BARTLETT, Tenn. — In most other years, American Paper Optics produces 3D glasses to fulfill orders for theme parks and movie theaters, creating what its top executive calls “optical joy” on ...

A pair of passive 3D glasses that use the circular polarized method from RealD Inc., Beverly Hills, CA. RealD glasses are widely used in theaters for 3D movies, and they can also be used for ...

All right, let's ditch those 3D glasses and check out the newest format to hit theaters, Dolby. Dolby Digital Cinemas, made by Dolby, can be found at AMC theaters. It uses dual 4K laser projectors.