曾经在信息显示设计师中间引起混淆的一个参数是亮度。这种混淆来源于如下的事实,亮度不仅是一个主观的参数,它是人眼对可见辐射的一种响应;而且是一个相对的参数,在那些范围,对比度和环境光全部影响人眼的视觉。的确,要作出有效的阴极射线管亮度测量是困难的,因为这样多的重要的因素会改变和变化。例如,扫描速率、电子束强度、 One of the parameters that once caused confusion among information display designers is brightness. This confusion arises from the fact that brightness is not only a subjective parameter, it is the human eye’s response to visible radiation; it is a relative parameter, in those areas where contrast and ambient light all affect the human eye’s vision . Indeed, making effective cathode ray tube brightness measurements is difficult because so many important factors can change and change. For example, scan rate, electron beam intensity,