Purpose To outline the refractive problems associated with presbyopia and to review the
basis and relative merits of currently‐available methods for their correction, with detailed …

Metasurface‐based lenses (metalenses) offer specific conceptual advantages compared to
ordinary refractive lenses. For example, it is possible to tune the focal length of a metalens …

Adjustable lens technology has the potential to improve Head Mounted Displays (HMDs)
through style and comfort by providing optical prescription correction and focussing …

The design, fabrication and characterization of a miniature adjustable-focus endoscope are
reported. Such an endoscope consists of a solid tunable lens for optical power tuning, two …

A tunable-focus large aperture liquid lens is constructed using shape memory alloy (SMA)
springs as actuators. The lens mainly consists of a shallow liquid-filled cylindrical cavity …

In an earlier publication [Appl. Opt. 47, 3722 (2008)] we suggested an adaptive optical lens,
which consists of two cascaded diffractive optical elements (DOEs). Due to the Moiré-effect …

Gradient-index Alvarez lenses (GALs), a new, to the best of our knowledge, type of freeform
optical component, are surveyed in this work for their unique properties in generating …

The metrology of freeform wavefront can be performed by the use of a noninterferometric
method, such as a Shack–Hartmann sensor (SHS). Detailed experimental investigations …

A widespread type of multifocal intraocular lens (MIOL) is based on expanding the depth of
focus with specific amounts of spherical aberration. However, knowing the optimal wavefront …

In this paper aberrations in Alvarez–Lohmann lenses are analyzed, and a semi-analytical
strategy for compensation is derived. An x–y polynomial model is used to describe the …