# 17-25-097

forty-five degree directional geometry

45°x geometry

irradiation of reflecting materials at 45° to the normal, at one azimuth angle

Note 1 to entry: Forty-five degree directional geometry emphasizes texture and directionality.

Note 2 to entry: The "x" in the synonym indicates that the azimuthal direction of the incident beam is in the x direction on the reference plane.

Note 3 to entry: This entry was numbered 17-470 in CIE S 017:2011.

Publication date: 2020-12