Light Fixtures - RS Lighting Design - rsltg.comrsltg.com/images/Fixtures.pdf · Page 1 Light...
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Page 1 Light Fixtures 1 2 What defines a Light Fixture? Specifications: • Method of Mounting • Method to make Electrical Connection • Housing • Lamp • Lamp Socket Keyless Porcelain Socket Keyed (pull chain) Porcelain Socket
Transcript of Light Fixtures - RS Lighting Design - rsltg.comrsltg.com/images/Fixtures.pdf · Page 1 Light...
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Light Fixtures
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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
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Light Fixtures
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All Light Fixtures Need Electricity
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Electrical Distribution
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Light Fixtures
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Light Fixtures
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Light Fixtures
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LED Sources are Electronics
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Light Fixtures
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Light Fixtures: “A Lamp in a Box” � Light fixtures are MORE than a decorative object.
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Light Fixtures
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Light Direction
Light travels in a straight line…radiates out from the source
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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
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Light Fixtures
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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
Distribution of Light
Light going Up / Indirect Light going Down / Direct
horizontal
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Semi-Indirect Indirect
Direct Semi-Direct General Diffuse
Distribution Types
Direct-Indirect
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Light Fixtures
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Distribution: Direct
Direct
100% of the light directed
down
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Distribution: Direct
Direct
100% of the light directed
down
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Distribution: Semi-Direct
Semi-Direct
Smaller portion direct
up -
Most of the light directed
down
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Light Fixtures
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Distribution: Direct - Indirect
Direct-Indirect
50% of the light directed up
- 50% of the light directed down
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Light Fixtures
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Distribution: General Diffuse
General Diffuse
Light directed evenly around
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Distribution: General Diffuse
General Diffuse
Light directed evenly around
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Light Fixtures
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Distribution: Semi-Indirect
Semi-Indirect
Most of the light direct up
- Small portion
of the light directed down
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Distribution: Semi-Indirect
Semi-Indirect
Most of the light direct up
- Small portion
of the light directed down
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Light Fixtures
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Distribution: Semi-Indirect
Semi-Indirect
Most of the light direct up
- Small portion
of the light directed down
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Light Fixtures
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Distribution: Indirect
Indirect
100% of the light directed
up
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Distribution: Indirect
Indirect
100% of the light directed
up
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Light Fixtures
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We Define Light Fixtures by their� Mounting
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Mounting � Surface
Typical Components: • Recessed Junction
Box • Housing
• Back Plate • Lamp and Lamp
Socket • Diffuser or Shielding • Base or Leg for Table
Lamp
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Light Fixtures
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Surface Mounted Ceiling Light Flush Mounts
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General Diffuse
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Light Fixtures
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Wall Sconce / Wall Bracket / Wall Marker Lights Wall Mounts
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Semi-Indirect
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Light Fixtures
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Table Lamps / Floor Lamps Task Lights
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Mounting � Pendant
Typical Components: • Recessed Junction
Box • Housing
• Canopy • Stem • Lamp and Lamp
Socket • Diffuser or Shielding
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Light Fixtures
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Pendants Suspended Lights / Chandelier
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Direct
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Light Fixtures
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Industrial Pendants High Bays / RLM Pendants
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Office Pendants Suspended Linear Pendants
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Light Fixtures
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Mounting � Recessed
Typical Components: • Splice Box • Housing
• Lamp and Lamp Socket
• Aperture Cone • Diffuse or Shielding
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Typical components of a recessed downlight.
Downlights High Hats / Recessed Cans / “Holes in the ceiling”
Square Downlight Round Downlight Adjustable Accent Downlight
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Light Fixtures
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Downlights High Hats / Recessed Cans / “Holes in the ceiling”
Direct
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Semi-recessed Downlights Decorative High Hats
Semi-Direct
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Light Fixtures
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Step Lights Marker Lights / Wall Path Lights
4Recessed Wall Uplights
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In Grade Lights Landscape Uplights / Burial Lights
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Light Fixtures
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Glare
Direct glare from windows and luminaries.
Reflected glare on computer screen from ceiling luminaries.
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Shielding from eye level
ceiling
ceiling
ceiling
35-45 deg
sight line
sight line
ceiling
Downlight Glare Control
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Light Fixtures
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Downlight Shielding
sight line
Lamp placed above ceiling aperture or louver to provide
shielding from normal viewing angles
Direct
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Downlight Reflector
Reflectors around or above the lamp used to increase performance of the fixture
Direct
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Light Fixtures
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Downlight Glare Control
Contour of ceiling aperture or louver to provide Glare
Control from normal viewing angles
sight line
Direct
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Trims Aperture Cones / Aperture Trims
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Light Fixtures
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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
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Reflector
Reflectors around or above the lamp used to increase performance of the fixture
Direct
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Light Fixtures
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Glare Control
sight line
Contour of ceiling aperture or louver to provide Glare
Control from normal viewing angles
Direct
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Troffer
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Light Fixtures
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General or Ambient : Troffer
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Exterior � Pole or Post Mounted
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Light Fixtures
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Exterior
� Building or Ground Mounted
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Exterior � Ground Mounted for Object Lighting
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Light Fixtures
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Fixtures Inside and Out
� Underwriters Laboratory Testing • Dry Applications • Damp Applications • Wet Applications • Wet/Dry Applications • Underwater Applications • Corrosive Applications • Hazardous Applications
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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
