| 摘要 |
PURPOSE:To measure the brilliancy etc. of a metallic coating quantitatively in a short time, by using an optical system of a sample stage provided with a light source unit a light receiving unit and a sample tilting unit. CONSTITUTION:A light from a light source 11 is passed through a stop and made to be parallel rays by a lens, and these rays reach a sample set in a measuring opening 31 of a sample stage 3. Reflected rays of light from the sample are passed through a stop, a lens, etc. and received by an integrating sphere 21. Then they are sensed by each of X, Y and Z light receiving elements 22, 23 and 24 with a tristimulus values filter set in front respectively. Tristimulus values X, Y and Z obtained from a light receiving unit are converted into values L, (a) and (b) in a colorimetric system of L, (a) and (b), and the brilliance, brightness, directional property, chroma and metamerism can be determined quantitatively according to prescribed formulas. |
