Interferometric testing of steep cylindrical surfaces with on-axis CGHs
| Autor: | Jean-Michel Asfour, Ruslan K. Nasyrov, Alexander G. Poleshchuk |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
business.industry 0211 other engineering and technologies Physics::Optics 02 engineering and technology 01 natural sciences Atomic and Molecular Physics and Optics Computer Science Applications diffractive optical elements computer-generated hologram (CGH) laser writing methods for DOE fabrication cylinder metrology surface testing 010309 optics Interferometry Optics 021105 building & construction 0103 physical sciences Electrical and Electronic Engineering business |
| Zdroj: | Computer Optics. 40:625-628 |
| ISSN: | 2412-6179 0134-2452 |
| DOI: | 10.18287/2412-6179-2016-40-5-625-628 |
| Popis: | We present a new approach for testing cylindrical optical surfaces using a Null-test. We suggest using a Computer Generated Hologram (CGH) in combination with a Transmission Sphere. It is shown that in such an optical layout the period of the diffractive structure is larger than in the case of a conventional scheme using a collimated beam. Therefore, this kind of hologram enables the test of cylinder surfaces with higher numerical apertures. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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