Interior Lighting for Designers

reflector is larger than the parabolic contour;
they are used infrequently today (figure
12.11).
Shallow-contour, silver-bowl, open-reflec-
tor downlights are used for a general diffusion
of light combined with sparkle at the ceiling
plane, which is provided by the luminaire’s
“pebbled”-surface aluminum reflector. The

reflecting bowl of the lamp throws light up into

the luminaire reflector, which in turn redirects

the light in a controlled downward beam

(figure 12.12). The silver-bowl lamp provides

built-in glare control.

Directional-source downlights do not

require a light-controlling element because

the AR, MR, PAR, or R lamp provides that

INTERIOR LIGHTING FOR DESIGNERS

Figure 12.8Tungsten-halogen, parabolic, open-reflector downlight with 7-inch aperture.