| 摘要 |
PURPOSE:To display chromaticity change and color difference change, by selecting the angle of incident light in a broad range, changing the angle of light receiving by every desired angle, and measuring the stimulus value of diffused reflected light or transmitted light. CONSTITUTION:Horizontal rotary shafts 18 and 18' are separately provided on a straight line. A set screw 19 is loosened, a desired angle is set by the rotation using an angle scale 20, and the screw is tightened. A sample table 17 can be rotated with the extended axis of a vertical shaft 21 as a rotary axis. A set screw 23 is loosened and the sample table is rotated by a desired angle. Then the screw is tightened and fixed. The rotary angle is read by using a pointer 24 that is fixed to the sample table 17 and an angle scale plate 25, with a position, where a sample is made to be a right angle with respect to the optical axis, as 0 deg.. The rotary angle of a light receiving angle is read by using the scale plate 25 and a pointer 24' that is provided in an arm 30 as required. When the number of the teeth of a pulley is adequately designed, the angle of one step of a motor can be rotated at every desired angle by one pulse. |
