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Canon Patent For Translucent Mirror (?)

Canon Patent 2014_202780_fig05

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?

[via Egami ]


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