Lighting Ppt

(1)

Chapter 18

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Natural Light

• _{Natural light}

_:

– _{is provided by the sun.}

– _{makes colors seem sharper and brighter.} – _{makes people feel good.}

– _{gives objects warm, flattering tones.}

(3)

Artificial Light

• _{Artificial light}

_,

_{which is predictable and}

controllable, is produced by:

– _{incandescent bulbs} – _{halogen bulbs}

– _{fluorescent bulbs}

• These sources provide different

(4)

Incandescent Sources

• Incandescent light

– The light is yellow-white, a color that

flatters most skin tones.

• Two types of incandescent light sources

are:

– general-service bulbs – reflectorized bulbs

(5)

Halogen Sources

• _A

_{halogen bulb}

_:

– _{produces a bright, white light that matches}

the quality of pure daylight.

– _{makes colors look their best.}

– _{is available in a variety of sizes and}

shapes.

(6)

Fluorescent Sources

• Fluorescent light

:

– is produced in sealed glass by releasing

electricity through a mercury vapor to create white light.

– is dispersed over a larger area than

incandescent light.

– causes less glare and produce little heat. – is produced in tubes, screw-in bulbs, and

compact fluorescents.

(7)

Fluorescent Sources

• _{Compact fluorescents:}

– _{produce an attractive soft, white light.} – _{use almost 75% less energy than}

incandescent bulbs.

– _{fit a standard lightbulb socket.}

– _{last 10 to 20 times longer than ordinary}

bulbs.

(8)

Applications of Lighting

• _{There are three basic types of lighting:}

– _{general lighting} – _{task lighting}

– _{accent lighting}

• _{A good lighting plan incorporates all}

three types.

(9)

Applications of Lighting

• General lighting

:

– provides a comfortable, even level of

brightness throughout a room.

– allows individuals to see and walk around

safely.

(10)

Applications of Lighting

• _{Direct lighting}

_:

– _{produces strong illumination on the object.} – _{creates sharp contrasts between light and}

darkness.

– _{can cause eyestrain when used as the only}

lighting source.

(11)

Applications of Lighting

• _{Indirect lighting}

_:

– _{is usually focused onto the ceiling or walls.} – _{is more diffused than direct light.}

(12)

Indirect Lighting

• _{The chandelier}

provides direct lighting while the other light

fixtures in this room provide indirect lighting.

(13)

Applications of Lighting

• _{Task lighting}

_:

– _{provides strong light to a small area.}

– _{helps individuals perform specific tasks.}

• _{More light is needed for doing fine}

needlework than for playing table

games.

(14)

Task Lighting

• _{Task lighting is needed to illuminate this}

(15)

Applications of Lighting

• _{Accent lighting}

_:

– _{uses a highly concentrated beam to}

highlight an area or object.

– _{may be used to spotlight household plants}

or illuminate some feature.

(16)

Accent Lighting

• _{Mini-spotlights in}

display cases create

interesting

accent lighting in this family room.

(17)

Lighting Fixtures

• _{Different types of fixtures are designed}

to meet specific lighting needs.

• _{Lighting fixtures are classified as:}

– _{structural fixtures}_{, which are permanently}

built into the home.

– _{portable fixtures}_{, which are not part of the}

(18)

Structural Fixtures

• _{Structural lighting includes:}

– _{luminous ceilings} – _{recessed lights} – _{track lighting} – _{strip lighting}

(19)

Structural Fixtures

• _{Luminous ceilings}

_{are transparent or}

translucent ceiling panels lighted from

above.

– _{Fluorescent tubes provide even light for}

good general lighting.

(20)

Luminous Ceilings

• _{Luminous ceilings are used in bathrooms and}

(21)

Structural Fixtures

• Recessed lights

:

– are small, circular lights installed flush in

the ceiling, or projecting slightly.

– are useful in rooms with low ceilings.

• Light from these fixtures may:

– spotlight one area.

– flood a wall with light.

– provide diffused general lighting.

(22)

Recessed Lights

• _{Recessed lights}

(23)

Structural Fixtures

• _{Track lighting}

_:

– _{is mounted on a metal strip that allows}

fixtures to be placed anywhere along the strip.

– _{is usually considered for accent lighting,}

but can also provide general and task lighting.

(24)

Track Lighting

• _{Track lighting fixtures may be swiveled or}

rotated to change the room’s lighting.

(25)

Structural Fixtures

• _{Strip lighting}

_:

– _{consists of a strip of receptacles to hold a}

series of bulbs.

(26)

Strip Lighting

• Strip lighting is a good source of task lighting,

particularly in bathrooms and dressing areas.

(27)

Portable Fixtures

• _{Portable fixtures are not a structural}

part of the house.

• _{The fixtures include:}

– _{table and floor lamps}

– _{standard wall and ceiling fixtures such as}

chandeliers, pendants, and hanging lights

– _{undercabinet and undershelf fixtures}

(28)

Lamps

• _{Lamps should be}

placed so the shade's bottom edge is eye level to a seated

person.

(29)

Portable Fixtures

• _{Standard wall and ceiling fixtures:}

– _{are considered portable.}

– _{can be placed and removed with relative}

ease compared to structural fixtures.

(30)

Portable Fixtures

• All wall and ceiling lights in this room are

considered portable fixtures.

(31)

Portable Fixtures

• _{Chandeliers are generally designed for}

accent or task lighting.

• _{Hanging light fixtures installed over an}

eating area should:

– _{hang 30" above the table in a room with 8'}

walls.

– _{have an additional 3" for each extra foot of}

(32)

Light Fixtures Over Tables

• _{Light fixtures over}

eating areas should allow a 30" vertical

clearance above the tabletop.

(33)

Portable Fixtures

• _{Undercabinet and undershelf fixtures:}

– _{provide task and accent lighting.} – _{generally use fluorescent lights.}

• _{Undershelf accent lighting uses}

(34)

Undercabinet Fixtures

• Undercabinet fixtures flood countertops with