TWO-COORDINATE PICK-UP OF ANGULAR POSITION

摘要

An opto-electric two-coordinate pick-up of angular position with one control element controlling two optical channels at the same time. Each optical channel comprises a radiation source (1) and a radiation receiver (2) located on an optical axis (3, 4), a diaphragm (19) with a transparent area (20), for example in the form of a sector with a center (25) and an additional transparent area (21), a condensing lens (22) and a collimating lens (23), as well as a radiation diffuser (24). A control element (5) rigidly connected to a lever (8) mounted on a suspension with independent rotation axes (10, 11) and with a suspension center (12) consists, for example, of non-transparent plates (6, 7) mutually secured at an angle not exceeding 90 degrees along a line (13) passing through the suspension center (12). The control element (5) screens a part of the radiation flux in each of the channels depending on the angular position of the lever (8).