Fast Spectral BRDF & BTDF Measurements for Characterization of Displays and Components

Abstract

SUMMARYIn the present paper we show how to obtain rapidly the spectral BRDF and BTDF of different display components or transparent displays using Fourier optics system under different illumination configurations. Results can be used to simulate the entire structure of a LCD display or to predict transparent display performances under various illuminations.

Developmental Trends in the Application and Measurement of the Bidirectional Reflection Distribution Function

“…The SOC series BRDF test device developed by US SOC (Surface Optics Corporation) is one of the typical commercial device that has achieved the establishment of a large BRDF database [59]. In 2016, Bother et al combined Fourier optics with the BRDF to measure the spectral emission of displays [60]. In 2019, Luo et al designed a set of optical paths to measure the surface tension and contact angle of liquids by means of light scattering, and achieved stable contact-free BRDF measurements of liquids using optical methods [61].…”

“…Devices capable of fast measurement are used to determine the reflective properties of the sample in hemispheric space in one shot, with the aid of the optical properties of special surfaces, special optical devices, and optical imaging techniques [34,37,[43][44][45][46][47][48]52,53,[60][61][62][63], or by increasing the area of the detector [49,51,85]. The measurement device uses a special surface reflector to eliminate part of the mechanical motion or increase the area of detection to measure the characteristics of reflection of the sample in hemispheric space at once.…”

Paper No S11.2: Spectral BRDF and BTDF of Display Optical Components

“…This capacity has been used to measure different types of surfaces and e‐papers and to evaluate the outdoor properties of displays . It is in particular possible to illuminate and to measure at the same angle in this system allowing backscattering investigation of cosmetic foundations for example .…”