Recessed reflector-type light

A reflector light comprising:

• a reflector having
• a reflective inner surface having a front edge defining a ceiling plane and substantially symmetrical to a symmetry plane perpendicular to the ceiling plane and a rear edge and
• a forwardly open rear-end compartment bisected by the symmetry plane, extending rearward from the rear edge, and remote from the ceiling plane;
• a lamp in the compartment on the symmetry plane, and
• an at least partially light-passing diffuser separate from the reflector, lying between the reflector front edge and the lamp, substantially symmetrical to the symmetry plane, and having a light-emitting outer surface directed toward the ceiling plane, the reflector surface being shaped such that light emitted by the diffuser surface is reflected by the reflector surface outward in a space symmetrical to the symmetry plane and bounded by a family of lines extending from the rear reflector edge, tangenting the reflector front edge and traversing the symmetry plane, the diffuser surface lying between the family of lines and the lamp.