Canon patent for mount adapter with tilt-shift functionality

canon patent

Canon patent for a mount adapter with built-in tilt-shift functionality. This is not the first patent by Canon for such a technology.

  • Patent Publication No. 2015-172745
    • Published 2015.10.1
    • Filing date 2014.2.20
  • Canon patents
    • Mount adapter with a tilt
    • Tilt and shift
    • Lens of long flange back
    • Short flange back of the body
    • Wide image circle lens
    • Narrow of the image circle body
[via Egami]

Canon patent combining Phase Detect with Light-Field technology for accurate Auto-Focus

Canon Patent

Canon patent that appears to merge Phase Detect with Light-Field technology to improve auto-focus accuracy.

In current Canon Hybrid AF sensors, Phase Detect AF is used to quickly lock AF and Contrast Detect is employed to accurately set focus. The present patent employs Light-Field technology instead of the Contrast Detect part. That’s a cool trick, since Light-Field allows to set the focus after having shot the photo. If I get the patent right, Phase Detect is used to lock AF, and then Light-Field is used for the fine-tuning. This is not the first Canon patent referring to Light-Field technology (1 | 2). Light-Field technology is featured on Lytro cameras.

Will we see this tech on future Canon sensors? Possibly, the question is when.

  • Patent Publication No. 2015-161785
    • Published 2015.9.7
    • Filing date 2014.2.27
  • Canon patents
    • The image plane phase difference AF, the light field I comprises a
    • First, it is focusing on the image plane phase difference AF
    • Then, detect the focus from refocus image
    • To determine the driving range from the re-focus information in the case of out-of-focus
[via Egami]

Canon patent for 9-20mm f/4.5-5.6 image-stabilised lens for APS-C DSLRs

canon patent

Canon patent for a new lens, an ultra-wide angle and image-stabilised 9-20mm f/4.5-5.6 lens. The described optical formula refers to an APS-C sensor.

  • Patent Publication No. 2015-31869
    • Published 2015.2.16
    • Filing date 2013.8.5
  • Example
    • Zoom ratio 2.07
    • Focal length 9.50 14.52 19.70
    • F-number 4.64 5.21 5.80
    • Half angle (in degrees) 55.17 43.26 34.74
    • Image height 13.66
    • Overall length of the lens 143.95 134.71 134.11
    • BF 38.00 47.58 56.42
[via Egami]

 

Canon patent for 15-53mm f/2.8-4 lens (new kit lens?)

canon patent

Canon patent for a 15-53mm f/2.8-4 lens. Unusual focal range you may wonder. Could this be a patent for a new kit lens? Possibly. It would mean that Canon’s future kit lenses will start at f/2.8. Cool.

  • Patent Publication No. 2015-152765
    • Published 2015.8.24
    • Filing date 2014.2.14
  • Example 1
    • Focal length 15.40 20.46 51.00mm
    • Fno 2.80 3.00 4.30
    • Half angle of view ω 41.57 33.73 14.99 °
    • Image height 13.66mm
    • Overall length of the lens 119.65 123.99 149.53mm
    • BF 35.93 38.66 50.56mm
[via Egami]