The Acceptance Angle The numerical aperture measures the acceptance angle of a fiber. Advertisement. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.

Achromatic performance of different single lenses and multilayer lenses. (A) Schematic of the designer 3D-printed multilayer achromatic metalens (MAM). (B) Schematic of traditional and flat optics ...

P ut simply, the ‘aperture’ is the hole in the lens that lets the light through, and for a long time camera lenses have had adjustable apertures so that you can control the amount of light. It ...

Lens aperture is used to control exposure, but it also controls the 'depth of field' in a photo. This was shot with a Fujinon 50mm f/1.0 lens, ...

Variable aperture has been around since the mid-1800s, but only on dedicated cameras. Now it makes its smartphone debut on the Samsung Galaxy S9 and S9 Plus.