| 摘要 |
The device (10) has a transmitter (12) that is configured to provide non-polarized light with a polarizer (20). A receiver (16) configured to measure the light passing through the polarizer light intensity to produce a position-dependent signal. A polarization filter is arranged in front of the receiver. The receiver and the polarizer as a function of the relative position of two objects are moved relative to each other. The polarizer with two different polarization directions is arranged on a surface which is curved. |
