| 摘要 |
PROBLEM TO BE SOLVED: To set a deflection angle of a light beam which is propagated in the space with good accuracy. SOLUTION: An optical switch 26 is provided with an input side switch element 12 having two or more light input ports 10, and an output side switch element 16 having two or more light output ports 14. Each of the light input ports of the input side switch element is provided with input side light deflection element groups 20 which consist of two light deflection elements 18a and 18b. These light deflection elements are disposed along the incidence direction of the optical signal made incident on the light input port. Each of the light output ports of the output side switch element is provided with output side light deflection element groups 24 which consist of two light deflection elements 22a and 22b. These light deflection elements are disposed along the emission direction of the optical signal emitted from the light output port. |
