Canon L Lenses: Robots to Hand Polishing
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Canon L Lenses: Robots to Hand Polishing

Canon Europe just posted an interesting little article on 10 points about Canon's Utsunomiya lens factory in Japan.

It's an interesting look into a very complex and exacting process to bring great lenses to the buying public.

The points covered in this article are;

  • Japanese engineering is everywhere
  • Lens experts can hear faults
  • Lens polishing tools are made with diamonds
  • Aspherical lenses are made by melting glass
  • Sci-fi robots roam the factory
  • Lens polishing machines self-correct
  • Lens measurements are incredibly precise
  • The hardest lens to make is…
  • The innovation never ends
  • Canon lenses could (probably) cover half the world

Please take a look at this article here..

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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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