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BS IEC 62977-2-7:2024

BS IEC 62977-2-7:2024

$142.49

Electronic displays – Measurements of optical characteristics. Tiled displays

Published By Publication Date Number of Pages
BSI 2024 26
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PDF Catalog

PDF Pages PDF Title
2 undefined
4 CONTENTS
6 FOREWORD
8 INTRODUCTION
Figures
Figure 1 – Example of tiled display system
9 1 Scope
2 Normative references
3 Terms, definitions, and abbreviated terms
3.1 Terms and definitions
10 3.2 Abbreviated terms
4 Standard measuring equipment
4.1 Light measuring devices
11 4.2 Viewing direction coordinate system
Figure 2 – Representation of the viewing direction(equivalent to the direction of measurement) by the angle of inclination, θ,and the angle of rotation (azimuth angle), ϕ, in a polar coordinate system
12 5 Measuring conditions
5.1 Standard measuring environmental conditions
5.2 Warm-up time
5.3 Standard measuring darkroom conditions
5.4 Standard set-up conditions
13 6 Measurement methods
6.1 Alignment measurements
6.1.1 General
6.1.2 Measuring conditions
6.1.3 Measurement method of the seam width
Figure 3 – DUT Installation conditions
15 Figure 4 – Measurement locations of X-Y plane alignment
Figure 5 – Full grey pattern, 1 × 1 horizontal grille pattern,and 1 × 1 vertical grille pattern
16 Figure 6 – Example of window width calculation
Figure 7 – Luminance profile before and after WMA
Figure 8 – Example of seam width and depth calculation
17 6.1.4 Alignment along the z-axis direction
6.1.5 Alignment of tilt
Figure 9 – Measurement location of z-axis alignment
18 6.2 Visual uniformity
6.2.1 General
Figure 10 – Measurement locations of alignment of tilt
19 6.2.2 Measuring conditions
6.2.3 Uniformity measurement locations
Figure 11 – Example measurement locations of 1 × 2 tiled display elements
20 6.2.4 Luminance uniformity
Figure 12 – Example measurement locations of 2 × 2 tiled display elements
21 6.2.5 Chromaticity non-uniformity
6.2.6 Contrast ratio uniformity
22 6.2.7 Reflectance non-uniformity
23 6.3 Viewing direction dependence
6.3.1 General
6.3.2 Measuring conditions
6.3.3 Luminance uniformity and chromaticity non-uniformity at viewing direction
24 Figure 13 – Example of luminance uniformity at viewing direction
25 Bibliography

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BS IEC 62977-2-7:2024
$142.49