| 摘要 |
PROBLEM TO BE SOLVED: To provide a spectral device which simultaneously measure a plurality of spectra located in remote wavelength ranges, without deteriorating the spectral resolution. SOLUTION: The device is a Czerny-Turner spectral device, and is a spectral device for simultaneously measuring a first and a second spectrum which appear in separated wavelength ranges simultaneously, in which a slit plate 1 for forming at least an incident slit, a collimator mirror 2, a grating 3, a plurality of camera mirrors 4, 5, and a detector 8 arranged on the conjugate plane of the incident slit are arranged, in this order. The device is equipped with a first optical-path regulating means 6, provided between the detector 8 and the first camera mirror 4 for the first spectrum, and a second optical-path regulating means 7, which is provided between the detector 8 and the second camera mirror 5 for the second spectrum and makes the image of the second spectrum form close to the first spectrum formed on the detector 8. COPYRIGHT: (C)2007,JPO&INPIT
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