Daytime/nighttime arms sight
Deployable reflector in the form of a reuleaux triangle for...
Device and method for demonstrating optical effects
Device for securing accessory items to a binocular
Device for the directional transmission and the directional...
Device to secure binoculars to a tripod
Device with night vision capability
Devices adapted to be held at eye level by apparatus
Digital solid-state binoculars
Digital tracking platform for telescopes
Dioptric sight
Disc based alt-azimuth telescope mount
Display device
Display device for telescope system
Display system
Door viewer
Door viewing apparatus
Drive system useful in a night vision device
Dual mounting assembly for night vision system
Dual optical path periscope