ESCO, which stands for Energy Service Company, is a specialized entity within the lighting industry that focuses on providing comprehensive energy efficiency services and solutions to customers.

The cut off angle of a luminaire is the angle at which the light emitted from a luminaire is directed and controlled.

Direct glare is a visual sensation caused by excessive and uncontrolled brightness in one’s field of view. It occurs when there is a significant contrast in brightness between different objects, resulting in a strong glare that can impede a person’s ability to perceive details and objects clearly.

In the lighting industry, the term “Gu” refers to a specific type of bulb base used for various lighting fixtures. The “G” in Gu stands for “multiple pins as a connector,” indicating that the bulb has more than one pin for connecting to the socket.

“Long Life” in the lighting industry refers to the extended lifespan of LED light fixtures compared to traditional incandescent bulbs. LED light fixtures have been tested to last as long as 100,000 hours, which is significantly longer than the approximately 1,000 hours of lifespan for incandescent bulbs.

The International Dark-Sky Association (IDA) is a non-profit organization that focuses on preserving and protecting the nighttime environment by reducing light pollution.

Lamp voltage is the specific electrical voltage required to power a lamp or light fixture. Lamps can operate at different voltages depending on their design and intended use.

Discomfort glare is the visual discomfort experienced when individuals are exposed to light sources or luminaires that have a higher luminance than their eyes can adapt to.

NEMA, which stands for the National Electrical Manufacturers Association, is a prominent trade association founded in 1926 that represents electrical manufacturers in the United States.

Quantity of light refers to the measurement and evaluation of the amount of light emitted by a lamp or lighting system.