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Canon Patents Retractable Barrier That Protects its Mirrorless Sensors

Canon has filed a patent for a brand new shutter-like barrier mechanism that seems designed to guard the shutter and picture sensor of its mirrorless cameras when a lens is eliminated, making certain that no mud or particles can enter and trigger harm.

As noticed by DigiCame Data, the patent — with an utility quantity 2019-234718 — was filed by Canon in Japan. Translated, the patent means that the sensor could also be geared up with a barrier mechanism that closes on the opening of the mount to guard itself.

The proposed mechanism within the patent implies that the retractable barrier can be passive and never powered by a motor. As a substitute, the mechanism would routinely open when a lens or a physique cap is twisted into the lens mount and subsequently shut when the lens or physique cap is eliminated, attributable to an array of built-in levers and is derived.

If Canon was to implement it, having such a design would hold prices down and cut back potential factors of failure as a result of there are fewer transferring elements. The patent proposes that this kind of mechanism can be located behind the body of the lens mount, positioned between {the electrical} contacts and the picture sensor.

The patent doesn’t element what sort of materials the barrier can be made out of, nevertheless, primarily based on the detailed diagram under, it seems that the mechanism can be extra sturdy than that of a regular shutter, DPReview suggests.

An exploded view of the parts used to create the barrier mechanism.

Mirrorless digital camera techniques face larger challenges, in comparison with DSLRs, in the case of picture sensor publicity when a lens or physique cap is eliminated. The filed patent system would passively be certain that the picture sensor is stored protected with out the consumer having to provoke it or endanger different elements of the digital camera designed for different functions.

For instance, Canon already makes use of its mirrorless cameras’ shutter to guard the sensor when a lens is eliminated, however there have been considerations that this would possibly put the shutter in pointless hazard ought to or not it’s unintentionally struck. A devoted safety panel would higher serve the specified function.

Though Canon has filed a patent for this barrier mechanism, it doesn’t but look like granted and as such, it’s unlikely to see implementation within the close to future. Moreover, patents can take a number of years to point out use in a completed product, particularly within the digital camera trade.

The complete particulars on the patent may be learn on J-PlatPat.

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