Recessed light field in a round design with flush and borderless ceiling optics for homogeneous lighting and seamless integration into architectural projects, no UV and heat radiation, sheet steel housing, ceiling thickness adjustable, mounting aid to be ordered separately, simple plasterboard installation with drywall screws, flush-mounted plastering of the luminaire required, microprism panel made of acrylic glass with matt film for insertion, 5-pin connection terminal, operating device (LED converter) integrated (with DALI dimming)