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    Rear Lighting by Marelli

    From technology to aesthetics

    The exterior lighting especially the rear lamps play a decisive role in vehicle styling and provide with its sophisticated appearance an impressive brand signature.

    As a leader in rear lighting design and innovation for global markets, we pride ourselves on our ability to master all styling challenges and find technical solutions that will underline our customer's brand.

    Our know-how and expertise in all areas of rear lamp design, mean that we always find the right optical concept and technical solution to achieve the desired style.

    New technologies


    OLED technology provides extremely uniform luminance and an extended light effect achieved by a very thin light surface.

    A glass substrate and electronically independent sub-areas define the unique OLED rear lamps with sequential or fading in and out light functions.

    Module segmentation allows for a wide variety of activations and free shaping of different designs for attractive brand signatures. They can even be personalized by the end users.

    In Future OLED technology will be also used for personalization and communication.


    Folia-LED provides an excellent combination of efficiency, uniformity and consolidated common technologies.

    Attractive light uniformity and manifold styling possibilities can be developed on a limited budget. Designed as an OLED-like product, Folia-LED has become a cost-convenient opportunity to reach volume markets.

    Sophisticated electronics systems mean that animations can be created by controlling the lighting-on of each individual Folia-LED area source.


    The market requires new functionalities that are not possible without electronics:

    • Wiping turn indicator
    • Welcome functions
    • ARS (adaptive rear lighting system) and OLED
    • Car network interface for communication (LIN, CAN, CAN FD)

    Electronics makes our products smart and enable us to offer our customers more than just on-and-off lighting functions.

    Principles of basic optical technologies


    with 20 + 20 LEDs

    LEDs on a flat rigid (2D) electronic board provide the opportunity to apply deep optical elements generating a tree-dimensional appearance (3D) of the product.

    Energy consumption: 11 Watt
    Luminous flux: 40 lm
    Optical efficiency: 12–18 %

    Mirror Effect

    with 6 + 6 LEDs

    Retro-reflective inner lenses behind a semi-transparent outer lens create a mirror effect reflecting several times the appearance of a light emitting element.

    Energy consumption: 6 Watt
    Luminous flux: 36 lm
    Optical efficiency: 3–7 %

    Slit Design

    with 17 + 18 LEDs

    Light sources sitting behind a partially transparent inner optics create a very slim slity appearance. Those zones are relatively free for design application.

    Energy consumption: 13 Watt
    Luminous flux: 105 lm
    Optical efficiency: 7–13 %

    Film Technology

    with 2x33 + 3 LEDs

    Thick 3-dimensional transparent plastic parts with thin film surface provide the opportunity for creating homogeneous thick elements within taillamps.

    Energy consumption: 5 Watt
    Luminous flux: 138 lm
    Optical efficiency: 3–7 %

    Light Curtain

    with 3 LEDs

    LEDs are feeding into the outer contour of a lightguide. Flat zones with free graphical design opportunities provide a semi-transparent impression: „light curtain“.

    Energy consumption: 2.5 Watt
    Luminous flux: 36 lm
    Optical efficiency: 5–11 %

    Light Bars

    with 3 + 3 LEDs

    LED light sources fire laterally into a three-dimensional light guide with surface optics creating the design appearance of a thick light bar.

    Energy consumption: 3 Watt
    Luminous flux: 36 lm
    Optical efficiency: 3–7 %

    Light Tubes

    with 2 + 2 LEDs

    Longitudinal light guides with axial circular shape. Intersections on rear side of the tube ensure outcoupling toward the observing eye on the outside.

    Energy consumption: 2.5 Watt
    Luminous flux: 24 lm
    Optical efficiency: 12–18 %

    Shell Reflectors

    with 12 LEDs

    LED light source emit their beam towards a shell-like shaped reflector with defined optical surfaces. Those shell reflectors generate the light distribution.

    Energy consumption: 9 Watt
    Luminous flux: 144 lm
    Optical efficiency: 20–30 %

    Dot Design

    with 18 + 12 LEDs

    The LEDs are sitting axial within small tulip-shaped reflector units generating a spotty appearance towards the observer.

    Energy consumption: 8 Watt
    Luminous flux: 30 lm
    Optical efficiency: 20–30 %

    Prismated Optic

    with 9 + 9 LEDs

    Lenses with prismatic surface sitting between the light source, the primary optical element and the observing eye are creating a crystal appearance of the function.

    Energy consumption: 14 Watt
    Luminous flux: 216 lm
    Optical efficiency: 20–30 %