Illuminated signage comes with its own vocabulary. Knowing a few terms helps you describe what you want and compare options properly.
Channel letters
A channel letter is a hollow letter with a back and sides, called returns. LEDs sit inside the channel. A translucent acrylic face lets the light through, so the whole letter glows.
Pan channel letters
A pan channel letter is built like a shallow tray and usually has an open or solid face, depending on the effect. The term is used in slightly different ways in the trade, so it is always worth looking at a sample or drawing rather than relying on the name alone.
Halo lighting
In a halo-lit letter, the face stays solid and the LEDs shine backwards onto the wall. The letter is mounted slightly off the surface, creating a soft glow around its outline. It suits receptions and premium environments, and it depends on the wall behind it, so lighter, even surfaces give the cleanest result.
Choosing the right option
- Use face-lit letters when reading at night from a distance is most important.
- Use halo lighting for a softer, refined look.
- Combine both where a sign has to work by day and by night.
Whatever you choose, plan power, access and maintenance from the start. Clean, consistent light comes from correct LED spacing and depth, not from adding more LEDs at the end.
