Artificial day light for the assessment of colours: Part 1 Illuminant for colour matching and colour appraisal

This document establishes the technical requirements and specifications for artificial daylight sources used in the field of color evaluation. It specifically addresses the first part of a comprehensive series, focusing on the illumination characteristics necessary for accurate color matching and assessment. The standard defines the spectral power distribution that must be met by light sources to simulate natural daylight conditions with high fidelity. It outlines the criteria for color rendering and the tolerance limits allowed for variations in the light spectrum to ensure consistent results across different testing environments. The specifications provided are intended to guide the design and calibration of lighting equipment utilized in industrial color control, quality assurance processes, and visual evaluation tasks. Adherence to these parameters ensures that color assessments conducted under artificial lighting yield results comparable to those obtained under natural daylight, thereby minimizing discrepancies in color perception and production outcomes. The document serves as a foundational reference for professionals involved in color science, providing a clear framework for maintaining uniformity in visual evaluation procedures.