Canon Patent Application: Cini Zoom lens

Have you ever wondered with CINI lenses from Canon and other manufacturers cost so much and are so big? Here's a good patent application to illustrate just how complex these lenses are.

This is a patent application for a zoom CINI lens, for either 25-125 2.8 or a 19-90 4.0 with an extremely complex element design.

Focal distance 25.00 125.00 
F number 2.90 2.90 
Field angle 31.88 7.09 
Image height 15.55 15.55 
Whole length of the lens 426.91 426.91 
BF 50.00 50.00

Focal distance 19.00 90.00 
F number 4.00 4.00 
Field angle 39.30 9.80 Image height 15.55 15.55 
Whole length of the lens 223.01 223.01 
BF 44.99 44.99

Japan Patent Application 2019-008088