A device for measuring the angular position of a member movable in rotation with respect to a fixed member, in particular of a frame of the telescopic with respect to a support structure that - ci.

摘要

This device, of the type comprising an incremental optical encoder (3) comprising two parts (4, 5) to be movable in rotation in one another, one (5) is associated with the mobile member (1) and the other (4) to the fixed member (2) and whose output is connected to means for determining the angular position of the mobile member (1) with respect to the fixed member (2) from the relative angular position of the two encoder parts, is characterized in that the coder (3) is carried by one of the elements (1), one of the parts (5) that - latter being connected to this member (1) and the other (4) being connected to the optical means of control of this encoder part in at least one specified orientation with respect to the other member (2).