Face mask mount for a night vision system

Field glass

Field microscope

Fixed direct endoscopic optical coupler

Flashlight

Flip up telescope assembly

Flip-up sunglasses

Float for eyeglasses

Float for spectacles

Focusing wheel for binoculars

Folding binoculars

Folding magnifier with light

Football-shaped binoculars

Football-shaped telescope

Forensic examination lens assembly for use with a flashlight

Frame for a magnifier

Frame tracer and centering device in particular for ophthalmic l

Front rifle scope shade

Front rifle scope shade

Fusion night vision system