| 摘要 |
A measuring device includes a light source, a holding member for holding a sample, a first concave mirror and a second concave mirror, the second concave mirror being arranged on the light path from the light source to the holding member, the first concave mirror being arranged vis-a-vis the second concave mirror with the holding member interposed between them, the first concave mirror and the second concave mirror being arranged with their concave surfaces facing each other, the first concave mirror being larger than the second concave mirror in terms of their outer dimensions.
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