| 摘要 |
PROBLEM TO BE SOLVED: To quantify the effect of an antidazzle property and to achieve the matching property with a visual sensitive test by casting light from a diffusive light source and specifying the reflected image brightness defined as the inclination of the luminance distribution of the regular reflection image to a specific value or below. SOLUTION: The surface of a sample 3 is irradiated with the light from the light source lamp 1 and the reflected image thereof is photographed by a CCD camera 2. The angles of the light source lamp 1 and the CCD camera 2 with respect to the normal of the sample 3 are made equal. The evaluation of the reflected image brightness at the various angles is made possible by varying these angles. A mask holder is attached to the light source lamp 1 to control the size of the light source. When the images are mirrored in a clear film not subjected to the antidazzle treatment, the inclination of the luminance distribution is nearly 90 deg.. If there is the antidazzle property, the mirroring-in images are blurred and the inclination of the luminance distribution is diminished. The reflected image brightness is, thereupon, quantified by the inclination of the luminance distribution. The reflected image brightness of the antidazzle film is confined to <=70.
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