Patent: Canon EF-S 15-105mm F/2.8-5.6 STM Lens

patent of canon 15-105 EF-S lens

Canon has just filed a new patent of  EF-S 15-105mm F2.8-5.6 STM lens. It is similar to the current Canon EF-S 18-135mm f/3.5-5.6 IS STM Lens.

Patent Publication No. 2015-118141(Google Translated)

  • Published 2015.6.25
  • Filing date 2013.12.17

Example

embodiment
example zoom ratio focal length Fno. half angle Image height length BF
1 4.12 24.75 52.09 101.92 3.60 4.81 5.83 41.16 22.56 11.98 21.64 146.25 166.83 195.25 38.99 58.34 73.70
2 6.81 15.40 22.95 104.92 2.88 3.39 5.60 41.57 30.76 7.42 13.66 149.46 154.42 222.88 38.13 46.49 77.97

Source: EG

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