| 摘要 |
In an optical deflecting device with an optical bridge and with two optical sub-units which can be rotated relative to the optical bridge, the optical sub-units are, in the datum position, aligned in a manner such that the optical entrance axis of the first optical sub-unit is substantially perpendicular to the optical exit axis of the second optical sub-unit and substantially parallel to the optical axis of the optical bridge. This arrangement enables a light beam to be deflected without altering the orientation of the image.
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