车用不同光束角灯具的光通量测试技术探讨

Study on Luminous Flux Measurement Technology of Different Beam Angle Lighting Fixtures for Automobiles

为研究不同光束角的灯具光通量测试技术,用光束角分别为10°~120°的12只灯具样品进行实验。将灯具安装在积分球的几何中心,设置光束轴线与光度探测器平面的垂线的夹角,测试不同安装角度情况下灯具的光通量,结果表明积分球测量光束角小于100°的灯具存在较大偏差。使用分布光度计在不同的测试角度间隔下进行实验,只要选择合适的测试角度间隔就可得到精确可靠的结果。

To study the luminous flux test technology of different beam angle,the lamps have been studied,in which beam angles rang from 10°to 120°.Lamps are installed in the geometric center of integrating sphere.The lu-minous flux is tested with setting the angle between beam axis and the vertical of photometric detector plane.The results show that the lamp with a beam angle of less than 100°will produce a large deviation.Goniophotometer is used to test luminous flux at different angular intervals.The results show that,appropriate angular intervals selection can produce accurate and reliable results.