Interior Lighting for Designers

Ceramic metal halide lamps:
color, 49–50
described, 94
Circuit(s), electricity, 135, 136–137
Circuit breaker, electrical circuits, 137
Circular contour reflector, described, 107–108
Clerestories, daylight design, 54–55
Coefficient of utilization (CU):
illuminance calculations, 130–131
table of, 266
Cold-cathode fluorescent lamp, 81–82
Color, 43–50
brightness, 31, 32
daylight, 51
light, 4
light sources, 46–50
fluorescent, 48–49
high-intensity discharge (HID) light, 49–50, 94
incandescent, 47–48
perception, 9–10
rendering, 45–46
spectral distribution, 43–45
subjective impressions, 46
temperature, 45
Color constancy, defined, 10
Colored light:
fluorescent lamps, 92
incandescent lamps, 77–80
relative output table, 258
Color Rendering Index (CRI), 45–46, 244–245
Color vision, eye, 5
Compact fluorescent lamps, 88–91
Complete circuit, electricity, 135
Compound contour reflector, described, 107–108
Computer assistance, illuminance calculations, 132–
133.See alsoVideo display terminals (VDTs)
Concave lens, refraction, 113, 115
Concentrated distribution, light, 25, 26–27, 28
Conductors, electrical wiring, 136
Cones, eye, 5, 8, 9
Conservation of materials, artwork lighting design,
227–229
Contours, reflection, 106–108.See alsoReflection
Contrast.See alsoBrightness
brightness, 8
emotional impact, 11
Control station, central lighting control systems, 146–
148
Convex lens, refraction, 113, 114–115
Correlated color temperature, 45
Costs, life cycle, electricity, 138–139.See also
Energy efficiency
Coves.SeeArchitectural coves
Cross-baffles, object lights, 197
Cube-cell louvers, object lights, 197

Current, electric, 135

Cutoff angle:

luminaires, 26

vertical surface illumination, 216

D

Daylight, 51–62

artwork lighting design, 227–229

design for, 52–56

energy control, 62

glazing materials, 60

overview, 51–52

quantity, 60, 62

shading devices, 56–60, 61

Debuzzing coil, dimming control, 144

Decorative multidirectional luminaires, 202, 204–208

Deep-cell open parabolic louvers, rectilinear

fluorescent downlights, 168

Degrees of stimulation, psychology, 11–12

Design, 209–241

ambient lighting, 220–224

architectural surfaces, 213–218

architecture/light integration, 239–241

artwork, 224–229

balance of brightness, 229–237

energy-effective, 237–240

integration in, 209

task lights, 218–220

visual clarity, 209–213

Diffuse light:

distribution, 25–26, 27, 29

low-contrast environment, 12

three-dimensional form, 34

Diffuse reflection, described, 105–106

Diffuse reflector, described, 109, 110

Diffuse transmission, light control, 111

Dimming control and systems, 141–146

autotransformer dimmers, 142

daylight energy control, 62

fluorescent dimming ballasts, 103–104

fluorescent lamps, 145–146

high-intensity discharge (HID) lamps, 97, 146

incandescent lamps, 143–145

resistance dimmers, 141–142

solid-state dimmers, 142

square law dimming curve, 143

Direct current, electrical circuits, 136

Direct distribution, light, 25

Direct glare, described, 36–38

Direct/indirect luminaires, 27, 30

Direct-indirect multidirectional luminaires, 198, 202

Directional incandescent lamps, 71–72

Directional-source downlights, point source

downlights, 158–159, 164

INTERIOR LIGHTING FOR DESIGNERS