反光灯的中心光束强度及波束角(s)的测量方法

[中文适用范围]： 本技术报告描述了测量和规定反射灯中心光束强度及相关光束角度的方法。它适用于一般照明用途的白炽灯、钨卤素灯、气体放电灯和LED反射灯。不适用于特殊用途的灯，如投影灯。这些建议仅涉及灯的设计测试。 [外文原描述]： IEC/TR 61341:2010 describes the method of measuring and specifying the centre beam intensity and the associated beam angle(s) of reflector lamps. It applies to: - incandescent, - tungsten halogen, - gas-discharge and LED based reflector lamps for general lighting purposes. It does not apply to lamps for special purposes such as projection lamps. This second edition cancels and replaces the first edition published in 1994 and constitutes a technical revision. Due to the increasing use of reflector equipped LED lamps, the scope has been broadened and measurement conditions been included in order to take account of these lamps. Further, for easier understanding of the relation between the different axis and different intensities, two figures have been added. The luminous intensity distribution shall be reported instead of the centre beam intensity, if the latter is very low ("butterfly" distributions).