| 摘要 |
An optical switch includes a casing in which a fixed first crystal element having a first surface and a moveable second crystal element sharing the same refracting index with the first crystal element and having a second surface corresponding to the first surface of the first crystal element are arranged. A driving device selectively drives the second crystal element to move relative to the first crystal element between a first position and a second position. In the first position, the second surface of the second crystal element abuts against the first surface of the first crystal element, to allow a light beam transmitting into the first crystal element to pass through the second crystal element without substantial reflection. In the second position, the first and second surfaces are separated from each other, forming a gap therebetween whereby a light beam transmitting into the first crystal element is fully reflected on the first surface and leaves the optical switch in different direction thereby achieving switching operation.
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