| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a small-sized portable apparatus for nondestructively measuring a sugar content of fruits and vegetables without an error using transmitted light from a fruit or vegetable obtained by irradiating the fruit or vegetable with monochromatic light having a specific wavelength. <P>SOLUTION: The apparatus comprises a light source control section 220 which irradiates a measurement point of the fruit or vegetable with light 11, 12 of two different near-infrared wavelength ranges, light detectors 51, 52 which receive transmitted light 12, 22 and 13, 23 generated by the light 11, 12 passing through the measurement point, and detect the amount of transmitted light received at two separate points. Relative transmittance, the ratio between the amount of transmitted light of the same wavelength at the two detection points, is calculated for each wavelength, and using the relative transmittance for each wavelength, the sugar content of the fruit and vegetable is calculated. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
