Abstract: A luminaire comprised generally of a mounting plate including a plurality of mounting blocks secured to the mounting plate; and a plurality of LEDs, wherein at least one of the LEDs is positioned upon each of the mounting blocks. The mounting blocks include face portions and may be arranged in a plurality of configurations on the mounting plate.

Abstract: A luminaire comprised generally of a mounting plate including a plurality of mounting blocks secured to the mounting plate; and a plurality of LEDs, wherein at least one of the LEDs is positioned upon each of the mounting blocks. The mounting blocks include face portions and may be arranged in a plurality of configurations on the mounting plate.

Abstract: The instant invention is a luminaire comprised generally of mounting plate including a plurality of mounting blocks secured to said mounting plate; and a plurality of LEDs, wherein at least one of said LEDs is positioned upon each of said mounting blocks. The mounting blocks include face portions having a plurality of pitches or angles and may be arranged in a plurality of configurations on said mounting plate.

Abstract: A recessed ceiling light fixture is provided that includes a reflector with multiple ellipsoidal segments. Each ellipsoidal segment reflects light through a common focal point or area. Reflecting the light of each ellipsoidal segment through a common focal point or area, only a very narrow aperture is required. Further, improved light distribution and improved space to mounting height ratios are also provided by using a reflector with multiple ellipsoidal segments.

Abstract: An inert coating of calcium pyrophosphate in finely-divided form is provided on the inner surface of the envelope of a fluorescent sunlamp underneath the phosphor layer to reduce the emission of undesirable short-wavelength ultraviolet radiation (190 nm to 260 nm region). The relative densities of the phosphor layer and undercoating of calcium pyrophosphate are so correlated that the ratio of short-wavelength ultraviolet radiation to erythemal radiation is maintained below a prescribed limit. The particles of calcium pyrophosphate are also larger than about 1 micron and are thus adapted to selectively absorb the undesirable short-wavelength radiations and provide an integral UV-filtering means for the sunlamp.