Abstract: An adapter that optically couples a camera on a mobile device to an eye piece of an optical device. The adapter includes a base plate configured to retain the mobile device without obstructing a display screen on the mobile device. The base plate includes an optical interface configured to attach to the eye piece of the optical device. A mounting structure is configured to secure the optical interface to the eye piece of the optical device. The mounting structure includes a high friction interface that prevents rotation of the adapter relative to the eye piece. An adjustment system with threaded micro-adjust mechanisms is configured to move the base plate relative to the optical interface in at least two degrees of freedom to optically couple the camera on the mobile device with an optical axis of the eye piece. Images captured by the optical device are displayed on a viewing screen of the mobile device.

Abstract: An equipment carrier configured to secure at least one piece of equipment to a user, and corresponding method. The equipment carrier includes at least one equipment holder configured to be secured to the user. The equipment holder includes an engaging portion configured to receive the equipment. At least one tether includes a first portion attached to the equipment and a second portion attached to the user at a second location offset from the engaging portion. The at least one tether applies a tension force on the equipment to retain the equipment with the engaging portion of the equipment holder. The tension force is negligible when the equipment is disengaged from the equipment holder and positioned near the second location.

Abstract: An adapter that optically couples a camera on a mobile device to an eye piece of an optical device. The adapter includes a base plate configured to retain the mobile device without obstructing a display screen on the mobile device. The base plate includes an optical interface configured to attach to the eye piece of the optical device. A mounting structure is configured to secure the optical interface to the eye piece of the optical device. The mounting structure includes a high friction interface that prevents rotation of the adapter relative to the eye piece. An adjustment system with threaded micro-adjust mechanisms is configured to move the base plate relative to the optical interface in at least two degrees of freedom to optically couple the camera on the mobile device with an optical axis of the eye piece. Images captured by the optical device are displayed on a viewing screen of the mobile device.

Abstract: An equipment carrier comprises one or more support members, an equipment holder, and an extensible tether. The equipment holder receives and retains an equipment item. The support members support the equipment holder against a wearer's torso or limb. The extensible tether is attached to the carrier is attached to the equipment item. The extensible tether is under tension and elongated when the equipment item retained by the equipment holder, and is under negligible tension and not elongated the equipment item held by the wearer at the wearer's face or head.