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. 16, 2026
Filed:
Sep. 16, 2022
Signify Holding B.v., Eindhoven, NL;
SIGNIFY HOLDING B.V., Eindhoven, NL;
Abstract
An optical wireless communications transmitter comprising a laser diode () such as vertical cavity surface emitting laser, VCSEL, a bias current delivery circuit () for delivering a bias current to the VCSEL, a modulator () for injecting a modulation current to the VCSEL superposed with the bias current and a temperature sensor for sensing a temperature associated with the VCSEL. A controller () is adapted to set the bias current and the current modulation depth in dependence on the sensed temperature to achieve a target operating condition in the form of a data transmissions rate and where the bias current is set to a lowest possible level with the current modulation depth selected, and when a higher data transmission rate is needed the modulation depth is increased taking into account a current upper limit.