APPARATUS FOR MEASURING OPTICAL PROPERTY

An apparatus for measuring optical property to enlarge dynamic range is provided to improve the precision of measurement by suppressing multiple reflections between a filter array and a diffraction grating. An apparatus for measuring optical property comprises: a spectral detection unit(26) outputti...

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Bibliographische Detailangaben
Hauptverfasser: NAGASHIMA TAKU, MIZUGUCHI TSUTOMU, OSHIMA KOSEI
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:An apparatus for measuring optical property to enlarge dynamic range is provided to improve the precision of measurement by suppressing multiple reflections between a filter array and a diffraction grating. An apparatus for measuring optical property comprises: a spectral detection unit(26) outputting the signal according to the intensity of each wavelength component included in light; a light guide part(24) inducing the light from the luminous body to the spectral detection unit; an optical filter part(22) arranged from the light guide part to the spectral detection unit on the optical path; and a control unit(30) for controlling the depreciation ratio. The optical filter part switches the depreciation ratio of the transmitted light. The control unit determines the quantity of light which is incident to the spectral detection unit based on the outputted signal.