CinemaScope is a cinematographic technique which used an anamorphic lens to produce widescreen pictures. Crucially, these could be shown in theatres using existing equipment (and an adapter). CinemaScope pictures were produced from 1953 to 1967, and less often after.
When 20th Century Fox began using CinemaScope this marked the beginning of the modern anamorphic format in 2.55:1, almost twice as wide as the previously common Academy format's 1.37:1 ratio. Although the technology behind the CinemaScope lens system was made obsolete by later developments, primarily advanced by Panavision, CinemaScope's anamorphic format has continued to this day. In film-industry jargon, the shortened form, 'Scope, is still widely used by both filmmakers and projectionists, although today it generally refers to any 2.35:1, 2.39:1, 2.40:1, or 2.55:1 presentation or, sometimes, the use of anamorphic lensing or projection in general. Bausch & Lomb won a 1954 Oscar for its development of the CinemaScope lens.