Archive for: patent

Patent: 10-22mm f/3.5-4.5 With a Liquid Element

A patent showing a 10-22 f/3.5-4.5 optical formula with a liquid element has shown up. I think it’s safe to say that this isn’t going to end up as a consumer product any time soon, but it’s still pretty interesting.

liquidelementpatent

  • Patent Publication No. 2014-145883 (Google Translated)
    • Published Date 2014.8.14
    • Filing date 2013.1.29
  • Example 4
    • Zoom ratio 2.07
    • Focal length f = 10.30-13.12-21.35mm
    • Fno. 3.23-3.62-4.63
    • Half angle ω = 52.86-46.03-32.50 °
    • Image height 13.60mm
    • The overall length of the lens 135.13-133.91-135.09mm
    • BF 0.15mm
  • Canon patents
    • And by varying the shape of the boundary surface, thereby changing the refractive power
    • Zooming, and has a refractive power element is positive, the element is negative
    • And reduce the variation of the curvature

Source: [EG] via [NL]

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Patent: Variable Diffusion Focusing Screen

A patent for a variable diffusion focusing screen from Canon is out there. The patent shows a focusing screen capable of showing sharp areas as well as giving the shooter a better idea of depth of field. Current DSLRs are quite difficult to manually focus accurately using fast primes with the default focusing screens. There are focusing screens out there you can swap out, but having it all in one screen would be ideal.

patentfocusingscreen

Patent Publication No. 2014-191184

  • Published Date 2014.10.6
  • Filing date 2013.3.27

Canon patents

  • Spreading factor variable finder screen
  • First diffusion rate
  • Brightness priority
  • Setting of low diffusivity and high transmittance
  • Second diffusion rate
  • Blur priority
  • Setting of high diffusivity and low transmittance
  • The partially changed spreading factor according to the focusing range

Source: [EG] via [NL]

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Patent: Improved Cooling for DSLRs

Canon has filed a patent that uses more of the camera as a heatsink to cool the electronics and most likely the sensor. I think this would be especially useful for video applications. 4K perhaps?

Patent Publication No. 2014-171141 (Google Translated)

  • Published Date 2014.9.18
  • Filing date 2013.3.5

coolingpatent

Canon patents

  • An electric path for heat imaging devices , electric heating member group, member boric mount ring portion (heat sink) heat to low thermal conductivity of the resin, and the order of the mount ring

Source: [EG]

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Patent: Dual Motor For Autofocus on STM Lenses

UPDATE
This is what we’re told this patent actually is.

“This is not a focus drive patent, it’s a SPRINGLESS LEAF SHUTER mechanism. EF Leaf shutter lens that will allow a true 1/1000s are on the drawing board, they just can’t make the Cmos do a clear scan and dump faster than 1/250s no matter what they have tried , and HSS make you loose way too much power.”

Original Post
A patent showing a dual motor autofocus for STM lenses has appeared. There is one motor for the STM and a secondary DCM motor. It looks like one motor assists starting the second motor for a faster and smoother operation. The patent information below is Google Translated. If anyone can clarify the patent, please do so in the forum thread associated with this post.

newstm

  • Patent Publication No. 2014-164106
    • Published Date 2014.9.8
    • Filing date 2013.2.25
  • Example 1
    • Moving the aperture one two motors
    • Main motor STM
    • Auxiliary motor DCM
    • And then rotate the first auxiliary motor, to assist the acceleration of the main motor

Source: [EG]

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Patent: Dual Pixel Phase Detect AF While in AI Servo

A new patent that integrates normal AF with phase detect AF has become public. This sort of technology could very much improve AF tracking in burst mode. Perhaps we’ll see this technology on the upcoming EOS 7D replacement?

If anyone can further clarify this patent, please do.

Phase Detect AF w/Normal AF

Phase Detect AF w/Normal AF

Patent Publication No. 2014-142372

  • Published Date 2014.8.7
  • Filing date 2012.1.22

Source: [EG]

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Patent: 45x Zoom for Waterproof Camera

Patent: 45x Zoom for Waterproof Camera

This patent may show where the next PowerShot D series camera is heading. Below is a patent for a 45x zoom lens that is for a waterproof/dustproof application.

  • Patent Publication No. 2014-109664 (Google Translated)
    • Publication date 2014.6.12
    • Filing date 2012.11.30
    • Related 2014-109665,2014-109666
  • Example 1
    • Zoom ratio 44.41
    • Focal length f = 4.62-13.02-205.00mm
    • Fno. 3.91-6.14-9.00
    • Half angle ω = 36.14-16.58-1.08 °
    • 99.33-103.38-113.64mm overall length of the lens
    • BF 12.11-10.81-4.28mm

Source: [EG]

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Patent: Another Multi Layer Related Sensor Patent from Canon

Patent: Another Multi Layer Related Sensor Patent from Canon

Below is another patent for a multi-layer related sensor patent from Canon has come to light. This is the third one that has appeared in the last month or so.

Keith over at Northlight breaks it down in a way that’s easy to understand. “The issue addressed, is light of the ‘wrong’ colour being reflected from one layer into another, which reduces the ability of different layers to respond to photons of only a particular range of colours. This has the potential to greatly improve the colour accuracy and fidelity of such stacked sensor designs.

Patent Publication No. 2014-130890 (Google Translated)

  • Publication date 2014.7.10
  • Filing date 2012.12.28
  • Multilayer sensor drawback of
  • G is light, the image quality is degraded and reflected by the surface of the layer between the G and B layer, re-enters the B layer
  • Canon patents
  • The provision of the dielectric film and the insulating film as an anti-reflection film
  • First insulating layer, B layer, a dielectric film, insulating film, dielectric film, G layer, a dielectric film, insulating film, insulating film, dielectric film, the R layer
  • By increasing the thickness of the dielectric film, to suppress the multiple reflection
  • The dielectric film is between the G layer and B layer, the reflectance with respect to G is lower than B

Source: [EG] via [NL]

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Canon Joins Cooperative Agreement to Reduce Patent Trolls

Canon Joins Cooperative Agreement to Reduce Patent Trolls

Asana, Canon, Dropbox, Google, Newegg and SAP Announce Formation of New Cooperative Patent-Licensing Agreement
 
TOKYO, July 10, 2014—Asana, Canon Inc., Dropbox, Google, Newegg and SAP today announced the formation of the License on Transfer (LOT) Network, a cooperative patent-licensing agreement that will cut down on patent troll litigation and the growing practice of patent privateering.
 
Patent litigation reached an all-time peak last year, with more than 6,000 lawsuits filed. Most of those suits came from non-practicing entities, also known as patent trolls—companies that don’t have a business outside of licensing and litigating patents.
 
More than 70 percent of the patents used by trolls come from still-operating companies. Indeed, in a growing trend called privateering, companies are selling patents to trolls that then use those patents to attack other companies. In some cases, those companies arrange to get a cut of revenue generated from the trolls’ suits.
 
The LOT agreement is a new kind of royalty-free cross-license meant to address these growing systemic problems. Member companies receive a license when the patents are transferred out of the LOT group. That means that companies retain their right to enforce a patent so long as they retain ownership of it. However, as soon as it is sold, a license to the other members becomes effective, protecting them from attacks by the troll to which the patent was sold.

 The agreement includes several other provisions that preserve a patent portfolio’s value, including carve-outs for certain M&A transactions and change of control.
 
The initial members of the LOT Network range from early-stage startups to established technology companies. Together they own almost 300,000 patent assets, generate more than $117 billion in revenue and employ more than 310,000 people.
 
“The LOT Network is a sort of arms control for the patent world,” said Allen Lo, deputy general counsel for patents at Google. “By working together, we can cut down on patent litigation, allowing us to focus instead on building great products.”
 
“Startups need to overcome many risks before they can become mature, thriving companies. The LOT Network is a powerful and creative new idea that will help ensure that patent abuse need not be one of them,” said Dustin Moskovitz, cofounder of teamwork software provider Asana.
 
“The LOT Network provides a unique mechanism for reducing patent troll threats while maintaining a portfolio’s primary significance and value,” said Kenichi Nagasawa, director and group executive of Canon Inc.’s Corporate Intellectual Property & Legal Headquarters. “Through the further expansion of the LOT Network, I look forward to the patent system restoring its sound functionality.”
 
“We believe that patents should never be used to stifle innovation,” said Brett Alten, IP counsel at Dropbox, “The LOT network is a creative solution to fight patent abuse that becomes more effective with each company that joins. The more participants there are, the better off we’ll all be.”
 
“Newegg has a very strong history of successfully battling patent trolls, and the License on Transfer Network is another valuable tool that helps protect participants from frivolous patent litigation,” said Soren Mills, chief marketing officer of Newegg North America. “We’re very happy to join forces with Google and other leading technology companies to preserve the spirit of innovation that’s so vital to our collective well-being.”
 
“The structure of the LOT Network helps protect innovative patent owners from unwarranted litigation, without stifling valid, beneficial uses of patents, such as cross-licensing,” said Anthony DiBartolomeo, senior vice president and chief IP counsel at SAP. “As long as a company owns their patent they retain all their rights to it.”
 
Read more at http://www.lotnet.com.

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Microsoft and Canon Sign Patent Cross-Licensing Agreement

Microsoft and Canon Sign Patent Cross-Licensing Agreement

REDMOND, Wash., and TOKYO — July 2, 2014 — Microsoft Corp. and Canon Inc. on Wednesday broadened their strategic alliance with the announcement of a broad patent cross-licensing agreement. With this agreement, Microsoft and Canon gain licenses to each other’s highly valued and growing patent portfolios.

“This collaborative approach with Canon allows us to deliver inventive technologies that benefit consumers around the world,” said Nick Psyhogeos, general manager, associate general counsel, IP Licensing of the Innovation and Intellectual Property Group at Microsoft. “Microsoft believes cooperative licensing is an effective way to accelerate innovation while reducing patent disputes.”

This agreement covers a broad range of products and services each company offers, including certain digital imaging and mobile consumer products. Microsoft and Canon have a long history of collaborating to bring high-quality, cutting-edge products to consumers, including color technology. Contents of the agreement will not be disclosed.

“This agreement is a natural extension of our longstanding relationship with Microsoft and commitment to developing innovative technologies,” said Hideki Sanatake, senior general manager, Corporate Intellectual Property & Legal Headquarters of Canon Inc.

Read the full Press Release

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Patent: 1.03x Magnification APS-C Viewfinder

As we get closer to the replacement of the EOS 7D, we’re starting to see some patents that will probably point to some features in the upcoming camera. The recent sensor patent is interesting, as well as this viewfinder patent. We had heard previously about the possibility of a 1.15x magnification viewfinder on the next flagship APS-C camera, which would have been equal to the size of a full frame 100% coverage viewfinder.

This viewfinder is slightly larger than the one on the EOS 7D.

A note about the sensor patent, we have heard that Canon is holding back some sensor patents until the camera is announced to the public, as all patent information is public domain. We’ll see if that turns out to be the case.

103viewfinder

Patent Information (Google Translated)

  • Patent Publication No. 2014-115451
    • Publication date 2014.6.26
    • Filing date 2012.12.10
  • Example 9
    • -3 -1 +1 Viewfinder diopter
    • Focal length f = 46.84 48.38 49.99mm
    • Eye point 22.00mm
    • 1.03 1.03 1.02x magnification
    • Pentagonal prism
    • Condenser lens made of glass
    • Eyepiece lens system with the exception of the condenser lens, 4-group structure of the positive and negative positive negative
    • In turn, resin (single-sided aspherical surface), glass, resin (single-sided aspherical surface), the material is glass
  • Patent Publication No. 2014-115452
    • Publication date 2014.6.26
    • Filing date 2012.12.20
  • Example 1
    • -3.00 -1.00 +1.00 Diopter
    • Focal length f = 62.22 59.69 57.39mm
    • Eye Relief 19.9mm
    • Maximum image height 12.4mm
    • Pupil diameter φ15mm
    • Magnification 0.87x
    • Pentagonal mirror

Source: [EG]

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