Nikon has filed a new patent in Japan. The patent describes a 10-65mm lens with a constant maximum aperture of f/1.9 designed for cameras with 1/2.3-inch-type sensors.
According to the patent application Nikon 10-65mm f/1.9 lens will offer a 35mm equivalent of 56-366mm and expected to be used on a premium compact shooter.
You can see the internal design of the Nikon 10-65mm f/1.9 lens and the details as below.
Nikon 10-65mm f/1.9 lens patent for compact cameras
Explanation and self-interpretation of the patent literature
- Patent Publication No. 2015-102646
- Published 2015.6.4
- Filing date 2013.11.25
- Example 1
- Zoom ratio 6.50
- Focal length f = 10.00 25.00 65.00mm
- Fno. 1.9
- Half angle of view ω = 23.18699 9.61495 3.72602 °
- Augmented Y = 4.05mm
- BF 40.15837mm
- Total length 367.46869mm