Tamron Patent for 14-300mm f/3.5-6.3 Di III VC MFT Lens

Tamron has filed a new patent in Japan. The patent describes a 14-300mm f/3.5-6.3 Di VC lens for mirrorless cameras with Micro Four Thirds image sensors.

Tamron already has the 14-150mm F/3.5-5.8 Di III lens for Micro Four Thirds cameras which costs around $600 and now it looks like they are working on a more magnified version of this lens.

Patent also shows 200 and 300mm tele model variations and the aperture stands at f/3.5-6.3 with VC (lens stabilization). See patent details below.

Tamron 14-300mm f/3.5-6.3 Di III VC MFT Lens Patent

Explanation self interpretation of patent literature

• Patent Publication No. 2014-219479
  • Published 2014.11.20
  • Filing date 2013.5.2
• Example
  

  embodiment

  Example	Magnification	Focal distance	Fno.	Half angle	Paraxial image height	Lens constitution	Aspheric surface
  One	13.47	14.40-71.00-194.00	3.45-6.15-6.5	46.0-11.21-4.23	14.91- 14.07- 14.34	13 group 17 sheets	Six-sided four
  Two	12.60	15.40-71.00-194.00	3.6-6.29-6.5	44.33-11.09-4.12	15.04- 13.91- 13.97	13 group 17 sheets	Four faces three
  Three	13.11	16.40-71.00-215.00	3.6-6.2-6.5	42.96-11.21-3.77	15.27- 14.07- 14.18	13 group 16 sheets	Four faces three
  Four	14.94	16.40-71.00-244.98	3.46-6.16-6.5	43.08-11.21-3.31	15.34- 14.07- 14.16	13 group 17 sheets	Four faces three
  Five	15.59	17.45-71.00-272.00	3.46-6.16-6.5	41.3-11.21-3.19	15.33- 14.07- 14.17	13 group 17 sheets	Four faces three
  Six	18.76	14.5-71.00-272.02	3.46-6.0-6.5	45.69-11.21-3.00	14.85- 14.08- 14.25	11 group 18 sheets	Six-sided four
  Seven	17.99	15.4-71.00-277.00	3.46-6.1-6.5	43.95-11.00-2.89	14.85- 13.80- 13.96	12 groups 18 sheets	Six-sided four
  Eight	18.87	15.4-71.00-290.65	3.6-6.0-6.5	43.95-11.00-2.75	14.85- 13.80- 13.96	12 group 17 sheets	Six-sided four
  Nine	19.12	16.5-71.00-310.50	3.6-6.1-6.5	42.78-11.21-2.63	15.27- 14.07- 14.25	12 group 17 sheets	Six-sided four
  Ten	15.70	18.5-70.98-290.40	3.6-6.1-6.5	40.00-11.21-2.78	15.52- 14.06- 14.08	12 group 17 sheets	Six-sided four
  Eleven	20.07	14.5-71.0-291.012	3.6-6.1-6.5	45.3-11.22-2.81	14.653- 14.084- 14.284	12 group 17 sheets	Six-sided four
  Twelve	14.37	13.5-71.0-194	3.6-6.1-6.5	47.1-11.20-4.19	14.532- 14.058- 14.21	12 group 17 sheets	Six-sided four

• Tamron patent
  • 4-group zoom of positive and negative, positive
  • Inner focus (the second group)
  • Anti-vibration (part of the third group, Example 6-10 Part 1 of the fourth group)

via Egami