Patent: New Improved Shutter

Canon Rumors Guy

CR Pro
Jul 20, 2010
<p>A new patent application showing an improved mechanical shutter has appeared.</p>
<p>According to <a href="">Canon News</a>, this application describes a shutter with a low power requirement and a fast release time lag.  No mention if it is quieter, which is always nice as well.</p>
<p><strong>From <a href="">US Patent Application 20180196333:</a></strong></p>
<blockquote><p>This embodiment provides a shutter apparatus and an image capturing apparatus, which can restrain a power consumption amount with a shorter release time lag</p>
<p>A shutter apparatus according to one aspect of the present invention includes a shutter base plate having an opening, a light shield movable between a closed state for closing the opening and an open state for opening the opening, a cam member rotatable in a first angle range, a second angle range, and a third angle range between the first angle range and the second angle range, the cam member that rotates in the third angle range rotating the light shield, a motor configured to drive the cam member, a forcing member configured to force the cam member so as to rotate the cam member from the first angle range to the third angle range, and a restricting member configured to restrict the forcing member from forcing the cam member in at least part of the first angle range.</p></blockquote>
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Mt Spokane Photography

I post too Much on Here!!
CR Pro
Mar 25, 2011
Nothing about reducing noise or vibration over existing shutters. It does allude to reducing vibration, but that feature may be in existing shutters.
I was not aware that power required to cock the shutter spring after it closes was a issue, but apparently, its worth trying to fix.
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