公开(公告)号：US20240079851A1

公开(公告)日：2024-03-07

申请号：US17929880

申请日：2022-09-06

Applicant: Google LLC

Inventor： Daniel Malea ,  Bergen Albert Fletcher ,  Matthew Broga ,  Nathniel Ayalew

IPC: H01S5/068 ,  G02B26/10 ,  H01S5/00 ,  H01S5/06 ,  H01S5/062 ,  H01S5/40

CPC classification number: H01S5/068 ,  G02B26/101 ,  H01S5/0071 ,  H01S5/0617 ,  H01S5/062 ,  H01S5/40

Abstract: A laser display may include a light engine, which includes a laser diode and a temperature sensor configured to measure a temperature of the laser diode. The light engine may be coupled to a controller configured to determine a drive current for the laser diode to generate an optical power based on a threshold of the laser diode and an efficiency of the laser diode. The controller is configured to calculate the threshold and the efficiency of the laser diode at the measured temperature using a threshold model and an efficiency model of the laser diode, which are generated using a calibration process.