šŸ”„šŸ”„ Donā€™t Miss Out on Our End of Autumn Sale. If you have any questions, feel free to click the bottom right corner to contact our customer service..

Concat us[email protected]
Shopping Cart

No products in the cart.

šŸ”
BS IEC 62595-2-5:2021

BS IEC 62595-2-5:2021

$198.66

Display lighting unit – Measurement method for optical quantities of non-planar light sources

Published By Publication Date Number of Pages
BSI 2021 54
PDF Format Searchable Printable Preview Now
Guaranteed Safe Checkout
Category:

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. Weā€™re here to assist you 24/7.
Email:[email protected]

IEC 62595-2-5:2021 specifies the measurement methods for measuring the optical characteristics of convex and concave cylindrical light sources. These non-planar light sources (NPLSs) can have either a continuous, distinct, segmented or block-wised light radiating surface, for example OLED panels, integrated LEDs, integrated mini-LEDs, micro-LEDs, laser diodes, each being either monochromatic or polychromatic.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 CONTENTS
7 FOREWORD
9 INTRODUCTION
10 1 Scope
2 Normative references
11 3 Terms, definitions, abbreviated terms and letter symbols
3.1 Terms and definitions
3.2 Abbreviated terms
12 3.3 Letter symbols (quantity symbols/unit symbols)
Tables
Table 1 ā€“ Letter symbols (quantity symbols/unit symbols)
13 4 Measurement devices
4.1 General
4.2 Spot-type light measuring device
Figures
Figure 1 ā€“ Cartesian and spherical coordinate systems for NPLS measurement
14 4.3 Spectroradiometer (spectral radiance-meter)
4.4 Electrical measurement devices
4.4.1 Current meter
Figure 2 ā€“ Example of LMD with the viewing area surrounding the measurement field
15 4.4.2 Voltage meter
4.5 Luminous flux measurement devices
4.5.1 General
4.5.2 Luminous flux
Figure 3 ā€“ Current and voltage measurements using an ammeter between points C and D and a voltage meter between points A and B
16 Figure 4 ā€“ Geometry of 4Ļ€-sphere measurement
17 4.5.3 Sample stage
5 General measuring conditions
5.1 Standard conditions
Figure 5 ā€“ Measuring points on convex and concave DUTs based on the setups of Figure 4
Figure 6 ā€“ Example of a mirror type goniometric system
18 5.2 Darkroom conditions
5.3 Measurement setup
5.4 Setting the electrical characteristics of measurement devices
5.4.1 Conditions
5.4.2 Current
5.4.3 Voltage
5.4.4 Power
19 5.4.5 Warm-up time
6 Optical measurement methods
6.1 General
6.2 Conditions
6.3 Perceptual visual quality
6.3.1 General
6.3.2 Procedures
20 6.4 Lateral and directional scanning configuration
6.4.1 General
6.4.2 Lateral scanning configuration
21 Figure 7 ā€“ Planar LS and cylindrical LS (NPLS) in lateral scanning measurement arrangements
22 6.4.3 Directional scanning configuration
23 Figure 8 ā€“ Planar LS and cylindrical LS (NPLS) in a directional scanning arrangement
24 6.5 Depth-of-field and depth-of-focus in measurement
6.5.1 General
6.5.2 Front and rear depth-of-field (DoF)
Figure 9 ā€“ Pictorial illustration of depth-of-field, depth-of-focus and circle of confusion for an LMD
25 6.5.3 Front and rear depth-of-focus (dof)
6.6 Measurement procedures
6.6.1 General
6.6.2 Cylindrical LS mounting for lateral measurements
Figure 10 ā€“ Rear depth-of-field in the measurement setup of a cylindrical light source
26 6.6.3 Lateral luminance
6.6.4 Lateral luminance uniformity
27 6.6.5 Lateral chromaticity and chromaticity variation
6.6.6 Directional luminance
28 6.6.7 Directional luminance variations
6.6.8 Directional chromaticity and chromaticity variation
29 6.6.9 Luminous flux
32 7 Precautions
7.1 Remarks
33 7.2 Further remarks
7.2.1 General
7.2.2 Report
34 Annexes
Annex A (informative) Measurement field on the curved light source
A.1 General
A.2 NPLS curvature and measurement field
Figure A.1 ā€“ Schematic diagram of the optical characteristics measurement of planar, convex and concave cylindrical light source
35 A.3 MFs on planar, convex and concave cylindrical LSs
37 Annex B (informative) Planar light source measurement
B.1 General
B.2 Luminance meter and measurement field
Table B.1 ā€“ Example of a measurement result
38 Annex C (informative) Contours of light measurement fields on planar, cylindrical convex, and concave light sources
C.1 General
C.2 MF contour on a non-tilt and tilt planar DUT
Figure C.1 ā€“ Geometry of intersections of a cone anda plane in non-tilt and tilt conditions
39 C.3 Projection of an MF contour on the outer surface of a cylindrical DUT
Figure C.2 ā€“ Expanded plane of a cone and intersection lines with tilt and non-tilt planes (see Figure C.1)
Figure C.3 ā€“ Simulated intersections of three planar light sources with a cone (measurement field angle, i.e., a solid angle)
40 Figure C.4 ā€“ Geometry for calculating the intersection of a cone (measurement field angle; solid angle) and a cylinder (light source)
Figure C.5 ā€“ Intersection of a cone and a cylindrical DUT
42 Figure C.6 ā€“ Measurement of a convex cylindrical LS and the possible cases, and illustration of the effect of the measurement field angle cone and the angleof inclination of the measurement direction
43 Annex D (informative) LMD aperture and inclination angle on a cylindrical light source
D.1 General
D.2 Inclination angle
Figure D.1 ā€“ Measurement of a cylindrical light source fora non-zero aperture LMD and fixed measurement field (b)
44 D.3 Inclination angle variation
Figure D.2 ā€“ Variation of inclination angle, (D, with DLMD for each cylindrical LS of radius R
45 D.4 Depth-of-field
Figure D.3 ā€“ Variation of rear DoF with DLMD (for measurement field angles of 2Ā°, 1Ā°, 0,2Ā°, 0,1Ā°) for zero aperture LMD
Table D.1 ā€“ Variation of inclination angles with half of the MF size; b/2
47 D.5 Measurement field size on the cylindrical light source
Figure D.4 ā€“ Rear DoF variations with measurement distance DLMD, for light source of R2 (R = 20 mm, 35 mm, 50 mm) in Annex A
49 Figure D.5 ā€“ Variation of measurement field with DLMD for cylindrical light sources of radii (=R2) R = 20 mm, 35 mm, 50 mm, and measurement field angles of Ī² = 2Ā°, 1Ā°, 0,2Ā°, 0,1Ā°
51 Figure D.6 ā€“ Difference in variation of MF with DLMD for radii (=R2) R = 20 mm, 35 mm, 50 mm
52 Bibliography

Related products

BS IEC 62595-2-5:2021
$198.66