Interior lighting is crucial to the overall transmission and functional comfort of any room. The decisions about lighting in this respect are unlimited because of the wide variety of offered lighting fixtures in comparison to previous years. Lighting bodies at any home are used for both functional and decorative purposes. That is why their design is very important. More powerful lighting should be used in rooms with high ceilings or in rooms where the walls and ceilings are painted in dark colors. Good lighting is required in areas where people are operating and their work requires better lighting and increased visual activity. Desktop lamps are used for illuminating specific working places. In cases when tables or desks do not have enough space, the lights can be mounted on the wall. Wall lighting is used mainly in stairways, corridors, and service-places for further illumination of specific areas or where the ceiling lighting is inappropriate. For decorative lighting for kitchen cabinets, ceilings of wardrobes or paintings is used mainly primarily aimed halogen lighting in most cases with low-voltage power supply of 12V. There are some specific requirements and recommendations for the bath lightning. Due to the increased moisture, the lighting in these areas should be moisture-resistant and resistant to any sudden changes of temperature and humidity as well. It is recommended to have additional lighting around the mirror and sink, possibly on both sides of the mirror in order to avoid the shadows on the face.
Except convenience, the outdoor security lighting provides also security and safety. For better energy efficiency and exterior stair lighting can be controlled by timer, digital clock, photocell or motion sensor. For lighting of trees, monuments and fountains, lighting fixtures are placed low and they usually are pointed up to the object. The modern lighting fixtures are using variety of light sources - from incandescent bulbs to fluorescent and halogen lamps and LEDs. The main indicators of light bodies are the electrical power measured in watts (W) and measuring light intensity in lumens. A 100 watt incandescent bulb produces light with intensity of 1600 lumens. The modernization of home interior LED interior lighting is relatively easy and affordable solution. Modern LED lighting has many advantages over conventional lights. This type of lighting does not require regular maintenance due to the long LED life of approximately 30-40 years. All LEDs are supplied with low voltage for human safety. They are low cost and stable plastic housing in comparison with the glass housing of the normal / ordinary lighting. LEDs are highly efficient light sources, turning 90% of their energy to light, while ordinary light bulbs ratio is only 10% light and 90% heat. LEDs are semiconductors, light emitting (LED - light-emitting diodes) in the visible or invisible light spectrum. In home decor emitting diodes are now used in the visible spectrum of light. LED lighting is powered by lowering voltage or adapter, or batteries. The LED light can be in different colors depending on the elements and compounds that are used for its producing. There are also LEDs that can emit different colors of light depending on the polarity, size or frequency of the supply voltage. The most commonly used for the interior LEDs emit green, red, green, yellow and blue light.