Lamps are made up of two parts  the bulb and the bulb holder. Optoma genuine lamps are designed specifically and uniquely for Optoma projectors. Counterfeit lamps may contain differences that could affect the performance of your projector.&lt;br /&gt;&lt;br /&gt;Installing a counterfeit lamp into an Optoma projector may damage the projector which would void your projector&#39;s warranty. Repairs resulting from damage caused by a counterfeit lamp would not be covered under the warranty.&lt;br /&gt;&lt;br /&gt;Counterfeit lamps may lead to reduced performance and reduced life expectancy of your projector.