×

LED light

  • US 9,481,293 B2
  • Filed: 10/13/2009
  • Issued: 11/01/2016
  • Est. Priority Date: 10/20/2008
  • Status: Active Grant
First Claim
Patent Images

1. An LED light for a motor vehicle, comprising:

  • a plurality of LED fields, wherein each LED field comprises at least one LED, wherein the LED fields are connected in series, the different LED fields being spaced apart so that a relative position of an illuminated LED field is perceptible by a human being;

    a housing for supporting the LED fields;

    a circuit board comprising driving electronics for operating the LED fields, the circuit board being configured to apply an electrical current to the LED fields;

    the driving electronics comprising;

    a plurality of comparators, where each comparator is associated with a different LED field, wherein an output of each comparator is configured to turn its associated LED field on and off depending on input signals into the associated comparator;

    a threshold voltage generator for each comparator, wherein a different threshold voltage is applied to a first input of each of the comparators;

    a variable signal being commonly applied to a second input of all the comparators;

    wherein a number of the LED fields illuminated and positions of the LED fields illuminated at any time, under control of the output of the comparators, is perceptible by the human being;

    a plurality of collimators in the housing, the plurality of collimators comprising a separate collimator associated with each of the LED fields that causes the light from illuminated LED fields to be directed to separate areas, where the different areas illuminated are perceptible by the human being; and

    wherein the particular number of LED fields illuminated at any one time and a particular position of the LED fields illuminated produce a perceptible light field that conveys a particular control by a driver of the motor vehicle.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×