Adaptive Spiral Diffractive Lenses—Lenses With a Twist

Adaptive Spiral Diffractive Lenses—Lenses With a Twist

A new concept of thin, flat, transparent variable lenses with unprecedented performance in terms of active diameter and focal distance range is presented. The diffractive lens consists of two cascaded variable liquid crystal‐based spiral diffractive lenses. Changing concertedly the topological charg...

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Veröffentlicht in:Advanced optical materials 2020-12, Vol.8 (23), p.n/a
Hauptverfasser: Geday, Morten Andreas, Caño‐García, Manuel, Otón, José Manuel, Quintana, Xabier
Format: Artikel
Sprache:eng
Schlagworte:
adaptive optics
diffractive optics
flat lens
Lenses
Liquid crystals
Materials science
optical angular momentum
Optics
Space applications
variable lens
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Zusammenfassung:A new concept of thin, flat, transparent variable lenses with unprecedented performance in terms of active diameter and focal distance range is presented. The diffractive lens consists of two cascaded variable liquid crystal‐based spiral diffractive lenses. Changing concertedly the topological charge changes the focal length with no mechanical motion. The implemented lens has a focal range from –2 to +2 diopters, an active diameter of 25 mm, a low operating voltage (
ISSN:2195-1071
2195-1071
DOI:10.1002/adom.202001199