Our website is made possible by displaying online advertisements to our visitors.
Please consider supporting us by disabling your ad blocker.
Canon Patent Application: Air Sphere Coating and Flourine being combined | Canon News
Search
× Search

News

Canon Patent Application: Air Sphere Coating and Flourine being combined
CanonNews
/ Categories: Canon Patents

Canon Patent Application: Air Sphere Coating and Flourine being combined

In this patent application, we see Canon combining two coatings to form one coating that would benefit lenses, and allow for greater control of flare and ghosting while at the same time, assist with cleaning the front element and keeping it clean.

ASC or Air Sphere Coating has been around since the Canon 100-400L II was released, and Flourine coatings have been implemented in many of Canon's L lenses to date.

A low-refractive-index layer utilizing gaps between particles has a problem that oily matter penetrates and diffuses into voids between particles in the film. The present inventor has found that the contamination that has not been visually recognized at the time of adhesion of the contamination and low-molecular-weight oily matter generated by the adhesion of contaminants diffuse among particles in the low-refractive-index layer to decrease the refractive index, resulting in deterioration in the appearance to a degree that can be visually recognized. 

I would not be surprised to see this technology implemented in some of Canon's higher end L lenses at a future date and time.

US Patent Application 20180148603

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.
Previous Article Canon patent application: A new type of stacked sensor design
Next Article Canon USA: CarePak has been expanded for the US Markets.
Print
blog comments powered by Disqus

Theme picker

Keep In Touch

FacebookTwitterLinkedIn

Our Preferred Sponsors

Want to buy me a coffee?

Free Shipping to the USA and Canada*

Use CANONNEWS for $10 off AuroraHDR

Use CANONNEWS for $10 off Luminar

*Conditions may apply
Terms Of UsePrivacy Statement© 2019 by CanonNews. This site is not affiliated with Canon Inc. or it's subsidiaries.
Back To Top