Functionalized waveguide for a detector system and a lighting and/or projection system

A functionalized waveguide for a detector system and an illumination and/or projection system, comprising:

• a singular transparent base body having a continuous front side and a continuous rear side, wherein the base body comprises a partly transparent first input coupling region, a second input coupling region, a first output coupling region spaced apart from the first input coupling region in a first direction and a second output coupling region spaced apart from the first output coupling region in a second direction that is opposite to the first direction,
• wherein radiation from an object to be detected is coupled into the functionalized waveguide via the first input coupling region, the first input coupling region comprising a diffractive structure which deflects only a portion of radiation coming from an object to be detected and impinging on the front side, such that the deflected portion propagates as coupled-in radiation in the base body along the first direction as far as the first output coupling region via reflections and impinges on the first output coupling region, and the first output coupling region deflecting at least one portion of the coupled-in radiation impinging on it, such that the deflected portion emerges from the base body via the front side or rear side in order to impinge on the detector system,
• wherein an extent of the first input coupling region in a third direction transverse to both of the first direction and the second direction is greater than an extent of the first output coupling region in the third direction,
• wherein the functionalized waveguide illuminates or projects illumination radiation via the second output coupling region, wherein light from a light or image source located external to the base body impinges on the second input coupling region as the illumination radiation which propagates as coupled-in illumination radiation in the base body along the second direction as far as the second output coupling region via reflections and impinges on the second output coupling region where the second output coupling region deflects at least a portion of the coupled-in illumination radiation impinging on it such that the deflected portion emerges from the base body via the front side or rear side in order to serve for illumination and/or projection, and
• wherein the first input coupling region deflects the deflected portion such that a diffraction is performed in a plane that is oriented perpendicular to the front side and that extends in the first direction but does not diffract in a second plane that is perpendicular to the front side and that extends along the third direction.