What is the difference between front projection and rear projection?

Front projection places the projector on the same side as the audience, and the screen reflects light back toward the viewers. Rear projection places the projector behind the screen, and the screen material transmits light through to the audience side with some diffusion.

The choice usually comes down to physical space. Rear projection requires depth behind the screen for the projector's throw distance, but it hides the projector from the audience and eliminates the risk of people walking through the beam. Front projection requires no backstage depth but needs a clear throw path from projector to screen.

Some screens are marketed as dual-purpose (usable for both front and rear projection), but the front projection performance on a dual surface is typically weaker than a purpose-built front screen.

Read more about projectors in our Comprehensive Guide to Projectors article.