Ricoh filed a patent for a Pentax 35-80mm f/4 full frame lens

Pentax 35-80mm f:4 full frame lens patent
Ricoh filed a patent in a Japan for a 35-80mm f/4 full frame lens that is most likely designed for the Pentax K-1 DSLR camera. Here are the details:

  • Patent No: 2016-99586
  • Published on 2016.5.30
  • Filing date: 2014.11.26
  • Zoom ratio: 2.19
  • FNO: 4.1 – 4.1 – 4.1
  • Focal length: 36.11 – 51.17 – 79.07
  • Half angle of view: 31.9 – 22.9 – 15.0
  • Image height: 21.64 – 21.64 – 21.64
  • Back focus: 48.06 – 55.95 – 58.90
  • Overall length: 160.34 – 166.92 – 192.65

Ricoh recently also filed patents for a 100-300mm f/4 and 200mm f/2.8 full frame DSLR lenses.

Via Egami

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