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为使电影放映能得到良好的效果,除了放映机、光学系统和银幕有一定要求外,对放映机光源也有一些特殊的要求,如:亮度、银幕照度均匀性、显色性和稳定性等。但各种电影光源都不可能完全满足上述要求,因此评价某一光源的优越性只能是相对而言。目前,我国大功率电影光源主要是碳棒和氙灯两种。下面对这两种光源的概况作简单的分析。
In order to make the film show good results, in addition to the projector, the optical system and the screen have some requirements, the projector light source also has some special requirements, such as: brightness, screen illumination uniformity, color rendering and stability. However, a variety of film light source can not fully meet the above requirements, so the evaluation of the superiority of a light source can only be relative. At present, China’s high-power movie light source is mainly two kinds of carbon rod and xenon lamp. The following brief overview of the two light sources for a simple analysis.