Built-in light

A built-in lamp comprising a holder for fastening in an installation surface (11), a bulb (6) and a direct light reflector, with a reflector opening disposed in the direction of illumination defining a generally planar direct light discharge region (1), which is surrounded by a generally coplanar diffuse light discharge region (2) such that scattered light is discharged from the diffuse light discharge region (2) around the direct light discharge region (1), characterized in that

• the bulb (6) and the direct light reflector (4) are arranged in a housing (10), said housing having a planar inner surface which overlies the reflector and which forms an additional reflector (7) which reflects at least a portion of light from said bulb to said diffuse light discharge region;
• and
• in that the housing (10) is terminated in at least a largely dust-proof manner by a transparent planar plate extending across and covering said direct light discharge region and a planar scattering plate extending across and covering said diffuse light discharge region, said transparent planar plate and said planar scattering plate being coplanar with each other, and
• wherein the direct light discharge region (1) has a circular shape, and the diffuse light discharge region (2) is bounded on the inner side by a circular line (3) and on the outer side by a polygonal line or by a further circular line.