{"id":375202,"date":"2024-10-20T02:42:27","date_gmt":"2024-10-20T02:42:27","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-14490-52021\/"},"modified":"2024-10-26T04:44:00","modified_gmt":"2024-10-26T04:44:00","slug":"bs-iso-14490-52021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-14490-52021\/","title":{"rendered":"BS ISO 14490-5:2021"},"content":{"rendered":"

This document specifies the test methods for the determination of the transmittance of telescopic systems and telescopic observational instruments.<\/p>\n

PDF Catalog<\/h4>\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>\n1 Scope
2 Normative references
3 Terms and definitions
4 Principle <\/td>\n<\/tr>\n
8<\/td>\n5 Test arrangement
5.1 General <\/td>\n<\/tr>\n
9<\/td>\n5.2 Radiation source and condenser
5.3 Monochromator or set of filters
5.4 Collimator
5.5 Aperture stop <\/td>\n<\/tr>\n
10<\/td>\n5.6 Specimen mounting
5.7 Integrating sphere
5.8 Radiation detector
5.9 Selectable diaphragm as field stop
6 Procedure
6.1 Preparation of the test arrangement
6.2 Determination of the measurement values <\/td>\n<\/tr>\n
11<\/td>\n6.3 Further test methods
7 Precision of the measurement
8 Presentation of the results
9 Analysis
9.1 Effective transmittance for photopic vision <\/td>\n<\/tr>\n
12<\/td>\n9.2 Effective transmittance for scotopic vision
10 Test report <\/td>\n<\/tr>\n
14<\/td>\nAnnex A (informative) Calibration procedure for the radiation detector\/measuring instrument <\/td>\n<\/tr>\n
17<\/td>\nAnnex B (informative) Trichromatic coefficients and colour contribution index <\/td>\n<\/tr>\n
22<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Optics and photonics. Test methods for telescopic systems – Test methods for transmittance<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2021<\/td>\n24<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":375205,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-375202","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\/375202","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\/375205"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=375202"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=375202"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=375202"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}