Homogenous Light Distribution in Automotive Lighting Systems

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.

Source

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.

Source

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.

Source

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.

Source

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.

Source

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.

Source

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.

Source

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.

Source

Indirect vision device for vehicles like rear-view mirrors that integrate lighting devices for indicators or decorative lights with improved homogeneous luminance. The lighting is achieved using a light guide with embedded scattering particles. Light emitted from the source is guided along the light guide and scattered out through its side surface. The scattering particles cause the light to exit uniformly along the guide rather than just at the ends. The light guide is positioned above a reflective back housing so the scattered light reflects back and further enhances luminance.

Source

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.

Source

A v-shaped lighting device for vehicles that provides homogenous lateral lighting without hotspots. The device has a v-shaped lens angled towards the main reflection direction of the reflectors. This allows light to be scattered laterally by a diffuser separator wall between the reflectors. The diffuser encloses an acute angle with the lens surface for homogenous lateral radiation. The v-shape and diffuser geometry enable uniform light distribution to the main reflection in transverse directions.

Source

A vehicle lamp system that improves uniformity of light output by using a light-reflective element instead of a lens. The lamp has at least one light source facing the reflective element. The reflective element diffusely reflects the light in all directions without focusing like a lens. This spreads the light beams more evenly without dark spots. It provides wider-angle uniformity without needing a separate lens.

Source

Vehicle lamp system with improved uniformity of light illumination. It uses a light reflective element opposite the light source to diffusely reflect the emitted light, instead of using a lens. This reflects light in multiple directions, enhancing uniformity across wider viewing angles without the need for a lens. The diffuse reflector enables even illumination without hotspots or dark areas compared to lamps with just LEDs and a lens.

Source

Vehicle lamp system with improved light uniformity by using a reflective element opposite the light source to diffusely reflect the light instead of using a lens. This avoids dark areas between LEDs and provides uniform illumination in all directions without a lens. The reflective element can be anisotropic material with wires or a mirror with diffuse points.

Source

Reducing speckle in laser-based vehicle lighting to improve visibility and reduce distracting patterns. The technique involves using a diffusion element, like an elastic membrane or light guide, to scatter the laser light and reduce speckle. Multiple lasers are used to further reduce speckle by superposing their light patterns. The diffusion element can move or be designed to change speckle patterns. This improves the uniformity and perception of the light distribution.

Source

LED lighting systems with uniform color and intensity across multiple directions using flexible substrates. The system has groups of LEDs on the substrate emitting in different directions. The LEDs in each group have slightly different color characteristics. When the substrate is shaped, the groups are positioned such that their emissions don't overlap. This allows simultaneous observation of LEDs with different color hues from different directions, creating uniform color across the lighting system even with multiple emission surfaces.

Source

An improved appearance for vehicle lighting and signaling devices by adding a secondary surface light source to complement the main light source. The secondary light source provides a distinctive appearance when the device is activated, improving visual diversity compared to just the main light source. The secondary light source can be a surface light emitting diode (SLED) that provides a homogeneous lit effect to make the device look more uniform when on. The primary light source still provides the functional illumination. By having both sources activate simultaneously, it provides a consistent lit appearance from all angles.

Source

Lighting and signaling device for vehicles that improves appearance and provides a consistent look when the lights are on or off. The device uses a main light source for the primary function and an auxiliary surface light source. The main source provides most of the illumination, but the surface light source enhances aesthetics. It allows the device to have a more uniform appearance when lit since the surface light source can be seen when the main light is on. This provides a more consistent look compared to devices where only the main light is visible when on. The surface light source can be integrated into the device housing to improve appearance.

Source

A headlight for a vehicle using LED packages as the light source to improve brightness and beam pattern compared to conventional bulbs. The LED packages have tightly packed chips covered by phosphor layers to emit continuous light without gaps. A reflector reflects the light and a lens diffuses it. This allows rectangular beams without discontinuities. The LED packages are sealed in a resin with phosphor for continuous light emission between closely spaced chips.

Source