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Ultrasound liquid crystal lens with enlarged aperture using traveling waves
- Source :
- Optics Letters. 46:1169
- Publication Year :
- 2021
- Publisher :
- Optica Publishing Group, 2021.
-
Abstract
- A new type of ultrasonically controlled concave liquid crystal lens based on traveling waves (TWs) with a divided electrode structure and an appropriate driving scheme is proposed in this Letter. The lens uses an annular piezoelectric ceramic divided into four parts for four-phase driving and consists of a liquid crystal layer in a sandwich structure between two circular glass substrates. The lens configuration was simulated by finite element analysis using the Ansys software. Here we discuss the use of TWs to expand the lens aperture and clarify the lens’ optical characteristics using a Shack–Hartmann wavefront sensor. The effective lens aperture using TWs was 4.4 mm, and the focal length was 3.8 m.
- Subjects :
- Materials science
Aperture
business.industry
Astrophysics::Instrumentation and Methods for Astrophysics
Physics::Optics
02 engineering and technology
Wavefront sensor
021001 nanoscience & nanotechnology
01 natural sciences
Piezoelectricity
Atomic and Molecular Physics, and Optics
Finite element method
law.invention
Physics::Fluid Dynamics
010309 optics
Lens (optics)
Optics
Liquid crystal
law
0103 physical sciences
Focal length
0210 nano-technology
business
Refractive index
Subjects
Details
- ISSN :
- 15394794 and 01469592
- Volume :
- 46
- Database :
- OpenAIRE
- Journal :
- Optics Letters
- Accession number :
- edsair.doi.dedup.....1f367c76032a373a20892720d7760597
- Full Text :
- https://doi.org/10.1364/ol.414295