Bredvinkeloptikk

Bredvinkeloptikk refers to optical systems designed to capture or project a broad field of view. The term encompasses a range of lenses and imaging approaches used in photography, cinematography, surveillance, robotics, and scientific instrumentation. The central goal is to minimize the need to move the camera while still recording a scene that is wide, or even surrounding, in extent.

Most bredvinkeloptikk relies on short focal lengths relative to the sensor size. Wide-angle lenses can be rectilinear, which preserves straight lines, or fisheye, which uses curved projection and produces noticeable distortion but yields an almost hemispherical view. The field of view is related to focal length and sensor dimensions, so the same lens behaves differently on different formats.

Optical design challenges include distortion, vignetting, and aberrations such as coma and chromatic aberration. Advanced elements (aspherical and low-dispersion glass), coatings, and precise assembly help reduce these effects. Digital post-processing or opto-mechanical corrections are often used to correct distortion or to de-warp panoramic images.

Applications include landscape and architectural photography, interior imaging, aerial and automotive surveillance, machine vision for robotics, and panoramic or 360-degree imaging. In cinema, bredvinkeloptikk enables dynamic spatial coverage and creative compositions, while in scientific instruments it aids wide-area observation, such as astronomy or environmental monitoring.

Contemporary trends combine optical design with computational photography to extend effective field of view and correct distortions in real time. 360-degree cameras and multi-camera rigs increasingly rely on bredvinkeloptikk concepts to capture immersive visuals.