Anti-Glare Systems in Automotive Headlights

Vehicle lamp that reduces glare to oncoming vehicles when the host vehicle is turning. The lamp lowers the emission direction of the low beam light distribution pattern when a turning vehicle has an oncoming vehicle in front. This lowers the cutoff line of the low beam light uniformly, reducing glare to the oncoming vehicle even if some light from the host vehicle's lane also goes into the opposing lane. The lamp can physically move the optical unit vertically using a motor to achieve the directional adjustment.

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The high risk of glare from vehicle headlights at night often becomes a significant contributor to traffic accidents, particularly for motorcyclists and drivers lightweight vehicles. To address this issue, smart glare-blocking system based on PDLC (Polymer Dispersed Liquid Crystal) film has been developed. This research proposes the design, development, testing integrated with an LDR (Light-Dependent Resistor) sensor automatically detect light intensity adjust film's opacity in real-time. goal is enhance driver visibility comfort without compromising overall road safety. experimental setup involved placing prototype varying distances (09 meters) controlled source night. Measurements were conducted collect data intensity, voltage output, resistance LDR, degree attenuation achieved by film. results showed that distance 1 meter, could block up 99.85% incoming light, reducing 12080 Lux only 17 Lux. Moreover, began react 6 meters output 34V. It became fully transparent 89 50V. findings demonstrate functions effectively detecting potential its impact before it reaches driver's eyes. ... Read More

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Method to reduce glare from vehicle headlights for better driver comfort and safety. The method involves dynamically adjusting the intensity of individual LEDs in the headlamps based on detected objects in the environment. When a potential glare source is found, it dims the LEDs adjacent to the source while maintaining brightness elsewhere. This gradual transition prevents harsh transitions in brightness that can cause eye strain. The dimming range is adjustable to balance glare suppression and light output.

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Method for controlling a motor vehicle headlamp to reduce glare effects, comprising determining a glare reduction range based on an angle and a correction value, wherein the correction value is independent of the total distance between the object and the vehicle, and the glare reduction range is U-shaped with a lower edge extending horizontally and side edges extending vertically.

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A vehicle headlight system that prevents glare by dynamically adjusting the beam pattern. The system includes a primary optical structure with a light-shielding element that creates a cut-off line in the high-beam pattern. The cut-off line is positioned on the left or right side of the beam, depending on the vehicle's position. The system also includes a mechanism to move the cut-off line left or right to adjust the beam pattern and prevent glare. The system can be implemented in a single headlight or in a dual-headlight configuration, where the left and right headlamps are synchronized to create a combined beam pattern with a dark zone in the center.

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Vehicle headlight system with controllable glare reduction, comprising a light source and a segmented light guide device with liquid crystal material between transparent substrates. The device has segments that receive light from the source and can be selectively controlled to operate in either an anti-glare output state or a different output state, allowing for dynamic glare reduction in specific areas of the light pattern.

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Glare-free headlight for a motor vehicle with a plurality of light units, each comprising a light source element, projection optics, and photodetector. The photodetector detects reflected light from the light source element and assigns it to the corresponding light source element, enabling automatic switching off of the light source element to prevent glare. Each light source element has its own optical axis and projection optics, allowing for independent operation and glare prevention.

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A method for glare control of objects by a vehicle's headlight system, comprising determining the positions of two objects in a camera image that reflect light from the headlight, and controlling the headlight to reduce glare in the image sections corresponding to these objects, as well as the connecting area between them.

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A method for reducing headlight glare experienced by a vehicle driver, comprising: illuminating the environment with headlights; obtaining image data of the illuminated environment; analyzing the image data to identify reflective surfaces that may cause glare; categorizing the identified reflective surfaces into at least two categories; and adjusting the light output from the headlights in the direction of each identified reflective surface based on its category.

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An arrangement and method for producing an asymmetrical, glare-free high-beam for vehicle headlights, comprising a front camera connected to an Adaptive Driving Beam (ADB) control unit that transmits information about oncoming and preceding vehicles. The headlights are asymmetrically designed to generate an ADB illumination area only for the vehicle's own lane, while the oncoming lane is illuminated with standard low-beam and high-beam. The ADB function is selectively enabled for the own lane based on camera detection of oncoming or preceding vehicles, while the oncoming lane remains in standard low-beam and high-beam mode.

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A vehicle headlight control system that suppresses glare to oncoming vehicles by dynamically adjusting the headlight beam based on the relative speed and angle between the host vehicle and the oncoming vehicle. The system uses camera data to calculate the oncoming vehicle's movement information and derives a shielding range to block light from reaching the oncoming vehicle. The shielding range is dynamically adjusted based on the relative speed and angle to ensure optimal glare suppression while maintaining a clear field of vision for the oncoming vehicle's driver.

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A vehicular headlamp with improved light distribution and reduced glare. The headlamp features a shade with reflective portions, including a forward-extending reflection body with inclined reflective and supplemental light planes. The reflection body redirects light to enhance the main beam while minimizing glare on the opposite lane. The shade's reflective surfaces work in conjunction with the reflector to optimize light distribution and intensity.

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Anti-glare adjusting device for vehicle headlights that can adaptively adjust the anti-glare effect without human intervention. The device has a movable shading plate that blocks light when driven to partially cover the headlight opening. This creates a cut-off light pattern to prevent dazzling. The shading plate can translate between fully open and partially closed positions. It links to a rotating transmission plate driven by a motor. The shading plate movement is restricted by stops. This allows adjustable anti-glare without fully blocking light when not needed. The device can be integrated into headlights or retrofitted.

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A vehicle high-beam device that reduces glare to oncoming drivers while maintaining high-beam functionality. The device features a light source body, a parabolic or semi-oval reflective bowl, and a light-shielding plate with a matte surface facing the light source. The light-shielding plate is positioned near the focal point of the reflective bowl to redirect light away from the upper portion of the bowl, where glare is most pronounced. This design prevents direct glare to oncoming drivers and reduces the risk of visual errors and accidents caused by high-beam misuse.

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Front lighting assembly for vehicles that provides glare-free illumination without the use of reflectors. The assembly uses a lens and a light source with a support piece between them. The support has a beam configuration feature that partially obstructs the light path. This shape modification helps prevent light dispersion and maintains the beam angle, eliminating the need for adjustable reflectors. The assembly aims to provide effective, fixed anti-glare lighting for vehicles that does not require frequent realignment or maintenance.

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Vehicle headlamp system that mitigates glare by detecting and occluding reflective elements in the illuminated scene. The system uses LEDs in the headlamp to both emit light and detect reflected light sources, such as raindrops or snowflakes, through a process of alternating emission and detection. The headlamps are synchronized to ensure coordinated operation, allowing for rapid correction of the light beam to prevent glare.

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Device and system to suppress vehicle glare using partitioned blinds that can selectively block strong headlight glare without impairing visibility of weaker traffic lights. The system has a driver viewing blind with multiple partitions, one for suppressing headlight glare and another for observing traffic lights. A controller can independently control the blinds based on light conditions. This allows customized glare reduction that preserves visibility of both headlights and traffic lights.

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A lighting system for headlamps that provides glare-free high beam functionality using LEDs and sensors. The system dims or turns off LEDs based on sensor data to avoid blinding oncoming traffic. The LEDs project multiple overlapping beams with vertical light-dark boundaries. This creates a wider, graded beam that reduces glare compared to a single wide beam. The LEDs are arranged in fields and segments to achieve desired light distribution. The system adjusts LED intensity and phasing for target identification. It uses flickering to highlight obstacles. The overlapping beams with vertical boundaries provide glare-free high beam illumination.

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A projector-type vehicle lamp with enhanced visibility for pedestrians at the roadside without glare to oncoming or preceding vehicles. The lamp features a mirror member with an upward reflecting surface positioned to reflect light from the reflector towards the projection lens. The mirror's front edge is designed to extend along the meridional image surface of the projection lens, with left and right end portions displaced forward or backward to create distinct cut-off lines. This configuration enables clear visibility of pedestrians while preventing glare to other drivers.

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A system for producing a glare-free high beam in a vehicle's headlights using LED arrays and object detection. The system has a headlamp with separately controllable LEDs, an object detection device, and a positioning device to determine object locations relative to the vehicle. It divides detected objects into subgroups like oncoming vehicles vs. vehicles ahead, then sets each subgroup's glare-critical angle ranges and illuminance limits. The LEDs are dimmed as needed to avoid exceeding the limits for detected objects.

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