Egami (translated) spotted a patent filed by Canon for 100-400mm f/3.5-5.6 STM and 55-250mm f/4-5.6 IS STM lenses.

• Patent Publication No. 2014-102462
  • Publication date 2014.6.5
  • Filing date 2012.11.22
• Example 1
  • Zoom ratio 4.24
  • Focal length f = 56.90-133.00-241.28mm
  • Fno. 4.12-5.04-5.83
  • Half angle ω = 13.50-5.86-3.24 °
  • Image height 13.66mm
  • 154.33-176.38-191.20mm overall length of the lens
  • BF 41.21mm
• Example 5
  • Zoom ratio 3.73
  • Focal length f = 104.59-199.99-389.99mm
  • Fno. 4.58-5.03-5.87
  • Half angle ω = 11.69-6.17-3.18 °
  • Image height 21.64mm
  • 245.09-285.06-308.91mm overall length of the lens
  • BF 68.73mm

 

Another hard to decipher patent by Canon, spotted by Egami (translated). Apparently it points to a muli-view and multi-lens camera. Whatever such a device is for. A new cool gadget by Canon?

• Patent Publication No. 2014-110442
  • Publication date 2014.6.12
  • Filing date 2012.11.30
• Canon patents
  • Multi-lens camera concentrically arranged an imaging device and a plurality of lenses
  • I do light field, angle of view changes, perspective changes, noise reduction, resolution conversion, HDR, distance estimation, the disparity estimation
• Patent Publication No. 2014-110443
  • Publication date 2014.6.12
  • Filing date 2012.11.30
• Canon patents
  • I provided a handle to the multi-lens camera
  • Parameter change in the rotation of the handle
• Patent Publication No. 2014-110444
  • Publication date 2014.6.12
  • Filing date 2012.11.30
• Canon patents
  • I reduce the number of the imaging lens element than the number of multi-lens camera
  • By the rotation of the optical unit, to select a specific lens

To be honest I am not 100% sure I got this right, since I read Google’s automatic translation.

However, Egami (translated) spotted a patent filed by Canon that visually guides you thru the in camera display system while manual focusing (fine focusing, I suppose). Any help to better understand this patent would be appreciated.

• Patent Publication No. 2014-89329
  • Publication date 2014.5.15
  • Filing date 2012.10.30
• Canon patents
  • I get information on the rotation direction of the focus ring
  • I get the image of the near side and the image of the far side of the optimum than the current position
  • I displays an image corresponding to the direction of rotation of the focus ring
  • Upon detecting the rotation of the focus ring, to release the image display

Egami (translated) spotted a patent for a 100-400mm f/4.5-5.6 lens with diffractive optical elements. We saw other patents for a 100-400mm in the past. The patent refers also to a 70-300mm  f/4.5-5.6 lens.

Is this the patent for the replacement for the Canon EF 100-400 f/4.5-5.6L IS? Don’t think so, since the patent refers to a lens without IS. Just recently a rather weak rumor surfaced suggesting that the EF 100-400 f/4.5-5.6L IS replacement could be the next “L” lens Canon is going to announce, the latest rumor in a long series for this lens that hopefully will be seen one day.

• Patent Publication No. 2014-89385
  • Publication date 2014.5.15
  • Filing date 2012.10.31
• Example 1
  • Zoom ratio 3.78
  • Focal length f = 103.00-200.00-388.94mm
  • Fno. 4.63-5.24-5.83
  • Half angle ω = 11.86-6.17-3.18 °
  • Image height Y = 21.64mm
  • 228.82-273.58-303.10mm total length
  • BF 69.48-90.93-105.73mm
• Example 6
  • Zoom ratio 4.00
  • Focal length f = 72.50-135.00-289.99mm
  • Fno. 4.44-5.04-5.85
  • Half angle ω = 16.62-9.10-4.27 °
  • Image height Y = 21.64mm
  • 143.91-177.69-203.15mm total length
  • BF 39.10-39.10-39.10mm

[via Egami]

Egami (translated) spotted a Canon patent for a 24-70mm f/2.8 IS lens. This is the fourth time I am posting about such a patent (the other patents: 1 | 2 | 3).

• Patent Publication No. 2014-52413,2014-52445
  • Publication date 2014.3.20
  • Filing date 2012.9.5
• Example 1
  • Zoom ratio 2.75
  • Focal length f = 24.7-35.21-68mm
  • Fno. 2.9
  • Half angle ω = 41.21-31.57-17.65 °
  • Image height 21.64mm
  • 223.94-207.87-180.56mm overall length of the lens
  • BF 38.31mm

[via Egami]