A Review of Lightweight Design for Space Mirror Core Structure: Tradition and Future

With the continuous improvement of imaging quality requirement space optical system, large-aperture mirror becomes research focus. However, increase aperture will whole weight which results in high launch cost and degrades surface figure accuracy. Therefore, lightweight design method structure is great importance. In recent years, many telescope system schemes have demonstrated progress structural mirrors, such as Spitzer, SOFIA, JWST, etc. This article reviews main content innovations on designs mirrors including conventional machining topology optimization structures. Meanwhile, some emerging (e.g., lattices Voronoi structures) considering additive manufacturing (AM) are also introduced. Several key elements different approaches for discussed compared, material, ratio, methods, figure, Finally, future challenges, trends, prospects discussed. provides a reference further related engineering applications.