Good news! Could be a gamechanger!
"... For the new study, scientists from the Photonics, Numerical and Nanosciences Laboratory (LP2N) in France have developed a new type of lens, which they call a “spiral diopter.” As the name suggests, this lens has a spiral shape, which creates three different focal points in the field of vision.
“Unlike existing multifocal lenses, our lens performs well under a wide range of light conditions and maintains multifocality regardless of the size of the pupil,” ... “For potential implant users or people with age-related farsightedness, it could provide consistently clear vision, potentially revolutionizing ophthalmology.” ..."
From the abstract:
"Lens design is of paramount importance in the evolving world of technology, where compactness and high optical performance are a necessity, ranging from smartphones and wearable devices to vehicles and virtual reality. Freeform design techniques allow us to transcend traditional limitations, but creating new optics remains a substantial challenge unless we consider unconventional physical phenomena. Here, we introduce a lens type based on freeform design, employing spiralization of one of its diopters that results in optical vortices. This enables multifocality, primarily serving needs in ophthalmology; however, its potential applications could broadly impact many other domains. In particular, this lens design could be crucial in miniaturizing emerging technologies while retaining their optical quality."
Fig. 1. Comparison between (a) a conventional astigmatic lens and (b) our spiral lens. For each lens a ray tracing representation is given as well as a representation of the PSF in each expected focal zone.
No comments:
Post a Comment