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Author Topic: Diffractive 200 f/2, 300 f/2.8, 400 f/2.8, 600 f/4 Patent  (Read 2082 times)

Canon Rumors

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Diffractive 200 f/2, 300 f/2.8, 400 f/2.8, 600 f/4 Patent
« on: January 06, 2012, 10:24:26 AM »
Patent literature, self-interpretation and summary A lot of diffractive optics patents have come about over the years, and we have yet to see a new product to join the 400 f/4 DO or 70-300 DO. Canon obviously sees value in the technology as they continue to research it.

Patent Publication No. 2012-2999

  • 2012.1.5 Release Date
  • Filing date 2010.6.16

Benefits of diffractive optical elements

  • Can simultaneously reduce the chromatic aberration correction and lens length
  • Perform light lens design
  • Canon’s patented
  • Type Tele Photo
  • The first lens group
  • Aspherical surface having a diffraction
  • Reduce the number of lighter
  • Spherical aberration is corrected by using a non-
  • The second lens group
  • Inner Focus

Source: [EG]

cr

« Last Edit: January 06, 2012, 10:26:56 AM by Canon Rumors »
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Diffractive 200 f/2, 300 f/2.8, 400 f/2.8, 600 f/4 Patent
« on: January 06, 2012, 10:24:26 AM »

dolina

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Re: Diffractive 200 f/2, 300 f/2.8, 400 f/2.8, 600 f/4 Patent
« Reply #1 on: January 06, 2012, 10:36:40 AM »
I am so excited to see this happening this year!
Visit my Flickr, Facebook & 500px and see my photos. :)

J. McCabe

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Re: Diffractive 200 f/2, 300 f/2.8, 400 f/2.8, 600 f/4 Patent
« Reply #2 on: January 06, 2012, 10:46:00 AM »
I am so excited to see this happening this year!

This is just a patent - it is unknown if & when those might turn into lenses.

AprilForever

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Re: Diffractive 200 f/2, 300 f/2.8, 400 f/2.8, 600 f/4 Patent
« Reply #3 on: January 06, 2012, 11:28:39 AM »
Perhaps they will join the elusive 3D in the rumour mills...
What is truth?

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Re: Diffractive 200 f/2, 300 f/2.8, 400 f/2.8, 600 f/4 Patent
« Reply #3 on: January 06, 2012, 11:28:39 AM »