Diamond Lamp For OPTOMA BR323 BR3c26 X312 S310E W312 VDHDNL BL-FP190D Projectors Diamond Lamps has a unique set of agreements to buy directly from the four leading original lamp manufacturers: Philips, Osram, Ushio and Phoenix. These companies are able to produce lamps to the necessary performance, reliability and longevity standards required by all the projector brands. Between them they hold many patents for the lamp technologies involved. Diamond lamps are assembled into very high quality cages made precisely to fit correctly into the relevant projectors, simply and safely. All Diamond Lamp modules are tested with the projectors before they are released for sale.