Night vision tubes

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Learn more about Night vision image intensifiers tubes

Within Exosens Group, Photonis is the world leader in the design and manufacturing of state-of-the-art Image Intensifier Tubes (IIT) for military, space, and commercial applications. 

Image intensifiers are devices that intensify or amplify low light level images from natural sources, such as starlight or moonlight, or from artificial sources such as street lights or infrared illuminators. Through a meticulous process of photon conversion and electron multiplication, IITs amplify existing light sources by several thousand times, producing a much brighter image that can be seen by the human eye.

Over the years Night Vision has become a key opto-electronic technology in modern warfare as more and more operations take place by night. Photonis offers a variety of different options so that users can find an image intensifier tube that will work for their specific mission or operational requirement.

Night Vision enables to operate safely in night and low light conditions. Only quality image intensifier tubes can provide the best night vision images. That’s why it is important, not only to choose a good quality night vision goggle, but to equip it with the best possible image intensifier tube. 

In modern warfare, individual operations under the cover of darkness underscore the tactical and operational importance of superior night vision capabilities. As a result, a Night Vision Device (NVD) is no longer being seen as a luxury item, but as essential gear which every combat soldier in the field must have. As greater numbers of NVDs are being placed in service, their performance, reliability and ruggedness have significantly improved. Easy to deploy and inexpensive to maintain, NVDs have become crucial in maximizing a soldier’s operational capabilities in combat.

While choosing Night vision Devices (NVD), a lot of important performance parameters need to be considered and particularly the FOM because it is used to determine the overall performance of the Image Intensifier Tube (IIT). FOM is calculated as a product of the IIT resolution by the Signal-to-Noise Ratio (SNR). Additionally, parameters such as gain, Auto-Gating, and limiting resolution further contribute to optimizing the functionality of night vision systems, ensuring optimal performance across diverse operational scenarios.

As night vision technology continues to evolve, driven by various advancements in thermal imaging and laser optics, the market for image intensifier tubes is growing significantly to match specific operational needs and equipment requirements. With a large number of units being deployed across military, law enforcement, and commercial sectors, the demand for reliable and high-performance IITs is on the rise. Photonis, with its commitment to innovation and excellence, remains at the forefront of meeting this demand, delivering cutting-edge solutions that redefine the boundaries of nocturnal visibility. 
Night vision technology has evolved significantly over the years, with advancements leading to the development of different generations of image intensifier tubes (IITs). Each new image intensifier represents a leap forward in performance and capability, enabling users to operate more effectively in low-light environments. From the earliest versions to the latest state-of-the-art developments, the progression of IIT technology has been marked by improvements in resolution, sensitivity, and reliability.

The process of intensifying ambient light involves several key components, including the photocathode, microchannel plate, and phosphor screen. 

Photons from incoming light are converted into electrons by the photocathode, initiating the amplification process. The electrons are then accelerated through a high-voltage circuit, creating an “electron avalanche” within the microchannel plate. The multiplied secondary electrons are accelerated through an electrical field and hit the phosphor screen layer. These electrons are converted back into light; the image is projected through the eye-piece of the night vision device
The housing of an image intensifier tube plays a crucial role in protecting its delicate internal components from external factors such as dust, moisture, and mechanical shock. Constructed from durable materials, the housing provides a secure environment for the intricate circuitry and optics within the tube.  

The integration of image intensifier tubes into night vision devices relies on a stable power supply and precise input signals to deliver optimal performance. Whether it's for handheld goggles or weapon-mounted sights, a consistent power supply is essential for maintaining image clarity and reliability in the field.