| 摘要 |
PURPOSE:To assure the secure arrival of monochromatic light having a prescribed wavelength at a prescribed photoelectric transducer in a photodiode array by providing an optical switch stator wherein plural optical exit end faces are disposed near the diametral line of the circumference in parallel with a light dispersion plane by a spectroscope. CONSTITUTION:An optical switch rotor 22 is disposed rotatably around the central axis thereof by a driving device with the central axis positioned on the extension line of the central axis O of an optical switch stator 21, and is constituted of a mirror M1 disposed so as to intersect the light emitted from the end faces 7a, 7b, 7c, 7d of the bundles fiber at the stator 21 with the central axis and a mirror M2 reflecting the light reflected by the M1 toward a grating G, on the circumference corresponding to the virtual circumference C on the end face of the stator 21. The deviation of the optical axis in a horizontal direction owing to a deviation of the mirror M1 in its stop position is negligible and therefore the respective monochromatic light dispersed by the grating G in the horizontal direction are conducted to the prescribed photoelectric transducers in a photodiode array PDA and the error in wavelength is negligible. |
