Flexible lissajous scanning pattern by phase modulation

A method of controlling an oscillator system, comprising:

• driving a first oscillator structure to oscillate about a first rotation axis at a first oscillation frequency;
• driving a second oscillator structure to oscillate about a second rotation axis at a second oscillation frequency;
• generating a first driving signal to drive an oscillation of the first oscillator structure with a first oscillation phase and the first oscillation frequency;
• generating a second driving signal to drive an oscillation of the second oscillator structure with a second oscillation phase and the second oscillation frequency, wherein the first oscillation frequency and the second oscillation frequency have a variable frequency ratio with respect to each other that varies over time;
• and
• modulating at least one of the first oscillation phase or the second oscillation phase to modulate the variable frequency ratio.

An oscillator system, comprising:

• an oscillator structure configured to oscillate about a first rotation axis at a first oscillation frequency and oscillate about a second rotation axis at a second oscillation frequency;
• and
• a driver circuit configured to generate a first driving signal to drive a first oscillation of the oscillator structure about the first rotation axis with a first oscillation phase and the first oscillation frequency, and generate a second driving signal to drive a second oscillation of the oscillator structure about the second rotation axis with a second oscillation phase and the second oscillation frequency,
• wherein the first oscillation frequency and the second oscillation frequency have a variable frequency ratio with respect to each other that varies over time,
• wherein the driver circuit is configured to modulate at least one of the first oscillation phase or the second oscillation phase to modulate the variable frequency ratio.

A method of controlling an oscillator structure, comprising:

• driving the oscillator structure to oscillate about a first rotation axis at a first oscillation frequency and to oscillate about a second rotation axis at a second oscillation frequency;
• generating a first driving signal to drive a first oscillation of the oscillator structure about the first rotation axis with a first oscillation phase and the first oscillation frequency;
• generating a second driving signal to drive a second oscillation of the oscillator structure about the second rotation axis with a second oscillation phase and the second oscillation frequency, wherein the first oscillation frequency and the second oscillation frequency have a variable frequency ratio with respect to each other that varies over time;
• and
• modulating at least one of the first oscillation phase or the second oscillation phase to modulate the variable frequency ratio.