Optical device

摘要

An optical device includes: a lock having a locking unit and an actuation unit having at least one sensor and a reflective plate; and a key for the lock, configured with an unlocking unit having at least a light-guiding element for transmitting optical signals between the actuation unit and the unlocking unit. The actuation unit is activated to unlock the locking unit after the sensor detects and recognizes the optical signals. As the optical signals that are to be transmitted between the actuation unit and the unlocking unit can not be intercepted easily and also can be encoded, not only it is difficult to forge the key for the optical device of the present invention, but also the structural integrity of the optical device will not deteriorate easily after being used for a period of time. Therefore, the present invention is low in cost and has an excellent anti-theft effect.