Canon Patent For Big Telephoto Lenses, Likely For The Canon EOS R System

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Canon patent application 2019-0339497 (USA) discusses optical formulas for 500mm f/4, 300mm f/2.8, 400mm f//4, and 800mm f/5.6 lenses for the Canon EOS R full frame mirrorless system. At least likely.

The optical formulas discusses in the patent might as well refer to the EF mount. We are not sure about this, though we tend to think the lenses are for the EOS R system. All lenses seem to have internal focusing.

You can download the patent:

More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production are these:

Canon Patent For High Power Speedlite Flash With Air Cooling

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After the Canon patent application for a lens with built in vacuum cleaner, here is another interesting patent application filed by Canon.

Canon patent application 2019-185021 (Japan) discusses a high power flash unit with a built-in air cooling system. Air is sucked into the flash unit, passes through or around the flash head (the part that gets hottest) and is then put out. Effective cooling system.

An object of the present invention is to provide a lighting device capable of protecting a member related to light emission from heat associated with light emission.  A light source, a first optical member that transmits light emitted from the light source, and a light source that transmits light emitted from the light source are disposed between the light source and the first optical member. The second optical member and the air sucked from the first space, which is the inner space including the light source, on the light source side of the second optical member, and the first optical member and the second optical member. An air blowing mechanism that sends the air to a second space that is a space between the optical members.

  • canon patent
  • canon patent

More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production are these:

[via Canon News]

This Canon Patent Puts A Vacuum Cleaner Into A Lens To Keep The Sensor Clean

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Sounds weird? Well, it’s an actual Canon patent application.

Canon patent application 2019-191432 (Japan) discusses a lens design that incorporates the basic principle of a standard vacuum cleaner.

The specially designed lens has a an air flow circuit, as you can easily see in the image on top. Air is pulled in from the outside, hits the sensor, gets sucked away and flows out. Basically, this lens creates a negative pressure around the image sensor, so that dust and other particles don’t stick to the sensor. Quoting the patent literature:

An air intake channel for sucking air from the outside into the interior of the imaging device (200) by the pressure difference generated by the air flow generating means.

canon patent

Sound pretty awesome, and complicated too. From the patent abstract:

[Problem] To provide a dust removing device capable of easily removing dust adhering to an imaging element inside a camera body while confirming an actual influence degree.

[Means for solving] An outer housing having an engaging part for engaging with a lens mount detachably holding an imaging lens, and an inner side of the outer housing ;A communication unit for electrically connecting an inner housing and an imaging device to be arranged, a 1 passage penetrating into the body of the imaging device formed between the outer housing and the inner housing, a 2 passage penetrating into the body of the imaging device formed inside the inner case, and an engaging portion ;The device is provided with at least one optical member arranged on a photographing optical axis when engaged with an imaging device and on the inside of the inner case, an aperture mechanism, and an empty flow generating means arranged at a position not to erode a photographing light flux of the optical member in the 1 passage. A part of the 2 flow path is formed by the periphery of the optical member and an opening of the throttle mechanism

Don’t expect this invention to g to production anytime soon, if ever.

More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production are these:

[via Canon News]

Canon Patent For RF 24-80mm f/4 Lens For EOS R System

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Canon patent application 2019-191607, spotted by Canon News, discusses optical formulas for a Canon RF 24-80mm f/4 lens for the Canon EOS R system.

  • Focal length 24.72 48.09 82.45
  • F number 4.12 4.12 4.12
  • Half angle of view ( 41.19 24.22 14.70
  • Image height 21.64 21.64 21.64
  • Total lens length 119.50 134.52 149.55
  • BF 13.50 18.71 22.73

The Canon patent also discusses the optical formula for an RF 24-130mm f/4 lens.

  • Focal length 24.72 63.46 131.00
  • F-number 4.12 4.12 4.12
  • Half angle of view (degree) 41.19 18.83 9.38
  • Image height 21.64 21.64 21.64
  • Total lens length 137.50 168.92 200.33
  • BF 13.50 24.03 28.27

More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production are these:

Canon Might Have A Video Camera With RF Mount On Their Agenda, Patent

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Is Canon working on a video camera with RF mount? A patent suggest they might.

Canon patent application 2019‑161567 (Japan) describes a compact video camera that looks like the Canon XC10, and we think it has the RF mount, introduced by Canon with EOS R full frame mirrorless camera system.

Don’t get too excited, however. Most patent applications never go into production. Never the less, it might be a hint that Canon is investing in the RF mount. In any case, an interesting Canon patent application. Please note that the patent application doesn’t explicitly mention the RF mount. We think it might be an RF mount because according to the patent pictures, the lens mount is too close to the sensor to be an EF mount.

  • XC10
    The Canon XC10

More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production are these:

Here Is Another Canon Patent For IBIS (In Body Image Stabilisation)

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There might be no more doubt that Canon is actively working on IBIS (In Body Image Stabilisation). Here is another Canon patent application.

Canon patent application 2019-152785 describes an IBIS unit and its working. An excerpt from the paten literature:

Problems of the stage device as the blur correction mechanism of such an image pickup device include high efficiency in driving force generation and linearity improvement of a magnetic circuit for position detection. In response to this problem, Patent Document 2 discloses a configuration in which three magnets are arranged for each driving force generation unit to form a magnetic circuit using the concept of the Halbach array (hereinafter referred to as “Halbach magnetic circuit”).

it is possible to achieve high efficiency in generating driving force and to improve the linearity of the magnetic circuit for position detection

Some rumor outlets are presenting this patent application as the patent describing “the IBIS” Canon is going to feature on future cameras. We’d be a bit more cautious with such claims. There is nothing to proof it is “the IBIS”. More likely, it’s just one more IBIS patent in a long row.

We have no doubt IBIS is indeed coming to future Canon cameras. We would just be a bit more prudent and avoid saying it will be on board on Canon’s next EOS R model (which most likely it will not). Not on the next one, but maybe on the camera coming after.

More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production are these: