Archive for the ‘Canon Patents’ Category

Patent: EF-M 70-400 f/4.5-7.2 STM

Patent: EF-M 70-400 f/4.5-7.2 STM

A patent for a new supertelephoto zoom optical formula for the EOS M system has surfaced in the form of an EF-M 70-400 f/4.5-7.2 STM.

  • Patent Publication No. 2014-228734 (Google Translated)
    • Published 2014.12.8
    • Filing date 2013.5.23
  • Example 3
    • Zoom ratio 5.58
    • The focal length f = 69.59-251.52-388.00mm
    • Fno. 4.68-6.30-7.00
    • Half angle ω = 11.11-3.11-2.02 °
    • Image height 13.66mm
    • Overall length of the lens 155.01-227.97-240.02mm
    • BF 15.81-37.15-46.87mm
    • Inner focus

Source: [EG]

cr

53 Comments

Patent: Sensor Technology

Patent: Sensor Technology

A new sensor patent from Canon has appeared and continues to add to what are sure to be new full frame sensors next year.

NL breaks down the patent…
“Patent from Canon that varies the sensitivity of pixels by positioning the photon detection zone deeper in the design.”

Source: [EG] via [NL]

cr

25 Comments

Patent: Contact Cleaning Body Cap

Patent: Contact Cleaning Body Cap

Here’s a fun one, howabout a body cap that cleans the contacts in the camera every time you put it on and take it off? Mix that with a backcap that does the same and that should eliminate those pesky contact errors.

Patent Publication No. 2014-219568

  • Published 2014.11.20
  • Filing date 2013.5.8

Canon patent

  • Body cap with a cleaning member for rubbing the contact

Source: [EG]

cr

13 Comments

Patent: Canon EF-S 11-24mm f/3.5-4.5

Patent: Canon EF-S 11-24mm f/3.5-4.5

Is Canon working on a replacement to the very good EF-S 10-22mm f/3.5-4.5? By the looks of this patent they are. I’d expect any replacement to have STM and maybe a bit better build quality, though the current one is about as reliable as they come.

Example 3 (Google Translated)

  • Zoom ratio 2.07
  • Focal length 11.61-15.50-24.07mm
  • Fno. 3.63-3.96-4.69
  • Half angle ω = 49.64-41.38-29.58 °
  • Image height Y = 13.66mm
  • Overall length of the lens 133.0-129.1-133.3mm
  • BF 3.26mm
  • Negative positive and negative positive 4-group zoom
  • Inner focus (Lf part of the first group)

Source: [EG]

cr

46 Comments

Patent: Canon EF 35mm f/1.4L II

Patent: Canon EF 35mm f/1.4L II

A new patent for an EF 35mm f/1.4L II has appeared. We haven’t seen a new patent for this optical formula in quite some time.  I recently received a claim that we’ll see such a lens in Q1 of 2015, but I haven’t been able to confirm that information.

Patent Publication No. 2014-202952

  • Published 2014.10.27
  • Filing date 2013.4.5

Example 1

  • Focal length f = 34.20mm
  • Fno. 1.45
  • Half angle ω = 32.32 °
  • Image height Y = 21.64mm
  • Lens length 129.16mm
  • BF 39.35mm

Source: [EG]

cr

41 Comments