Contrast transfer characteristics of the light sword optical element designed for presbyopia compensations
Krzysztof Petelczyc , S. Bará , A. Ciro López , Z. Jaroszewicz , K. Kakarenko , Andrzej Kołodziejczyk , Maciej Sypek
AbstractThe paper discusses the abilities of the light sword optical element (LSOE) for presbyopia compensation. The imaging properties are analyzed by means of the modulation transfer functions and output images of the star resolution test. All numerical calculations are performed assuming an optical set-up simulating the presbyopic human eye with 3 mm pupil acting on-axis and based on the Gullstrand model. In order to have a meaningful comparison we expand our study and present adequate analysis for other elements potentially useful in ophthalmology as reading glasses, bifocal lenses and axicons. According to the obtained results the LSOE can successfully realize vision with an extended depth of field. Under assumed conditions the element makes possible the compensation of an assumed defocus up to 4 dioptres. The output images formed by the LSOE are well recognizable and have acceptable qualities for near as well as far object distances.
|Journal series||Journal of the European Optical Society-Rapid Publications, ISSN 1990-2573|
|Keywords in English||Axicons; Bifocal lens; Contrast transfer; Defocus; Extended depth of field; Human eye; Imaging properties; Light sword optical elements; Numerical calculation; Object distance; Optical set-up; Presbyopia; Resolution tests, Diffraction; Image processing; Vision, Diffractive optics|
|Publication indicators||: 2011 = 1.019 (2) - 2011=1.124 (5)|
|Citation count*||0 (2013-01-30)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.