Design and fabrication of fluid controlled dynamic optical lens system

Gunasekaran, R.A.; Agarwal, Mangilal; Singh, Amritpal; Dubasi, P.; Coane, P.; Varahramyan, Kody

doi:10.1016/j.optlaseng.2004.09.012

Cited by 14 publications

(7 citation statements)

References 29 publications

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“…In both cases the lenses were designed so that the optical power was continuously adjustable between negative and positive optical powers, which are in the typical range of correction for eyeglasses. Prior work on polydimethylsioloxane (PDMS) lenses [10,11] concentrated on spherical focal lengths shorter than 50 mm (greater than 20 diopters (D)), which are not typically used for ophthalmic corrections.…”

Section: Introductionmentioning

confidence: 99%

Astigmatism and defocus wavefront correction via Zernike modes produced with fluidic lenses

et al. 2009

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Fluidic lenses have been developed for ophthalmic applications with continuously varying optical powers for second order Zernike modes. Continuously varying corrections for both myopic and hyperopic defocus have been demonstrated over a range of three diopters using a fluidic lens with a circular retaining aperture. Likewise, a six diopter range of astigmatism has been continuously corrected using fluidic lenses with rectangular apertures. Imaging results have been characterized using a model eye.

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Section: Introductionmentioning

confidence: 99%

Astigmatism and defocus wavefront correction via Zernike modes produced with fluidic lenses

et al. 2009

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“…Ref. [15] and references therein). This and similar techniques mimicking the nature seem to be promising; however, they need still some effort before they will extend and expand the application of the GRIN lenses in a variety of optical systems.…”

Section: Opticsmentioning

confidence: 99%

Area detectors technology and optics—Relations to nature

Pełka

2005

Nuclear Instruments and Methods in Physics Research Section A:

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“…The second method is to use two immiscible liquid interfaces such that different applied voltage can change the meniscus radius of curvature and the resultant focal length. Polydimethylsiloxane (PDMS) thin film is the typical material for the elastomeric membrane and fluid actuated pressure can be used to obtain various focal lengths in the optical system [ 10 , 11 ]. The gravity-induced differential can be eliminated by matching the fluids densities [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

A lab-on-phone instrument with varifocal microscope via a liquid-actuated aspheric lens (LAL)

et al. 2017

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In this paper, we introduce a novel concept of liquid-actuated aspheric lens (LAL) with a built-in aspheric polydimethylsiloxane lens (APL) to enable the design of compact optical systems with varifocal microscopic imaging. The varifocal lens module consists of a sandwiched structures such as 3d printed syringe pump functionally serves as liquid controller. Other key components include two acrylic cylinders, a rigid separator, a APL/membrane composite (APLMC) embedded PDMS membrane. In functional operation, the fluidic controller was driven to control the pressure difference and ALPMC deformation. The focal length can be changed through the pressure difference. This is achieved by the adjustment of volume change of injected liquid such that a widely tunable focal length. The proposed LAL can transform to 3 modes: microscopic mode (APLMC only), convex-concave mode and biconcave mode. It is noticeable that LAL in the operation of microscopic mode is tunable in focus via the actuation of APLMC (focal length is from 4.3 to 2.3 mm and magnification 50X) and can rival the images quality of commercial microscopes. A new lab-on-phone device is economically feasible and functionally versatile to offer a great potential in the point of care applications.

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Design and fabrication of fluid controlled dynamic optical lens system

Cited by 14 publications

References 29 publications

Astigmatism and defocus wavefront correction via Zernike modes produced with fluidic lenses

Astigmatism and defocus wavefront correction via Zernike modes produced with fluidic lenses

Area detectors technology and optics—Relations to nature

A lab-on-phone instrument with varifocal microscope via a liquid-actuated aspheric lens (LAL)

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