and reuses light that would otherwise escape. A lens may cover the front range and the second reflector abuts the lens edge. The reflectors can be disposed around the lens to capture stray light.

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