| http://www.w3.org/ns/prov#value | - A filter rotating body 908A shown in FIG. 17 is an example in which the widths and thicknesses along the principal surface 10a of the band pass filters 11a to 11d are 10 mm and 2 mm, and the band pass filters 11a to 11d are disposed so that the shortest distance from the rotational center C1 is 1 mm and the incident angle of the optical incidence plane 12 to the lines connecting the rotational cen
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