This standard specifies the photometric testing methods for projection lighting fixtures and provides guidance for laboratory facilities, testing, and photometric testing reports for projection lighting fixtures. This standard is applicable to the photometric testing of projection lighting fixtures (hereinafter referred to as projection lighting fixtures) that use electric light sources, have stable visual lighting, and are installed indoors and outdoors. Spotlights, ceiling lights, etc. used in movies or stages can be tested according to this standard. This standard is not applicable to the photometric testing of road lighting fixtures, nor is it applicable to lamps with a half peak edge angle less than 2 ° (such as searchlights). This standard should be used in conjunction with GB/T 9468. 2 Normative References: The clauses in the following documents become clauses of this standard through reference in this standard. For dated reference documents, all subsequent amendments (excluding corrected content) or revisions are not applicable to this standard. However, parties to agreements based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version applies to this standard. GB/T 9468-2008 General Requirements for Luminaire Distribution Photometric Measurement EN 13032-1:2004: Measurement and Expression of Photometric Data for Luminaires and Luminaires: Part 1: Measurement and File Format