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BS IEC 61747-30-5:2019

BS IEC 61747-30-5:2019

$142.49

Liquid crystal display devices – Optical measuring methods of transmissive transparent LCD modules

Published By Publication Date Number of Pages
BSI 2019 30
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This part of IEC 61747 specifies the standard measurement conditions and measuring methods for determining the optical properties of transparent liquid crystal display modules which operate in a transmissive mode.

More specifically, this document focuses on three particular aspects of the transparent properties, i.e. transmittance, haze, and image distortion.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 CONTENTS
6 FOREWORD
8 1 Scope
2 Normative references
3 Terms, definitions, symbols and units
9 4 Measurement conditions
4.1 Standard measurement environmental conditions
10 4.2 Standard measurement darkroom conditions
4.3 Standard measurement locations
5 Measurement methods of on-screen properties
5.1 Measurement equipment and its setup
Figures
Figure 1 – Measurement points
11 5.2 Measurement methods
Figure 2 – Measurement equipment and its configuration
12 6 Measurement methods of through-screen properties
6.1 Luminous transmittance and its uniformity
6.1.1 Purpose
6.1.2 Measurement conditions
6.1.3 Measurement methods
Figure 3 – Measurement configuration with light source
13 6.2 Transmitted haze
6.2.1 Purpose
6.2.2 Measurement conditions
6.2.3 Test apparatus
15 6.2.4 Procedure
Figure 4 – Schematic arrangement of the apparatus (TOP view)
Tables
Table 1 – Measurements
16 6.2.5 Results
6.2.6 Reporting
6.3 Colour shift
6.3.1 Purpose
6.3.2 Measurement conditions
6.3.3 Test apparatus
17 6.3.4 Procedure
6.3.5 Reporting
Figure 5 – Measurement system and its configuration
18 6.4 Contrast ratio offset
6.4.1 Purpose
6.4.2 Measurement conditions
6.4.3 Test apparatus
6.4.4 Procedure
Figure 6 – Reference object and its configuration
Table 2 – Measurement results
19 6.4.5 Reporting
6.5 Sharpness
6.5.1 Purpose
6.5.2 Measuring conditions
6.5.3 Test apparatus
Table 3 – Data summary for contrast offset
20 6.5.4 Procedure
6.5.5 Results
Figure 7 – Example reference object and its configuration
Table 4 – Example of reported specification of two-dimensional LMD
21 Figure 8 – Luminance curve of reference object
22 6.5.6 Reporting
6.6 MTF and Michelson contrast ratio
6.6.1 Purpose
6.6.2 Measurement conditions
6.6.3 Measurement methods
Figure 9 – Definition of test parameters
23 Figure 10 – Reference object and its configuration
24 6.6.4 Reporting
7 Contrast ratio and colour coordinates with the incident illumination originating from objects behind the screen
7.1 Purpose
Figure 11 – Relationship between stripe frequency and MTF
25 Figure 12 – Geometry of the transparent display and the bright background object
Figure 13 – Case with bright backgrounds
26 7.2 Measurement method with white light source
7.2.1 General
7.2.2 Measurement conditions
7.2.3 Measurement method
27 7.3 Measurement method with collimated or directional light source
7.3.1 Purpose
7.3.2 Measurement conditions
Figure 14 – Measurement configuration for transparent display with background object
28 7.3.3 Measurement method background
7.3.4 Measurement method
29 Bibliography

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BS IEC 61747-30-5:2019
$142.49