| 摘要 |
PROBLEM TO BE SOLVED: To clearly and simply quantify such visual impressions as metallic feeling and glitter of pearls, and thereby rationalize comparative checkup of the tested object with a reference object.SOLUTION: Illuminating units 3 are scattered in an arc shape on the inner peripheral part of the inner wall of a dome-shaped housing 4 and indirectly illuminate the inner wall face above. The illuminating units 3, using LED illumination of 92 or more in color rendering index, are high color rendering white light sources for indirect illumination and, in spite of their small size and light weight, satisfy the requirements of light sources for color evaluation and are free from the problem of color aberration, which usually occurs to LED. The dome-shaped housing 4 is equipped with a dome-shaped cover 41, a round illumination aperture 42, an L-sectioned light blocking wall 43 constituting a coaxial round shape with the periphery of the cover 41 to form the illumination aperture 42 and a fitting part 44 for fixing a camera in a position inclined from the upper center of the inside. The camera 2 is arranged on the fitting part 44, and the illuminating units 3 are arranged inside the light blocking wall 43.SELECTED DRAWING: Figure 2 |
