Canon information patent software for a brand new electromagnet shutter design that goals to reduce shutter shock: Digital Images Assessment


Canon has filed a brand new patent in Japan that goals to scale back the vibrations brought on by a mechanical shutter. Japanese patent software quantity 2022-039332 outlines the problem of shutter shock and proposes a novel design that makes use of electromagnets to extend the precision of shutter place and management the shutter’s velocity to scale back shutter shock.

When translated, the patent states that the problem the patent goals to unravel is, ‘Within the imaging gadget, the vibration generated by the shutter is tough to propagate to different elements, and the shutter is positioned with excessive accuracy.’ Put one other manner, the patent describes expertise designed to handle the problematic vibration brought on by a mechanical shutter if you start your publicity. It is not a lot of a problem with low-resolution cameras, however as you improve the decision of the sensor, the extra probably it’s that shutter shock will negatively impression your picture high quality. The shutter is a really exact mechanical part of a digital camera, so any shock and vibration will be problematic.

All cameras should deal with the problem to various extents and there are methods to reduce the impact of shutter shock, together with the usage of an digital shutter or digital first curtain shutter.

The answer outlined in Canon’s new patent does not translate very properly, however here is the translated textual content nonetheless: ‘A picture pickup gadget 100 has a picture pickup aspect 103a for taking a picture of a topic, a shutter 110 for controlling an publicity time of the picture pickup aspect by touring a shutter blade 302, and transferring the shutter in a aircraft orthogonal to a picture pickup optical axis. It has a holding member 120 that may maintain the shutter, and first urging members 402a to 402c that urge the shutter within the first course within the aircraft. The shutter has contact parts 301g to 301i that abut on the positioning parts 120g to 120i offered on the holding member and place the shutter at a predetermined place within the first course. The shutter can transfer from a predetermined place in opposition to the urging power of the primary urging member, and the picture pickup equipment is a primary cushioning member that abuts on the shutter that returns to the predetermined place by the urging power of the primary urging member. It has 404a and 404b. [Selection diagram] FIG. 5.’

Determine 5. Click on to enlarge.

In an expanded part of the patent, Canon’s software explains how the motion of the shutter blades vibrates and the vibration propagates to the picture sensor itself, leading to a blurrier picture. Canon hopes to unravel this situation with a way more exact shutter design. As described by DIY Images, Canon’s patent describes a mechanism to open and shut the shutter with decreased vibrations by utilizing electromagnets. Three of those magnets will work collectively to manage the motion of the shutter and cushion the shutter because it reaches its restrict, lowering the vibration brought on by the shutter absolutely opening and shutting.

As an alternative of a shutter reaching its bodily restrict at most velocity, subsequently roughly hitting an inside part and inflicting vibration to propagate outward, electromagnets will decelerate the shutter earlier than its restrict, softening the blow, so to talk. Much less power means much less vibration.

Determine 6. Click on to enlarge.

There are rumors abound a couple of new high-resolution EOS R-series digital camera, so it stands to cause that Canon could also be taking a look at methods to scale back shutter shock on condition that a few of our readers have noticed points with the Canon EOS R5 and its mechanical shutter at sure shutter speeds. It isn’t a problem distinctive to Canon, in fact, but when Canon’s patent involves fruition in a manufacturing mannequin, the corporate could be the first to attempt to resolve it with a classy electromagnetic dampening design. Nikon, alternatively, opted to ditch a mechanical shutter altogether with its flagship Z9 mirrorless digital camera.


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