Results 11 to 20 of about 32,036 (281)

Comparative analysis of the Fresnel lens and the kinoform lens [PDF]

Компьютерная оптика, 2018
Based on a unified approach in the ray approximation, the focusing properties of Fresnel lenses and kinoform lenses are considered and compared. Particular attention is paid to the energy efficiency, chromatic focal shift and resolving power of these ...
Grigoriy Greisukh, Sergei Stepanov, Artyom Ivanovich Antonov   +2 more
doaj   +2 more sources

Acoustophoretic separation of airborne millimeter-size particles by a Fresnel lens. [PDF]

Sci Rep, 2017
Cicek A, Korozlu N, Adem Kaya O, Ulug B.
europepmc   +3 more sources

Miniature Fresnel LC Lens Performance [PDF]

Proceedings of the International Display Workshops, 2020
The performance of miniature, polymer-based Fresnel liquid crystal lenses is discussed, specifically the sensitivity for non-uniformities.
Cuypers, Dieter, Verplancke, Rik, De Smet, Herbert   +2 more
openaire   +1 more source

Fresnel lens sidewall design for imaging optics [PDF]

Journal of the European Optical Society-Rapid Publications, 2015
We developed a ray tracing simulation tool for imaging systems including a Fresnel lens with a quasi-arbitrary sidewall structure. One issue with Fresnel lens is that noise in the image plane can appear from rays passing through or reflected at its ...
Fujii T., Goulet A., Hattori K., Konno K., Tanaka A., Bosmans R., Sawada M., Yazawa H.   +7 more
doaj   +1 more source

Performance enhancement of a single slope solar still with single basin using Fresnel lens

Journal of Mechanical Engineering and Sciences, 2021
This paper presents an experimental study using Fresnel lens to increase the overall efficiency of the conventional Single Slope Solar Still (SSSS) with single basin.
Parimal Sharad Bhambare, Dinesh Keloth Kaithari, Said Abdullah Rashid AI Hosni   +2 more
doaj   +1 more source

Microprismatic Fresnel Lens for Formation of Uniform Light Circle

IEEE Photonics Journal, 2021
Focusing Fresnel lenses are used in many fields of applied optics. These devices are used in optical sensor systems for imaging and optoelectronic integration.
M. L. Fu, E. E. Antonov, D. Y. Manko, V. V. Petrov, K. Z. Rong   +4 more
doaj   +1 more source

Elliptical-Shaped Fresnel Lens Design through Gaussian Source Distribution

Energies, 2022
A novel three-dimensional elliptical-shaped Fresnel lens (ESFL) analytical model is presented to evaluate and maximize the solar energy concentration of Fresnel-lens-based solar concentrators.
Dário Garcia, Dawei Liang, Joana Almeida, Bruno D. Tibúrcio, Hugo Costa, Miguel Catela, Cláudia R. Vistas   +6 more
doaj   +1 more source

Design of a stigmatic lens with minimal Fresnel losses

Компьютерная оптика, 2021
A method for designing double aspheric lenses enabling minimal Fresnel losses in the class of stigmatic lenses is considered. Minimization of the Fresnel losses is provided by ensuring equal ray-deviation angles on both aspheric surfaces of the lens. The
L.L. Doskolovich, D.A. Bykov, G.I. Greisukh, Y.S. Strelkov   +3 more
doaj   +1 more source

Development of Powerhouse Using Fresnel lens

MATEC Web of Conferences, 2018
Solar energy is an alternative source of renewable energy. Sultanate of Oman government showed initiation on utilization of solar energy for domestic and industrial applications.
Al-Dohani Nawar Saif, Nagaraj S. Nayak, Anarghya A., Abhishek V. N.   +3 more
doaj   +2 more sources

Analysis, Design and Fabrication of centimeter-wave Dielectric Fresnel Zone Plate Lens and reflector [PDF]

, 2005
Fresnel lens has a long history in optics. This concept at non-optical wavelengths is also applicable. In this paper we report design and fabrication of a half and quarter wave dielectric Fresnel lens made of Plexiglas, and a Fresnel reflector at 11.1 ...
A. Mahmoudi, Afzalzadeh, Hristov, Hristov, Pearce, R. Afzalzadeh, Soret, Van Buskirk, Wang, Wiltse, Wiltse, Wiltse   +11 more
core   +2 more sources