{"id":341374,"date":"2024-10-19T23:56:05","date_gmt":"2024-10-19T23:56:05","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-21395-12020\/"},"modified":"2024-10-25T23:08:04","modified_gmt":"2024-10-25T23:08:04","slug":"bs-iso-21395-12020","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-21395-12020\/","title":{"rendered":"BS ISO 21395-1:2020"},"content":{"rendered":"

This document specifies the measuring method for the refractive index of optical glasses with the accuracy within 1 \u00d7 10?5<\/sup> used in the spectral range from 365 nm to 2 400 nm.<\/p>\n

Additional information on how to apply the refractive index in the dispersion and the various dispersion formulae of optical glasses is given in Annex A<\/span> and Annex B<\/span>.<\/p>\n

PDF Catalog<\/h4>\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>\nNational foreword <\/td>\n<\/tr>\n
6<\/td>\nForeword <\/td>\n<\/tr>\n
7<\/td>\nIntroduction <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references
3 Terms and definitions
4 Principle <\/td>\n<\/tr>\n
10<\/td>\n5 Measuring apparatus
5.1 General construction <\/td>\n<\/tr>\n
11<\/td>\n5.2 Goniometer
5.3 Light source <\/td>\n<\/tr>\n
12<\/td>\n5.4 Detector
6 Specimen prism
6.1 General
6.2 Dimensions <\/td>\n<\/tr>\n
13<\/td>\n6.3 Apex angle
6.4 Flatness
7 Environmental condition of measurement
7.1 Temperature
7.2 Humidity
7.3 Atmospheric pressure
8 Measurement
8.1 Adjustment of the measurement specimen prism <\/td>\n<\/tr>\n
14<\/td>\n8.2 Measurement of the apex angle, \u03b1 <\/td>\n<\/tr>\n
15<\/td>\n8.3 Measurement of the angle of minimum deviation, \u03b4min <\/td>\n<\/tr>\n
16<\/td>\n9 Indication
10 Test report <\/td>\n<\/tr>\n
17<\/td>\nAnnex A (informative) Calculation of principal dispersion, Abbe number, partial dispersion and relative partial dispersion <\/td>\n<\/tr>\n
20<\/td>\nAnnex B (informative) Dispersion formulae for calculation of refractive index at arbitrary wavelength <\/td>\n<\/tr>\n
22<\/td>\nAnnex C (informative) Correction of refractive index for temperature, humidity and atmospheric pressure <\/td>\n<\/tr>\n
24<\/td>\nAnnex D (informative) Other measurement methods of the apex angle <\/td>\n<\/tr>\n
26<\/td>\nAnnex E (informative) Other measurement methods of the angle of minimum deviation <\/td>\n<\/tr>\n
29<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Optics and photonics. Test method for refractive index of optical glasses – Minimum deviation method<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2020<\/td>\n30<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":341378,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-341374","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\/341374","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\/341378"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=341374"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=341374"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=341374"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}