Device for determining a 3d structure of an object

A device for determining a 3D structure of an object, comprising:

• first and second laser emitters which generate laser radiation with first and second different wavelengths, respectively;
• a first beam splitter, which splits the laser radiation of each laser emitter into a reference radiation and an illuminating radiation, wherein the illuminating radiation is adapted to impinge on the object to be measured, be reflected by the object as object radiation, and interfere with the reference radiation to form interference patterns;
• a detector adapted to receive the interference patterns;
• a selection hologram configured to exclusively deflect object radiation which impinges on the selection hologram within a predefined incidence angle range, wherein the deflected object radiation impinges on a determination area of the detector at an angle within a determination angle range;
• and
• wherein the selection hologram is further configured to pass object radiation which impinges on the selection hologram outside of the incidence angle range undiffracted, wherein the undiffracted radiation either passes by the determination area of the detector or impinges on the determination area at an angle outside the determination angle range.