TLD LOW-PRESSURE GAS DISCHARGE LAMP

摘要

The invention relates to a low-pressure mercury vapor discharge lamp (2,4)having a first vessel (6) enclosing a discharge space, and a second vessel surrounding the first vessel. The second vessel (22) comprises a polymer material, or the second vessel (16) comprises a glass material and is at least partially coated with an infrared-reflective material (18) on the side facing the first vessel. A stagnant layer of gas is created between the first and the second vessel, reducing the heat transfer from the discharge space to the surrounding area of the lamp. As a result, the light output is improved at relatively low ambient temperatures.