Imaging apparatus and interchangeable lens
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United States of America Patent
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Oct 13, 2015
Grant Date -
Mar 20, 2014
app pub date -
Sep 10, 2013
filing date -
Sep 19, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A camera includes a ferromagnetic member, which is formed of a ferromagnetic material into one of a plate shape and a film shape, and arranged between a coil and an imaging element so that a part of a flat surface is opposed to the coil. The ferromagnetic member has a thickness that is less than a skin depth, which is determined by a drive frequency of a coil, magnetic permeability of the ferromagnetic material, and electric conductivity of the ferromagnetic material. Accordingly, with the ferromagnetic member having a smaller thickness than before, an amount of arrival by which magnetic flux generated at the coil arrives at the imaging element may be reduced.
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