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
- 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