| 摘要 |
PURPOSE: An optical switch is provided to enhance the reliability and reduce the manufacturing cost and the size by combining an electromagnetic driving mechanism used in an existing electromagnetic relay with simple optical parts. CONSTITUTION: In the device, a mirror(first mirror)(3) is directly installed on an upper surface of one end portion of the armature(2). The mirror(3) is formed by a thin glass or crystal plate coated with a reflection film. An incidence-side optical fiber(4) and emission-side optical fibers(5,6) are installed above the mirror(3). Between the mirror(3) and the incidence-side optical fiber(4), a lens(incidence-side optical system)(7) for guiding emitted light from the incidence-side optical fiber(4) to the mirror(3) is installed. Between the mirror(3) and the emission-side optical fiber(5), a lens (emission-side optical system)(8) for guiding light reflected by the mirror(3) to the emission-side optical fiber(5) is installed. Similarly, a lens(9) for guiding light reflected by the mirror(3) to the emission-side optical fiber(6) is installed between the mirror(3) and the emission-side optical fiber(6). Hereinafter, the end portion of the armature(2) where the mirror(3) is installed is referred to as one end portion, and the end portion on the opposite side is referred to as the other end portion.
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