{"id":411149,"date":"2024-10-20T05:43:49","date_gmt":"2024-10-20T05:43:49","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iec-62906-5-42018-2\/"},"modified":"2024-10-26T10:34:42","modified_gmt":"2024-10-26T10:34:42","slug":"bs-iec-62906-5-42018-2","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iec-62906-5-42018-2\/","title":{"rendered":"BS IEC 62906-5-4:2018"},"content":{"rendered":"

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
4<\/td>\nCONTENTS <\/td>\n<\/tr>\n
7<\/td>\nFOREWORD <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references
3 Terms, definitions, letter symbols and abbreviated terms
3.1 Fundamental terms
3.2 Terms related to colour speckle distribution <\/td>\n<\/tr>\n
10<\/td>\n3.3 Terms related to spatial variation
3.4 Letter symbols <\/td>\n<\/tr>\n
11<\/td>\n3.5 Abbreviated terms
4 Theory of colour speckle
4.1 General
4.2 Mechanism for generating colour speckle <\/td>\n<\/tr>\n
13<\/td>\n5 Calculation methods of colour speckle
5.1 General <\/td>\n<\/tr>\n
14<\/td>\n5.2 Measuring method of spectral behaviour of BGR light sources
5.3 Target chromaticity
Figures
Figure 1 \u2013 Two speckle measuring methods and their flow charts <\/td>\n<\/tr>\n
15<\/td>\nFigure 2 \u2013 Target chromaticity and colour gamut
Figure 3 \u2013 SB,G,R(\u03bb) with an FWHM of 2 nm <\/td>\n<\/tr>\n
16<\/td>\n5.4 Adjustment of BGR power ratio <\/td>\n<\/tr>\n
17<\/td>\n5.5 Calculation method (a) using BGR speckle contrast Cs-B, Cs-G, Cs-R
5.5.1 General
Figure 4 \u2013 Adjustment method of BGR power ratio <\/td>\n<\/tr>\n
18<\/td>\n5.5.2 Examples of measured distributions
Figure 5 \u2013 Colour speckle distribution for CsB = 100 %, CsG = 100 %, CsR = 100 % <\/td>\n<\/tr>\n
19<\/td>\nFigure 6 \u2013 Photometric speckle distribution for CsB = 100 %, CsG = 100 %, CsR = 100 % <\/td>\n<\/tr>\n
20<\/td>\nFigure 7 \u2013 Colour speckle distribution for CsB = 50 %, CsG = 50 %, CsR = 50 %
Figure 8 \u2013 Photometric speckle distribution for CsB = 50 %, CsG = 50 %, CsR = 50 % <\/td>\n<\/tr>\n
21<\/td>\nFigure 9 \u2013 Colour speckle distribution for CsB = 10 %, CsG = 10 %, CsR = 10 % <\/td>\n<\/tr>\n
22<\/td>\n5.6 Evaluation metrics
Figure 10 \u2013 Photometric speckle distribution for CsB = 10 %, CsG = 10 %, CsR = 10 % <\/td>\n<\/tr>\n
23<\/td>\n5.7 Calculation method (b) using the measured spatial distribution of BGR monochromatic speckles
5.7.1 General
5.7.2 Examples of measured distributions
Tables
Table 1 \u2013 Values of measurement metrics for the calculated examples <\/td>\n<\/tr>\n
24<\/td>\nFigure 11 \u2013 Colour speckle distribution for CsB = 9,2 %, CsG = 9,7 %,CsR = 9,2 % obtained by method (b) <\/td>\n<\/tr>\n
25<\/td>\n5.7.3 Comparison between methods (a) and (b)
Figure 12 \u2013 Colour speckle distribution for CsB = 9,2 %, CsG = 19,2 %,CsR = 23,2 % obtained by method (b) <\/td>\n<\/tr>\n
26<\/td>\nFigure 13 \u2013 Colour speckle distribution for CsB = 9,2 %, CsG = 9,7 %,CsR = 9,2 % obtained by method (a)
Figure 14 \u2013 Colour speckle distribution for CsB = 9,2 %, CsG = 19,2 %,CsR = 23,2 % obtained by method (a) <\/td>\n<\/tr>\n
27<\/td>\n5.7.4 Elimination of the background effects
Table 2 \u2013 Values of measurement metrics for the examples in Figure 11 to Figure 14 <\/td>\n<\/tr>\n
28<\/td>\nFigure 15 \u2013 Raw data of BGR speckle distributions (upper row) and post-processed data (lower row) for BGR monochromatic speckles (left: B, centre: G, right: R)
Figure 16 \u2013 Colour speckle distribution directly using the raw data in Figure 15 <\/td>\n<\/tr>\n
29<\/td>\nFigure 17 \u2013 Colour speckle distribution for CsB = 16,2 %, CsG = 17,4 %, CsR = 17,3 % obtained by indirect measuring method (a)
Table 3 \u2013 Values of measurement indices for the examples in Figure 16 and Figure 17 <\/td>\n<\/tr>\n
30<\/td>\n5.8 Error analysis based on data size
Figure 18 \u2013 Calculated average chromaticity values of the colour speckle distribution with respect to data size for CsB = CsG = CsR = 80 % <\/td>\n<\/tr>\n
31<\/td>\nFigure 19 \u2013 Calculated average values of the normalized speckle illuminance speckle distribution and the normalized monochromatic speckle intensity distribution with respect to data size for CsB = CsG = CsR = 80 %
Figure 20 \u2013 Calculated average chromaticity values of the colour speckle distribution with respect to data size for CsB = CsG = CsR = 60 % <\/td>\n<\/tr>\n
32<\/td>\nFigure 21 \u2013 Calculated average values of the normalized speckle illuminance speckle distribution and the normalized monochromatic speckle intensity distribution with respect to data size for CsB = CsG = CsR = 60 %
Figure 22 \u2013 Calculated average chromaticity values of the colour speckle distribution with respect to data size for CsB = CsG = CsR = 40 % <\/td>\n<\/tr>\n
33<\/td>\nFigure 23 \u2013 Calculated average values of the normalized speckle illuminance speckle distribution and the normalized monochromatic speckle intensity distribution with respect to data size for CsB = CsG = CsR = 40 %
Figure 24 \u2013 Calculated average chromaticity values of the colour speckle distribution with respect to data size for CsB = CsG = CsR = 20 % <\/td>\n<\/tr>\n
34<\/td>\n6 Direct measuring methods of colour speckle
6.1 General
Figure 25 \u2013 Calculated average values of the normalized speckle illuminance speckle distribution and the normalized monochromatic speckle intensity distribution with respect to data size for CsB = CsG = CsR = 20 % <\/td>\n<\/tr>\n
35<\/td>\n6.2 Fundamental design of LMD for colour speckle measurement
Figure 26 \u2013 Example of LMDs using XYZ filters for colour speckle measurement <\/td>\n<\/tr>\n
36<\/td>\n6.3 Colour speckle measuring method using LMD with XYZ filters
Figure 27 \u2013 Example of LMDs using BGR filters for colour speckle measurement <\/td>\n<\/tr>\n
37<\/td>\n6.4 Colour speckle measuring method using LMD with BGR filters
Figure 28 \u2013 Example of measurement geometriesfor colour speckle using an LMD with XYZ filters <\/td>\n<\/tr>\n
38<\/td>\n7 Measuring methods related to spatial variation
7.1 General
7.2 Angular colour speckle variation
Figure 29 \u2013 Example of measurement geometriesfor colour speckle using an LMD with BGR filters <\/td>\n<\/tr>\n
39<\/td>\n7.3 Photometric speckle contrast uniformity\/non-uniformity
Figure 30 \u2013 Representation of the viewing direction, or direction of measurement, defined by the angle of inclination \u03b8, and the angle of rotation (azimuth angle ( )in a polar coordinate system <\/td>\n<\/tr>\n
40<\/td>\n7.4 Colour speckle variance\/covariance non-uniformity <\/td>\n<\/tr>\n
41<\/td>\nAnnex A (informative) Complementary explanation of colour speckle
Figure A.1 \u2013 Photograph of colour speckle <\/td>\n<\/tr>\n
42<\/td>\nAnnex B (informative) Examples of colour speckle distributions
B.1 Colour speckle distributions (one of the BGR: 90 %, the others: 1 %)
Figure B.1 \u2013 Colour speckle distribution for CsB = 90 %, CsG = 1 %, CsR = 1 % <\/td>\n<\/tr>\n
43<\/td>\nFigure B.2 \u2013 Photometric speckle distribution for CsB = 90 %, CsG = 1 %, CsR = 1 % <\/td>\n<\/tr>\n
44<\/td>\nFigure B.3 \u2013 Colour speckle distribution for CsB = 1 %, CsG = 90 %, CsR = 1 %
Figure B.4 \u2013 Photometric speckle distribution for CsB = 1 %, CsG = 90 %, CsR = 1 % <\/td>\n<\/tr>\n
45<\/td>\nB.2 Colour speckle distributions (two of the BGR: 90 %, the other: 1 %)
Figure B.5 \u2013 Colour speckle distribution for CsB = 1 %, CsG = 1 %, CsR = 90 %
Figure B.6 \u2013 Photometric speckle distribution for CsB = 1 %, CsG = 1 %, CsR = 90 % <\/td>\n<\/tr>\n
46<\/td>\nFigure B.7 \u2013 Colour speckle distribution for CsB = 90 %, CsG = 1 %, CsR = 90 % <\/td>\n<\/tr>\n
47<\/td>\nFigure B.8 \u2013 Photometric speckle distribution for CsB = 90 %, CsG = 1 %, CsR = 90 %
Figure B.9 \u2013 Colour speckle distribution for CsB = 1 %, CsG = 90 %, CsR = 90 % <\/td>\n<\/tr>\n
48<\/td>\nFigure B.10 \u2013 Photometric speckle distribution for CsB = 1 %, CsG = 90 %, CsR = 90 %
Figure B.11 \u2013 Colour speckle distribution for CsB = 90 %, CsG = 90 %, CsR = 1 % <\/td>\n<\/tr>\n
49<\/td>\nFigure B.12 \u2013 Photometric speckle distribution for CsB = 90 %, CsG = 90 %, CsR = 1 % <\/td>\n<\/tr>\n
50<\/td>\nAnnex C (informative) Calibration of XYZ errors
C.1 General
C.2 Formulation of XYZ mismatches <\/td>\n<\/tr>\n
51<\/td>\nFigure C.1 \u2013 Deviated values (marker points) and ideal colour matching functions
Figure C.2 \u2013 Correct plot by spectral measurements and plot with XYZ errors
Table C.1 \u2013 Mismatch coefficients <\/td>\n<\/tr>\n
52<\/td>\nC.3 Calibration of the mismatched XYZ errors using the true BGR chromaticity values <\/td>\n<\/tr>\n
53<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Laser display devices – Optical measuring methods of colour speckle<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2022<\/td>\n54<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":411157,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-411149","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/411149","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/411157"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=411149"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=411149"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=411149"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}