Patent · US Active

Method of operating at least two laser devices and display device

US12407798B2 · kind B2 · utility

0Cited by

0References

17Claims

0Family size

Assignee

ams-OSRAM International GmbH · DE

Inventors

Sebastian SCHLEGL · Lengfeld, DE
Joerg Sorg · Regensburg, DE

Key dates

Filing date	Jun 15, 2022
Grant date	Sep 2, 2025
Priority date	—
Expiry date	Jul 8, 2042

Classification

Technology area (CPC H)Electricity
CPC primaryH01S5/4025
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A method is described for operating at least two laser devices for generating a display, in which the at least two laser devices generate a sequence of light points. In a first step, a first one of the sequence of light spots is generated during a first period of time by at least one of the at least two laser devices and a voltage drop across the at least one of the at least two laser devices is detected within the first period of time. A target brightness is then determined for a second of the sequence of light points for at least one of the at least two laser devices. Subsequently, a supply current and/or a turn-on time is determined during a second time period for generating the target brightness for the at least one of the at least two laser devices.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.