A projector lamp is made up of a light bulb inside of a module. The bulb is an advanced piece of technology developed over the last 50 years, providing high brightness, contrast, and is designed to last. There are only 7 companies worldwide manufacturing bulbs, the main one being Philips. The bulb manufacturer's then send the bulbs to the Projector Manufacturers (ie Sony, BenQ, Epson etc...) who put them into a module, creating a "Genuine Lamp".
Unfortuantely the vast majority of online dealers now only sell generic lamps or bulbs, and they sometimes are not overly clear or forthcoming with what the lamp actually is. Generic lamps/bulbs can be cheaper up front but performance is rarely the same as a Genuine. We usually only recommend using a generic lamp if your projector is very old and you don't mind if the lamp doesn't perform the same.
Some of the most common ways a store may describe a generic or copy lamp are below:
Generic lamps will also not arrive in a branded box, they usually come in a plain brown box.
At Just Projector Lamps, we sell the genuine manufacturers' replacement lamps to ensure that your projector operates at its optimum performance levels. We purchase our lamps from the projector brand itself to ensure we are getting the genuine article that performs exactly the way the manufacturer intended.