Reflection Measurements and Uncertainties Using Sampling Spheres on Flat, Convex, and Concave Displays

摘要

A sampling sphere was designed to measure hemispherical diffuse reflection on flat and curved displays. Interchangeable sample ports eliminate the gap between sample port and convex or concave displays. We investigate the measurement uncertainties by comparing sampling spheres to a large integrating sphere, flat to curved display shapes, and results from different labs. The hemispherical diffuse reflectance of flexible e-paper does not significantly depend on curvature.