Patent ID: 8848196
Filing Date: 2014-09-30
Classification: G01J,G02B

Abstract:
1. A spectrophotometer comprising: a first substrate; a second substrate facing the first substrate; a first reflecting film provided on the first substrate; a second reflecting film provided on the second substrate and facing the first reflecting film with a gap between the second reflecting film and the first reflecting film; a gap distance changing section changing a gap distance of the gap by bending the second substrate by application of an analog voltage; a measured voltage obtaining section obtaining a measurement target voltage; a detecting section detecting light intensity of a light extracted after passing through the first reflecting film and the second reflecting film; a filter driving section applying the analog voltage, which continuously varies, to the gap distance changing section; a voltage monitoring section monitoring the analog voltage applied to the gap distance changing section; and a light intensity obtaining section obtaining the light intensity detected by the detecting section when the analog voltage monitored by the voltage monitoring section becomes the measurement target voltage.