Figure metrology of deep general aspherics using a conventional interferometer with CGH null

Autor:	Steven M. Arnold, Robert C. Yoder, L. Curt Maxey, JoEllen Rogers
Rok vydání:	1995
Předmět:	Wavefront Engineering Paraboloid Interferometry Optics Null (radio) business.industry Astronomical interferometer Test method business Twyman–Green interferometer Metrology
Zdroj:	Optical Manufacturing and Testing.
ISSN:	0277-786X
DOI:	10.1117/12.218413
Popis:	We present a simple and general method of aspheric figure metrology using a CGH null mounted in the test beam of a conventional Fizeau or Twyman-Green interferometer. A 'standard' reflective CGH is used to establish optical alignment with respect to the interferometer's spherical test beam. This alignment is then mechanically trnaferred to a custom CGH null. The accuaracy of the alignment transfer is readily verified. The test method has been modeled by raytracing and verified experimentally by testing a perforated 8 inch F/1.5 on-axis paraboloid and a 50 mm off-axis paraboloid from their centers of curvature.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::13f030ef326d3c1e2893aea96f1a23f1 https://doi.org/10.1117/12.218413 Zobrazit plný text záznamu