image intensifierIn low light night vision technology, the low light image intensifier is the core component of the low light night vision system, playing a decisive role in the imaging quality of the entire system. Therefore, it is widely used in various fields such as optical radiation measurement and camera devices. Brightness gain is an important performance indicator of low light image intensifiers.
The low light image intensifier is the core component of low light night vision systems. The entire low light night vision system includes an optical imaging lens group, a low light image intensifier, and a post-processing system. Among them, the low light image intensifier is the most important component. So far, there have been first generation low light image intensifiers, second generation low light image intensifiers, third generation low light image intensifiers, and fourth generation low light image intensifiers. Different generations of low light image tubes have different structures, but mainly include the following parts: photocathode, ion barrier film, microchannel plate, and fluorescent screen. The entire tube is a vacuum device.
The main experimental content of the low light image intensifier experimental instrument is:
1. Learn and master the method of measuring brightness by using an illuminance meter to measure the illuminance of the incident and outgoing images of an image intensifier.
2. Master the concept and measurement method of brightness gain of image intensifier through the above experiment.
3. Measure the equivalent background illumination of the image intensifier using an illuminance meter.