Figure 1: Partially coherent lens-free on-chip microscope. In addition to temporal-coherence requirements, spatial coherence of the illumination is also critical in lens-free holographic microscopy ...

Vertex distance is an essential component when determining the correct power for contact lenses, excimer laser treatments and phakic IOLs. The measurement should always be included in power ...

Researchers from Facebook Reality Labs have shared new methods for the design & fabrication of compact holographic lenses for use in XR headsets. The lenses used in most of today’s XR devices are ...

Researchers have combined theory and practice in a step-by-step method that eliminates much of the guesswork of using freeform lenses. Lenses and mirrors with freeform surfaces enable designers to ...