Theatrical lenses are specialized optical devices used in stage productions to enhance visual storytelling. They help project images, create effects, and manipulate light, allowing designers to achieve specific moods and atmospheres. These lenses can vary in shape and size, influencing how light is focused and dispersed on stage. In theater, different types of lenses, such as fresnel and ellipsoidal, serve distinct purposes. Fresnel lenses provide soft, diffused light, ideal for general illumination, while ellipsoidal lenses offer sharp, focused beams for highlighting specific areas or creating dramatic effects. Together, they contribute to the overall visual experience of a performance.