{"id":246650,"date":"2024-10-19T16:13:39","date_gmt":"2024-10-19T16:13:39","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iso-109421998\/"},"modified":"2024-10-25T11:16:47","modified_gmt":"2024-10-25T11:16:47","slug":"bs-en-iso-109421998","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iso-109421998\/","title":{"rendered":"BS EN ISO 10942:1998"},"content":{"rendered":"

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nBRITISH STANDARD <\/td>\n<\/tr>\n
2<\/td>\nNational foreword <\/td>\n<\/tr>\n
4<\/td>\nForeword
Endorsement notice
Contents <\/td>\n<\/tr>\n
7<\/td>\n1 Scope
2 Normative references
3 Definitions
ophthalmoscope
direct ophthalmoscope
viewing lens
auxiliary lens
ophthalmoscope graticule
illuminating system
viewing system <\/td>\n<\/tr>\n
8<\/td>\nfield of view
field of illumination
4 Classification
5 Requirements
5.1 General
5.2 Optical requirements
Table 1 Requirements for optical specifications <\/td>\n<\/tr>\n
9<\/td>\nTable 2 Requirements for optical accuracy
5.3 Construction and function of the viewing system
5.4 Construction and function of the illumination system
5.5 Optical radiation hazard with direct ophthalmoscopes <\/td>\n<\/tr>\n
11<\/td>\n6 Test methods
6.1 Checking the optical and functional requirements
6.2 Checking optical radiation safety for direct ophthalmoscopes <\/td>\n<\/tr>\n
12<\/td>\nFigure 1 Test configuration for measuring the field of view
7 Accompanying documents
8 Marking <\/td>\n<\/tr>\n
13<\/td>\nAnnex A (normative)
Optical radiation hazard
Spectral weighting functions for retinal hazard analysis
Determination of spectrally weighted source radiance <\/td>\n<\/tr>\n
15<\/td>\nAnnex B (informative)
Photometric measures
Radiance
Example for determination of radiance
Figure B.1 Solid angle 7 subtended by a light source <\/td>\n<\/tr>\n
16<\/td>\nRadiant flux
Annex C (informative)
Information to be provided on the avoidance of over-exposure to potentially hazardo… <\/td>\n<\/tr>\n
17<\/td>\nAnnex D(normative)
Normative references to international publications with their relevant European publi…
Annex ZA (informative)
A-deviations <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Ophthalmic instruments. Direct ophthalmoscopes<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2001<\/td>\n18<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":246655,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[145,2641],"product_tag":[],"class_list":{"0":"post-246650","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-11-040-70","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/246650","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\/246655"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=246650"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=246650"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=246650"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}