Richard CanonNews / Thursday, April 18, 2019 / Categories: Canon Patents This post may contain affiliate links(s). An affiliate link means I may earn advertising/referral fees if you make a purchase through my link, without any additional cost to you. It helps to keep this site afloat. Thank you in advance for your support. If you like what we do here, maybe buy me a coffee. Canon Patent Application: Diffractive Optical Element Canon has applied for this patent on a diffractive optical element with improved diffraction effeciency. We haven't seen any new diffractive optical lenses in a while, the last being the Canon EF 400mm 4.0 DO IS USM II in September 2014. The 600mm DO lens was shown off in several Canon exhibits at shows but nothing has really come of it. Canon continues to do diffractive optics research and this patent application is another indication of that research. Canon also mentions putting diffractive optics in binoculars in this application which I think would be a first time implementation of this technology in binoculars. US Patent Application 20190113663 Richard CanonNewsRichard CanonNews Richard has been using Canon cameras since the 1990s, with his first being the now legendary EOS-3. Since then, Richard has continued to use Canon cameras and now focuses mostly on infrared photography. Richard is the founder and editor of CanonNews since 2017, and has worked as a writer on CanonRumors and other websites in the past. Other posts by Richard CanonNews Contact author Facebook page Print Tags: Canon Patent ApplicationDIffractive Optics Please login or register to post comments.