| 摘要 |
<p>The light barrier has a basic arrangement (1) of a transmitter (2) which radiates a light signal (3). A receiver (4) is provided for generating an output signal for a controller (5). An active reflector arrangement (6) is provided with another receiver (7) for receiving light signal received for the transmitter of the radiated light signal. Independent claims are included for the following: (1) an active reflector arrangement for a light barrier to detect an optical path; and (2) a gate drive control.</p> |
