Liquid Pressure Varifocus Lens

Kuwano, Ryoichi; Tokunaga, Tsuyoshi; Otani, Yukitoshi; Umeda, Norihiro

doi:10.1007/s10043-005-0405-3

Cited by 33 publications

(13 citation statements)

References 4 publications

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“…[12][13][14] The electrowetting tunable lenses make use of two immiscible liquids of different refractive indices, [15][16][17] and control the driving voltage to produce the shape alteration of the interface. For example, the pressure-controlled liquid lenses use liquid as the main optical medium and alter the focal length by controlling the injection of fluid into an elastic chamber.…”

Section: Introductionmentioning

confidence: 99%

Bioinspired solid–liquid mixed tunable lens with multilayered structure

Wang

2015

Opt. Eng

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Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 08/18/2015 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx Abstract. A solid-liquid mixed tunable lens with multilayered structure is proposed. The designed lens utilizes a solid-state elastic polymer, optical liquid, and glass as the optical medium, and adjusts the focus by changing the surface curvature of the elastic polymer. The integrated structure of the tunable lens is presented, as well as detailed descriptions of the lens materials, fabrication, and assembling process. Images captured through the tunable lens under different displacement loads are presented, and the relationship among the displacement load, curvature radius, and effective focal length is analyzed. Additionally, the optical property of the tunable lens is simulated using the ZEMAX software. A change in focal length from 14.8 mm to 30 mm is demonstrated within the tiny 0.12 mm variation of the displacement load. Numerical analyses show that the lens distortion is less than 2%, and the modulation transfer function reaches 67 line pairs per mm. The solid-liquid mixed tunable lens shows the potential for developing a compact, low-aberration, and stable optical system. Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 08/18/2015 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx Optical Engineering 065104-8 June 2015 • Vol. 54(6) Liang, Wang, and Du: Bioinspired solid-liquid mixed tunable lens with multilayered structure Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 08/18/2015 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx

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Section: Introductionmentioning

confidence: 99%

Bioinspired solid–liquid mixed tunable lens with multilayered structure

Wang

2015

Opt. Eng

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“…The ability to rapidly change the focal plane of an optical system has applications in various fields, such as confocal profilometry [1], confocal microscopy [2], focus tracking [3], or material processing [4]. For all these practical uses, a fast focal-scanning optical element with a high transmission coefficient is desirable but is not readily available.…”

mentioning

confidence: 99%

High-speed varifocal imaging with a tunable acoustic gradient index of refraction lens

2008

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Fluidic lenses allow for varifocal optical elements, but current approaches are limited by the speed at which focal length can be changed. Here we demonstrate the use of a tunable acoustic gradient (TAG) index of refraction lens as a fast varifocal element. The optical power of the TAG lens varies continuously, allowing for rapid selection and modification of the effective focal length at time scales of 1 mus and shorter. The wavefront curvature applied to the incident light is experimentally quantified as a function of time, and single-frame imaging is demonstrated. Results indicate that the TAG lens can successfully be employed to perform high-rate imaging at multiple locations.

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“…Fluidic lenses provide tunable optical power through form control of a surface membrane. Fluidic lenses have been achieved through different driving approaches: electrowetting [4][5][6], mechanical-wetting [7], chemical driving [8,9], thermal driving [10,11], radiation pressure [12], and pressure controlled elastic expansion [13][14][15]. Our research focuses on the application of fluidic lens power control through pressure-controlled elastic surface expansion.…”

Section: Introductionmentioning

confidence: 99%

Nonmechanical zoom system through pressure-controlled tunable fluidic lenses

et al. 2013

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We have developed a variable-power zoom system that incorporates fluidic lenses and has no moving parts. The designed system applies two single-chamber plano-convex fluid singlets, each with their own distinct design, as well as a conventional refractive lens. In this paper, we combine the two fluid elements to form a variable-power telescope, while the fixed lens enables image formation. In this configuration, the image plane location is fixed. By synchronizing the powers of the two fluidic lenses, we produce a varying magnification zoom system. The design of each lens and the coupled system is analyzed. The coupled device experimentally produced a magnification range of 0.1× to 10× zoom or a 20× zoom magnification range with no moving parts. Furthermore, we expand on optical performance and capabilities of our system with fluidic lenses relative to traditional zoom lenses.

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Liquid Pressure Varifocus Lens

Cited by 33 publications

References 4 publications

Bioinspired solid–liquid mixed tunable lens with multilayered structure

Bioinspired solid–liquid mixed tunable lens with multilayered structure

High-speed varifocal imaging with a tunable acoustic gradient index of refraction lens

Nonmechanical zoom system through pressure-controlled tunable fluidic lenses

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