Olympus filed a new lens patent for Olympus M.Zuiko 40-200mm f/4 lens.
Description and self-interpretation of the patent literature (Translated by Google)
- Patent Publication No. 2013-117667
- Publication date 2013.6.13
- Filing date 2011.12.5
- Example 1
- Focal length f = 40.80-90.00-196.00mm
- Fno. 4.08
- Angle of view 2ω = 30.57-13.85-6.46 °
- BF 31.51-27.21-24.06mm
- 158.58-170.08-193.58mm length
- Image height 11.15mm
- Olympus patents
- 5-group zoom of positive and negative positive positive and negative
- I earn a zoom rate
- Inner Focus (Group 4)
- To center the aperture thinned entire optical system
- 5-group zoom of positive and negative positive positive and negative
via: EG
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