Stressed mirror polishing. 2: Fabrication of an off-axis section of a paraboloid

Stressed mirror polishing. 2: Fabrication of an off-axis section of a paraboloid

A mirror has been fabricated with the shape of an off-axis section of a paraboloid by grinding and polishing a sphere into a prestressed blank. The applied stresses were then removed allowing the mirror to spring into the desired paraboloidal shape. The 36-cm diam off-axis section deviated 9.9-micro...

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Veröffentlicht in:Appl. Opt.; (United States) 1980-07, Vol.19 (14), p.2341-2352
Hauptverfasser: Nelson, J E, Gabor, G, Hunt, L K, Lubliner, J, Mast, T S
Format: Artikel
Sprache:eng
Schlagworte:
420100 - Engineering- General Engineering- (-1987)
CONFIGURATION
DEFORMATION
ENGINEERING
FABRICATION
INTERFEROMETRY
MIRRORS
PARABOLAS
POLISHING
SHAPE
STRESSES
SURFACE FINISHING
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Beschreibung
Zusammenfassung:A mirror has been fabricated with the shape of an off-axis section of a paraboloid by grinding and polishing a sphere into a prestressed blank. The applied stresses were then removed allowing the mirror to spring into the desired paraboloidal shape. The 36-cm diam off-axis section deviated 9.9-microm rms from the polished sphere. The final surface deviated 0.03-microm rms from the desired off-axis section.
ISSN:1559-128X
0003-6935
1539-4522
DOI:10.1364/ao.19.002341