Sony 50mm f/1.2 and f/1.4 lens patents

• 13 years ago
• Categories: Sony

Sony filed a patent (2011-107450) in Japan for a 50mm f/1.4 and f/1.2 lenses:

Three different calculations were described in the patent:

• Example 1
  • Focal length: 49.98mm
  • Aperture: 1.442
  • Half angle of view: 23.73°
  • One aspherical element
• Example 2
  • Focal length: 51.54mm
  • Aperture: 1.443
  • Half angle of view: 23.17°
  • No aspherical elements
• Example 4
  • Focal length: 51.55mm
  • Aperture: 1.233
  • Half angle of view: 23.02°
  • One aspherical element