Relay variable power optical system and a microscope equipped wi

Releasable/interchangeable fine focus knob for a microscope

Replacement assembly for an image intensifier tube

Replacement assembly for an image intensifier tube utilizing...

Replacement device for microscopes

Replicated relay lens system

Resolution confocal microscope, and device fabrication method us

Reticle apparatus for night vision devices

Reticle assembly for optical sight

Reticle for correcting parallax shift in aiming telescopes

Retractable binoculars attachable to a visor

Retrofittable tubular intermediary element

Revolver assembly of a microscope

Riflescope utilizing gradient index lenses

Ring lens assembly for an optical viewing device

Rod lens system for rigid endoscopes

Rotary image viewing apparatus connected to a rotary mirror...

Rotating slit aperture for scanning microscopy

Rugged optical filter and switch for communication networks