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Canon Patent: RF 30-600mm f/4-8 Zoom Lens For The EOS R System

Canon Patent

Another day, another Canon patent for an RF lens .

Canon patent application 2022-29145 (Japan) discusses optical formulas for a RF 30-600mm f/4-8 überzoom lens.

PROBLEM TO BE SOLVED: To provide a zoom lens capable of achieving both a high zoom ratio and good optical performance while being compact, and an image pickup apparatus having the same.

However, in Patent Documents 1 and 2, although the zoom lens has a high zoom ratio and high optical performance, it does not satisfy the demand for miniaturization. In order to achieve this, it is important to properly set the zoom type and the moving lens group during zooming.

An object of the present invention is to provide a zoom lens capable of achieving both a high zoom ratio and good optical performance while being compact, and an image pickup apparatus having the same.

Embodiment

  • Focal length: 30.50-585.00
  • F value: 4.00-8.00
  • Half angle of view: 35.35-2.12
  • Image height: 21.64
  • Overall length: 309.33-489.09
  • Back focus: 29.33-102.45

Is this a zoom lens like the Sigma 60-600mm f/4.5-6.3? Wonder if this lens patent will ever hit the shelves.

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

[via asobinet]

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