Results 71 to 80 of about 1,870,110 (224)

Effect of Wet Expansion Behavior on Polyimide Membrane Diffractive Lens

Coatings, 2019
Optical polyimide (PI) membrane is a potential substrate to fabricate a diffractive primary lens in large aperture space-borne telescope. In this paper, we investigated the wet expansion behavior of PI via a strain gauge method and measured the ...
Guohan Gao, Danbo Mao, Bin Fan, Chunlin Guan   +3 more
semanticscholar   +1 more source

Visual and Patient-Reported Outcomes of a Diffractive Trifocal Intraocular Lens Compared with Those of a Monofocal Intraocular Lens.

Ophthalmology (Rochester, Minn.), 2020
PURPOSE To evaluate the effectiveness and safety of a trifocal intraocular lens (IOL), the TFNT00 (Alcon, Fort Worth, TX), versus a monofocal IOL, the SN60AT (Alcon). DESIGN Food and Drug Administration-approved, prospective, multicenter, nonrandomized,
Satish S. Modi, R. Lehmann, A. Maxwell, K. Solomon, R. Cionni, V. Thompson, Jeffrey D Horn, Michael Caplan, Bret l Fisher, Jerry G. Hu, Elizabeth Yeu   +10 more
semanticscholar   +1 more source

Application of a liquid crystal spatial light modulator to laser marking [PDF]

, 2011
Laser marking is demonstrated using a nanosecond (ns) pulse duration laser in combination with a liquid crystal spatial light modulator to generate two-dimensional patterns directly onto thin films and bulk metal surfaces.
Beck, Rainer J, Hand, Duncan P., Parry, Jonathan P., Shephard, Jonathan D.   +3 more
core   +1 more source

Intolerance of a non-diffractive extended-depth-of-focus IOL with mini-monovision

American Journal of Ophthalmology Case Reports, 2023
Purpose: The use of a non-diffractive extended-depth-of-focus (EDOF) intraocular lens (IOL) with slight myopia of −0.5 D on the non-dominant eye increases the spectacle independence and has good subjective tolerance with optical phenomena comparable to ...
Tyll Jandewerth, Marvin Biller, Thomas Kohnen   +2 more
doaj   +1 more source

Very High Resolution Solar X-ray Imaging Using Diffractive Optics

, 2012
This paper describes the development of X-ray diffractive optics for imaging solar flares with better than 0.1 arcsec angular resolution. X-ray images with this resolution of the \geq10 MK plasma in solar active regions and solar flares would allow the ...
A. Y. Shih, A.H. Gabriel, B. R. Dennis, E. Fabrizio di, G. K. Skinner, G.K. Skinner, G.K. Skinner, G.K. Skinner, J. Krizmanic, J. Krizmanic, J.M. Davila, K.J.H. Phillips, K.J.H. Phillips, K.P. Dere, K.P. Dere, L. Golub, M. J. Li, M. Weber, M. Young, M.J. Aschwanden, P. Lamy, R.P. Lin, S. Vives, S.L. Keil, T.G. Farr   +24 more
core   +1 more source

Diffractive optics for quasi-direct space-to-time pulse shaping [PDF]

, 2008
The strong chromatic behavior associated with a conventional diffractive lens is fully exploited to propose a novel optical device for pulse shaping in the femtosecond regime.
Andrés, Pedro, Gisbert, Rafael, Lancis, Jesús, Mendoza-Yero, Omel, Mínguez-Vega, Gladys   +4 more
core   +2 more sources

Efficacy and safety of picosecond 755‐nm alexandrite laser with diffractive lens array for non‐ablative rejuvenation in Chinese skin

Lasers in Surgery and Medicine, 2018
The picosecond alexandrite laser with diffractive lens array (DLA) offers the dual advantages of a picosecond pulse duration and the fractionated delivery of laser energy.
Heidi Wat, Samantha Yee‐nam Shek, C. Yeung, H. Chan   +3 more
semanticscholar   +1 more source

Optical twin-vortex multi-trapping by Kolakoski lenses

Scientific Reports
In this work, we design and implement a new bifocal diffractive spiral lens within an optical tweezers system. The proposed diffractive optical element coined Kolokaski Kinoform Spiral Lens (KKSL), generates twin optical vortices along the propagation ...
Arlen B. Perez-Hernández, Adrián Garmendía-Martínez, Walter D. Furlan, Juan C. Castro-Palacio, Juan A. Monsoriu, Francisco M. Muñoz-Pérez   +5 more
doaj   +1 more source

Diffractive Optical Elements with a Large Angle of Operation Recorded in Acrylamide Based Photopolymer on Flexible Substrates

International Journal of Polymer Science, 2014
A holographic device characterised by a large angular range of operation is under development. The aim of this study is to increase the angular working range of the diffractive lens by stacking three layers of high efficiency optical elements on top of ...
Hoda Akbari, Izabela Naydenova, Lina Persechini, Sean M. Garner, Pat Cimo, Suzanne Martin   +5 more
doaj   +1 more source

Adjustable hybrid diffractive/refractive achromatic lens

Optics Express, 2011
We demonstrate a variable focal length achromatic lens that consists of a flat liquid crystal diffractive lens and a pressure-controlled fluidic refractive lens. The diffractive lens is composed of a flat binary Fresnel zone structure and a thin liquid crystal layer, producing high efficiency and millisecond switching times while applying a low ac ...
Valley, Pouria, Savidis, Nickolaos, Schwiegerling, Jim, Dodge, Mohammad Reza, Peyman, Gholam, Peyghambarian, N.   +5 more
openaire   +2 more sources