Difference between revisions of "Philips HPI Plus"

Most manufacturers have been releasing lamps for many decades and constantly improved technology so that lamps had a stabler, predictable lifetime and slightly improved colour stability due to manufacturing progress. Lamps produced in the 70s and early 80s are probably not commonly found today. In the 90s and early 2000 Philips was manufacturing lamps in Holland and other countries, while in the last years they were doing the same thing in China. Quality was not severely affected as manufacturing quality was maintained and applications were demanding, used in wealthier countries. It should be noted that there are larger differences between compatible lamps released by Osram, General Electric or other major manufacturers as each of them settled on slightly different chemistry with different reliability and performance.

Products manufactured by Philips were similar to General Electric and Osram, with a quality and consistency much above some East-European manufacturers in terms of colour rendering, light output and life. However, Philips was manufacturing lamps with shorter lifetimes and poorer colour reproduction than typical Osram ones, especially on standard metal hallide lamps, as Philips was focusing on cost and marketing. On the other side, Philips lamps were much more popular and are easier to find.