Emberger Simon, Alacoque Laurent, Dupret Antoine, Fraval Nicolas, de Bougrenet de la Tocnaye Jean-Louis
Appl Opt. 2018 Jan 1;57(1):85-91. doi: 10.1364/AO.57.000085.
Liquid crystal (LC) tunable lenses have been extensively studied and used in various applications, however, most of them have been evaluated regardless of their optical imaging quality, in particular, concerning their intrinsic diffuse scattering. In this paper, we investigate the impact of such impairments when LC lenses are used as tunable elements in a depth-from-focus algorithm (DfF). We attempt to analyze these effects in order to design LC lenses that mitigate their impact on the imaging quality. For this purpose, we designed various lenses to evaluate several parameters such as optical, electrical, manufacturing, etc., according to their implementations in a near-pixel DfF architecture.
液晶（LC）可调谐透镜已得到广泛研究并应用于各种领域，然而，大多数研究并未考虑其光学成像质量，尤其是其固有的漫散射特性。在本文中，我们研究了在深度聚焦算法（DfF）中将LC透镜用作可调元件时，这些缺陷所产生的影响。我们试图分析这些影响，以便设计出能够减轻其对成像质量影响的LC透镜。为此，我们根据其在近像素DfF架构中的实现方式，设计了各种透镜来评估诸如光学、电学、制造等多个参数。
