Upload
lamthien
View
233
Download
3
Embed Size (px)
Citation preview
Page 1
Light Fixtures
1
2
What defines a Light Fixture?
Specifications: • Method of Mounting • Method to make
Electrical Connection • Housing
• Lamp • Lamp Socket • Decorative Lens or
Diffuser • Shielding or Optics • Support Arms or Stem • Locking Mechanism • Way to access the lamp • Ballast or Transformer • Aperture Trim & Flange
Keyless Porcelain Socket
Keyed (pull chain) Porcelain Socket
Page 6
Light Fixtures
11
Light Fixtures: “A Lamp in a Box” � Light fixtures are MORE than a decorative object.
12
Page 7
Light Fixtures
13
Light Direction
Light travels in a straight line…radiates out from the source
14
Light Direction
Light travels in a straight line…radiates out from the source
25% is lost
Omni Distribution Light Goes Everywhere
Directional Distribution Light Goes Downward
Page 8
Light Fixtures
15
We Define Light Fixtures by their� Distribution of Light
� Goal of a luminaire is to put light where the user needs it
� Convenient way to classify luminaires is by the direction of light emitted from the luminaire
� Commission Internationale de l’Eclairage (CIE) sets up these classifications
Distribution of Light
Light going Up / Indirect Light going Down / Direct
horizontal
16
Semi-Indirect Indirect
Direct Semi-Direct General Diffuse
Distribution Types
Direct-Indirect
Page 10
Light Fixtures
19
Distribution: Direct
Direct
100% of the light directed
down
20
Distribution: Direct
Direct
100% of the light directed
down
Page 11
Light Fixtures
21
22
Distribution: Semi-Direct
Semi-Direct
Smaller portion direct
up -
Most of the light directed
down
Page 12
Light Fixtures
23
Distribution: Direct - Indirect
Direct-Indirect
50% of the light directed up
- 50% of the light directed down
24
Page 13
Light Fixtures
25
Distribution: General Diffuse
General Diffuse
Light directed evenly around
26
Distribution: General Diffuse
General Diffuse
Light directed evenly around
Page 14
Light Fixtures
27
Distribution: Semi-Indirect
Semi-Indirect
Most of the light direct up
- Small portion
of the light directed down
28
Distribution: Semi-Indirect
Semi-Indirect
Most of the light direct up
- Small portion
of the light directed down
Page 15
Light Fixtures
29
Distribution: Semi-Indirect
Semi-Indirect
Most of the light direct up
- Small portion
of the light directed down
30
Page 16
Light Fixtures
31
Distribution: Indirect
Indirect
100% of the light directed
up
32
Distribution: Indirect
Indirect
100% of the light directed
up
Page 17
Light Fixtures
33
We Define Light Fixtures by their� Mounting
34
Mounting � Surface
Typical Components: • Recessed Junction
Box • Housing
• Back Plate • Lamp and Lamp
Socket • Diffuser or Shielding • Base or Leg for Table
Lamp
Page 19
Light Fixtures
37
Wall Sconce / Wall Bracket / Wall Marker Lights Wall Mounts
38
Semi-Indirect
Page 20
Light Fixtures
39
Table Lamps / Floor Lamps Task Lights
40
Mounting � Pendant
Typical Components: • Recessed Junction
Box • Housing
• Canopy • Stem • Lamp and Lamp
Socket • Diffuser or Shielding
Page 22
Light Fixtures
43
Industrial Pendants High Bays / RLM Pendants
44
Office Pendants Suspended Linear Pendants
Page 23
Light Fixtures
45
Mounting � Recessed
Typical Components: • Splice Box • Housing
• Lamp and Lamp Socket
• Aperture Cone • Diffuse or Shielding
46
Typical components of a recessed downlight.
Downlights High Hats / Recessed Cans / “Holes in the ceiling”
Square Downlight Round Downlight Adjustable Accent Downlight
Page 24
Light Fixtures
47
Downlights High Hats / Recessed Cans / “Holes in the ceiling”
Direct
48
Semi-recessed Downlights Decorative High Hats
Semi-Direct
Page 25
Light Fixtures
49
Step Lights Marker Lights / Wall Path Lights
4Recessed Wall Uplights
50
In Grade Lights Landscape Uplights / Burial Lights
Page 26
Light Fixtures
51
Glare
Direct glare from windows and luminaries.
Reflected glare on computer screen from ceiling luminaries.
52
Shielding from eye level
ceiling
ceiling
ceiling
35-45 deg
sight line
sight line
ceiling
Downlight Glare Control
Page 27
Light Fixtures
53
Downlight Shielding
sight line
Lamp placed above ceiling aperture or louver to provide
shielding from normal viewing angles
Direct
54
Downlight Reflector
Reflectors around or above the lamp used to increase performance of the fixture
Direct
Page 28
Light Fixtures
55
Downlight Glare Control
Contour of ceiling aperture or louver to provide Glare
Control from normal viewing angles
sight line
Direct
56
Trims Aperture Cones / Aperture Trims
Page 29
Light Fixtures
57
Troffer Shielding
sight line
sight line sig
ht line
sight
line
Lamp placed above ceiling aperture or louver to provide
shielding from normal viewing angles
Direct
58
Reflector
Reflectors around or above the lamp used to increase performance of the fixture
Direct
Page 30
Light Fixtures
59
Glare Control
sight line
Contour of ceiling aperture or louver to provide Glare
Control from normal viewing angles
Direct
60
Troffer
Page 33
Light Fixtures
65
Exterior
� Building or Ground Mounted
66
Exterior � Ground Mounted for Object Lighting
Page 34
Light Fixtures
67
Fixtures Inside and Out
� Underwriters Laboratory Testing • Dry Applications • Damp Applications • Wet Applications • Wet/Dry Applications • Underwater Applications • Corrosive Applications • Hazardous Applications
68
Finding Fixtures
� General Lighting Mnfrs Websites • www.Lightolier.com • www.Erco.com
� Light Fixture Search Sites • www.LightSearch.com • www.eLumit.com
� Retail Sites • www.Lightology.com • www.unicahome.com • www.lumens.com • www.100watt.net