Active Optics—Progress in Modeling of Tulip-like Variable Curvature Mirrors - Aix-Marseille Université Access content directly
Journal Articles Optics Year : 2023

Active Optics—Progress in Modeling of Tulip-like Variable Curvature Mirrors

Abstract

We present new results obtained from the modeling of a tulip-like variable curvature mirror (VCM) in the case of a central force that reacts to its contour. From Nastran finite element analysis, we shows that 3-D optimizations, using non-linear static flexural option, with an appropriate solution sequence, provide an accurate tulip-like VCM thickness distribution. This allows us to take into account boundary conditions, including the thin outer collarette and its link to a rigid ring. Modeling with a quenched stainless steel chromium substrate provides diffraction-limited optical surfaces. Rayleigh’s quarter-wave criterion is performed over a zoom range from flat up to f/3.5 convexity over a 13 mm clear aperture and 10 daN central force. The optical testing results of a prototype tulip-like VCM elaborated from the previous analytic theory, show quasi-diffraction-limited figures for a zoom range up to f/5. The present modeling results should significantly help in the future construction of such VCMs with a zoom range extended up to f/3.5.
Fichier principal
Vignette du fichier
optics-04-00004.pdf (11.93 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive
Licence : CC BY - Attribution

Dates and versions

hal-03956444 , version 1 (26-01-2023)

Licence

Attribution

Identifiers

Cite

Gerard Lemaitre, Pascal Vola, Patrick Lanzoni. Active Optics—Progress in Modeling of Tulip-like Variable Curvature Mirrors. Optics, 2023, Optics, 4 (1), pp.39-54. ⟨10.3390/opt4010004⟩. ⟨hal-03956444⟩
54 View
27 Download

Altmetric

Share

Gmail Facebook X LinkedIn More