摘要
分析了2GBX-1型红外串联变象管(以下简称2GBX-1型变象管)由于是玻璃型结构,同时又是采用定焦型电子光学系统造成大批产品鉴别率偏低的结果(中心鉴别率17.5～18.5lp/mm)。在进行平面阴极5电极式的调焦型电子光学系统改进设计后,已使研制管型的中心鉴别率提高到26～34lp/mm。边缘畸变和场曲也有明显改善。如果进一步改进设计为球面阴极的调焦型电子光学系统,将使边缘畸变、场曲和边缘鉴别率得到更进一步的改善。
Because of the glass construction and the fixed focus electro-optic system many 2GBX-1 infrared cascade image converters produced have low resolution (central resolution is about 17.5～18.5). In the improved design, 5 electrode adjustable focus of the flat cathode was used the central resolution of the new tube increased to 26～34lp/mm. The field distortion and peripheral distortion are also significantly improved. If the adjustable focus of spherical cathode is used in electro-optic system, the peripheral distortion, the field distortion and the peripheral resolution will be further improved.
出处
《红外技术》
CSCD
1992年第2期23-28,共6页
Infrared Technology
