Oblique astigmatism and field curvature measured with light-field imaging
| Autor: | Eduardo J. Nunes-Pereira, Marco A. Sousa, Moisés. A. S. Duarte, Boris P. J. Bret, Flávio P. Ferreira |
|---|---|
| Přispěvatelé: | Universidade do Minho |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
Science & Technology business.industry Ciências Naturais::Ciências Físicas Ciências Físicas [Ciências Naturais] Astigmatism 01 natural sciences Atomic and Molecular Physics and Optics Sagittal plane law.invention 010309 optics Lens (optics) medicine.anatomical_structure Optics Virtual image Depth map law 0103 physical sciences Digital image processing medicine Augmented reality Electrical and Electronic Engineering business Engineering (miscellaneous) Petzval field curvature |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| Popis: | The testing of astigmatism and field curvature of an optical system with light-field imaging is proposed. The method consists in measuring the depth map, obtained with a plenoptic camera, of the image of a test pattern formed by the optical system. To demonstrate the accuracy of the method, the virtual image formed by a piano-convex lens was tested. The resulting depth map was compared with the sagittal and tangential foci distances calculated with the Coddington theory. The proposed method could be applied to the quality testing of ocular optics, including eyeglasses, eyepieces, virtual reality goggles, and augmented reality devices. (C) 2020 Optical Society of America Programa Operacional Tematico Factores de Competitividade (POCI-01-0247-FEDER-002797). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|