VS - Lighting Systems - Lighting - 998542

Matrix beam

Pixel lighting

Matrix module

Pixel lighting

Despite their high efficiency all the systems described above still present some functional shortcomings. First of all, there is only one obscured patterns area. In the event that two or more vehicles are detected, it will encompass the entire group, eliminating visibility between the vehicles. Secondly, the quantity of light projected above the cut-off, on either side of the obscured area, is no longer the sum of the right and left beams, as in conventional high beam, since the beam on the opposite side is obscured. The Matrix Beam system dating back to Audi allocates a specific LED chip to every sector of the field for lighting or obscuring. The obscured area is obtained by extinguishing one or more LED chips, for each of the headlamps, without any moving part. This solution maintains maximum light output throughout the non-obscured area and can obscure several different areas on the condition that the space between two consecutive obscured areas exceeds the size of the elementary area.

Each of the lighted areas described in a Matrix Beam light can be considered as a macro pixel, produced by the combination of an elementary LED and a dedicated optic. The number of these macro pixels is therefore limited by the volume of the headlamp. To improve resolution, the activation and extinction of the pixel must be dissociated from the activation and extinction of a LED element, like a video projector whose light source remains lit regardless of whether the pixels of the projected image appear or not. A solution being considered by Valeo is to shape the beam through an LCD matrix. Contrary to Xenon light sources, the absence of infrared radiation in the light emitted by LEDs offers the possibility of increasing the source power opening up a number of possibilities. These high-resolution systems will be as effective as a Matrix Beam system, but more precise, meeting all six functional criteria listed above.

Glare Free High Beam evaluation criterias

DYNAMIC SHADOW

TECHNOLOGY

LOW BEAM MULTI BEAM SAIL BEAM

MATRIX BEAM PIXEL LIGHTING

CRITERIA Illuminating pedestrians and hazards Beam stability below the cut-off Beam stability above the cut-off Light output equivalent to high beam Precise tracking of the vehicle detected Obscuring several different areas

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