The non breaking quality decision device which

摘要

PROBLEM TO BE SOLVED: To provide a reference body for calibrating a light projecting and receiving means capable of acquiring data having reproducibility even if light is projected from any direction when the machine body difference of a light projecting or detecting means itself or the presence of the abnormality of an individual light projecting or detecting means is confirmed.;SOLUTION: In the reference body 10 for calibrating the light projecting and detecting means for confirming the machine body difference of the light projecting or detecting means 3 and 4 built in a non-destructive quality judge device 1 for optically judging the internal quality of agricultural products or whether abnormality is present in the individual light projecting or detecting means 3 and 4, a columnar or spherical reference body comprising a translucent or transparent uniform material is constituted. In the reference body 10, a light screening plate 11 is attached to the upper part of the reference body 10 and a light detecting hole 11a is bored in the almost central part of the light screening plate 11. Further, the reference body of a conical stand 10 which comprises a translucent or transparent uniform material and of which the upper part has a bottom area larger than that of the lower part.;COPYRIGHT: (C)2007,JPO&INPIT