Patent ID: 7164817

Claim:
An optical switch, provided in a middle of an optical transmission line, for switching between a case when a light sent through the optical transmission line is straightly transmitted, and a case when the light sent through the optical transmission line is transmitted to an outside location and the light from the outside location is introduced to the optical transmission line, the optical switch comprising: an input light emitting collimator device which collimates and emits the light sent through the optical transmission line; an output light receiving collimator device which receives the collimated light emitted from the input light emitting collimator device which is located a predetermined distance therefrom, and introduces the collimated light to the optical transmission line; a light switching part retractably arranged between the input light emitting collimator device and the output light receiving collimator device, wherein the light switching part includes: a drop light receiving collimator device which receives the collimated light emitted from the input light emitting collimator device, introduces the collimated light to a dropping transmission line, and sends the collimated light to an outside location when the light switching part is arranged between the input light emitting collimator device and the output light receiving collimator device, and an add light emitting collimator device which receives a light sent from an outside location through an adding transmission line, collimates the light, and emits the collimated light to the output light receiving collimator device which introduces the collimated light to the optical transmission line when the light switching part is arranged between the input light emitting collimator device and the output light receiving collimator device; and a movable holding part formed with a V groove and retractably arranged between the input light emitting collimator device and the output light receiving collimator device, wherein the drop light receiving collimator device and the add light emitting collimator device are fixed to the V groove.