Lens and optoelectronic lighting device

A lens comprising:

• a base body,
• wherein the base body has a light incidence face through which light can enter the base body,
• the base body has a light exit face through which light which has entered the base body can emerge,
• the light exit face comprises a microlens structure having a plurality of microlenses,
• the light incidence face has at least two collimator segments that collimate light,
• the light incidence face has a light entry region formed differently from the collimator segments,
• the base body has at least two back-reflection regions respectively assigned to one of the two collimator segments to reflect back light collimated by a corresponding collimator segment in a direction of the corresponding collimator segment,
• the base body is a reflection region to reflect light that has entered through the light incidence region in the direction of the microlens structure so that the reflected light can emerge from the base body through the microlens structure, and
• the back-reflection regions respectively comprise one or more prism rings, concentric relative to the optical axis of the collimator segment assigned to the corresponding back-reflection region, comprising a plurality of prisms for total reflection of the collimated light.