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Thursday, February 12, 2015

Canon Files Patent For New Auto-Focus System

A new patent from Canon involving a new type of auto-focus system has been uncovered by Egami, the Japanese photography blog. Canon is a huge conglomerate and is one of the most prolific companies in research and development. Many patents are filed to protect their intellectual properties and may never end up as a marketable product or technology in the end.

Explanation self interpretation of patent literature

  • Patent Publication No. 2015-22264
  • Published 2015.2.2
  • Filing date 2013.7.23 

Canon patent

  • Phase difference detection method to be received by the AF sensor can be reflected incident light from the imaging lens
  • The phase difference detection by the image plane phase difference AF
  • The phase difference detection by external light AF sensor 

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