Segmented aperture is a research area in the field of optics and telescopes that focuses on breaking up the aperture (opening) of optical instruments into smaller segments, rather than using a single, large aperture. This approach has several advantages, such as improving the overall resolution and reducing the cost and weight of the instrument. By combining the light collected by multiple smaller apertures, segmented aperture systems can achieve high-resolution imaging and observation of distant objects in space. This research area is particularly relevant for space telescopes and other astronomical instruments where size, weight, and cost are important factors.