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| Solenoids in Medical Imaging Systems |
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A company that manufactures imaging systems for the medical industry required higher speed actuators for filter positioning. In the past, the speed of an imaging system was limited by the response of the video camera used to display the desired image. The camera processing time had been close to 66 msec (a5 Hz) to produce an image. In the process, two linear solenoids were used to position various filters in front of the light source. Because the speed of the camera was the limiting factor of the system, standard tubular solenoids in the filter changer had been fast enough to position the system's filter.
Advancements in camera technology pushed the operating speed to less than 5 msec. This has caused the filter changer to become the new limiting factor in the imaging system. The filter changer ran at a maximum speed of 25 Hz. To increase the overall system speed, the manufacturer had to find a faster way to change filters.
A Ultimag® was adapted with a web shaped shutter. The various filters were positioned on the shutter so that by actuating the Ultimag®, filters could be positioned in front of the light source with speeds many times faster than the precious system.
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