Optical element for an emitting unit of an optical acquisition device, emitting unit, optical acquisition device, motor vehicle, and method

Abstract

The invention relates to an optical element (13) for an emitting unit (8) of an optical acquisition device (3), wherein the optical element (13) comprises a first side (13a) having a reflective first free-form surface (F1) and a second side (13b), which is opposite to the first side (13a), having a refractive second free-form surface (F2). Furthermore, the optical element (13) is designed to transmit a beam bundle (10) incident on the second side (13b) on the optical element (13) at least in large part through the second free-form surface (F2) up to the first free-form surface (F1), to reflect the beam bundle (10) transmitted through the second free-form surface (F2) up to the first free-form surface (F1) at the first free-form surface (F1), and to emit the beam bundle (10) reflected from the first free-form surface (F1) via the second free-form surface (F2). In this case, the first free-form surface (F1) is designed to increase a divergence of the beam bundle (10) incident on the first free-form surface (F1), and the second free-form surface (F2) is designed, upon emission of the beam bundle (10) reflected from the first free-form surface (F1), to reduce the divergence increased during the reflection.

Dependencies are inferred from the claim text.