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Light Fixtures: A Lamp in a Box Light fixtures are MORE than a decorative object. 2
What defines a Light Fixture? Keyless Porcelain Socket Keyed (pull chain) Porcelain Socket 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 3
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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 horizontal Light going Up / Indirect Light going Down / Direct Distribution of Light 9
Distribution Types Direct Semi-Direct General Diffuse Direct-Indirect Semi-Indirect Indirect 10
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Distribution: Direct 100% of the light directed down Direct 13
Distribution: Direct 100% of the light directed down Direct 14
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Distribution: Semi-Direct Smaller portion direct up - Most of the light directed down Semi-Direct 16
Distribution: Direct - Indirect 50% of the light directed up - 50% of the light directed down Direct-Indirect 17
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Distribution: General Diffuse Light directed evenly around General Diffuse 19
Distribution: General Diffuse Light directed evenly around General Diffuse 20
Distribution: Semi-Indirect Most of the light direct up - Small portion of the light directed down Semi-Indirect 21
Distribution: Semi-Indirect Most of the light direct up - Small portion of the light directed down Semi-Indirect 22
Distribution: Semi-Indirect Most of the light direct up - Small portion of the light directed down Semi-Indirect 23
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Distribution: Indirect 100% of the light directed up Indirect 25
Distribution: Indirect 100% of the light directed up Indirect 26
We Define Light Fixtures by their Mounting 27
Mounting Surface Typical Components: Recessed Junction Box Housing Back Plate Lamp and Lamp Socket Diffuser or Shielding Base or Leg for Table Lamp 28
Surface Mounted Ceiling Light Flush Mounts 29
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Wall Sconce / Wall Bracket / Wall Marker Lights Wall Mounts 31
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Table Lamps / Floor Lamps Task Lights 33
Mounting Pendant Typical Components: Recessed Junction Box Housing Canopy Stem Lamp and Lamp Socket Diffuser or Shielding 34
Pendants Suspended Lights / Chandelier 35
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Industrial Pendants High Bays / RLM Pendants 37
Office Pendants Suspended Linear Pendants 38
Mounting Recessed Typical Components: Splice Box Housing Lamp and Lamp Socket Aperture Cone Diffuse or Shielding 39
Downlights High Hats / Recessed Cans / Holes in the ceiling Typical components of a recessed downlight. Square Downlight Round Downlight Adjustable Accent Downlight 40
Downlights High Hats / Recessed Cans / Holes in the ceiling 41
Semi-recessed Downlights Decorative High Hats 42
Step Lights Marker Lights / Wall Path Lights Recessed Wall Uplights 43
In Grade Lights Landscape Uplights / Burial Lights 44
Glare Direct glare from windows and luminaries. Reflected glare on computer screen from ceiling luminaries. 45
Downlight Glare Control ceiling ceiling Shielding from eye level sight line 35-45 deg ceiling sight line ceiling 46
Downlight Glare Control Contour of ceiling aperture or louver to provide Glare Control from normal viewing angles sight line 47
Downlight Shielding Lamp placed above ceiling aperture or louver to provide shielding from normal viewing angles sight line sight line 48
Troffer Shielding sight line Lamp placed above ceiling aperture or louver to provide shielding from normal viewing angles sight line sight line sight line 49
Downlight Reflector Reflectors around or above the lamp used to increase performance of the fixture 50
Trims Aperture Cones / Aperture Trims 51
Troffer 52
Reflector Reflectors around or above the lamp used to increase performance of the fixture 53
Glare Control Contour of ceiling aperture or louver to provide Glare Control from normal viewing angles sight line 54
General or Ambient : Troffer 55
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Exterior Pole or Post Mounted 58
Exterior Building or Ground Mounted 59
Exterior Ground Mounted for Object Lighting 60
Fixtures Inside and Out Underwriters Laboratory Testing Dry Applications Damp Applications Wet Applications Wet/Dry Applications Underwater Applications Corrosive Applications Hazardous Applications 61
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 62