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介绍了一种HDTV显示用的7.6cmYAG（钇铝石榴石）投影阴极射线管（CRT），采用离心沉屏法将荧光粉沉积在YAG面板上制作高密度荧光屏，该荧光屏上制作有多层干涉过滤膜。管壳采用能与YAG进行匹配封接的玻璃材料。经过优化设计的预聚焦透镜和主聚焦透镜满足显示HDTV图像的要求。测试结果表明，在阴极电流为1.0mA和阳极电压为29kV条件下，红、绿、蓝管的亮度分别可达1．4×105cd／m2、6．2×104cd／m2和8×103cd／m2，绿色管子50％图像线宽为85μm。采用该管的122cm背投和183cm前投电视机的水平分辨率为1000电视线，平均白场亮度分别为624cd／m2和890cd／m2.
A 7.6 cm YAG (yttrium aluminum garnet) projection cathode ray tube (CRT) for HDTV display is introduced. The phosphor is deposited on the YAG panel by centrifugal sedimentation to produce a high density phosphor screen, which is fabricated with multiple layers of interference Filter membrane. The tube shell is matched with YAG sealed glass material. Optimal design of the pre-focus lens and the main focusing lens to meet the requirements of the display HDTV images. The test results show that the brightness of the red, green and blue tubes can reach 1.4 × 10 5 cd / m 2, 6.2 × 10 4 cd / m 2 and 8 × 10 3 cd / m 2 respectively at a cathode current of 1.0 mA and an anode voltage of 29 kV , 50% of green pipe image line width of 85μm. Using the tube 122cm rear projection and 183cm front projection TV horizontal resolution of 1000 TV lines, the average white brightness of 624cd / m2 and 890cd / m2.