Lens design is of paramount importance in the evolving world of technology, where compactness and high optical performance are a necessity, ranging from smartphones and wearable devices to vehicles and virtual reality. Freeform design techniques allow us to transcend traditional limitations, but creating new optics remains a substantial challenge unless we consider unconventional physical phenomena. Here, we introduce a lens type based on freeform design, employing spiralization of one of its diopters that results in optical vortices. This enables multifocality, primarily serving needs in ophthalmology; however, its potential applications could broadly impact many other domains. In particular, this lens design could be crucial in miniaturizing emerging technologies while retaining their optical quality.

中文翻译：

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螺旋屈光度：具有增强多焦点性能的自由曲面镜片

在不断发展的技术世界中，镜头设计至关重要，从智能手机和可穿戴设备到车辆和虚拟现实，紧凑性和高光学性能是必需的。自由曲面设计技术使我们能够超越传统的限制，但创造新的光学器件仍然是一个巨大的挑战，除非我们考虑非常规的物理现象。在这里，我们介绍一种基于自由曲面设计的镜片类型，采用其中一个屈光度的螺旋化，从而产生光学涡流。这使得多焦点成为可能，主要满足眼科的需求；然而，它的潜在应用可能会广泛影响许多其他领域。特别是，这种镜头设计对于小型化新兴技术同时保持其光学质量至关重要。