Blue light is a specific range of wavelengths within the visible light spectrum, typically ranging from approximately 380 to 500 nanometers.

UL Listing is a certification mark provided by Underwriters Laboratories (UL), an independent organization that tests and certifies products for safety and performance.

Room utilization factor is the percentage of actual light that reaches the surface of a room. It is a measure of how effectively the lighting system illuminates the intended area.

A ballast is a small device or control gear that is typically found inside a light fixture which supplies the necessary voltage to start the light and regulate the amount of current flowing to the light.

Preheat, in the context of the lighting industry, refers to the practice of applying a minimal amount of electricity to the filament or fixture of a lamp before fully powering it on.

An enclosed light fixture, also referred to as an enclosed luminaire, is a type of lighting fixture that features a sealed internal cavity where the light bulb or light source is housed.

Focused Light is a type of lighting technique used to highlight particular spots or objects on stage. Unlike wash lights that provide overall illumination, focused lights are directed to draw attention to specific elements of a performance or event.

A mirror reflector is a light-directing system based on reflecting surfaces. It is a type of reflecting surface that is highly polished and typically made in the shape of a parabola.

An SMPS, which stands for Switched-Mode Power Supply, is a type of power supply commonly used in the lighting industry. It is designed to efficiently convert electrical power from one form to another using switching devices like transistors or MOSFETs.

Downlighting is a technique or fixture that is specifically designed to direct illumination downward. This technique is commonly used in outdoor settings and is particularly important in meeting “dark sky” ordinances aimed at controlling light pollution.