Uniform Light Distribution in Vehicle Headlights

Vehicle lamp design with shared projection lens for headlights that reduces dark areas between low and high beam patterns. The lamp has a divided projection lens with different focal points, a low beam light source module reflecting into the low lens area, and a high beam module directly into the lens. This creates separate beams from each lens area instead of overlapping low/high beams, eliminating dark areas between.

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Vehicle lamp design that provides required light intensity and a homogeneous appearance without increasing cost. The lamp has a primary reflector divided into facets, each with a contoured outer surface specific to that facet. This shape is determined by analyzing light performance of smaller facets within each area. The contoured surfaces optimize light distribution for each facet to meet intensity requirements and avoid hot spots. This allows a homogeneous appearance from different viewing angles.

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Improving the field of view of a vehicle's headlights by dynamically adjusting the cutoff line based on vehicle pitch angle. A sensor detects pitch angle changes during driving, and a controller shifts the cutoff line of the headlight beams up or down to compensate for the pitch. This prevents glare from upward shifting and improves visibility from downward shifting. It balances glare suppression and visibility enhancement by having different control characteristics for upward vs downward adjustments.

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Vehicle lamp design that maintains good low beam and high beam lighting performance when reducing the number of low beam sources, without spreading high beam light horizontally. The lamp has separators behind the lens with longer upper separator optical length than lower. This expands low beam patterns horizontally to prevent unevenness with fewer sources, without spreading high beam patterns.

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LED lamp with adjustable light distribution angle. The lamp has a rotating assembly and an adjusting member that allows the lens panel to move vertically relative to the LED panel. This adjusts the distance between the lens and LED panels, changing the light distribution angle. The rotating assembly drives the adjusting member to move the lens. The lamp body, LED panel, and driving power supply are fixed. A rotating ring on the base connects to the adjusting member. The lens panel has a connector that slides into the elongated hole in the adjusting member. This allows the lens to be raised or lowered while the LED panel stays fixed.

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Low-beam headlight with a micro-optical beamformer that generates a sharp light/dark distribution without using diaphragms. The beamformer has a condenser lens array with lenses adapted to the obliquely-extending light/dark edge. Compared to the corresponding projection lens, the condenser lens is decentered differently along the transverse direction perpendicular to the edge. This allows positioning of interference artifacts differently in that direction for a sharp image without excessively interfering artifacts. The lenses also have obliquely-extending boundary edges that bend differently to further avoid artifacts. The condenser lens focal lengths are adapted to compensate for offset positions. The projection lenses are also offset along the light propagation direction.

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Illuminated component for vehicles with a large illuminated surface area that is homogeneously lit from the rear. The component has an outer lens, a first layer on the rear, a second layer over the first layer, and a third layer with divided sections. Electrodes connect to the sections to complete a circuit. When powered, the second layer generates light visible from outside the vehicle. This illuminates the component internally and protects the front lens.

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With the rapid development of LED technology, application luminaires in field lighting is becoming increasingly widespread. However, how to improve light efficiency and uniformity distribution remains a significant challenge. This paper takes luminaire products Shenzhen Starsteck Co. Ltd. as research object explores methods practices for optimizing optical design. By employing advanced design software optimization algorithms, combined with practical experimental verification, this proposes systematic process optimization. Experimental results show that optimized have achieved improvements both uniformity, not only enhancing quality but also improving user experience. study provides important references guidance luminaires, theoretical significance.

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Collimator array for projection devices in automotive headlights that reduces stray light and improves light distribution without adding external dividers. The collimators in the array are made as an integral unit from a translucent material. Laser processing is used to introduce interference structures between adjacent collimators to prevent light rays injected into one collimator from crossing into the adjacent one. This prevents light spillover and improves the collimation and directionality of the projection device.

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Simplified vehicle headlamp with adjustable light distributions using collimated light sources and aligned lenses. The lighting device has two collimator lenses with coaxial optical axes that focus to a common point. This allows adjusting the light distribution by moving the collimator lenses relative to each other. In one mode, the lenses are aligned for a combined beam. In another mode, one lens is offset to create a separate low beam. This avoids complex optics and multiple collimators. A light module has both collimators and a secondary low beam for adaptive lighting.

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Luminous module for vehicles that projects a uniform light field onto the ground near the vehicle, particularly next to the doors. The module has a light source, projection optic, and an element with variable light transmission between the source and optic. This variable transmission element allows adjusting the intensity of the projected light field to maintain uniformity as the angle of projection becomes more raking.

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Diffusion plate for backlight modules with low optical path distance to provide uniform light without Mura effects. The plate has surface layers and a main layer made by extrusion. The surface layers have higher refractive index than the main layer due to particle additives and microbubbles. This improves light diffusion. Microstructures on the surface separate concave regions for quantum dots. Water-blocking layers prevent moisture ingress. This prevents quantum dot degradation. The plate can also have films on the surfaces.

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LED module for uniform light output and a device using it. The module has LED elements arranged on alternating wiring patterns with protrusions. The protrusions have LEDs on them and are aligned alternately. This allows connecting all LED cathodes to one set of wiring and all anodes to another set, avoiding parallel connections that can cause uneven intensity. The module is fixed to a metal base with anode and cathode terminals to supply power.

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Vehicle lamp design with slim exterior and optimized beam pattern. The lamp has integrated light guiding lenses that receive light from multiple sources and direct it to form the beam. The lenses are arranged in line with the sources and integrated to eliminate gaps between them. This prevents stray light from escaping between lenses and ensures the light is guided and focused properly. The integrated lens design allows slimming the exterior without sacrificing beam quality.

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Vehicle lamp design that allows slim exterior aesthetics while maintaining optimal beam patterns. The lamp has multiple integrated light guiding lenses in front of the light sources. The lenses have an incident portion for light input, an exit portion to output the light, and a transmission portion between them. The exit portion is convex forward. This shape helps control light path and prevent stray light from exiting through the sidewalls.

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A headlight assembly for vehicles that provides seamless transition between high and low beam patterns without overlapping pixels. The headlight uses multiple projector units with independent pixel sources. Each projector generates its own pattern with defined edges. The pixels from adjacent projectors are precisely aligned and controlled to create a seamless transition between patterns. This avoids overlap and blurring issues of overlapping pixels. The separate projectors allow customization of pixel shapes and sizes.

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LED lamp with improved color mixing and uniformity across the beam. The lamp has a unique arrangement of multi-color LEDs in the emitter module, a double-sided lens with different lenslet patterns on each side, and a parabolic reflector with facets. This configuration thoroughly mixes the colors from the LED chains and provides uniform color throughout the output beam. The LEDs are scattered in an array so no same-color LEDs are in the same row/column. The parabolic reflector and lenslets further randomize the light rays for color mixing. Photodetectors inside the primary optics measure all LEDs' light to compensate for aging.

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Light-emitting device with improved luminance and reduced unevenness when multiple LEDs are arranged. The device uses an array of LEDs, transparent members, and electrodes. The LEDs have a light-extracting surface. The transparent members have a lower surface facing some LEDs. A covering surrounds the LEDs. The electrodes are below. They connect to LEDs in columns and have alternating polarity. This configuration allows some LEDs to emit light through the transparent members while others are covered. The alternating polarity prevents adjacent LEDs from emitting simultaneously. This reduces unevenness compared to uncoordinated LEDs. The transparent members and covering improve overall luminance.

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A simplified vehicle headlamp design that eliminates the need for mechanical switching of cutoff shields. The headlamp uses a fixed light path processing element with a cutoff portion. The element can be a reflecting plate or light shielding plate. The cutoff is positioned at the convergence point of low beam light rays. This allows the low beam and high beam sources to be positioned symmetrically around the cutoff when viewed from the lens focal point. This creates the desired cutoff line without mechanical shield movement.

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Indirect lighting system for transportation applications like headlights, taillights, and logo displays that provides uniform, consistent light without the visible image of the light source. The system uses a coated surface to convert and emit light at a different color and angle compared to the original emitted light. This involves a light source, reflector, and coated surface. Light from the source impinges on the reflector to change direction. Then, light from the reflector impinges on the coated surface to excite it and emit a different colored, changed angle light. This indirect conversion prevents the light source image in the final output.

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Headlamps are essential for safe night driving, as they must provide sufficient brightness to illuminate the road while minimizing glare other drivers. Designing low-beam optics is more complex than general lighting due need a high-contrast cutoff line, with brightest point positioned near its edge. This challenge becomes even greater when working compact optical systems. In this paper, we propose robust design address issue effectively. We develop bicycle headlamps using cylindrical lens array (CLA) combined reflective create specialized light pattern. The CLA spreads pattern horizontally form line; however, alone does not ensure optimal performance. To overcome limitation, introduce novel principle: generated by reflector, before passing through CLA, should be inverse-triangular or trapezoidal. approach enables shift upward and closer solving key in previous designs.

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Angularly varying light emitting devices (AVLEDs) that can optimize illumination or irradiation by independently adjusting the light flux and spectral content for multiple angular bins. The AVLEDs have electronically controllable light output that varies angularly. This allows focusing light in specific directions while reducing glare and shadows. The AVLEDs can have sensors, cameras, and positioning systems to enable autonomous optimization based on environment data. The AVLEDs can also have axially redirecting optics to further customize the angular light distribution.

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Light emitting module with reduced stray light on the irradiation surface. The module has a lens over the light source, and a cover over the lens. The cover has three regions: an inner region where light from the lens enters, a middle region around the inner region with higher diffusion, and an outer region. This configuration reduces stray light by having the cover's middle region with higher diffusion surrounding the inner region where light from the lens enters, preventing light from escaping sideways.

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In addressing the design imperatives of automotive headlight miniaturization and energy conservation, this paper puts forth a methodology for vehicle lighting systems that is predicated on free surface optics an intelligent optimization algorithm. The establishment mapping relationship between light source target relevant performance standards. numerical calculation then integrated with MATLAB R2022a to obtain free-form coordinate points establish three-dimensional model. To optimize parameter design, genetic algorithm employed fine-tune max, thereby attaining optimal max strikes balance volume luminous efficiency. experimental results demonstrate by integrating incidence angle into high beam low beam, final simulation show optical efficiency 88.89%, 89.40%. This enables headlamp system achieve lamp framework proposed in study provides reference compact system.

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Motor vehicle lighting system that uses radial LEDs and segmented reflectors to create legal-compliant matrix displays with high light intensity and sharpness. The LEDs emit light radially instead of forward, avoiding bright spots. Segmented reflectors divide the reflector into sections matching each LED. Light emitted by the radial LEDs is reflected by the segments and passes through the optical pane. This avoids the pixelated appearance of matrix displays with forward-emitting LEDs.

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Light emitting module for headlamps with reduced glare and improved dark zone control in adaptive driving beam (ADB) systems. The module uses wavelength converters on top of the LED chips with angled sidewalls of 80 degrees or less. The converters have narrow spacing, 100 microns or less, and their edges have low luminance. A white wall surrounds the LEDs and converters. This configuration prevents light leakage between converters and reduces glare compared to flat converter edges. It allows precise dark zone control for ADB headlamps without excessive light emission.

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LED headlight retrofit lamp that reduces glare and improves visibility compared to conventional LED headlights. The lamp has two LEDs, one on each side, with different color temperatures. The higher temperature LED emits light towards oncoming traffic while the lower temperature LED illuminates the road. This separates glare from high temp light for oncoming drivers and better visibility from lower temp light for the driver's own use.

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Compact linear lighting arrangement with targeted beam output to prevent glare. The arrangement has an elongated lens body with recesses on one side. LED arrays are positioned in the recesses. The other side has angled surfaces. This asymmetrical shape focuses the LED light into a directed beam. The recesses and angled side prevent glare. The angled side can also have reflective sections to further shape the beam. The lighting arrangement can have multiple independent LED arrays, different light emissions, curved lens shapes, and flexible sections for transport and mounting.

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Glazing assembly for vehicles with an integrated light source that prevents scattered light in the edge region. The assembly has a pane with a light source, a light outcoupling means, and a laminated pane structure. An absorption layer made of an opaque thermoplastic material is added in the edge region to absorb any light that couples into the pane and doesn't exit. This prevents scattered light from the edge. The absorption layer overlaps the pane surfaces and covers at least part of the edge. It can also extend around the entire perimeter. The laminated pane has a central see-through area with no cover layer.

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Vehicle lamp with improved lighting distribution to reduce glare for drivers. The lamp has multiple reflectors with multiple light sources in each reflector. The light distribution pattern from all the sources through the reflectors has a shape that tapers narrower towards the outer vehicle side. One of the sources is at the reflector focal point, and the other is shifted towards the inner side. This reduces outer side light intensity compared to conventional lamps, mitigating glare from reflection objects like signs.

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Integrating scattering particles into phosphor layers of LEDs in a display or lighting application to enable uniform mixing of different light sources in the far-field. The scattering particles broaden or narrow the luminance line profiles of the LEDs so that when multiple spectrally distinct LEDs share an optic like a projection lens, they mix uniformly in the far-field without secondary optics. The scattering particles can be integrated into specific LED phosphor layers or used separately.

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Vehicle with adaptive headlight range control to improve visibility at different speeds. The vehicle has a headlight that can change its illumination pattern based on vehicle speed. At lower speeds, the headlight provides a wider illumination angle to better illuminate near objects. At higher speeds, the headlight narrows the beam to avoid glare from distant objects. This adaptive range adjustment improves visibility by matching the headlight pattern to the needs of the driving situation.

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Surface light guide for vehicle lights that provides homogeneous illumination with high efficiency. The light guide has a section to couple light from the source and a deflection section with small light decoupling elements. The elements deflect and extract the coupled light to the surface. This avoids point source artifacts and provides uniform illumination. The decoupling elements are closely spaced micro-optics that blend into an even surface. The guide section thickness reduces towards the end to match wall thickness needs.

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A vehicle headlight system with improved light distribution. The system uses a unique beam conversion element to shape the light output from the headlight source. The conversion element has a central curved region that disperses light into a diffused pattern, surrounded by a flat region that concentrates light into a focused beam. This allows the system to produce both a concentrated high beam and a wider dispersed low beam from the same headlight source. The curved and flat regions of the conversion element optimize the light distribution for different driving conditions.

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Motor vehicle headlight with improved illumination device that provides uniform lighting with reduced glare. The headlight has a dipped beam projection system with a bulb shield and a lens. The lens has an optical device with multiple freeform lenses to direct some light above the asymmetrical cutoff line of the dipped beam. This compensates for the shadowing by the shield and improves illumination of areas above the cutoff line without excessive glare.

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Automobile lighting device with multiple light emitters arranged side by side that produces an arcuate light distribution. The device uses reflectors and emitters in each luminous body to generate distinct vertical light and dark boundaries in their partial light distributions. This allows the combined light distributions from multiple bodies to form the overall arcuate pattern with clear vertical edges. The emitters and reflectors are configured when assembled to achieve this. By designing the reflectors to accurately display vertical light and dark boundaries, it enables precise edge definition in the composite arcuate light distribution.

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Vehicle lighting system that improves uniformity and flexibility of light distribution compared to single modules. The system uses arrays of identical and different type lighting modules arranged on the vehicle front face. The modules have different light distributions. By splicing and combining modules of different types, customized illumination patterns can be formed. This allows flexible control over the range and shape of the light distribution. The modules of the same type have identical distributions, which improves uniformity compared to single modules directly reaching the brightness.

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Vehicle lamp design that can easily satisfy the light distribution characteristics of a beam pattern without separately manufacturing multiple micro-incidence lenses, multiple micro-emission lenses, collimators, etc. for each beam pattern. The lamp uses a modular approach with a light source, optical path adjustment, and transmission optics in each module. The modules are arranged to form the desired beam pattern. By adjusting the collimators in the path adjustment module, the lamp can achieve the desired light distribution without needing multiple custom lenses for each beam pattern.

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Outdoor lighting device for automobiles with low glare to provide efficient lighting without causing discomfort to the eyes of surrounding users. The device has a lamp housing with a frosted glass cover over the equipment box. Inside the box, frames slide vertically on rails with LED panels fixed between them. The frames in the middle have control panels. A double-headed screw connects the frames and slides. This allows the LED panels to move vertically and rotate slightly to adjust the light distribution. The frosted glass cover reduces glare. The device can also have photovoltaic panels on the roof to charge internally.

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Vehicle lamps with a specific arrangement of first and second LEDs to achieve a desired luminance distribution pattern. The lamp has one central LED surrounded by four outer LEDs on a substrate. The luminance from these LEDs is arranged to have a central high-intensity region surrounded by progressively lower-intensity regions. This provides a balanced and uniform overall luminance distribution. The lamp achieves this using specific LED positions, sizes, and intensities.

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Vehicular light guide member that provides uniform brightness across its exit surface when used in vehicle lamps. The light guide has a main body with an entrance for light to join and an exit for light to exit. The entrance has multiple specular surfaces that reflect the incoming light towards the exit. Some of the specular surfaces are displaced closer to the exit than others. This increases the reflected light towards areas that would be darker otherwise, creating a more uniform brightness on the exit surface.

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A lighting module for vehicle lighting devices with a highly homogeneous surface light output. The module uses an LED housed in a cavity with a transparent optical filter between the LED and the light-emitting surface. The filter reflects most of the LED light back into the cavity while allowing a small portion to pass through. A spatial optical structure scatters the reflected light back toward the cavity surfaces on the filter's lower surface facing the LED. This bouncing of light between the cavity and filter enhances mixing and homogenization before exiting the module's light-emitting surface.

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Vehicle lamp module that enables a single lamp to perform multiple lighting functions like low beam and high beam while having a common light output surface that can create a uniform design when the lamp is switched on. The module includes multiple light sources with different light distributions, a light guide lens, and an optic that directs light from some sources. The light guide has a recess to separate light output. Some light passes straight through for one distribution pattern, while another light reflects to form a different pattern. This allows the lamp to have dual functions with a single lens.

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This vehicle lamp employs a lens array to improve the uniformity of the optical pattern of light projected on the road. The lens array is divided into regions, with each region having a different lens focal length. This allows for optimizing the lens design for each region based on its distance from the vehicle and projecting angle.

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Motor vehicle floodlight with adjustable low beam modules to allow precise alignment of the light distribution without needing to position multiple identical modules with high precision. Each low beam module has an adjustable reflector that can be rotated around a fixed point. The fixed point coincides with or is on the focal line of the reflector. This allows the module's light distribution to be independently adjusted without needing to precisely align multiple identical modules.

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Vehicle lamp with an adjustable rotating reflector to improve light distribution and reduce glare. The rotating reflector twists so that inner LEDs emit lower than outer LEDs to form a desired light pattern. This compensates for the non-flat reflecting surface. The LED vertical positions are adjusted to account for the distortion caused by the twisting reflector. This prevents overlapping light patterns and ensures a uniform shape. The connecting parts between blades are textured to prevent glare reflection.

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A vehicle headlamp design with multiple separated optical modules and a mixing lens to enable flexible lamp shape without compromising uniformity. The headlamp has multiple spaced optical modules emitting light. A mixing lens in front blends the separate beams into a uniform surface light source. This allows arranging the modules freely without restrictions based on lamp shape. The mixing lens compensates for inter-module spacing to provide a uniform overall light output.

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This is an illuminated device for vehicles that generate uniform light distribution over a transition between two light sources with different resolutions. The device has a first light unit with low resolution and a second light unit with higher resolution. The light sources are controlled to reduce intensity and resolution gradients in the transition region between them. The second light source can have multiple pixels per unit area compared to the first source.

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A lighting module for an automotive headlight that improves the light distribution and efficiency compared to conventional headlights with a single reflector. The module has two separate reflectors, each with its own focus point. One reflector focuses the light from one LED, and the other reflector focuses the light from a second LED. This allows the two LEDs to be separately positioned for better overall light distribution rather than compromising with symmetric placement. An optional optical element can further shape the combined light output.

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Spotlight with improved uniformity and edge sharpness by selectively diffusing the central collimated light from the collimator lens and transmitting the peripheral collimated light without diffusion. This prevents uniformity issues caused by source shape projection and color nonuniformity from source differences. It also prevents edge blurring by selective diffusion of the central light versus transmitting the peripheral light without diffusion. The selective diffusion is done using a diffusion lens with inner and outer sections that diffuse the central light and transmit the peripheral light, respectively.

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