Image intensifier

Published: 2026-06-26, M.P.

An image intensifier (I·I) is a device that amplifies the brightness of an image created by faint light, X-rays, or particle beams by thousands to tens of thousands of times. There are two main types: the "X-ray I·I," which is primarily used to visualize X-rays, and the "Micro-Channel Plate Image Intensifier (MCP-I·I)," which visualizes extremely faint light, such as fluorescence.

In an X-ray I·I, X-rays are first converted into light at the input phosphor screen, and then converted into electrons at the photocathode. The electrons emitted from the photocathode are accelerated, focused using focus electrodes and an anode power supply, and imaged onto the output phosphor screen. An electrostatic lens is utilized at the electrodes to focus the electrons and form the image. X-ray I·Is are mainly used in industrial non-destructive testing (NDT) equipment, medical and dental X-rays, and X-ray imaging.

In an MCP-I·I, faint light such as fluorescence is converted into electrons by the photocathode, and these electrons are amplified by a Micro-Channel Plate (MCP). The amplified electrons then strike a phosphor screen, which serves as a display, to output the image. The movement of electrons from the photocathode to the screen is achieved by applying a high voltage between each element to create an electric field. MCP-I·Is are utilized in scientific research, faint light measurement in biotechnology, security surveillance, and night-vision goggles for military applications.

Matsusada Precision offers a comprehensive lineup of high-voltage power supplies designed to accelerate, focus, and amplify electrons in X-ray I·Is and MCP-I·Is. We also provide isolated DC/DC converters and power supplies that can be used in floating configurations. In recent years, semiconductor-based X-ray Flat Panel Detectors (FPDs) and high-sensitivity CMOS night vision systems that do not use vacuum tubes have become increasingly widespread.