Interior Lighting for Designers

Fluorescent lamps (continued)
stroboscopic effect, 92
variations of, 87–88
Flux, photometrics, 121
Flynn, John, 18, 23, 46
Focal glow, light elements, 14, 16, 17, 18.See also
Task lights
Focused light, low-contrast environment, 12
Footcandle values.SeePhotometrics
Four-way switch, 140
Fresnel lens, refraction, 113, 114, 115
Fuse, electrical circuits, 137

G
Glare.See alsoLuminaire(s)
brightness, 35–41
control of, 118–120
upward light, 27
Glazing materials, windows, 60
Glitter.SeeSparkle
Grazing light:
linear wash lights, 180
texture, 33–34
Greenfield conduit, electrical wiring, 136

H
Halogen infrared (IR) lamp, 75.See alsoTungsten-
halogen lamps
Heat gain, daylight design, 56
Hertz unit, electrical circuits, 136
High brackets, multidirectional luminaires, 202, 203
High-contrast environment, 14, 15
High-intensity discharge (HID) lamps, 92–97
bulb shapes, 94–96
color, 45, 46, 49–50
dimming, 97
dimming control, 146
lamp life, 97
light output, 97
operation, 96
types of, 92–94
High-load degree of stimulation, 11–12
High-output (HO) lamps, fluorescent lamps, 87
High-pressure sodium (HPS) lamps, high-intensity
discharge (HID) light, 49, 93, 94
Hot-cathode fluorescent lamp, 82–83
Housings, luminaires, 149–154
Hue:
color perception, 9
defined, 4
Hyperopic vision, 5

I
Illuminance:

calculations of, photometrics, 126–133

photometrics, 121, 123

recommended values, photometrics, 124–126

Illuminance categories, determination of, table, 269

Illuminance values:

age level recommendation, 125–126

photometric recommendation, 124–126

table of recommended, 267–268

Illuminating Engineering Society of North America

(IESNA), 122, 125–126

Illusion, perception, 6, 7

Incandescent lamps, 63–80

bases of, 64, 67

color, 45, 47–48

colored light, 77–80

comparative luminance table, 256–257

designations and properties, table, 246–253

dimming control, 143–145

Energy Policy Act of 1992 (EPACT), 72–73

filaments, 64, 68

lamp efficacy and life, 68

light output, 68–69

linear wash lights, 179

low-voltage lamps, 75–77

tungsten-halogen lamps, 73–75

types of, 63–64, 65–66, 69–73

directional, 71–72

nondirectional, 69, 70, 71

semi-directional, 69, 71

Infrared light, halogen infrared (IR) lamp, 75.See also

Tungsten-halogen lamps

Infrared present wireless remote switch control, 141

Instant-start ballast circuits, fluorescent lamps, 84–85

Insulators, electrical wiring, 136

Integration, in design, 209

Intensity, photometrics, 121

Inverse-square method, illuminance calculations,

126–129

Iris, eye, 5

J

Junction box:

pendant-mounted housings, 154, 155

recessed housings, 149, 150

semi-recessed housings, 151

surface-mounted housings, 149, 152, 153

K

Kelly, Richard, 14, 16

Kerosene lamps, subjective impressions, 46

L

Lambert, Johann Heinrich, 123

Lambertian surfaces, photometrics, 122–123

INTERIOR LIGHTING FOR DESIGNERS