Tuning the resolution and depth of field of a lens using an adjustable ring beam illumination.
Sign Up to like & getrecommendations! Published in 2020 at "Applied optics"
DOI: 10.1364/ao.389353
Abstract: A pair of axicons with an adjustable separation between them is used to generate a variable diameter ring beam with high efficiency. This beam illuminates a lens to produce quasi-diffraction-free beams with a tunable spot… read more here.
Keywords: ring beam; depth field; tuning resolution; resolution depth ... See more keywords