Canon Patent For Translucent Mirror (?)

Edit: it’s not the first time Canon uses a translucent mirror technology (thanks JOKJOK).

Egami (translated) spotted an interesting patent filed by Canon.

Looks like a patent for a technology similar to Sony’s translucent mirror. The aim is to use the on-sensor auto-focus (think Dual Pixel AF) while using the optical view-finder. Intriguing. Canon is always doing research and I like it.

Patent description (machine translated):

• Patent Publication No. 2014-202780
  • Published 2014.10.27
  • Filing date 2013.4.1
• Canon patent of
  • Half mirror transmittance of the variable for each region
  • The center of the screen AF
    • Phase difference AF
    • Half mirror center only transmission of
    • Half mirror around is reflected, and guided to the OVF
  • Screen around the AF
    • Contrast AF
    • Selected regions of the half-mirror that portion of the transmittance, reflection otherwise

What do you think, did I get the patent right?