Lamps for pools can be used in two ways: general light, otherwise referred to as the upper source of light, or an underwater lighting system. Water is a wonderful material for experimenting with all sorts of lights due to its reflective nature. Lights which reaches the surface of the water is reflected and does not go into the deep, a rule known to every school kid. Try a little experiment, if a ray of light is beamed from underneath the water the surrounding area will be lit up by all sorts of new colors and shapes. The view created by this is astounding! Therefore the outside lighting of the pool will carry a strictly functional role, and underwater illumination will add to the aesthetics. The two types of lighting, underwater and above water typically use different technologies. Above water lights typically use halogen bulbs with high intensity output. A couple of these devices light up a significant area of the pool and the surrounding area. As practice shows these lights are usually used for public pools where the main objective is to ensure the safety of the patrons. On private residences diodes are more commonly used which work the entire night. This type of light has enough output, but is also less demanding energy wise and is quite beautiful if implemented correctly.
Oftentimes, after the final installation of accessories there is a feeling that something is missing. This is often corrected by special lamps, abilities of which include illumination of the pool through the entire mass of water. Devices like these are made from modern damage-resistant plastic or corrosion resistant stainless metals. Tempered glass is sometimes used in production of the lights in order to safeguard it from mechanical damage during accidental hits from the swimmers and water pressure.