New patent info appread on egami today about Nikon 18-300mm F3.5-5.6 Lens Patent, Patent information translated by google Nikon 18-300mm F3.5-5.6 a patent is pending. Once commercialized if the APS-C SLR camera sounds like in the can achieve ultra high magnification zoom world’s first 16.6-fold.
Patent literature, interpretation and self-summary
- Patent Publication No. 2011-186159
- 2011.9.22 Release Date
- 2010.3.8 filing date
- Related 2011-186161,2011-186162,2011-186163,2011-186165
- Example 1
- Focal length f = 18.53928 – 291.02949mm
- Fno = 3.60631 – 5.78825
- Half angle = 39.00856 – 2.73699 °
- Image height = 14.20mm
- Lens length = 148.79923 – 242.82932mm
- Back Focus = 39.00067 – 105.34665mm
- Aperture diameter = 17.20 – 20.59mm
- 15.698x zoom ratio
- 3 aspherical surfaces
- Aimed at higher performance by optimizing the design value
- The first lens group moves toward the object side during zooming, aperture stop having an image side of the second lens
- The first lens can reduce the size of
- Field curvature, astigmatism suppressing the fluctuation of
