Circuit for generating modulated laser diode drive signal, has adjusting unit for adjusting radio frequency (RF) modulator, which is configured in dependence on laser diode operating information

摘要

The circuit (100) has a RF modulator (6) for modulating the laser diode drive signal (5) with a modulation signal. An adjusting unit (9) provided for adjusting the RF modulator is configured in dependence on the laser diode operating information. The laser diode operating information comprises the laser diode operating current and/or the laser diode operating voltage. An evaluation circuit (10) is provided for generating quality signal (12) from the ratio of laser diode operating voltage to the laser diode operating current. Independent claims are included for the following: (1) projector; and (2) method for adapting RF modulator.