Canon Patent Application: Long eye relief optics for EVF

canonnews

EOS 80D
Dec 27, 2017
184
45
Canada
www.canonnews.com
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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Mt Spokane Photography

I post too Much on Here!!
Mar 25, 2011
15,111
446
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

EOS 80D
Jun 6, 2011
144
2
This is great for people with astigmatism and, in my case, both astigmatism and peculiarly deep-set and close-together eyes :-/
 

Refurb7

EOS RP
Feb 13, 2016
246
31
Good for Canon. Sounds like a very useful thing for eyeglass wearers, and way to make their upcoming mirrorless more appealing.
 
Reactions: HeavyPiper

Hector1970

EOS 6D MK II
Mar 22, 2012
972
63
I wouldn't have cared about this a few years ago but it now matters to me so its good to hear.
 

photonius

EOS RP
Jul 13, 2013
225
11
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.... ;-).
 
Reactions: HeavyPiper