| 摘要 |
PROBLEM TO BE SOLVED: To provide a diffractive optical element device for use in spectroscopic technology. SOLUTION: The diffractive optical element device to be used in spectroscopic technology is so designed that light in a wide band is emitted from a light source 31 toward optical elements 24, from which the light is transmitted through at least one detector 29 or 29'. At least two of the optical elements are separate but are offset from each other, and/or their centers are offset two-dimensionally from each other, to create a plurality of partially overlapping spectra 25-28. They are preferably partially integrated with each other, are multiple-diffractive, and have a pattern to be focused dispersively. COPYRIGHT: (C)2008,JPO&INPIT
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