One of the most common lamps for many different brands of machines, projectors and viewing equipment are the DJL projector lamps.  These are made with a special shape which has an integral reflector and an unusual base.  Although the needs of computer presentation has increased more and more, there are still many applications of overhead projectors in service daily.  Because visual communication is important, it makes it a popular lamp for the coming years.  There are a wide variety equipment and projectors which use the DJL lamp, and they have a similar task which is to illuminate.  In fact, some companies who make these projectors have exchanged bulb types for greater light output while trying to get better bulb life.  The main purpose for a bulb like this is the light it puts on a screen, how well it fills out the screen space.  The brightness, as most people call it, needs to be enough to gain good contrasts of objects, writing or overhead transparencies.

All of the DJL projector lamps regardless of the brand, have the same shape, and sometimes the exact same shape of another lamp which might have a different voltage or wattage.  That's one of the reasons they're not interchangeable.  Almost always, the voltages of projection lamps are different and the lumen output as well.  The DJL projector lamps are 150 watts and 120 volt.  In regards to the shape, the DJL 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 DJL.  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 15 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 DJL as described here or another type with the letters ENX, FXL, DAY, DYS, EVD, ELH 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, DJL lamps are used specifically for the machine, overhead or slide projectors they are made to operate with.  Of course, you will need projectors that will have the correct voltage and socket for the projector bulbs.  Whatever type of projection lamp you have, you can get what you need from Service Lighting.  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.