Recent Developments in Optofluidic Lens Technology

Mishra, Kartikeya; Ende, Dirk van den; Mugele, Friedrich Gunther

doi:10.3390/mi7060102

Cited by 62 publications

(50 citation statements)

References 81 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…We used pressuredriven liquid lenses due to their large aperture, since electrowetting components are limited in size and by gravitational effects. Electrowetting lenses are governed by surface tension and effects of gravity are generally negligible for mm-size optics [41][42][43]. Specific size limits will be determined by the density mismatch of the two liquids used in the devices.…”

Section: Techniquesmentioning

confidence: 99%

Wide-angle nonmechanical beam steering using liquid lenses

2016

View full text Add to dashboard Cite

Nonmechanical beam steering is a rapidly growing branch of adaptive optics with applications such as light detection and ranging, imaging, optical communications, and atomic physics. Here, we present an innovative technique for one- and two-dimensional beam steering using multiple tunable liquid lenses. We use an approach in which one lens controls the spot divergence, and one to two decentered lenses act as prisms and steer the beam. Continuous 1D beam steering was demonstrated, achieving steering angles of ±39° using two tunable liquid lenses. The beam scanning angle was further enhanced to ±75° using a fisheye lens. By adding a third tunable liquid lens, we achieved 2D beam steering of ±75°. In this approach, the divergence of the scanning beam is controlled at all steering angles.

show abstract

Section: Techniquesmentioning

confidence: 99%

Wide-angle nonmechanical beam steering using liquid lenses

2016

View full text Add to dashboard Cite

show abstract

“…An attractive alternative is offered by adaptive optical elements based on the electrowetting principle [18][19][20]. This allows the control of the shape of a liquid droplet or a liquid-liquid interface on a dielectric surface through an applied voltage.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of wavefront aberration correction using multielectrode electrowetting-based devices

et al. 2017

View full text Add to dashboard Cite

We present numerical simulations of multielectrode electrowetting devices used in a novel optical design to correct wavefront aberration. Our optical system consists of two multielectrode devices, preceded by a single fixed lens. The multielectrode elements function as adaptive optical devices that can be used to correct aberrations inherent in many imaging setups, biological samples, and the atmosphere. We are able to accurately simulate the liquid-liquid interface shape using computational fluid dynamics. Ray tracing analysis of these surfaces shows clear evidence of aberration correction. To demonstrate the strength of our design, we studied three different input aberrations mixtures that include astigmatism, coma, trefoil, and additional higher order aberration terms, with amplitudes as large as one wave at 633 nm.

show abstract

“…Various methods to fabricate and control liquid lenses have been investigated [9]. Liquid crystals [10], Electrowetting (EW) [11,12], thermal stimulation [13], and external pressure actuated pumps [14][15][16][17][18] have all shown promising applications for tunable lenses.…”

Section: Introductionmentioning

confidence: 99%

An automatic holographic adaptive phoropter

Amirsolaimani

Peyghambarian

Schwiegerling

et al. 2017

Biosensing and Nanomedicine X

View full text Add to dashboard Cite

Phoropters are the most common instrument used to detect refractive errors. During a refractive exam, lenses are flipped in front of the patient who looks at the eye chart and tries to read the symbols. The procedure is fully dependent on the cooperation of the patient to read the eye chart, provides only a subjective measurement of visual acuity, and can at best provide a rough estimate of the patient's vision. Phoropters are difficult to use for mass screenings requiring a skilled examiner, and it is hard to screen young children and the elderly etc. We have developed a simplified, lightweight automatic phoropter that can measure the optical error of the eye objectively without requiring the patient's input. The automatic holographic adaptive phoropter is based on a Shack-Hartmann wave front sensor and three computercontrolled fluidic lenses. The fluidic lens system is designed to be able to provide power and astigmatic corrections over a large range of corrections without the need for verbal feedback from the patient in less than 20 seconds.

show abstract

Recent Developments in Optofluidic Lens Technology

Cited by 62 publications

References 81 publications

Wide-angle nonmechanical beam steering using liquid lenses

Wide-angle nonmechanical beam steering using liquid lenses

Numerical analysis of wavefront aberration correction using multielectrode electrowetting-based devices

An automatic holographic adaptive phoropter

Contact Info

Product

Resources

About