The AO-21841 is 18mm, Gen 2+, high-gain, high-photosensitivity Inverting Image Intensifier Tube (Photonis ECHO) encapsulated within a hard-surface insulating sleeve and suitable for passive night vision systems and goggles. The AO-21841 consists of a high-efficiency S-25 multialkaline metal photocathode on a twisted fiber optic output window; glass input window; micro-channel plate (MCP) current amplifier.
The AO-21841 has a built-in high-voltage power supply with overload protection circuit which incorporates (ABC) automatic brightness control to provide constant output image brightness as light levels varies. The power supply also provides (BSP) bright source protection to guard the tube against exposure to high levels of light and autogating feature to protect the tube against exposure to high levels of light.
The AO-21841 comes in the “Slim” ANVIS format and compatible with BNVD-15, PVS-14, or MUM-14 type devices. Options with the White Phosphor screen and manual gain control are available.