Test and analysis of the halo in low-light-level image intensifiers

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2012,（6）
• 页码范围: 1-3
• 页数: 3页
• 语种: 英文
• DOI: 10.3788/COL201210.060401

摘要

A halo tester is designed to analyze the halo formation in low-light-level (LLL) image intensifiers and the influencing factors on halo size.The tester is used to collect a 0.1922-mm hole image directly using a CoolSNAPK4 charge-coupled device (CCD) in a darkroom under illumination conditions between 10-2 and 10-4 lx.The practical measurement result shows that the amplification ratio is 343.4.Then,the super second- and third-generation image intensifiers are placed after the hole,and the halo sizes of the hole images on the screens are determined as 0.2388 and 0.5533 mm,respectively.