Search
× Search

News

Canon Patent Application: Various lenses for ... Micro Four Thirds sensor size?
CanonNews
/ Categories: Canon Patents
This post may contain affiliate links(s). An affiliate link means I may earn advertising/referral fees if you make a purchase through my link, without any additional cost to you. It helps to keep this site afloat. Thank you in advance for your support. If you like what we do here, maybe buy me a coffee.

Canon Patent Application: Various lenses for ... Micro Four Thirds sensor size?

This is a strange lens patent application from Canon.

Atypically there are 5 or so different sensor sizes that Canon create lenses for. broadcast cameras, 2/3" compact, 1" powershot, APS-C and full frame.

Every now and then, you see strange ones, such as this one, where the image height is 10.75mm.  The only sensor that is close to a diagonal of 21.50 is Micro Four Thirds - which is 21.60.  For this lens to work on Micro Four thirds, slight corrections may be needed to correct for the slightly smaller image circle.

The only other application would be a new sensor of a size slightly smaller than micro four thirds.  Which may be the case, considering the backfocus, or focal plane distance in these patents are 6mm to 15mm - which is shorter than micro four thirds, with a 19.25mm focal plane distance.   However lenses can be inset into mount to be closer to the sensor, 13mm inset is a fairly long distance though.The lenses shown are;

  • 12mm - 48mm 1.7-4.0
  • 12mm - 47mm 1.7-2.8
  • 12mm - 24mm 1.7-4.0

An example embodiment;

  focal length 12.16 23.45 47.44          
  F number 1.75 2.69 4.09           
  half field angle (degree) 41.48 24.63 12.77          
  image height 10.75 10.75 10.75          
  lens total length 129.97 129.97 129.97         
  BF (in air) 13.60 8.77 9.59  

Like alot of patents, it's an area of research, and Canon is attempting to patent the design.  This of course, may never make it into a product, but I thought it was certainly ... different.

Japan Patent Application 2019-120821

Previous Article KolariVision announces the Kolari Pocket
Next Article Canon Patent Application: Linear Motor Drive
Print
blog comments powered by Disqus

Theme picker

Keep In Touch

FacebookTwitterLinkedIn

Our Preferred Sponsors

Want to buy me a coffee?

Free Shipping to the USA and Canada*

Use CANONNEWS for $10 off AuroraHDR

Use CANONNEWS for $10 off Luminar

*Conditions may apply
Terms Of UsePrivacy Statement© 2019 by CanonNews. This site is not affiliated with Canon Inc. or it's subsidiaries.
Back To Top