Giant-screen exhibitor Imax Corp. announced one of its founders, William Shaw, passed away Saturday, Aug. 31 in a Toronto hospital from complications following a heart attack.

An engineer by training, Shaw developed the Imax projection system in 1968 with partners Graeme Ferguson, Roman Kroitor and Robert Kerr. A statement from Imax co-CEOs Rich Gelfond and Brad Wechsler paid tribute to Shaw for his intellect, good humor and friendship.

The Imax Theatre Network currently consists of more than 220 Imax-affiliated theatres in 30 countries (60% in North America), including more than 100 theatres equipped with Imax 3D technology.