Dioptre-adjusting mechanism for binoculars (field glasses)

摘要

A dioptre-adjusting mechanism for binoculars has a holding device (9, 13) for holding an optical component (10), a dioptre-adjusting ring (6) rotatable about the optical axis (E) of the optical element (10), a dioptre-adjusting device (4, 7) in engagement with the holding device (9, 13) and the dioptre-adjusting ring (6) in order to rotate the dioptre-adjusting ring (6) and thereby to move the holding device (9, 13) in the direction of the optical axis (E) and thereby to carry out a dioptre adjustment, and rotation-restraining means (1b, 6b) for preventing the dioptre-adjusting ring (6) from being moved inadvertently by making the dioptre-adjusting ring (6) to be non-rotatable. <IMAGE>