Nikon patents for 17mm f/4 tilt and shift, 10mm f/4, 16-30mm f/4.5-5.6 and 28mm f/1.4 lenses
Nikon filed patent 201278550 in Japan and for a 17mm f/4 tilt and shift and 10mm f/4 wide angle lenses:
- Patent released date: April 19th, 2012
- Patent filing date: October 1st, 2010
- Focal length: 17.11mm
- Aperture: 4.08
- Angle of view (half): 63.03deg
- Image height: 33.00mm
- Lens length: 188.30mm
- Back focus 53.036mm
- Lens design: 18 elements in 11 groups, 2 aspherical elements, 3 ED glass elements
- Focal length: 10.3mm
- Aperture:. 4.17
- Angle of view (half): 64.84deg
- Image height: 21.6mm
- Lens length: 132.78mm
- Back focus: 38.10mm
- Lens design: 17 elements in 10 groups, 2 aspherical elements, 2 ED glass elements
patent: 16-30mm f/4.5-5.6
Patent 2012008273 filed in Japan is for a 16-30mm f/4.5-5.6 full frame lens. This is another example of a “cheap” full frame lens that could be designed for the rumored Nikon D600 camera:
Problem to be solved: To provide a lens having a wide angle of view, which is compact, has a small number of lenses, satisfactorily corrects aberrations and has high imaging performance, an imaging device, and a method for manufacturing the zoom lens.
Patent 201283703 has three different calculations for 28mm f/1.4, 24mm f/1.4 and 30mm f/1.4 lenses:
- Patent release date: April 26th, 2012
- Patent filing date: September 17th, 2010
- Focal length: 28.50mm
- Aperture: 1.45
- Angle of view: 75.6deg
- Image height: 21.6mm
- Lens length: 133.3mm
- Focal length: 24.70mm
- Aperture: 1.44
- Angle of view: 83.7deg
- Image height: 21.6mm
- Lens length: 133.3mm
- Focal length: 30.87mm
- Aperture: 1.45
- Angle of view: 71.3deg
- Image height: 21.6mm
- Lens length: 135.0mm
