Olympus already had a Teleconverter for its fouirthird mount (see here), now a new patent surfaced over the web that shows 1.4X teleconverter patent for M4/3 mount. Details translated by google below
Description and self-interpretation of the patent literature
- Patent Publication No. 2013-235217
- Publication date 2013.11.21
- Filing date 2012.5.11
- Related 2013-235218
- Example 1 master lens
- Focal length f = 40.80 – 147.00mm
- Fno. 2.88
- Angle of view 2ω = 29.79 – 8.28 °
- BF 32.137 – 28.750mm
- 195.839mm – 151.882 total length
- Image height 10.82mm
- 17 pieces of 15-group lens configuration
- Two four-sided aspherical
- One ED glass
- One Super ED glass
- Example 1 converter lens
- Focal length f = 57.06 – 205.60mm
- Fno. 4.03
- Angle of view 2ω = 21.85 – 6.07 °
- BF 14.200mm
- 209.103mm – 165.146 total length
- Image height 10.82mm
- Magnification 1.40
- Five 4-group lens configuration (positive and negative positive positive and negative)
- One ED glass
