Spectrophotometer having prompt spectrophotometric measurement
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United States of America Patent
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Sep 30, 2014
Grant Date -
May 2, 2013
app pub date -
Oct 12, 2012
filing date -
Oct 26, 2011
priority date (Note) -
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Abstract
A spectrophotometer includes a fixed substrate having a fixed reflecting film, a movable substrate having a movable reflecting film, a tunable interference filter having a static actuator changing the gap distance of an inter-reflecting film gap between the fixed reflecting film and the movable reflecting film, a detecting section detecting the light intensity of a light extracted by the tunable interference filter, a voltage setting section and a voltage controlling section that apply a continuously-varying analog voltage to the static actuator, a voltage monitoring section monitoring the voltage applied to the static actuator, and a light intensity obtaining section obtaining the light intensity detected by the detecting section when the voltage monitored by the voltage monitoring section becomes a predetermined voltage to be measured.
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