| 摘要 |
<p>The unit has a correction device for improving a relative position of incident and exiting light rays. Penta prisms are combined with transparent glass blocks (51, 53) that are fixedly attached relative to the prisms comprising coplanar entry and exit surfaces. A rotating angle-dependent parallel offset is provided between light rays incident and exiting on/from the blocks. The rotating angle-dependent parallel offset is evenly selected such that an existing rotating angle-dependent parallel offset is practically and completely compensated for light rays normally incident on the prisms.</p> |
