http://www.loft.optics.arizona.edu/documents/journal_articles/RIFTA_Tianyi_ScientificReport_2024.pdf WebThe Technology of Ion Beam Figuring. Ion beam figuring (IBF) is an etching process under high vacuum conditions especially for optical substrates, like telescope mirrors. A small beam of positive charged ions is used to physically etch material from a substrate. It is also often referred to as ion beam polishing or ion beam finishing, as it is ...

Figuring Method of High Convergence Ratio for Pulsed Ion …

Web摘要：Ion beam figuring (IBF) is established for the final precision figuring of high-performance optical components, where the figuring accuracy is guaranteed by the stability of the removal function and the solution accuracy of the dwell time. In this deterministic method, the figuring process can be represented by a two-dimensional (2D ... WebThe simulations show that a perfect dwell time solution could be obtained by the revised matrix equation and initial surface error map extension with the help of the least squares … portsmouth va robbery

Ion Beam Figuring - scia Systems GmbH

WebMar 1, 2016 · In contrast to the dwell time algorithm in the conventional IBF, the variable-spot IBF adopts a new algorithm, which consists of the scan path programming and the trajectory optimization using pattern search. ... Algorithm for ion beam figuring of low-gradient mirrors. Appl. Opt., 48 (21) (2009), p. 4090, 10.1364/AO.48.004090. View in … WebJun 1, 2007 · To determine the dwell time is an important problem in ion beam figuring. Usually, the ion beam figuring process can be described by a two-dimensional … Webdi˛raction limit. Ion Beam Figuring (IBF), as a highly deterministic surfacing technique, has been used for ultra-precision ˞nishing of mirrors. One crucial step that guides the IBF process is dwell time calculation. A valid dwell time solution should be non-negative and duplicate the shape of the desired removal map. portsmouth va recycling schedule 2022