Night Vision Devices are now being used with telescopes to increase the image brightness and detail available to the user at the eyepiece. There seems to be a revolution when it comes to this emerging art of “Black Ops Astronomy” with his revealing phone images available on the internet each day. Thanks to Alan […]
Category Archives: Uncategorized
28
Oct
Oct
All specification only show the minimal specifications manufacturers will at least meet. Often enough the real specifications of each tube are above those by far. Photonis Commercial Res: 30 lp/mm SNR: 12 Sens: 270 uA/lm Photonis cheapest IIT they still sell. Here is everything that does not meet at least XD-4 specifications. Tubes will have […]
What does Automatic Brightness Control (ABC) mean? This allows the tube to protect itself from overexposure. It keeps the image within a certain brightness range with upper limit, meaning there is a limit to how bright a tube can get to prevent damage. Autogated PSU? This is nothing else then PWM but for image intensifier […]
26
Oct
Oct
One of the most essential parts of an IIT is its phosphor screen. It is what you see and what converts the electrons back to photons. Typically, the phosphor is deposited on the back of the fiber optic and then covered with a layer of aluminum. The aluminum layer increases the light efficiency up to […]
Knowing how to correctly use Night Vision is essential, especially when combined with firearms. For every kind of NVD and firearm there are different methods and techniques. Night Vision Monocular. There are two ways to use a pistol with night vision. 1. You use a mounted laser-light combo such as a DBAL-PL with an IR […]
26
Oct
Oct
How should you use a Night Vision Device without destroying it? People are overly cautious and don’t get the full potential out of their device. After all, for many, buying a NVD, is investing in a NVD. And when you invest you want a return. That return can be maximized by knowing the limits of […]
03
Aug
Aug
Night Vision Devices have been in use for almost more than 80 years now. With its initial debut in WWII. Back then the devices where heavy and bulky, most often only rifle mounted. These units consisted of a simple imaging tube, which didn’t amplify any light, it only converted it. Being able to pick up […]
The basis of night vision is a conversion of energy that occurs within a vacuum tube. An image intensifier tube collects photons through an objective lens, via a photo cathode converts them to electrons, increases the electrical energy by electron acceleration or multiplication, converting the electrical energy back to photons using a phosphor screen and […]
03
Aug
Aug
The development of Gen 3 IITs started end of the 1970 and the first contract for Gen 3 IITs (the OMNI I contract) was signed in 1981. There are several differences between the Gen 3 and Gen 2+ technology. Main difference is that Gen 3 uses GaAs photocathodes instead of the multialkali photocathodes used in […]