Lamp for attachment to ceiling of building space and for illuminating floor surface or portion of building surface, has diffuser element with cup-shaped light entry surface that completely covers light emitting surface

摘要

The lamp (10) has a light emitting surface (15) having a light emitting diode (14), a reflector (16), a lamp housing (18) and a light outlet opening (43), where the light emitting surface is associated with a diffuser element (40) which is arranged in an immediate adjacent manner. The diffuser element has a curved light exit surface (42) and a cup-shaped light entry surface (41) that completely covers the light emitting surface. The light exit surface protrudes into the interior of the reflector or is defined along the interior of the reflector.