Patent ID: 10921578

Abstract:
An eyecup for an optic can include an elastic body forming an eye receiver and a viewing cavity, the elastic body configured to move between a relaxed state and a compressed state. The eyecup can include a diaphragm formed from or attached to an inner surface of the elastic body, the diaphragm including one or more flaps configured to be in a closed position when the elastic body is in the relaxed state such that the one or more flaps block sight of an optic through the viewing cavity, and to be in an open position when the elastic body is in the compressed state such that the one or more flaps allow sight of an optic through the viewing cavity. The eyecup can include one or more magnets disposed on at least one of the one or more flaps to move with the one or more flaps, and one or more sensors disposed in a fixed location and configured to sense a magnetic field or flux thereof of the one or more magnets to sense the one or more magnets when the flaps are in or near or moving toward the open position.