A roof prism is an optical component used in binoculars and other optical devices to invert and revert images. It consists of two prisms arranged in a specific way, allowing for a compact design while maintaining a straight-line view. This design is essential for producing a right-side-up image, making it popular in high-quality binoculars. The most common types of roof prisms are the Porro prism and the Dach prism. Roof prisms enable a slim profile, making binoculars easier to handle and carry. Their efficiency in light transmission also contributes to clearer and brighter images, enhancing the overall viewing experience.