A photo-counting imaging sealed detector has been fabricated for far-ultraviolet (FUV) radiation detection, including an MgF2 input window, CsI photocathode, V-stack MCPs, circular arc terminated (CAT) resistive anode, and detector tube. The CsI photocathode was prepared by vacuum thermal evaporation. The CAT resistive anode was fabricated using thick-film technology. The detector body is mainly made of Kovar alloys and ceramics and was sealed in a cathode-transfer and indium-sealed vacuum system. The detector performance was evaluated using an FUV parallel light system consisting of a deuterium lamp, a reflective condenser, a filter wheel, a monochromator, a collimation system, and a vacuum chamber. The test results show that the imaging RMS nonlinearity is less than 3%, the spatial resolution is about 235um, and the dark. © 2023 SPIE. All rights reserved.