国际照明协会1960年均匀色度标尺图的均匀性

FURTHER DATA ON THE UNIFORMITY OF THE CIE 1960 UCS DIAGRAM

本实验通过对CIE 1960均匀色度图黑体轨迹不同区域的色温点∞K、8333K、4167K的视觉评价,探讨这一色度图的均匀性。 我们用了两个被试,分别对视觉色度计2°视野的两半视场进行颜色匹配。两位被试得到相同的结果(1)不同色温点的同一视觉等级图形的形状和大小各不相同,表明CIE1960均匀色度图的黑体轨迹区域不够均匀,(2)∞K和8333K色温点的相同视觉等级长度都不相等,而4167K色温相等。可以认为,1960年均匀色度图在4167K的较小范围内的均匀性较好。

Color matching experiments were carried out with 2 observers on 3 colortemperature points, i. e. ∞K, 8333K and 4167K, on the Planckian locus inthe CIF: 1960 Diagram. A 2°bi-partite field on a visual colorimeter wasused for matching the above standard lights with test lights. The 2 observersgave similar results in that: 1) The size and shape of the tolerance areasfor a match are different for the 3 color temperature points; 2) The highcolor temperature points of ∞K and 8333K are not situated at the centerof the tolerance areas, which indicates that these areas on the Planckianlocus of the CIE 1960 UCS Diagram may not be uniform. But the colortemperature point of 4167K is at the center of the tolerance area whichshows that the area around this point is more uniform.