A digital camera uses a specific device to capture light from the output phosphor on an image intensifier. What is this device?

The device used in a digital camera to capture light from the output phosphor on an image intensifier is a Charge Coupled Device (CCD). This technology is integral to converting the light received into electronic signals that can be processed to create a digital image. CCDs are known for their high sensitivity to light, making them especially effective in low-light conditions, which is essential in medical imaging and fluoroscopy applications.

When light from the output phosphor strikes the CCD, it generates an electrical charge proportional to the amount of light received. These charges are then transferred through the device and converted into digital data, enabling the creation of high-quality images. The ability of CCDs to capture fine details makes them the preferred choice in many imaging systems, including those used in fluoroscopy.

The other options pertain to different technologies or components that do not specifically relate to the function of capturing light in this context. For instance, closed circuit digital typically refers to a system setup rather than a specific light-capturing device, while contrast control devices are designed to adjust the visual output of images rather than capture light. Cold cathode devices focus on electron emission rather than the direct capture of light in imaging systems.