Bandanna temple for sunglasses
Barrel for interchangeable lens
Base assembly
Base for a digital camera
Base for microscope
Base for microscope
Base mount for securing a portable camera
Baseball safety spectacles
Baseball shaped transparency viewer
Baseball shaped transparency viewer
Baseball-type binoculars
Basketball hoop glasses
Basketball-shaped magnifying viewer
Basketball-type binoculars
Battery grip for single-lens reflex camera
Battery housing of rifle scope or similar article
Beam splitting adjustable C-mount optical coupler
Beam splitting adjustable optical coupler
Bean bag camera support
Bendable spectacle temple