| 摘要 |
An optical routing device comprising a housing block containing a plurality of intersecting holes or other light guides, and at least one control rod which can be selectively introduced into any of said light guides so that a light reflection means, such as a mirror, carried by that rod is brought into a position lying at the intersection of two said light guides, whereby a light beam travelling in one of said intersecting light guides is re-directed into another of said intersecting light guides.
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