When did Roy Lictenstein become famous?

Roy Lichtenstein became famous in the early 1960s, particularly with the release of his iconic works that utilized the visual techniques of comic strips and commercial art. His painting "Whaam!" in 1963, which features bold colors and Ben-Day dots, helped establish him as a leading figure in the Pop Art movement. Lichtenstein's unique approach and style garnered significant attention, leading to widespread recognition and acclaim in the art world.