CIE 170-2:2015 PDF Download

A standard known as CIE 170-2:2015 offers useful colorimetric tools connected to the basic chromaticity diagram with physiological axes. This is the second section of the paper; the first section concentrated on the CIE 2006 Cone Fundamentals specification. This second section provides chromaticity diagrams and spectrum luminous efficiency functions for use by experts in the subject.

The definition of cone-fundamental-based spectral luminous efficiency functions, which combine long-wave and middle-wave-sensitive cone fundamentals, is given in the report's introduction. The 2° and 10° photometric observers are both given these functions. These functions' accessibility enables the creation of MacLeod-Boynton chromaticity diagrams, which are based on cone basics and depict chromaticity as an equi-luminant plane.

The report also provides conversions of the cone basics into chromaticity coordinates and tristimulus values that can be used to compare the results with conventional CIE methods. The requirements for a colorimetric system are upheld, and a thorough explanation of the characteristics of spectrum tristimulus values is provided.

Tables and references are included in the report, and an Excel file containing them is available for download.