Point light source imaging by a three-dimensional long-imaging-depth lens
| Autor: | Yan Zhang, Xinke Wang, Wenfeng Sun, Jiasheng Ye, Li-Feng Zhang, Shengfei Feng |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Physics
Simple lens genetic structures business.industry Lens speed Surface finish eye diseases Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention body regions Lens (optics) Wavelength Transverse plane Optics law sense organs Cylindrical lens Electrical and Electronic Engineering Physical and Theoretical Chemistry business Fresnel diffraction |
| Zdroj: | Optics Communications. 347:141-146 |
| ISSN: | 0030-4018 |
| DOI: | 10.1016/j.optcom.2015.02.042 |
| Popis: | Based on Fermat's principle, we have designed a three-dimensional long-imaging-depth (LID) lens for point light source imaging. The thickness function of the designed LID lens is given analytically. Imaging properties of the designed LID lens are simulated by the Fresnel diffraction integral method. Numerical simulations demonstrate that the designed LID lens has gained a much longer imaging depth in the axial direction, in comparison with the conventional lens. In addition, compared with the conventional lens, the transverse imaging spot size and the imaging efficiency of the designed LID lens have exhibited weaker reliance on the longitudinal position within the LID region. Finally, the wavelength tolerance and roughness tolerance properties of the designed LID lens are disclosed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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