Augmented reality display

An augmented reality display for displaying, in addition to a light field of a surrounding, an image to a user's eye, comprising:

• a support;
• a light source supported by the support and configured to emit a collimated light beam carrying said image;
• and
• a micro-electro-mechanical-system, MEMS, mirror supported by the support and configured to deflect the collimated emitted light beam as a collimated deflected light beam;
• a first waveguide supported by the support and having
• an in-coupling section configured to couple the collimated deflected light beam into the first wave-guide,
• a guiding section configured to guide the collimated deflected light beam through the first waveguide, and
• an out-coupling section configured to couple the collimated deflected light beam out from the first waveguide as a collimated expanded light beam whose cross section is larger than the cross section of the collimated deflected light beam;
• and
• a semitransparent combiner supported by the support and configured to superpose the collimated expanded light beam as an image light beam with the light field of the surrounding for displaying to the user's eye;
• wherein at least one of the in-coupling section and/or out-coupling section of the first wave-guide is formed by a diffraction grating;
• wherein the first waveguide has at least one of:
• a mirror at the far side of the in-coupling section diffraction grating when seen from the respective light beam to be coupled in, and/or
• a mirror at the far side of the out-coupling section diffraction grating when seen from the collimated expanded light beam to be coupled out;
• and
• further wherein the mirror is configured to redirect any parts of the light originating from the respective diffraction grating in a reverse direction back to a forward input or output direction of the respective diffraction grating.