CIE 207 PDF

CIE 207 – Calculation and Presentation of Unified Glare Rating Tables for Indoor Lighting Luminaires

This report has been prepared to assist luminaire suppliers and lighting designers inthe production of UGR tables for luminaires in preset arrays at 1:1 spacing to heightratio. This data is needed for the verification of conformity to the limiting UGR by theUGR tabular method specified in clause 6.2 of the Standard ISO 8995-1:2002(E)/CIE S 008/E:2001 “Lighting of Workplaces – Part 1: Indoor”. The limiting UGR valuesare recommended in clause 5 of this standard. The report makes use of the basicUGR equation, described in CIE 117-1995, gives tables of preset values for thestandard conditions and in step by step describes the calculation process needed togenerate the uncorrected UGR table. The process is further demonstrated by aworked example of UGR calculation for a disymmetric distribution luminaire in a room2H x 4H. The report also gives the uncorrected UGR table for this luminaire whichcan be used to validate software designed for the production of the UGR table.