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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