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在光度测量实验中,传统的方法是用陆末光度计及眼睛的判断来比较来自两个光源的光线在某处的照度是否相等。但是,即使是照度相等,也由于两个光源在光色上的差异,而误认为照度不等;另外,陆末光度计是由光学元件制成的,成本较高。本文介绍一种电子光度计,它用两块硅光电池作为光电转换器件,分别对两个光源进行探测,又用运算放大器对两路光信号进行比较,最后
In photometry experiments, the traditional method is to compare the illuminance of light from two light sources somewhere, with the judgment of a washer photometer and the eye. However, even if the illuminance is equal, but also because of the two light sources in the light color differences, and mistaken for the illumination range; In addition, the end of the photometer is made of optical components, the cost is higher. This article describes an electronic photometer, which uses two silicon photovoltaic cells as a photoelectric conversion device, respectively, to detect the two light sources, but also with the op amp to compare the two optical signals, and finally