High Pressure Mercury Vapor Lamps Are Generally Used In

The mercury vapor fluorescent lamps can be either of low pressure lp or medium pressure mp i e gas pressure inside the lamp with nominal power that may vary in the ranges 4 115 w and 400 17 000 w philips 2017 respectively.

High pressure mercury vapor lamps are generally used in.

1901 the first commercial mercury vapor lamp peter cooper hewitt new york city had a history of innovations in other fields and when he set about on the project of the mercury vapor lamp in 1898 it only took 3 years to develop the first reliable lamp with a acceptable color of light. Most models produce a bluish white light. Are mercury lamps still legal existing mercury lamp systems should always be considered for retrofit with other high efficiency alternatives unless they operate very few hours a year and or the. The uv irradiation power can be as high as approximately 30 of the nominal power.

In either case the outer bulb provides thermal insulation protection from the ultraviolet radiation the. The outer bulb may be clear or coated with a phosphor. Ultra high pressure mercury vapor lamps are used in the area of photolithography to expose various photoresists. The advantage is that it produces a bright white light with relatively long life.

Mercury vapor lamps are gas discharge lamps that uses an electric arc through vaporized mercury to produce light. As we reviewed in our earlier blog. Standard mercury vapor lamps are generally used to overcome problems with fluorescent lamps for outdoor use.