The description and luminous calibration of cathode ray oscilloscope visual displays

Abstract

A description of a CRO display should include descriptions of: (1) typical display contents (e.g., a photograph), (2) CRO output parameters (e.g., refresh rate), and (3) luminous measurements. Luminous calibrations are unorthodox because CRO displays are discontinuous in space and in time, and because they are sources, not reflectors, of light. The appropriate luminous quantities are luminous intensity and the integral of luminous intensity (luminous directional energy, LDE); the appropriate measurements are of LDE per point and of LDE per unit line length. A simple calibration procedure is described, and the formulas relating these quantities to luminances are given. © 1971 Psychonomic Society, Inc.