US Patent No. 10,485,075

AUTOMOTIVE LAMP WITH COMPENSATION OF THE LUMINOUS FLUX OF THE LIGHT SOURCE


Patent No. 10,485,075
Issue Date November 19, 2019
Title Automotive Lamp With Compensation Of The Luminous Flux Of The Light Source
Inventorship Miguel-Angel Pena, Martos (ES)
Manuel Calmaestra, Martos (ES)
Antonio Domingo Illan, Martos (ES)
Juan-Jose Santaella, Martos (ES)
Miguel Angel Cantudo, Martos (ES)
Assignee VALEO ILUMINACION, Martos (ES)

Claim of US Patent No. 10,485,075

1. An automotive lamp comprising:a light source driven by an electric current; and
an electronic circuit configured to modify the electric current driving the light source; wherein
the electronic circuit comprises a plurality of discrete analog electronic components;
the electronic circuit is configured:
to modify the electric current driving the light source so as to drive the light source with a first electric current IL1 or with a second electric current IL2;
to switch from the first electric current IL1 to the second electric current IL2 when a temperature T of the light source increases and exceeds a first temperature level TL1inc (330); and
to switch from the second electric current IL2 to the first electric current IL1 when the temperature T increases and exceeds a second temperature level TL2inc;
the second electric current IL2 is greater than the first electric current IL1; and
the second temperature level TL2inc is greater than the first temperature level TL1inc.