One of the most common lamps for many different applications like stage and
studio and projectors are the EPR projector lamps.
These are made with a special shape which resembles and old TV tube with an
unusual base. Because visual communication
is important and stage lighting has special needs, these lamps will probably be
used long into the future. There are a variety of stage equipment
and projectors which
use the EPR lamp, and they have a similar task which is to illuminate. In fact, some companies who make
lighting equipment have exchanged bulb types for greater light output while trying to
get better bulb life. The main purpose for a bulb like
this is creates a lot of light in a small space allowing for greater lighting
The brightness, as most people call it, needs to be adequate for dramatic
presentations as well as simple overhead presentation viewing.
All of the EPR lamps regardless of the brand, have the same shape.
That's one of the reasons they're not interchangeable with other types of
projection lamps. Almost always, the
voltages of projection lamps are different and the lumen output as well. The EPR
projector lamps are 500 watts and 120 volt. In regards to
the shape, the EPR is very unique. The base will almost certainly not fit
in any other kind of socket. This lamp is very specific for the
application it's used in, so don't go looking for a replacement of some other
type, simply replace it with another EPR. Another thing to remember, because
these have a high light output, that usually means they have a
much shorter life. The life is shorter, the rating is only 50 hours, so
it's good to turn off the lamp when it's not in use. Every instance of
time you don't have it on means the lamp will last longer. Another caution is
that these bulbs should not be touched with your skin. The skin oils can react
with the glass and there can be some reactions which will shorten the lamp life.
Another thing to keep in mind when replacing these is that they are
identified by a 3 letter code on the bulb itself. You'll see it somewhere
on the back or the top if it's more like a bulb as opposed to a reflector type
lamp. Sometimes you'll see a code such as EPR as described here or another
type with the letters ENX, FXL,
DAY, DYP, EVD, EVW or
something similar to that. The ANSI 3 letter code identifies that bulb as to the
shape, wattage, voltage and any other standard information. Unlike other
types of bulbs, these have some standards across various manufacturers, the only
thing that varies is quality. We have two of the best manufacturers of all
types which are Sylvania and Eiko.
In summary, EPR lamps are used specifically for stage and studio light
fixtures and overhead projectors they
are made to operate with. Of course, you will need
projectors that will have the correct voltage and socket
for these projector bulbs. Whatever type of projection lamp you have, you
can get what you need from eLightBulbs. We have a large inventory
of projector bulbs for nearly every type of lighting application in the field. If
you need help identifying a projector bulb, our customer service
representatives can help you determine what you have.