Projection system for projecting Lissajous figures and microscanner with coupled oscillators

A microscanner for a projection system for projecting Lissajous figures onto an observation field, wherein the microscanner comprises:

• a deflection unit having a deflection element for deflecting an incident electromagnetic beam, a support structure, and a spring device, wherein the deflection element is suspended in a gimballess manner by means of the spring device on the support structure in such a way that, relative to the support structure, it can simultaneously perform a first rotary oscillation around a first axis of oscillation and a second rotary oscillation around a second axis of oscillation orthogonal thereto to cause a non-linear Lissajous projection in an observation field by deflecting an electromagnetic beam incident on the deflection element during the simultaneous oscillations;
• and
• a control device, which is configured to activate a drive device for driving the deflection unit in such a way that a respective drive effect with respect to at least one of the oscillations of the deflection element is settable individually;
• wherein the spring device is furthermore designed in such a way that it mediates an amplitude-dependent mutual coupling between the oscillations;
• and
• wherein the control device is also configured to activate the drive device as a function of at least one detected state variable of the first oscillation in order to induce a drive effect as a function of at least one detected state variable on the second oscillation by influencing at least one state variable of the second oscillation, so that the drive effect counteracts falling below a predetermined minimum frequency distance between the respective instantaneous oscillation frequencies of the first oscillation and the second oscillation.