Device for generating and displaying an image on an observation field using a multifunctional diffractive element

A device for generating and displaying an image on an observation field provided for overlaying information and images, comprising:

• at least one light source for emitting at least one divergent light beam;
• a microscanner for variable deflection of the at least one light beam in a direction of the observation field, wherein the microscanner has at least one axis of rotation for a rotational oscillating movement for deflecting the at least one light beam, is formed as a microelectromechanical system, and is configured to bring about a nonlinear Lissajous projection on the observation field;
• a waveguide which is arranged in a beam path of the at least one light beam between the at least one light source and the microscanner;
• and
• a diffractive element which is arranged on or in the waveguide in such a way that:
• the light beam emitted by the at least one light source is transmitted through the diffractive element before it reaches the microscanner, and
• a light beam deflected by the microscanner is coupled into the waveguide through the diffractive element.