LED Glare Prevention for Safe Illumination

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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A light guide and a light guide structure for electronic devices that improves the matching of LED lights with the light guide to eliminate bright spots and shadows. The light guide has a reflector fixed to the LED source that covers the light inlet and directs the light into the guide. This prevents direct LED light from shining through the device surface. The light guide structure has a housing with a light transmission hole. The LED and reflector are inside the housing. The reflector's light outlet faces the transmission hole to guide the light through the hole instead of directly from the LED. This eliminates bright spots and shadows on the device surface.

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An LED downlight fixture with anti-glare features. The fixture includes a housing with an anti-glare cup that blocks direct light from the LED source and reflects it downward. This prevents the LED light from shining directly into people's eyes.

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Light guide assembly for uniformly illuminating the surface of a diffuser sheet in LED lighting applications. The assembly consists of a light guide sheet attached to one end of a diffuser sheet, with a reflective layer on the upper end of the light guide sheet. This design ensures uniform light emission from the diffuser sheet by using the light guide to direct light into the diffuser sheet and the reflective layer to bounce any missed light back into the diffuser. This prevents shadows and hotspots on the diffuser surface.

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LED downlight apparatus with an anti-glare feature that mitigates direct light emission. The apparatus comprises a rim housing, an anti-glare cup surrounding the LED light source, and a driver module. The cup helps direct light downwards while shielding the LED from direct view. The driver module powers the LED.

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A low-glare, ruggedized, shock-absorbing, diffuse, reflecting luminaire that provides enhanced lighting efficiency, effectively filters or eliminates ultra-violet light, reduces energy costs (and carbon footprint), and reduces harmful glare without being overly large for both fixed and transportable uses. The luminaire uses an internally mirrored-shaped lens to spread light evenly and project it horizontally rather than focusing. The lens material contains UV filtering additives. The semi-soft flexible lens protects components. A Fresnel-like lens can be added. Shock-absorbing mounts reduce bulb damage.

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A light-emitting device that replicates the appearance of an incandescent bulb while avoiding glare when the LED filament intensity is increased. The device has a centrally arranged translucent core containing the LED light sources, surrounded by an outer bulb containing the LED filament. The core is designed to scatter and reflect light more at the filament position to increase the intensity ratio compared to the core. This allows higher filament intensity without glare.

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LED lamp for classrooms that provides improved anti-glare and uniform lighting without dazzling. The lamp has an LED assembly with a layered structure inside a frame. The layers include an opaque plate, reflective film, light guide plate, diffusion film, and prism plate. The light guide plate has an LED source emitting light towards it. The diffusion film has a glare control layer with hollow holes. The light guide plate has a hollow layer with a reflective support mechanism to guide emitted light. This arrangement reflects and refracts light through the hollow holes in the glare control layer and prism plate to emit uniform, anti-glare light.

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An LED retrofit lamp that mimics the appearance of incandescent bulbs while avoiding glare at higher brightness levels. The lamp has a translucent central core with LED light sources inside, surrounded by LED filaments outside the core. The core is designed to scatter and reflect light more around the filaments than in the rest of the core. This creates a higher-intensity contrast between the filament light and core light. It also reduces glare when the filament brightness is increased.

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Light fixtures that provide customizable, field-reconfigurable, and glare-free lighting for indoor spaces. The fixtures have modular components that can be easily changed to customize the fixture's lighting output. Key components include removable light engines, interchangeable adapter plates, and a baffle that hides the light sources at high angles. The fixtures can be reconfigured by disassembling from below to add, remove, and/or replace components. The modularity allows easy customization and upgrades without replacing the entire fixture. The fixtures also provide glare-free lighting with a baffle that hides the light sources at high angles while providing smooth reflections.

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A lighting device for a luminaire that produces less glare when the lumen output is increased. The device has a base, LED filaments, light guides, and a transmissive envelope. The LED filaments emit light in a first spatial distribution. The light guides the couple into the light and emits a second distribution. The light guides are external to the filaments. This reduces glare as increasing filament brightness is offset by diffusing light from the guides. The device mimics incandescent bulbs with decorative LED filaments but avoids glare at high output.

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A light diffusion panel to prevent glare and increase light diffusion from LEDs without reducing efficiency. The panel has a base with metallic particles or dielectric particles impregnated into it. The particles are heated and aligned by an applied magnetic or electric field. When light from an LED shines on the panel, the particles scatter the light in multiple directions, reducing glare. The particles are heated in the direction of the LED light to further enhance scattering. The panel is placed in front of the LED to diffuse the light.

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A rugged, glare-free, energy-efficient luminaire that provides uniform, low-glare illumination for outdoor area lighting. The luminaire uses an internally mirrored, cylindrical lens with UV-filtering and shock-absorbing properties. The lens shape and internal mirrors spread the light horizontally for wide area coverage. The flexible lens protects components and allows transport without disassembly. The lens also has Fresnel-like optical structures for uniform horizontal dispersion.

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Automotive lighting and signaling device with homogenous lighting using LED backlighting and a diffusion layer. The device has a light guide with LED light sources behind it. The light guide has an opaline diffusion layer that scatters and homogenizes the light from the LEDs. The diffusion layer has a transmission factor variation. It scatters more light from areas with lower intensity and less from areas with higher intensity. This prevents hotspots and dark areas. The variation can be achieved by changing the density and size of scattering particles in the opaline.

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LED lighting system that uses optical elements to direct light rays from unlensed LEDs instead of lensed LEDs to avoid hot spots and glare while maximizing light utilization. The system uses optical elements like diffusers, reflectors, and lens arrays to shape the LED's wide dispersion angle light into a desired distribution. This provides controlled illumination without the hot spots and glare of lensed LEDs, while avoiding light leakage and waste by keeping the light inside the display case.

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Lighting device with reduced glare, wider light distribution, and improved durability compared to conventional LED lighting. The device uses a light diffusing member made of fibrous glass to diffuse light from the LEDs. This reduces glare and widens the light distribution compared to unmodified LEDs. The fibrous glass material is more resilient to heat and light aging compared to translucent covers made of organic materials like polycarbonate. This helps prevent brightness decay over time in the lighting device.

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Lighting apparatus for providing comfortable lighting for the aging population. The lighting apparatus has two light source modules. The first module has a narrow beam angle and higher color temperature to provide focused task lighting. The second module has a wider beam angle and lower color temperature to provide ambient lighting. This configuration improves visibility for aging people by reducing glare and increasing color saturation. The narrow beam task lighting helps with visual tasks and wider beam ambient lighting provides overall illumination.

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Light emitting device that looks like an incandescent bulb but avoids glare when the LED filament intensity is increased. It has an LED filament outside a central translucent core with LED light sources. The core surrounds the filament. This configuration prevents excessive glare as the filament brightness increases. The core can have reflective or backscattering properties at the filament position to increase its intensity compared to the core.

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LED lighting fixture for reducing glare in low bay applications like parking garages. The fixture uses a modular design with a primary optic to distribute light and secondary optic to focus light. A tertiary lens is added to diffuse the concentrated light and reduce glare. The tertiary lens also acts as a cover that channels airflow over the LEDs to cool them.

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LED backlight structure for displays that improves light uniformity by using zigzag scattering grooves in the light guide plate. The plate has upper and lower arcs with reflective films inside. LEDs are mounted on the sides. A close-to-scattering groove outgoing groove and a far-from-scattering groove outgoing groove are provided at the top and bottom. This additional scattering diverges the light further to reduce hotspots and improve uniformity.

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Free-form surface light guide plate for automotive taillights that provides stable and uniform lighting without glare. The plate has an LED module attached to one side wall and a light guide substrate with dispersions on its surface. The LEDs emit light into the substrate which guides it through the plate and out through the dispersions for uniform illumination. This prevents hotspots, dark areas, and glare compared to direct LED arrays.

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An LED light design that reduces cost and improves performance by using a specially designed heat sink shell and a reflecting cup around the LED. The heat sink shell has fins and ventilation openings to maximize natural convection for cooling. The reflecting cup captures and redirects light from the LED to reduce glare.

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LED soft light guide plate for preventing glare and enhancing brightness using a transparent base with a diamond-shaped bump scattering surface. The plate replaces frosted acrylic with transparent material to increase light extraction. The diamond-shaped bumps provide a matte anti-glare effect. A transparent layer between the base and bumps improves light scattering. This design allows brighter single-sided lights without glare compared to frosted acrylic.

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A light diffusion plate for LED illumination with improved frost prevention and reduced glare compared to conventional diffusion plates. The plate has two layers: an outer layer with polymer nanofibers to scatter light, and an inner layer with nanofiber cores and an electroplated thin film to prevent frost. The nanofibers in both layers scatter light for diffuse illumination, but the inner layer's nanofibers have a heating member to prevent frosting. The electroplated thin film surrounds the nanofibers and conducts heat to prevent frost formation. This inner layer with heating prevents frosting while the outer layer with nanofibers diffuses light for improved illumination without frost or glare. The nanofibers can be made of materials like dimethylformamide or polyacrylonitrile.

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Light diffuser with controlled wavelength selectivity and brightness for LED lights. The diffuser contains a thermoplastic resin and transparent particles added thereto. The key parameters are a total light transmittance of 50-85% and a wavelength selectivity in the rectilinear light ratio of 1.5-5.0. The selectivity is based on the particle size, refractive index difference from the resin, and dispersion of the particles. The diffuser reduces glare from LED lights while maintaining brightness.

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Outdoor lighting system that reduces glare, minimizes light pollution, and eliminates pixilation compared to curved lenses. The system uses a planar light diffuser between the LEDs and the reflector. The LEDs emit light directly onto the diffuser surface. Some light transmits through the diffuser while some reflects off. This reflected light is further reflected by the reflector back towards the diffuser. The diffuser scatters both the directly transmitted and reflected light. This diffuses the light to reduce glare and pixilation compared to curved lenses. The planar diffuser also prevents upward light emission like curved lenses.

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An automotive LED lighting panel with uniform light emission, wide illumination angle, no glare, and environmental protection and energy saving. The panel uses a light guide plate with a reflective film on the bottom, an LED lamp on the side, a light receiving layer on the top, and a light shielding layer adjacent to the side. This configuration provides uniform light distribution, wide angle, no glare, and prevents light leakage. An external power line on the light board connects the LED lamps.

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Side-entry anti-glare lighting backlight module for displays that provides better light utilization and reduces glare compared to existing backlight modules. The backlight module has a reflective film with light bars on both sides. A light guide plate is attached to the reflective film's upper surface. The light guide plate has a diffusion plate with anti-glare properties on its upper surface. This configuration allows light to enter from the sides of the reflective film and be guided upwards through the light guide plate to the display. The diffusion plate scatters the light for uniform illumination and reduces glare.

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Light mask optical device with grating structures to reduce glare while maintaining brightness. The device is made of transparent plastic with grating structures on the light outlet face. The structures have slanted sides and a flat top to form inverted trapezoids. This causes light to circulate within the grating before exiting. The circulating light combines with direct downward light to be concentrated at the center of the outlet face, reducing glare. The grating structures enhance incident light, reducing the need for coatings that block light and decrease brightness.

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Diffuser plate for LED lamps with improved light distribution and uniformity compared to conventional diffuser plates. The diffuser plate has a light guide plate with a diffusion layer on the front and a reflective sheet on the back. A brightness enhancement film is attached to the diffusion layer and has diffusion protrusions on both sides. The protrusions are spaced evenly laterally on the front and longitudinally on the back. This configuration provides enhanced light diffusion and uniformity by breaking up and scattering the light from the LEDs. The triangular prism-shaped protrusions on the brightness enhancement film further improve light diffusion.

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Lightweight optical diffusion plate for LED lighting and displays that provides high light diffusion and transmission with a compact size. The plate has a light guide layer with convex lenses on top, a diffusion layer on the lenses, a diffusion particle layer below, and a reflective layer underneath. The lenses, diffusion layers, and particle structure provide high diffusion while reducing the need for thick diffusers or distance between light sources. The arc-shaped lenses are evenly spaced on the guide layer.

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LED panel light with reduced cost, simplified structure, and reduced glare compared to conventional LED panel lights. The light uses a stacked configuration of LEDs, light guide plate, and diffusion plate inside a frame. The light guide plate has a Bragg reflective layer on its surface facing away from the diffusion plate. This layer, made of alternating layers of silica and titanium dioxide, provides high light reflection efficiency. The diffusion plate has bumps on its emitting surface to further scatter the light. This eliminates the need for a separate reflector plate and reduces costs. The simplified structure and low-cost materials like silica and titanium dioxide also reduce glare compared to metal reflectors.

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A low-profile, high-efficiency, glare-reduced LED light source with uniform emission. The light source has an array of closely spaced LEDs on a reflective substrate, covered by a two-layer diffuser. The lower layer is bonded to the substrate and contains scattered centers in a transparent host. The upper layer is bonded to the lower layer and has scattered centers in a different transparent host. The lower layer scatters light below the LEDs, the upper layer scatters light above the LEDs. This reduces glare and provides uniform emission from closely spaced LEDs without complex optics. The lower layer thickness is reduced by lateral variation to balance scattering vs absorption. The reflective substrate and LED reflectance further boost efficiency.

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Reducing glare from LED luminaires used in low bay applications such as parking garages. The aim is to diffuse the intense point sources of LED light to make the luminaire appear larger and more homogenous, thus reducing brightness. This is done using a tertiary optic that covers the primary optics and diffuses the light. The tertiary optic lens is designed to diffuse light coming from a high angle of incidence relative to the LED substrate.

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LED light guide plate for improving uniformity and reducing brightness differences between lit and dark areas in LED backlights. The plate has features like protrusions, positioning blocks, and a light guide pattern to balance and distribute light. The light guide pattern uses dots on the substrate to compensate for density differences and prevent hotspots. The protrusions on the side prevent light leakage. The plate is made in two separate pieces (substrate and LED sheet) to avoid excess waste. The positioning blocks help align the parts. This design improves uniformity, prevents hotspots, reduces brightness differences, and eliminates firefly effect in LED backlights.

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LED light module with a cover panel that reduces contrast and glare compared to traditional LED lighting. The cover panel is mounted over the LEDs and has apertures for each LED with an optic inside. Some light from the LEDs passes through the optic and out, but some light also passes through the cover panel before exiting. This second portion of light helps scatter and diffuse the light, reducing contrast and pixilation. The cover panel can be diffuse with textures, objects, and angles to further scatter light.

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LED lighting for sports stadiums and golf courses that provides adequate illumination while reducing glare. The LED lighting uses techniques like diffusers, reflectors, and shutters to control the light distribution. The LEDs have diffusers to soften the light and cladding to block some light. Reflectors increase the perceived light intensity. Shutters hide the LEDs from view. This reduces glare and allows lower light levels while still illuminating the area. The lighting can also have separate downward and upward lights with different colors. The diffuse lighting and hidden LEDs also improve light uniformity and cutoff.

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A diffuser for LED lights that softens and spreads the light output to avoid harsh glare and hotspots. The diffuser has a sheet that allows light to pass through and a surrounding rim that emits light directly from the LED. This transforms the light into soft, consistent illumination instead of direct, concentrated beams. The diffuser can be used in devices like lamps and projectors to improve the visual experience.

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LED lamp design to prevent eye strain and glare by forming multiple virtual images using concave and convex lens shapes on the lamp body. The lamp has a transparent main body with at least two LED emission units on the surface, some concave and some convex. This creates a composite lens effect that diffuses and mixes the light, preventing harsh glare and multiple virtual images to reduce eye strain compared to point source LEDs.

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