Archive for the ‘Canon Patents’ Category

Patent: Canon EF 100-400 f/4.5-5.6 IS STM

Patent: Canon EF 100-400 f/4.5-5.6 IS STM

A new patent for an EF 100-400 f/4.5-5.6 STM has appeared. Also in the patent is the EF-S 55-250 f/4-5.6 IS STM, so this patent is probably just covering an additional optical formula that will not become a product. I’d think any 100-400 replacement will be an L lens with an Ultrasonic Motor instead of an STM.

  • 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

Source: [EG]

cr

7 Comments

Patent: Multi-Lens, Multi-View Camera

Patent: Multi-Lens, Multi-View Camera

Below is a patent for a multi-lens, multi-view camera. I’m not sure what the application would be for such a camera, but I felt the same way about the PowerShot N and it continues to get made. :)

The patents below are translated via Google Translator.

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

Source: [EG]

cr

3 Comments

Patent: Canon EF 100-400 f/4.5-5.6 DO

A new patent showing an optical formula for an EF 100-400 f/4.5-5.6 DO has made an appearance. The patent also shows what appears to be a new 70-300 f/4.5-5.6 DO optical formula. Canon appears to be continuing their investment in diffractive optics R&D, though we haven’t seen a new DO lens in quite some time. I don’t think we’ll see a new 100-400 with the technology, and with the current 70-300L being pretty small and light, I’m not sure we’d see a new 70-300 DO either. It’s good to see they continue to develop the lens concepts though, and hopefully we see some new ones in the coming years.

EF 100-400 f/4.5-5.6 DO IS

EF 100-400 f/4.5-5.6 DO

  • 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

Source: [EG

cr

 

28 Comments

Patent: Canon EF 24-70 f/2.8L IS

Patent: Canon EF 24-70 f/2.8L IS

Another patent showing a Canon EF 24-70 f/2.8L IS. We have seem them in the past and have been told that prototypes have existed for such a lens. The issue has always been size and weight and it being usable over long periods of time for event photographers.

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

Source: [EG]

cr

30 Comments

Patent: EF-M 22-46mm f/3.5-5.6

Patent: EF-M 22-46mm f/3.5-5.6

A patent which appears to be for the EF-M mount has appeared. In APS-C, this lens would be a 35-75mm f/3.5-5.6.

Canon has stated that more lenses are coming for EOS M, and that could potentially mean the North American and European markets are still on Canon’s radar for the EOS M system. My bet is we’ll see an EOS M3 to re-introduce the product line to a global market.

Patent Publication No. 2014-63025 (Google Translation)

  • Publication date 2014.4.10
  • Filing date 2012.9.21

Example 7

  • Zoom ratio 2.09
  • Focal length f = 22.10-34.22-45.19mm
  • Fno. 3.60-4.59-5.60
  • Half angle ω = 31.72-21.76-16.48 °
  • Image height 13.66mm
  • 65.76-62.07-64.72mm lens length
  • BF 28.16-36.88-45.09mm

Source: [EG]

cr

12 Comments

Patent: EF 85mm f/1.2L III and Others

Patent: EF 85mm f/1.2L III and Others

A patent showing new 85mm & 50mm designs has surfaced. Both an 85mm f/1.2 and an 85mm f/1.8 appear as well as a 50mm f/1.4 and a 100mm f/2.

An updated 85mm f/1.2L II has been mentioned as being under development for quite some time, and we’re all expecting a new 50mm lens, which is an oft rumored product.

Patent Publication No. 2014-52412 

  • Publication date 2014.3.20
  • Filing date 2012.9.5
Example Focal length Fno. Length BF
One 85.00 1.24 125.55 38.98
Two 85.00 1.80 113.57 39.50
Three 51.70 1.41 88.04 39.00
Four 100.00 2.00 120.00 39.60


Image height = 21.64mm

Source: [EG]

cr

30 Comments

Patent: Canon EF 180mm f/3.5L IS

Patent: Canon EF 180mm f/3.5L IS

More Canon lens patents have shown up. This time we get some macro patents that also include hybrid IS. We’ve been told that the 180mm f/3.5L macro is on its way out, and this could be the direction Canon takes it.

A few other focal lengths also appear in the patent as well such as 200mm & 300mm versions with hybrid IS.

The information below is a Google translation.

  • Patent Publication No. 2014-41224
    • Publication date 2014.3.6
    • Filing date 2012.8.22
  • Example 1
    • Zoom ratio 1.37
    • Focal length f = 180.03-167.06-131.08mm
    • Fno (3.6-4.8-5.8 actual aperture). 3.6-3.3-2.59
    • Half angle ω = 6.85-7.38-9.37 °
    • Image height 21.64mm
    • The overall length of the lens 228.39mm
    • BF 68.14mm
  • Example 2
    • Zoom ratio 1.58
    • Focal length f = 198.49-164.7-125.48mm
    • Fno (3.6-4.8-5.8 actual aperture). 3.6-2.99-2.28
    • Half angle ω = 6.22-7.48-9.78 °
    • Image height 21.64mm
    • The overall length of the lens 231.65mm
    • BF 71.4mm
  • Example 3
    • Zoom ratio 1.92
    • Focal length f = 289.97-213.39-151.33mm
    • Fno (3.6-4.8-5.8 actual aperture). 3.6-2.65-2.21
    • Half angle ω = 4.27-5.79-8.14 °
    • Image height 21.64mm
    • The overall length of the lens 294.36mm
    • BF 68.05mm
  • Canon patents
    • Inner focus
    • (Part of the fourth lens group) antivibration
    • Supports Shifutobure (???)
    • Floating

Source: [EG]

cr

13 Comments

Patent: EF 16-35 f/4L, 17-40 f/4L and Others

Patent: EF 16-35 f/4L, 17-40 f/4L and Others

A slew of patents showing various wide angle optical formulas has appeared. All of the lenses appear to be for full frame and could be hints of replacements for the EF 17-40 f/4L as well as the EF 16-35 f/2.8L II.

  • Patent Publication No. 2014-41245
    • Publication date 2014.3.6
    • Filing date 2012.8.22
  • Example 1
    • Focal length f = 16.49-23.55-33.95mm
    • Fno. 4.10
    • Half angle ω = 52.68-42.57-32.51 °
    • 14 pieces of 10-group lens configuration
  • Example 2
    • Focal length f = 17.50-25.45-38.90mm
    • Fno. 4.10
    • Half angle ω = 51.03-40.36-29.08 °
    • 15 pieces of 11-group lens configuration
  • Example 4
    • Focal length f = 17.50-24.82-38.89mm
    • Fno. 2.88-3.25-4.10
    • Half angle ω = 51.02-41.08-29.09 °
    • 15 pieces of 11-group lens configuration
  • Example 5
    • Focal length f = 16.50-25.34-34.00mm
    • Fno. 2.91
    • Half angle ω = 52.66-40.49-32.47 °
    • 15 pieces of 11-group lens configuration
  • Canon patents
    • 4-group zoom of positive and negative positive negative
    • Inner focus

Source: [EG]

Canon EF 17-40 f/4L | Canon EF 16-35 f/2.8L II

cr

46 Comments

Patent: Canon EF 600 f/4L IS III & EF 600 f/4 DO IS

Patent: Canon EF 600 f/4L IS III & EF 600 f/4 DO IS

A new patent showing the 600mm f/4 optical formula. Is Canon already working on the replacements to the current super telephoto lenses? It’s quite possible! Although I suspect we’re talking 7-10 years from now. These sort of patents could also be for technology that will appear in  other lenses. Such as the upcoming replacement of the EF 800mm f/5.6L IS.

I do expect we’ll be seeing more DO lenses in the future. There seems to be an awful lot of patents for DO optical formulas. I suspect the cost of production is the hinderance to bringing these lenses to market at the present time. We already have $11,000 200-400 f/4 lenses and $18,000 800mm lenses. I suspect we’re at the ceiling of what people will pay for a lens…. or not. :)

Patent Publication No. 2014-26210

  • Publication date 2014.2.6
  • Filing date 2012.7.30

Example 1

  • Focal length f = 588mm
  • Fno. 4.12
  • Angle of view 2ω = 4.22 °
  • BF 56.0mm
  • Total lens length 374.7mm
  • Inner focus

Example 5

  • Focal length f = 588mm
  • Fno. 4.12
  • Angle of view 2ω = 4.22 °
  • BF 55.0mm
  • Total lens length 343.5mm
  • Inner focus
  • Diffraction optical element
  • Effect of the glass material
  • Fluorite (Fluorite)
  • In the long lens fluorite + total length, correction of chromatic aberration is easy
  • In short lens fluorite + total length, correction of chromatic aberration is difficult
  • Diffractive optical element (DOE)
  • Diffractive optical element can be corrected if the chromatic aberration
  • Flare caused by light diffraction

Source: [EG]

cr

12 Comments

Patent: Canon EF 24-85 f/3.5-5.6 IS

Patent: Canon EF 24-85 f/3.5-5.6 IS

A patent for an EF 24-85 f/3.5-5.6 IS has appeared. Along with this lens is a patent for the EF 24-70 f/4L IS. I do think Canon does need a new full frame non-L zoom lens to go into less expensive kits, or for an even less expensive full frame camera down the road.

Description and self-interpretation of the patent literature

  • Patent Publication No. 2014-16464,2014-16465
    • Publication date 2014.1.30
    • Filing date 2012.7.9
  • Example 3
    • Macro when in parentheses
    • Zoom ratio 2.84 (2.87)
    • Focal length f = 24.30-35.10-69.00mm (67.23-60.62)
    • Fno. 4.10 (5.28-5.56)
    • Half angle ω = 41.68-31.65-17.41 ° (17.84-19.64)
    • Image height Y = 21.64mm
    • 134.65-141.04-164.94mm overall length of the lens (162.09-152.75)
    • BF 39.15-46.02-59.68mm (64.95-67.73)
    • β = -0.17 (-0.7)
  • Example 4
    • Macro when in parentheses
    • Zoom ratio 3.42 (2.84)
    • Focal length f = 24.30-35.10-82.99mm (68.22-64.03)
    • Fno. 3.58-4.42-5.89 (5.92-5.87)
    • Half angle ω = 41.68-31.65-14.61 ° (17.60-18.67)
    • Image height Y = 21.64mm
    • 126.64-128.32-155.92mm overall length of the lens (149.57-148.58)
    • BF 39.39-49.31-64.14mm (65.59-65.96)
    • β = -0.17 (-0.6)
  • Canon patents
    • (4, etc. as in Example 3) seven-group zoom of positive and negative positive and negative positive positive and negative
    • (4, etc. the second group, as in Example 3) inner focus
    • implement the macro function by the first group fed out to the object side

Source: [EG]

cr

30 Comments