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提高工用,民用电视的图象质量是目前国内,外电视工作者奋斗的目标之一。显象管作为目前电视图象的主要终端显示器件,如何提高显象管传递图象的质量就显得非常重要。因此,正确地测量和评价显象管的品质,制订合理的测量方法,建立必备的测量设备,对提高质量,研制新产品都是必不可少的。 利用光学传递函数的理论来评定光学系统和成象器件的观点早已提出,但至今普及不够有以下两个原因。第一,是由于对光学传递函数理论普及不够。第二,是在实际应用光学传递函数理论时没有应用电子计算机处理数据,人口处理数据感到困难,需要耗费大量的时间,显得很不适用,因而无法普及。 本文,利用通讯系统于成像系统传递信息的相似性引进并推导(光学)传递函数。其次,介绍光学传递函数在评价显像管传递信息质量方面的应用以及电子计算机处理过渡法。
Improve the use of industrial and civil television image quality is the current domestic and foreign television workers one of the goals. As the main terminal display device of the television picture, it is very important how to improve the picture quality of the picture tube. Therefore, the correct measurement and evaluation of the quality of CRT, develop a reasonable measurement methods, the establishment of the necessary measurement equipment, to improve the quality, the development of new products are essential. The idea of using the theory of optical transfer functions to evaluate optical systems and imaging devices has long been proposed, but not enough so far for two reasons. First, due to the lack of popularity of the optical transfer function theory. The second is that in the practical application of optical transfer function theory, there is no application of electronic computer to process data. It is difficult for the population to process the data, which takes a great deal of time and is not suitable for application. Therefore, it can not be popularized. In this paper, the (optical) transfer function is introduced and deduced using the similarity of information conveyed by the communication system in the imaging system. Secondly, it introduces the application of optical transfer function in evaluating the quality of information transmitted by CRT, and the electronic computer processing transitional method.