Three dimension characteristic measurement of LED based on LabVIEW
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摘要: 为了解决传统配光曲线只能反映LED发光二维特性、立体感太差及不便于人为观察比较的难题，提出一种新的基于高级图像编程语言(LabVIEW)的LED三维特性(光强空间分布)快速检测方法。在传统光强空间分布检测方法的基础上，采用多路光度探测单元同步测试，可在0.2s内一次性由31个探测单元同步测得LED光源的二维光强空间分布（配光曲线）。通过增加旋转机构转动待测LED样品，依次测得i(i=180/)条配光曲线。最后由自研软件将i条配光曲线进行数据汇总处理，便可得到LED光源的光强空间分布的三维立体图。该检测方法具有速度快、精度高、信息量大等优点，并且具有实时性和直观性。Abstract: A new testing method for LEDs spatial intensity distribution based on the high-level image programme language (LabVIEW) was introduced to overcome the shortcomings of the conventional method, whose light distribution curve can only reflect the two-dimensional light-emitting characteristics of LED and the third dimension is difficult to be observed and compared by human eyes. It incorporated synchronized multipath photometric detection in the traditional method, with 31 detection units to measure two-dimensional spatial intensity distribution (lighting distribution curve) of the LED source synchronously within 0.2s. By rotating LED test sample, i(i=180/) items of the lighting distribution curve were measured one by one. All the lighting distribution curves were collected and processed by the custom software, and three-dimensional solid map of the LEDs spatial intensity distribution was obtained. The method has the real time and high throughput features, and it is fast, accurate and straightforward.
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Keywords:
- three dimension characteristic /
- space distribution /
- LabVIEW /
- LED
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