An optical arrangement with - a light source which emits a light beam in the direction of a first optical axis, wherein a position of the first optical axis is defined in relation to a mechanical structure of the light source, - a first reflector for the light beam arranged away from the light source and - a second reflector for the light beam reflected by the first reflector, wherein the first reflector is a retroreflector which is arranged at a transverse offset to the first optical axis with respect to its main axis, so that it reflects the light beam in the direction of a second optical axis, which is offset parallel to the first optical axis in the transverse direction of the transverse offset, wherein the second reflector attached to the mechanical structure of the light source redirects the light beam reflected by the first reflector in the direction of a third optical axis, which is offset parallel in relation to the second optical axis by a fixed amount in a fixed transverse direction, - either by reflecting back to the first reflector, so that the beam of light (3"') is reflected from the first reflector in the direction of a fourth optical axis, which is offset parallel in relation to the first optical axis by the fixed amount against the fixed transverse direction; - or by reflecting it to a further retro-reflector which is rigidly coupled to the first reflector and aligned in such a way that the beam of light (3"') is reflected by the additional retroreflector in the direction of a fourth optical axis, which is offset by a further fixed amount in the fixed transverse direction in relation to the first optical axis; characterized in that - the fixed amount and the fixed transverse direction are predetermined by the second reflector and its attachment to the mechanical structure of the light source, and - an angle between the transverse offset of the retroreflector to the first optical axis and the parallel offset of the fourth optical axis in relation to the first optical axis against the fixed transverse direction is between 10° and 70° or is between 20° and 50°. - a light source which emits a light beam in the direction of a first optical axis, wherein a position of the first optical axis is defined in relation to a mechanical structure of the light source, - a first reflector for the light beam arranged away from the light source and - a second reflector for the light beam reflected by the first reflector, wherein the first reflector is a retroreflector which is arranged at a transverse offset to the first optical axis with respect to its main axis, so that it reflects the light beam in the direction of a second optical axis, which is offset parallel to the first optical axis in the transverse direction of the transverse offset, wherein the second reflector attached to the mechanical structure of the light source redirects the light beam reflected by the first reflector in the direction of a third optical axis, which is offset parallel in relation to the second optical axis by a fixed amount in a fixed transverse direction, - either by reflecting back to the first reflector, so that the beam of light (3"') is reflected from the first reflector in the direction of a fourth optical axis, which is offset parallel in relation to the first optical axis by the fixed amount against the fixed transverse direction; - or by reflecting it to a further retro-reflector which is rigidly coupled to the first reflector and aligned in such a way that the beam of light (3"') is reflected by the additional retroreflector in the direction of a fourth optical axis, which is offset by a further fixed amount in the fixed transverse direction in relation to the first optical axis; characterized in that - the fixed amount and the fixed transverse direction are predetermined by the second reflector and its attachment to the mechanical structure of the light source, and - an angle between the transverse offset of the retroreflector to the first optical axis and the parallel offset of the fourth optical axis in relation to the first optical axis against the fixed transverse direction is between 10° and 70° or is between 20° and 50°.