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Canon Patent Application: Diffractive Optical Element
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Canon Patent Application: Diffractive Optical Element

Canon has applied for another patent on a diffractive optical element.   Supposedly this diffractive optical element doesn't have the nature of cracking during manufacturing, which would mean it has a greater yield and cheaper overall to make.

A diffractive optical element allows lens designers to create the same lens smaller, and perhaps lighter as well than the same lens made without the diffractive optical element.

We are looking forward to Canon using diffractive optics in more lenses, especially for the RF mount, where the smaller size of diffractive optics lenses matches up well to smaller cameras.

US Patent Application 20190041556

 

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How to view Japan Patent applications.

Unfortunately, there's no direct way of linking to the patent application (sad!) however, this is the easiest process to view a japan patent or application.

  1. Go to the Japan Patent Office search page.
  2. If it's a patent application (they are usually in the format of Year-Number ie: 2017-011300) then type the patent application number into the second field down from the top where it says publication of patent application. 
  3. Click on search.
  4. Then click on the patent application number link, and there's the patent application!

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