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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
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