Circuit for producing a laser diode control signal

A laser diode receptacle, comprising:

• a circuit for generating a modulated laser diode control signal from a laser diode control signal, the circuit including:
• an RF modulator including an input for receiving the laser diode control signal and for modulating the laser diode control signal using a modulation signal;
• an adjustment arrangement for adjusting the RF modulator, the adjustment arrangement being configured or configurable as a function of at least one laser diode operating information, wherein:
• the adjustment arrangement includes a plurality of circuit elements that are selectively activated according to a plurality of different configurations,
• the adjustment arrangement includes an input for receiving a signal based on the laser diode operating information,
• the adjustment arrangement is selectively configured to assume each configuration of the circuit elements as a function of a corresponding value of the signal based on the laser diode operating information,
• each configuration of the adjustment arrangement adjusts at least one of a modulation frequency and an output impedance of the RF modulator, and
• the laser diode operating information encompasses at least one of a laser diode operating current intensity I and a laser diode operating voltage U;
• and
• an evaluation circuit configured to generate a quality signal from a ratio of the laser diode operating voltage U to the laser diode operating current intensity I.

A projector, comprising:

• a laser diode receptacle including a circuit for generating a modulated laser diode control signal from a laser diode control signal, the circuit including:
• an RF modulator including an input for receiving the laser diode control signal and for modulating the laser diode control signal using a modulation signal;
• an adjustment arrangement for adjusting the RF modulator, the adjustment arrangement being configured or configurable as a function of at least one laser diode operating information, wherein the laser diode control signal is an image data signal, wherein:
• the adjustment arrangement includes a plurality of circuit elements that are selectively activated according to a plurality of different configurations,
• the adjustment arrangement includes an input for receiving a signal based on the laser diode operating information,
• the adjustment arrangement is selectively configured to assume each configuration of the circuit elements as a function of a corresponding value of the signal based on the laser diode operating information,
• each configuration of the adjustment arrangement adjusts at least one of a modulation frequency and an output impedance of the RF modulator, and
• the laser diode operating information encompasses at least one of a laser diode operating current intensity I and a laser diode operating voltage U;
• and
• an evaluation circuit configured to generate a quality signal from a ratio of the laser diode operating voltage U to the laser diode operating current intensity I.

A method for adjusting an RF modulator in a circuit for producing a modulated laser diode control signal from a laser diode control signal, wherein the circuit has an RF modulator including an input for receiving the laser diode control signal and for modulating the laser diode control signal using a modulation signal, the method comprising:

• ascertaining at least one laser diode operating information;
• configuring, as a function of the laser diode operating information, an adjustment arrangement of the circuit for an adjustment of the RF modulator for producing the modulation signal, wherein the configuring includes:
• receiving, by the adjustment arrangement a signal based on the laser diode operating information,
• selectively activating a plurality of circuit elements of the adjusting arrangement according to one of a plurality of different configurations, as a function of a corresponding value of the signal based on the laser diode operating information, wherein each configuration of the adjustment arrangement adjusts at least one of a modulation frequency and an output impedance of the RF modulator, wherein the laser diode operating information encompasses at least one of a laser diode operating current intensity I and a laser diode operating voltage U;
• and
• generating a quality signal from a ratio of the laser diode operating voltage U to the laser diode operating current intensity I.