Canon Patent Application: Long eye relief optics for EVF

[Richard CN]

Canon has applied for a patent for EVF optics that will provide a longer eye  relief.  This of course is necessary for anyone that wears glasses as a short eye relief can cause vignetting and problems in seeing the entire EVF field of view. To be honest, I find the current M5 EVF’s eye relief to be a bit too short for my liking, and most EVFs I find are like this, at least for me.
PROBLEM TO BE SOLVED: To provide an ocular optical system having long eye relief, wide viewing angle, and high optical performance. A first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a third lens having a positive refractive power, and a third lens having a positive refractive power, which are disposed in this order from the object side to the observation side. And the fourth lens L 4, the focal length and shape of each lens are appropriately set.
Canon Patent Application 2018-124349

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[Richard CN]

hey how about that.. everything worked. Y'all have to put up with me again for a few days. I hope I don't mess up the new site

 

[Mt Spokane Photography]

I've seen one patent like this in the past. Long eye relief is good to have.

Thanks for stepping in while CR Guy is traveling. It can be a thankless job.

 

[Hesbehindyou]

This is great for people with astigmatism and, in my case, both astigmatism and peculiarly deep-set and close-together eyes :-/

 

[Refurb7]

Good for Canon. Sounds like a very useful thing for eyeglass wearers, and way to make their upcoming mirrorless more appealing.

 

[Hector1970]

I wouldn't have cared about this a few years ago but it now matters to me so its good to hear.

 

[Chaitanya]

This would be really useful in a lot of situations.

 

[photonius]

Oh dear, does this increase DR? Canon is doomed. Instead of increasing DR by 1/2 f-stop, they waste their time making a viewfinder to ensure that the > 50% world population wearing eye glasses (>90% if one is over 60) can actually see the whole viewfinder, how useless.... ;-).