Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Reexamination Certificate
2005-04-12
2005-04-12
Lauchman, Layla (Department: 2877)
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
C356S328000, C356S307000
Reexamination Certificate
active
06879395
ABSTRACT:
In a spectrum measuring instrument of the present invention, a detecting surface of a detector is a two-dimensional detecting surface and spectrum light coming out from a dispersing element and is irradiated to a region A on the detecting surface. Signal intensity at the regions on the detecting surface other than the region A where the spectrum light is irradiated, is subtracted from signal intensity on the region A. Consequently, it is possible to obtain an accurate spectrum intensity signal by processing a detection signal in such a manner that adverse effects of stray light generated inside the spectrum measuring instrument and unwanted light generated by reflection and diffraction occurring on the surface of a detecting element are removed.
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Shigeru, S. et al., “Multiwavelength Spectrophotometer,” Patent Abstracts of Japan, Japanese Patent Publication No. 56-057925, May 20, 1981, (1 sheet).
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Oka Kouichi
Okawauchi Makoto
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Lauchman Layla
Otsuka Electronics Co., Ltd.
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