Index
A
Adaptation, brightness, 8
Age level, recommended illuminance values, 125–
126
Air-conditioning load, ballast systems, 103
Alternating current, electrical circuits, 136
Aluminum, reflector materials, 109
Aluminum reflector (AR) lamp, 76
Ambient light:
design, 220–224
light elements, 14, 16, 17–18
American National Standards Institute (ANSI), 94
Amperes, electricity, 135
Aperture, recessed housings, 149
Aperture lamps, fluorescent lamps, 87–88
Architectural coves, ceiling plane wash lights, 184–
186, 187, 190–193
Architectural surfaces, lighting design, 213–218
Architecture/light integration, design, 240–242
Artwork, lighting design, 224–229
Astigmatic vision, 5
Asymmetric wash lights, 169–178
downlight/wall-washer, 169–171
reflector wall-washers, 171–178
Autotransformer dimmers, 142
Auxiliary equipment, 99–104
ballast systems, 100–104
transformers, 99–100
Awnings, shading devices, 58, 59
B
Baffles, glare control, 116, 118–119
Balance of brightness, design, 229–237.See also
Brightness
Ballast systems, 100–104
air-conditioning load, 103
efficiency, 102–103
electromagnetic, 101
electronic, 103
energy-saving, 104
fluorescent dimming ballasts, 103–104
fluorescent heater-cutout ballasts, 104
fluorescent lamps, 83–86
generally, 100–101
high-intensity discharge (HID) lamps, 96
power factor, 101–102
Bases, incandescent lamps, 64, 67
Beam-spread, luminaires, 25
Black light fluorescent lamps, 92
Brain:
color perception, 9–10
perception, 6
Branch circuit, electric distribution, 138
Brightness, 25–42.See alsoContrast
color, 9
degrees of, 12–14
design, balance, 229–237
direction and distribution of light, 25–31
emotional impact, 11
glare, 35–41
luminance compared, 25
perception, 6, 8
photometrics, 122–123
relative brightness for equal attraction, table, 259
sparkle, 41–42
subjective impressions, 18
surface finishes and reflectance, 31
three-dimensional form, 31, 33–35
Brilliants, sparkle, 16–17
BX, electrical wiring, 136
C
Cartesian graph, luminous intensity distribution curve,
123–124
Ceiling plane, wash lights, 182–193
Central lighting control systems, 146–148