Matrix light source with dimming
AssigneeValeo Vision
InventorsZdravko ZOJCESKI, Samuel DAROUSSIN
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Abstract
The invention proposes a matrix light source having a plurality of elementary light sources with light-emitting semiconductor elements, and a common substrate in contact with an integrated circuit. The integrated circuit allows a brightness setpoint to be stored for each elementary light source of the matrix source, and comprises a circuit for managing the power supply for each source, allowing the brightness setpoint to be implemented without needing other external controls.
Claims20
A matrix light source comprising an integrated circuit and a matrix array of electroluminescent semiconductor element-based elementary light sources, wherein
- the integrated circuit is in contact with the matrix array and comprises, for at least two of the elementary light sources,
- a memory element for storing a brightness setpoint to be produced by said elementary light source, the setpoint corresponding to a brightness that is between the minimum and maximum brightness able to be produced by said elementary light source, and
- a circuit for managing the supply of electric power to said elementary light source, configured so as to adapt the average intensity of the electric current flowing through said elementary light source such that the apparent brightness thereof complies with said setpoint.
Dependencies are inferred from the claim text.