| Autor: |
Sergei A. Dimakov, Boris V. Kislitsyn |
| Rok vydání: |
2000 |
| Předmět: |
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| Zdroj: |
Diffractive/Holographic Technologies and Spatial Light Modulators VII. |
| ISSN: |
0277-786X |
| DOI: |
10.1117/12.379363 |
| Popis: |
During some last years an interest has grown in usage of membrane elastic primary mirrors in both beam-projecting and imaging telescopes comprising a nonlinear-optical correction system. Theoretical and experimental studies of these mirrors based on a plane membrane uniform in thickness, at pressure applied along the normal to its surface and tension applied at its edges, have shown that aberrations of such a mirror (with aperture approximately 3 m and relative aperture approximately 1:2) are in the visible wavelength range too large to be compensated with the use of the existent correction systems. In this paper it is proposed for improvement of optical quality of the mirror surface to employ either a plane- membrane mirror variable in thickness or a mirror based on an initial-surface-profile membrane. The presented numerical results of calculation of both the mirror shape and the range of aberration parameters for these mirrors show that aberrations available prove to be lower in magnitude than those of the required level. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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