ABSTRACT
This chapter provides a description of lighting systems, their characteristics, and retrofit options. Poorly sealed gaskets allow insects to clog the lenses of outdoor lighting fixtures. Light emitting diode (LED) lighting differs from incandescent and compact fluorescent lighting in several ways. When designed well, LED lighting can be more efficient, durable, versatile and longer lasting. LED lighting products use light emitting diodes to produce light very efficiently. Some LED light fixtures may have LEDs built-in as a permanent light source. However, it also means that sophisticated engineering is needed to produce an LED light bulb that shines light all around like an incandescent A-shape bulb. The ability to be dimmed and the color control are other benefits of LED lights. Since directional lighting reduces the need for reflectors and diffusers that can trap light, well-designed LED fixtures can deliver light efficiently to the intended location.
