Term
•- public spaces, simple orientation, occasional visual task
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Definition
| Ambient lighting IS divided into 3 categories for type of function performed in the space |
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Term
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•large visual task, small visual task, and very small visual task
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Definition
| Task lighting divided into categories for the degree of difficulty of the task |
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Term
| Ceilings, walls, floors, furnitings, work surfaces |
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Definition
Illuminance calculations USE THE
Surface reflectance FOR WHICH AREAS |
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Term
| Cost of Electricity is the largest expense componet |
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Definition
| is the largest component for lighting costs because it is an ongoing expense |
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Term
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Definition
| provides connection between building wiring and the luminaire |
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Term
| Housing, lamp, light & brightness control elements, lamp holder, connection topower |
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Definition
| Luminaries consist of what 6 components |
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Term
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Definition
| Should enhance the overall concept of the space |
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Term
1. Coordinated with aesthetic features of the space
An inherent feature compatible with the architecture
2. Coordinated with building systems – electrical, HVAC, fire suppression |
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Definition
| integrated, lighting must be what 2 things and why? |
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Term
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Definition
| placed parallel to the wall an equal distance apart (on center) and out from the wall (square rule). These can also help reduce the appearance of “scallops” on the wall |
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Term
| Continuous linear point-source wall washer – |
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Definition
| This light is placed closer to the wall, these produce a grazing light that is more continuous |
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Term
| Continuous linear diffuse |
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Definition
| This type of wall washer lightbest for ceilings heights between 8’ and 10’ |
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Term
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Definition
| luminaire is placed below the ceiling and shines upward to produce even light levels |
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Term
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Definition
| What type of lighting on the walls places equal emphasis on all works and is useful for areas where pieces might change often so the lighting design is flexible |
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Term
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Definition
What hould enhance the overall concept of the space &
Must be functional since other elements can not be seen without it |
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Term
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•Coordinated with aesthetic features of the space
•An inherent feature compatible with the architecture
•Coordinated with building systems – electrical, HVAC, fire suppression
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Definition
| What 3 ways should lighting be integrated into the design? |
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Term
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•Lighting vertical surfaces helps define the boundaries of the space
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Definition
| Lighting Vertical surfaces helps do what? |
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Term
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•For uniform vertical surfaces, lighting should be:
Point-source wall washer |
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Definition
| What type of light is placed parallel to the wall at a distance approx. 1/3 the height of the wall; fixtures should be located an equal distance apart (on center) and out from the wall (square rule) |
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Term
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Continuous linear point-source wall washer |
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Definition
| What type of light is placed closer to the wall, these produce a grazing light that is more continuous; following the square rule means that being closer to the wall would imply that they are also closer together |
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Term
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Definition
| This type of lighting provides uniform levels of light; best when the task area is large or when the space may be reconfigured often |
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Term
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Definition
| This type of light provides light for specific areas; best when activities are fairly permanent. Lighting is first provided for the task and then ambient light supplements what is used for focal glow and to accommodate for computer screens |
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Term
| PROS & CONS OF INCANDESCENT BULBS |
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Definition
- waste a lot of energy
- gets hot
- “Edison-base” bulb - cheap, effective, and produces plenty of high-quality light
- life cycle about 1,000 hours |
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Term
| PROS AND CONS OF FLUORESCENT BULBS: |
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Definition
- energy-efficient alternative to incandescent
- produce a sickly blue-green hue
- audible, headache-inducing hum
- don’t create the broad-range light quality
- Fluorescent tube lighting like the T8, T5, and T12
- The tube widths are measured in eighths of an inch, so a - T5 has a diameter of 5/8 of an inch
- T12 is 1:½ inches, etc.
- self-ballasted compact fluorescent lamp, or CFL GOOD
- outlast many traditional incandescents
- Not as good light quality or “color-rendering” as incandescents
- CFLs, or any fluorescents, are not typically dimmable |
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Term
| PROS AND CONS OF LED LIGHTS |
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Definition
- cost-effective, more expensive than both Fluorescent & Hal.
- offer excellent color rendering
- amp life that stretches for decades
- dimmable
- available in all shapes and sizes
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Term
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Definition
- Is an incandescent light
- thin tungsten filament within their glass envelope
- electricity flows through it, it heats up
- get its names from the kinds of gases added
- noble gases on the Periodic Table, odorless and colorless
- efficient than regular incandescent lamps
- 10,000 hours, lasting 5 times longer than the average halogen lamp
- takes less energy to achieve the same lumen output.
- requires less heat to produce light,
- safer and more durable than halogens
- have perfect CRIs (color rendering indexes) of 100
- portraying colors accurately
- are perfect for under cabinet lighting, task lighting, cove lighting, and also accent lighting. |
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Term
| PROS AND CONS OF High-intensity discharge (HID) |
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Definition
- Used in street lighting or flood lights used to illuminate football stadiums
- gas discharge lamps which produce light
- wattages from 25 watts for self ballasted metal halide lamps
- 35 watts for high intensity sodium vapor lamps
- 1000 watts for high intensity mercury vapor and sodium vapor lamps and
- 500 watts for metal halide lamps.
- require special control gear called ballast to operate
- arc tube which is filled with gas
- The color and intensity of the light and also the efficacy of the lamp
- most HID lamps cannot be instantly turned on again
- generally have good life span
- mercury vapor lamps is about 24000 hours
- metal halide about 10000 – 15000 hours
- high intensity sodium vapor lamps about 10000 – 24000 hours
- lifespan is dependent on the total amount of on time and number of on/off cycles |
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Term
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Definition
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Term
| TYPES OF INCANDESCENT LIGHT BULBS |
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Definition
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Term
| INCANDESCENT BULB SHAPES AND NAMES |
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Definition
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Term
| NAMES AND TYPES OF Fluorescent BULBS |
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Definition
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Term
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Definition
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Term
| EXAMPLE OF A High-intensity discharge (HID) BULB |
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Definition
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