The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 2025
Filed:
Jun. 22, 2022
Valeo Vision, Bobigny, FR;
Rabih Taleb, Bobigny, FR;
Valeo Vision, Bobigny, FR;
Abstract
A method for operating an automotive lighting device including at least one solid-state light source. The method includes defining a color allowance condition, feeding the light source with a current value which produces a luminous flux value higher than a minimum luminous flux threshold value, measuring the temperature in the light source, checking whether the output color satisfies the allowance condition and increasing or decreasing the current value, always keeping the current such as it produces an acceptable color. With the checking includes perform a pulse width modulation of the current value to keep an average value of the current which produces a luminous flux value higher than the minimum luminous flux threshold value. The invention also provides an automotive lighting device comprising a control element to carry out the steps of this method.