Abstract: The invention is a system to simulate hydraulically operated devices that are moved from one position to another position by means of an actuator control unit. In detail, the system includes a first system for accepting commands from the actuator control unit and providing an analog signal representative of the command. A second system is provided converting the analog signal to a digital signal. A third system in the form of a computer is provided for processing the digital signal and generating a digital return signal in response thereto indicative that the hydraulically operated devices have moved from the one position to the other position. A fourth system is included for converting the return signal to a second analog signal. A fifth system is provides for the return of the analog single to the actuator control unit.

Abstract: An eyecup for glasses designed to substantially fit against the face of the wearer. The eyecup may also comprise a lens therein.

Abstract: A prescription adapter ring for use in eyewear, and in particular, a prescription adapter ring for use in wrap-type eyewear.