Geometrical optics, a branch of optics that eschews wave phenomena in favour of ray propagation, continues to underpin advances in lens design and optical engineering. Contemporary studies in this ...

The thin-lens formula proved comparable to the ray-tracing method in IOL power calculations in normal eyes and eyes that underwent refractive surgery. Preoperative prediction of IOL positioning plays ...

Fujifilm has unveiled 14 concept X Mount lenses — none in development yet — spanning F1.0 primes, F1.4 zooms, APD filters, ...