| 摘要 |
PURPOSE:To prevent a specular change, to improve the switching reproducibility, and to reduce the size by setting an optical axis of incidence and an optical axis of projection parallel to each other. CONSTITUTION:This switch is equipped with an optical component 1 which bends the optical axis H of incidence more than twice to generate the optical axis H' of projection parallel to the optical axis of incidence, an incidence port 3 which makes light incident on the optical component 1, and projection ports 7a-7n which are arranged on the optical axis H' of projection around the optical axis H of incidence. Then the optical component 1 rotates the optical axis H' of projection to the position of a desired incident port 3 around the optical axis H of incidence. The light of the incidence port 3 can, therefore, be projected on one of projection ports 7a-7n selectively. Consequently, the device is reduced in overall size, the secular change is prevented, and the switching reproducibility is improved. |
