本仪器主要用于测量组合LED光源或由卤钨灯、紧凑型荧光灯等组合的反射灯发光强度、空间光强分布曲线、法向光强、光束扩散角等光度参数。根据被测光源(灯具)的尺寸大小，可配置不同规格的灯具夹具。
This instrument mainly be used to measure the luminous intensity distribution curve,intensity data,spread angle etc. of LED lamps and flash lamps, CFL lamp and other lighting devices. The various dark room are selectable in according to size of tested lamps.

技术特性 Characteristics & Specifications

◆照度动态范围：0.001lx至20000lx 
   Dynamic luminance range：0.001lx~20000lx；
◆照度测量精度 Accuracy of luminosity:  一级 Class1；
◆光束扩散角 Spread angle of light beam:θ(50%) θ(25%) θ(75%)；
◆法向光强 Center Intensity:  Io ；
◆角度范围 Angle range: -90o~+90°；
◆角度测量精度 Angle accuracy ±0.2°；
◆测量角度间隔选择 Measuring angle interval:0.5°/1°/2°/5°；
◆光电探测器V(λ)修正水平高，达到国家一级照度计要求
   Fine V(λ) corrected detector；
◆自动绘制光强空间分布曲线(极坐标和直角坐标)和自动测定光束角
   Draw luminous intensity distribution curve and measure the spread angle for light beam automatically；
◆测试方法满足CIE和国际要求 Meet the requirements of GB & CIE；
◆RS-232接口方便于PC电脑连接，操作系统Windows 2000/XP/Vista
   RS-232 Interface, based on windows 2000/XP/Vista；
◆用户自备5mx3mx3m(长x宽x高)暗室一间，要求内墙壁涂上黑色无光漆
   The user supplies for oneself 5mx3mx3m darkroom one,In request wall for black