Kupka, Frank or František, 1871-1957, Czech painter, etcher, and illustrator. Kupka illustrated works by Reclus and Leconte de Lisle and an edition of Aristophanes' Lysistrata. In 1911 he joined the orphism movement led by Delaunay. He was one of the first painters to explore pure geometric abstraction. His decorative style was affected by the "machine esthetic" of the 1920s. Kupka is well represented in the Musée national d'Art moderne, Paris, and in the National Gallery, Prague.