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BSI PD IEC TR 62977-2-5:2018

BSI PD IEC TR 62977-2-5:2018

$167.15

Electronic display devices – Transparent displays. Measurements of optical characteristics

Published By Publication Date Number of Pages
BSI 2018 42
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This part of IEC 62977 describes the conditions and measuring methods for determining the displayed properties (on-screen) and the through-screen properties of transparent direct-view-type liquid crystal displays (LCDs) and those of organic light emitting diode (OLED) displays.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 CONTENTS
6 FOREWORD
8 1 Scope
2 Normative references
3 Terms and definitions
9 4 Measuring conditions
4.1 Standard measuring environmental conditions
4.2 Standard lighting conditions
4.2.1 Darkroom conditions
4.2.2 Ambient illumination conditions
10 4.2.3 Ambient illumination spectra
Tables
Table 1 – Standard ambient conditions
11 4.3 Standard setup conditions
4.3.1 Starting conditions of measurements
4.3.2 Standard measuring positions
4.3.3 Conditions of measuring equipment
Figures
Figure 1 – Measurement points
12 Figure 2 – Layout diagram of measurement setup
13 5 Measuring methods of transparent properties
5.1 Hemispherical transmittance factor with specular included
5.1.1 Purpose
5.1.2 Measuring conditions
14 5.1.3 Measuring method
15 5.2 Transmitted haze
5.2.1 General
5.2.2 Transmitted haze under hemispherical illumination
Figure 3 – Side view of measuring concept for the hemispherical transmittance factor measurement with specular included or excluded
17 5.2.3 Transmitted haze with directly incident light
Figure 4 – Schematic arrangement of haze measurement
Table 2 – Measuring conditions of the ports
19 Figure 5 – Schematic arrangement of the apparatus (TOP view)
20 5.3 Directional transmittance factor
5.3.1 Purpose
5.3.2 Measuring conditions
Table 3 – Measurements
21 5.3.3 Measuring method
22 5.4 Degree of clear distinction of see-through objects
5.4.1 General
5.4.2 Purity
Figure 6 – Side view of measuring concept for the hemispherical transmittance factor measurement with specular included or excluded
24 Figure 7 – Measuring configuration for purity measurement
Figure 8 – Test patterns for purity measurement
25 5.4.3 Clarity (measurement method using a stripe pattern with a rigid width.)
Table 4 – Measured example for purity
Table 5 – Example of reported specification of two dimensional LMD
26 Figure 9 – Measuring system and its configuration
27 Figure 10 – Example reference object and its configuration
Figure 11 – Luminance curve of reference object
28 5.4.4 Clarity (Measuring method using a stripe pattern with gradually changed width)
Figure 12 – Definition of test parameters
29 Figure 13 – Reference object and its configuration
30 5.5 Colour variation caused by a transparent display
5.5.1 Purpose
5.5.2 Measuring conditions
5.5.3 Measuring method
Figure 14 – The relationship between stripe frequency and Michelson contrast ratio
31 Figure 15 – Measuring configuration
32 6 Measuring methods of on-screen properties
6.1 Ambient contrast ratio
6.1.1 Purpose
6.1.2 Measuring conditions
Table 6 – Working example for colour variation index
33 6.1.3 Measuring method
34 6.2 Display ambient colour measurement
6.2.1 Purpose
6.2.2 Measuring conditions
6.2.3 Measuring method
35 6.3 Contrast ratio and colour coordinate with the incident illumination originating from objects behind the screen
6.3.1 Purpose
36 Figure 16 – Geometry of the transparent display and the bright background object
37 6.3.2 Measuring method with white light source
Figure 17 – Case with bright background
39 6.3.3 Measuring method with collimated or directional light source
Figure 18 – Measurement configuration for transparent display with background object
41 Bibliography

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BSI PD IEC TR 62977-2-5:2018
$167.15