A recently discovered Canon patent in Japan shows an active cooling EF to RF lens adapter build in. It seems Canon may have been aware of the potential for overheating in the new EOS R5 and EOS R6, and is already working on some solutions …
The patent was discovered by detectives in Canon News, and shows some different versions of said adapter. The basic design seems to show a mostly hollow adapter with an air intake and fan at the bottom and vents at the top. This would allow the adapter to circulate cold air right next to the sensor and potentially remove hot air from inside the sensor compartment.
It’s an unusual idea, but one that puts cooling just where it would be most useful:
An image appears to show the adapter as diffuse, passive heat from the sensor without the use of a fan, but this may be describing the internal structure of an alternative design.
Any such adapter would definitely benefit from active air circulation, although VCRs may want to avoid noise generated by any type of fan, and there is always the question of fan vibrations affecting the final image:
This is not the first time we have seen a Canon active cooling patent. Frequent readers may remember this patent from November last year, which shows a detachable fan that mounts over the viewfinder of a DSLR. Compared to that weird ball idea, this design seems much more reasonable and useful to us.
And while an official Canon product like this may never become (remember: a patent is not a product) the cooling devices for the EOS R5 are already announced and released … so it’s not as far-fetched as you might think .
