{"id":180328,"date":"2024-10-19T11:15:36","date_gmt":"2024-10-19T11:15:36","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ies-lm-78-2017\/"},"modified":"2024-10-25T03:33:01","modified_gmt":"2024-10-25T03:33:01","slug":"ies-lm-78-2017","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ies\/ies-lm-78-2017\/","title":{"rendered":"IES LM 78 2017"},"content":{"rendered":"

This approved method describes the procedures to be followed and precautions to be observed in performing reproducible measurements of total flux of lamps and luminaires using integrating sphere measurement systems. Two types of integrating sphere systems are presented, one employing a V(?) corrected photometer head, and another employing a spectroradiometer as the detector. In addition to the specifics of the two measurement systems, the common qualities and measurement techniques are discussed along with calibration and uncertainty analysis considerations.<\/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\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nCover <\/td>\n<\/tr>\n
3<\/td>\nCopyright <\/td>\n<\/tr>\n
6<\/td>\nContents <\/td>\n<\/tr>\n
8<\/td>\nFOREWORD
INTRODUCTION
1.0 SCOPE
2.0 NORMATIVE REFERENCES
3.0 NOMENCLATURE AND DEFINITIONS
3.1 Total Luminous Flux
3.2 Sphere Efficacy <\/td>\n<\/tr>\n
9<\/td>\n3.3 Sphere Responsivity
4.0 PHYSICAL AND ENVIRONMENTAL TEST CONDITIONS
5.0 INTEGRATING SPHERE EQUIPMENT
5.1 Integrating Sphere Geormetry: 4p <\/td>\n<\/tr>\n
10<\/td>\n5.2 Integrating Sphere Geormetry: 2p
5.3 Sphere Coating <\/td>\n<\/tr>\n
12<\/td>\n5.4 Baffle
5.5 Auxiliary Lamp <\/td>\n<\/tr>\n
13<\/td>\n5.6 Photometer Detection <\/td>\n<\/tr>\n
14<\/td>\n5.7 Spectroradiometer Detection
5.8 Lamp Holder and Mounting Hardware <\/td>\n<\/tr>\n
15<\/td>\n5.9 Temperature Sensor
5.10 Electrical Circuits
6.0 CALIBRATION STANDARDS
6.1 Incandescent Standard Lamps
6.2 Incandescent Reflector Lamps <\/td>\n<\/tr>\n
16<\/td>\n6.3 Discharge Standard Lamps
6.4 Solid-State Lighting Standard Products
6.5 Handling of Standards Lamps
6.6 Operation of Standard Lamps <\/td>\n<\/tr>\n
17<\/td>\n7.0 TEST PROCEDURES
7.1 Total Luminous and Total Spectral Spectral Radiant Flux Calibration
7.1.1 Integrating Sphere with Photometer
7.1.2 Integrating Sphere with Spectroradiometer
7.2 Test Lamp Measurement Procedure
7.2.1 Integrating Sphere with Photometer <\/td>\n<\/tr>\n
18<\/td>\n7.2.2 Integrating Sphere with SpectroRadiometer
7.3 Sources of Error
7.3.1 Self-Absorption <\/td>\n<\/tr>\n
19<\/td>\n7.3.2 Spectral Mismatch <\/td>\n<\/tr>\n
20<\/td>\n7.3.3 Sphere Angular Non-uniformity
7.3.4 Near-Field Absorption
7.3.4 Temperature Effects <\/td>\n<\/tr>\n
21<\/td>\n8.0 UNCERTAINTY EVALUATION
9.0 MAINTENANCE OF INTEGRATING SPHERES <\/td>\n<\/tr>\n
22<\/td>\nINFORMATIVE REFERENCES
ANNEX A \u2013 BASIC INTEGRATING SPHERE THEORY <\/td>\n<\/tr>\n
24<\/td>\nANNEX B \u2013 MEASUREMENT OF THE RELATIVE
\n SPECTRAL THROUGHPUT OF AN INTEGRATING SPHERE <\/td>\n<\/tr>\n
25<\/td>\nANNEX C \u2013 CORRECTION FOR THE ANGULAR
\n NON-UNIFORMITY ERRORS OF AN INTEGRATING SPHERE
ANNEX D \u2013 ALTERNATIVE GEOMETRIES AND CALIBRATION METHODS <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

IES LM-78 Approved Method for Total Luminous Flux Measurement of Lamps Using an Integrating Sphere Photometer<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
IES<\/b><\/a><\/td>\n2017<\/td>\n30<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":180332,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2665],"product_tag":[],"class_list":{"0":"post-180328","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-ies","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\/180328","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\/180332"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=180328"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=180328"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=180328"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}