Westinghouse Lighting - Lamp Catalog

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PHOSPHOR
Coating inside the lamp transforms
ultraviolet radiation into visible
light. Color of light produced
depends on composition
of phosphor.
LAMP
Usually straight
glass tube. May
also be circular
or U-shaped.
BASE
Several di erent types used
to connect the lamp to the
electric circuit and to support
the lamp in the lampholder.
MERCURY
A minute quantity of
mercury is placed in
the lamp to furnish
mercury vapor.
GAS
Usually argon or a
mixture of inert gasses
at low pressure.
STEM PRESS
The lead-in wires have an air
tight seal here and are made of
Dumet wire to assure about the same
coecient of expansion as the glass.
LEAD-IN WIRES
Connect to the base pins
and carry the current to
and from the cathodes
and the mercury arc.
CATHODE
“Hot cathodes” at each end
of lamp are coated with
emissive materials which
emit electrons. Usually made
of coiled-coil or single-coil
tungsten wire.
EXHAUST TUBE
Air is exhausted through this
tube during manufacture
and inert gas introduced
into the lamp.
CATHODE GUARD
For maximum lumen maintenance,
a “cathode guard” surrounds each
electrode to e ectively reduce lamp
darkening and retain a clean
appearance for thousands
of hours.
FLUORESCENT LAMP COMPONENTS
COLOR TEMPERATURE SCALE
LINEAR FLUORESCENT BASE TYPES
LINEAR FLUORESCENT LAMP SHAPES
T5 Shape T8 Shape T12 Shape U-Bent
Shape
T9 Circular
Shape
T9 2C Circular
Shape
Mini BiPin Medium BiPin Single Pin Recessed D.C. 4-Pin GU10q
6500
5500
4500
3500
2500
KELVIN
6000
5000
4000
3000
2000
1500
COLOR
TEMP.
KELVIN
COOL WHITE
(3100K to 4500K)
WARM WHITE
(Up to 3000K)
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DAYLIGHT
(4600K to 6500K)
Kelvin Color
Temperature
Appropriate
Applications
3500K
4100K
6500K
5000K
3000K Commercial/
Hospitality
Light
Commercial
Garage
Commercial
Commercial
Industrial
Institutional
Commercial
Industrial
Institutional
LINEAR FLUORESCENT LAMPS