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提出在YAG投影管的荧光层与YAG面板之间研制多层干涉过滤膜的原理 ,并阐述了干涉膜的设计和制作。测试结果表明 ,带有干涉膜的YAG投影管图像色纯度有所改善 ,投影屏幕图像中央白场亮度约提高了 6 0 %。
The principle of developing multi-layer interference filter between the YAG projection tube and the YAG panel is proposed. The design and fabrication of the interference film are also described. The test results show that the color purity of the YAG projection tube with interference film is improved, and the brightness of the white field in the center of the projection screen is increased by 60%.