Headlamp Diagram: Understand the Parts and How They Work

Most designs have a light housing, LEDs, controls, a power source and an adjustable headband. Some use a top strap or separate battery compartment.

A red LED provides close-range illumination while helping preserve dark adaptation for many users. Its usefulness depends on the task and available settings.

A flood beam spreads light across a nearby area, while a spot beam concentrates it farther ahead. Many headlamps offer both patterns or a blended setting.

It is usually inside or behind the front housing. Some designs place it in a separate rear compartment connected by a cable.