Pluta M
Central Optical Laboratory, Warsaw, Poland.
J Microsc. 1987 Oct;148(Pt 1):11-9. doi: 10.1111/j.1365-2818.1987.tb02851.x.
An extremely simple, modified polanret phase-contrast system has been developed. It uses only a single polarizing ring, instead of three zonal polarizers as required in Osterberg's original polanret system (manufactured by the American Optical Corporation). The modified system is much more easily manufactured and its economy of light is twice as good. However, it does require an easily accessible microscope objective exit pupil, where the polarizing ring must be located.
一种极其简单的改良型偏振相衬系统已被开发出来。它仅使用一个偏振环，而不是奥斯特伯格原偏振相衬系统（由美国光学公司制造）所要求的三个区域偏振器。这种改良系统更容易制造，其光利用率提高了一倍。然而，它确实需要一个易于接近的显微镜物镜出射光瞳，偏振环必须位于此处。
