IEC TR 63158:2018 pdf download

IEC TR 63158:2018 pdf download.Equipment for general lighting purposes – Objective test method for stroboscopic effects of lighting equipment
1 Scope
This document describes an objective stroboscopic effect visibility (SVM) meter, which can be applied for performance testing of lighting equipment under different operational conditions. The stroboscopic effects considered in this document are limited to the objective assessment by a human observer of visible stroboscopic effects of temporal light modulation of lighting equipment in general indoor applications, with typical indoor light levels (> 1 00 lx) and with moderate movements of an observer or nearby handled object (< 4 m/s). Details on restriction of the applicability of the stroboscopic effect visibility measure is given in Clause A.1 . For assessing unwanted stroboscopic effects in other applications, such as the misperception of rapidly rotating or moving machinery in an industrial environment for example, other metrics and methods can be required. The object of this document is to establish a common and objective reference for evaluating the performance of lighting equipment in terms of stroboscopic effect. Temporal changes in the colour of the light (chromatic effects) are not considered in this test. This document describes the methodology for SVM and does not define any limits. The objective method and procedure described in this document are based on CIE TN 006:201 6 on temporal light artefacts (TLAs). The method described in this document can be applied to objectively assess the stroboscopic effect of lighting equipment that is powered from any type of source, AC mains, DC mains, battery fed or fed through an external dimmer.
2 Normative references
There are no normative references in this document.
3 Terms, definitions, abbreviated terms and symbols
3.1 Terms and definitions For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: • IEC Electropedia: available at http://www.electropedia.org/ • ISO Online browsing platform: available at http://www.iso.org/obp 3.1.1 auxiliary equipment AuxEq peripheral equipment that is part of the system under test 3.1.2 equipment-under-test EUT equipment subjected to stroboscopic visibility tests 3.1.3 temporal light artefact TLA change in visual perception, induced by a light stimulus the luminance or spectral distribution of which fluctuates with time, for a human observer in a specified environment Note 1 to entry: The change of visual perception is a result of comparing the visual perception of the environment lit by the modulated light to the visual perception of the same person in the same environment, when the environment is lit by non-modulated light. [SOURCE: CIE TN 006:201 6, 2.4.1 ] 3.1.4 flicker perception of visual unsteadiness induced by a light stimulus the luminance or spectral distribution of which fluctuates with time, for a static observer in a static environment Note 1 to entry: The fluctuations of the light stimulus with time include periodic and non-periodic fluctuations and may be induced by the light source itself, the power source or other influencing factors. Note 2 to entry: Flicker is a type of temporal light artefact. [SOURCE: CIE TN 006:201 6, 2.4.2, modified – Note 3 has been deleted.] 3.1.5 stroboscopic effect change in motion perception induced by a light stimulus the luminance or spectral distribution of which fluctuates with time, for a static observer in a non-static environment EXAMPLE 1 For a square periodic luminance fluctuation, moving objects are perceived to move discretely rather than continuously. EXAMPLE 2 If the frequency of a periodic luminance fluctuation coincides with the frequency of a rotating object, the rotating object is perceived as static. Note 1 to entry: The stroboscopic effect is a type of temporal light artefact. [SOURCE: CIE TN 006:2016, 2.4.3] 3.1.6 static observer observer who does not move her/his eye(s) Note 1 to entry: Only large eye movements (saccades) fall under this definition. An observer who only does involuntary micro-saccades is considered static. [SOURCE: CIE TN 006:201 6, 2.4.5]