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Patent Application for new lens coating
CanonNews
/ Categories: Canon Patents
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Patent Application for new lens coating

This patent look to be expanding on ASC (air sphere Coatings) 

To provide an optical member having an anti-reflection film with high strength, uniform refractive index distribution, and low scattering, and a manufacturing method for the optical member.

This actually looks like little bubbles as shown by Canon's image below:

Japan patent application, 2017-167271 

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