Bio inspired accommodating fluid intraocular lens

Setterwall, “Surface tension of lithium bromide solutions with heat-transfer additives,” J.

The F-number can be fixed by control the iris aperture. We designed the F-number 4.9–6.4 by using the slim liquid iris, 2 mm thickness like Fig. #178369 - .00 USD (C) 2013 OSA Received ; revised ; accepted ; published 28 January 2013 / Vol.

Whitesides, “Components for integrated poly(dimethylsiloxane) microfluidic systems,” Electrophoresis 23(20), 3461–3473 (2002). The effective focal length f of the two variable liquid lenses can be expressed as  d d  1  1 1 1 = ( n1 − 1)( n2 − 1)  −  1 2   ( 1) ( 1) f R n − R n − 2 1  n1 n2  R1 R2   1 2 (2) where n1 and n2 are the refractive index of liquids 1 and 2, respectively, and d1 and d2 are their lengths; R1 and R2 are the curvatures of lenses 1 and 2, respectively. In this paper, the optical lenses are designed to use a liquid based on deionized water instead of oil. #178369 - .00 USD (C) 2013 OSA Received ; revised ; accepted ; published 28 January 2013 / Vol. radius of lens tele angle 4 × wide angle 1 × 2M pixel 2 mm 110 mm 3.5 mm 20 mm 2.5 mm.

The curvature of the liquid-filled lenses at either end of the membrane is changed under pneumatic control.  1 1 1 ( d1 d 2 )( n1 − 1)  = ( n1 − 1)  −  f R R R1 R2 n1 2  1  #178369 - .00 USD (C) 2013 OSA (3) Received ; revised ; accepted ; published 28 January 2013 / Vol. It is known that PDMS can block water, which has a surface energy density of 72.8 m J/m2, and the surface energy of a liquid increases as the salt concentration increases [6]. Design conditions and goals for optical lens parameters Sensor grade Depth resolution Distance lens to tissue The distance from last lens to image sensor Overall length Max.

©2013 Optical Society of America OCIS codes: (220.3620) Optical design and fabrication; (170.0170) Medical optics and biotechnology.

Lo, “Fluidic lens laparoscopic zoom camera for minimally invasive surgery,” J.

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PDMS has several excellent characteristics and is widely used for micro fabrication of various lab-on-a-chip devices because it is inexpensive, biocompatible, self-sealable, and highly elastic; further, it has excellent optical transparency and allows for easy device fabrication [7, 8]. Lens design results The optical lens module consists of six glass lenses, one polymer lens, one iris with diffraction optical element (DOE), and two liquid lenses. The image resolution by the IRIS aperture diameter. Lens design characterizations The modulation transfer function (MTF) is an important parameter for evaluating the optical performance. Image simulation result using USAF1951 chart; (a) zoom 1 × , (b) zoom 2 × ,(c) zoom 4 ×. Summary of design result optical parameters focal length field of view F number iris diameter overall length MTF 140 lp/mm @ 0.7F MTF 70 lp/mm @ 0.7F optical distortion maximum lens dia. Optical lens parameters surface object 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 IRIS 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 image lens shape spherical spherical spherical spherical spherical spherical spherical spherical spherical spherical spherical spherical spherical spherical spherical spherical spherical spherical spherical spherical spherical spherical spherical spherical spherical spherical spherical spherical spherical aspheric aspheric aspheric aspheric spherical curvature infinite infinite 7.11862489 3.47998469 infinite −5.3586634 infinite infinite infinite 10.1033247 infinite 5.24058305 10.7549464 −10.087711 infinite infinite infinite infinite infinite infinite infinite 3.35446332 −3.4788878 3.7029371 infinite infinite infinite −3.2395301 infinite −18.236305 13.5350694 3.70327883 29.5887853 infinite thickness 110 0 0.5 0.7 0.31136 −0.31136 0.5 0.5 0.1 0.8 0.5 3.69149 0.9 0.25479 0.3 0.2 0.5 0.1 0.45 0.05 3.10094 1.3 0.5 0.3 0.5 0.6 0.4227 −0.4227 0.9227 0.5 0.39574 1.1 3.99000 0 material remark FD60_HOYA 420000.461 420000.461 517000.642 refer to Table 4 refer to Table 4 liquid LAC14_HOYA FD60_HOYA FD60_HOYA 517000.642 517000.642 refer to Table 4 517000.642 492280.526 BACD16_HOYA FD60_HOYA 517000.642 420000.461 420000.461 'E48R25' 'E48R25' refer to Table 4 refer to Table 4 refer to Table 5 refer to Table 5 refer to Table 5 refer to Table 5 Table 4.

The liquid lens is enclosed by a transparent PDMS membrane (Sylgard 186, Dow Corning). 20 mm 2.5 mm 20 mm 2.5 mm remarks CMOS pixel size 1.75 μm 4.

University of California Davis, Sacramento, CA 95817, USA .....

field fundus photography, confocal scanning laser ophthalmoscopy (c SLO), and order in the Taylor expansion of a nonlinear equation is a much ... corresponding ray at the image plane will also change.

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