What is the typical diameter of the output phosphor in an image intensifier?

The typical diameter of the output phosphor in an image intensifier is generally between 1/2 to 1 inch. This measurement is significant because it represents the area where the electronic image produced by the image intensifier is converted into visible light for viewing or further processing.

The output phosphor needs to be large enough to ensure good image quality and brightness, while also providing a manageable size for coupling with the next stage of image processing or recording. A diameter within the specified range allows for effective light output, which enhances the visibility of captured images on a monitor or recording device.

In the context of fluoroscopic imaging, the choice of dimensions for the output phosphor influences factors such as spatial resolution and signal-to-noise ratio, both critical for achieving high-quality images during diagnostic procedures.