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36 Cards in this Set
- Front
- Back
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LED
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- Microchip
- Infrared light - Consumes little power - long life - Good lpw - Small size - Red, green, blue - No IR |
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LED Fixture Details
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- Heat sink
- Driver - LED lamp - Optical Components |
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Discharge Lamps Warm up ...
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- Gradually to produce full light
- "Restrike" time |
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Low-Pressure
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- Fluorescent
- Low-Pressure Sodium |
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High-Pressure
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- HID
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Fluorescent
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- Cold - Cathode
- Hot Cathode - Compact Fluorescent |
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Cold Cathode
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- Thin cylinder
- Long life - Lower efficacy - Excited gas - No phosphors - Instant start lamps - Dimmed easily - Unaffected by # of starts - Decorative |
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Hot Cathode
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- Mercury fluorescent / low pressure mercury
- Light output changes over life - # of starts affects life - Ambient temperature can affect - Higher overall efficacy - Lower cost for illuminance - Relatively low initial cost - Long life - Popular |
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Phosphors
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- Rare Earth
- More money - Better color |
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Ballast
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- Preheat
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Instant Start
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- No starter - strong cathodes
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Rapid Start
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- Longer life than Instant Start
- Single pin - reduces start up time - Dimmable |
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Programmed Start or Programmed Rapid Start
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- Filaments are preheated prior
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T8 - Magnetic Ballasts
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- 80 lpw
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T8 - Electronic Ballasts
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- 105 lpw
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T12 Ordinary Phosphors
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-65-75
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T9 & Circular T5
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- Circular
- Rapid Start |
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Lamp Life Rating
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- Preheat - 7500-9000
- Slimline 7500-12000 - RS 14000-24000 - HO 9000-12000 - VHO 10000-12000 |
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CFL
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- High CRI = 82
- Starter in base - 2700-4100K |
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Flicker
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- Mercury arc
- Peripheral vision |
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Stroboscopic Effect
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- "ghost" images
- Alters perception of movement |
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LPS Lamps - HID
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- Gaseous Discharge
- Parking lots, security, street - Yellow/Amber - High efficacy - Poor CRI |
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LPS
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Low Pressure Sodium
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HPS
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High Pressure Sources
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HPS Include
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HID - MV, MH, Ceramic MH, HPS
- Long life - High lpw - High efficacy |
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Incadescent Low Voltage Sources
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- Transformer
- Fixture - Lamp |
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Gaseous Discharge Sources
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- Ballast
- Fixture - Lamp |
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What affect the distribution of illumination?
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- Shape
- Materials - Location of the aperture - Size of aperture - Mounting position |
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Concentrated Distribution
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- Typically 30 degrees or less
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Diffused
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- Typically 80-120 degrees
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Housings
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- Reflector - Specular, anodized, aluminum
- Shielding |
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High bays
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- Industrial
- HID |
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OLET
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- Organic Light Emitting Transistor
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Track/Cable
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- Monorail
- Cable - Monopoint |
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Functional Wall-Mounted
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- Brackets
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Decorative Wall-Mounted
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- Sconces
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