Los Angeles-based RealD, a provider of 3D movie projection technology, has inked a deal to expand the firm's screens in Mexico, Central America, and South America. RealD said Thursday that it has tied in with Cinepolis, Inc., which the firm describes as the world's fifth largest cinema exhibitor. The deal includes 500 screens, with a rollout in progress, continuing through 2010. Financial aspects of the deal were not disclosed. Cinepolis has more than 1,800 screens in 201 theaters