LED lamp is different from the traditional light source to

Unlike other light sources, LED will not be visible in energy is directly converted into visible light radiation and does not produce heat or other forms, such as ultraviolet light. The light radiation angle of the traditional light source or even more than 360 ˚. The light irradiation range of LED is a fixed arc. The use of LED in some facilities and light design needs to be fixed, it is an advantage to the light source and now many challenges.