Reducing speckle in double-pass systems using focus tunable lenses

Autor:	García Guerra, Carlos Enrique|||0000-0001-7013-9938, Aldaba Arévalo, Mikel|||0000-0001-5835-4395, Arjona Carbonell, Mª Montserrat|||0000-0001-9040-8410, Pujol Ramo, Jaume|||0000-0003-0811-9244
Přispěvatelé:	Universitat Politècnica de Catalunya. Departament d'Òptica i Optometria, Universitat Politècnica de Catalunya. GREO - Grup de Recerca en Enginyeria Òptica
Jazyk:	angličtina
Rok vydání:	2014
Předmět:	genetic structures double-pass Quality control--Optical methods Lents Ulls -- Acomodació i refracció Òptica -- Mesuraments eye diseases Retina Eye--Accommodation and refraction Speckle tunable lens Ciències de la visió [Àrees temàtiques de la UPC] sense organs Lenses optical quality
Zdroj:	Recercat. Dipósit de la Recerca de Catalunya instname UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC)
Popis:	Speckle arises in double-pass systems when coherent light is reflected by the retina. Since it degrades the images that are used to characterize the eye, there is special attention in reducing speckle when working with instruments based on retinal reflection. We present in this work the results of reducing speckle in a double-pass system by varying the vergence of the beam entering the eye with an electro-optical liquid lens during the recording of images. An artificial and a real eye were measured, observing a speckle reduction when the method was applied.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::c0011a6ab25789861437803082311b6c https://hdl.handle.net/2117/79416 Zobrazit plný text záznamu