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我国大屏幕显示技术起步于六十年代初,七十年代初电子工业部组织有关工厂、学校、科研单位研制并生产。油膜光阀大屏幕显示,先由华中师大于72年研制成功黑白机,试放效果尚佳,唯设备庞大,成本较高,只做了实验性样机。与此同时,苏州、无锡电视机厂及广电部广研所先后试制成功采用2.5英寸高亮度投影管配用施密特反射放大光学透镜,放映屏幕尺寸为60英寸的黑白投影电视机,填补了国家空白,并进行了小批生产,在当时我国电视机尚不普及的情况下提供了集体收看的电视设
China’s large-screen display technology started in the early 1960s, the early 70s of the Ministry of Electronics Industry organizations related to factories, schools, research institutes and production. Large screen display of oil film light valve, the first Central China Normal University 72 years to develop a successful black and white machine, put the effect is still good, the only equipment, large, high cost, only experimental prototype. At the same time, Suzhou, Wuxi TV Factory and the Institute of Radio, Film and Television has trial production successfully using 2.5-inch high brightness projection tube equipped with Schmidt reflection magnifying optical lens, screen size of 60 inches black and white projection TV, to fill The country was blank, and a small batch of production was carried out. At a time when television in China was still not popular, it provided a television set for collective viewing