Low Pressure Sodium Lamps Disadvantages

Low pressure sodium lamp is a kind of low pressure sodium vapor discharge tube inner tube with special anti sodium glass blown and can radiate 5890a 5896a sodium line can be used as a monochromatic light source optical polarimeter refractometer polarization instrument in.
Low pressure sodium lamps disadvantages. Lps light provides essentially no color rendition so is inappropriate for any use where 1 color perception is important and 2 lps will be the only light source illuminating the area. Designing with lps see also lps costs low pressure sodium like all lighting types has its own pecularities advantages and disadvantages some of these are discussed in these links. Low pressure lps and high pressure hps these lamps are mostly used for street lighting as well as industrial uses. A sodium vapor lamp is a gas discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm.
The efficacy of low wattage white hps lamps is lower than that of metal halide lamps lumens per watt of low wattage metal halide is 75 85 while white hps is 50 60 lpw. Types of lighting. 4 2 out of 5 stars 20. Low pressure and high pressure low pressure sodium lamps are highly efficient electrical light sources but their yellow light restricts applications to outdoor lighting such as street lamps where they are widely used.
Fluorescent bulbs up types of lighting. Two varieties of such lamps exist. More buying choices 36 95 6 new offers lithonia lighting f70sl 120 m6 70w high pressure sodium micro floodlight with bulb bronze.