Luminous efficacy measures the efficiency of a light source in converting electrical power into visible light. It is defined as the ratio of luminous flux, which represents the total amount of visible light emitted by the light source, to the electrical power consumed by the light source.

An E27 bulb, also known as an Edison bulb with a big screw socket, is a type of light bulb commonly found in residential and commercial settings.

Tungsten light, also known as tungsten incandescent light or tungsten filament light, is a type of artificial lighting commonly used in various applications, including photography.

UL label is a certification mark issued by Underwriters Laboratories (UL) to indicate that a product, particularly in the lighting industry, has undergone rigorous testing and meets specific safety requirements.

A 4-way light switch is a specialized switch used to control a light or a group of lights from three or more locations.

Bias lighting, also known as TV backlighting or LED strip lights for TV, is a lighting technique by placing LED lights behind a television or computer monitor to illuminate the area around the display.

Candlepower distribution curve is a graphical representation that illustrates how the intensity of light is distributed from a lamp or light fixture.

Daylight harvesting is an advanced technique used in sustainable lighting designs for modern buildings. It automatically adjusts the brightness or dims artificial lights in response to the amount of natural light available in a space.

A bi-pin base refers to a specific type of base used in lamps or bulbs. Unlike the traditional screw-in base, a bi-pin base is characterized by having two pins that are designed to fit into corresponding slots or connectors in the fixture, establishing electrical contact.

A Chips on Board (COB) LED Module is a technology that involves packaging multiple LED chips together as a single lighting module.