65 f/2.8 Macro
Patent Publication No. 2011-191743
- 2011.9.29 Release Date
- Filing date 2010.2.16
Example 8
- Focal length f = 65.00mm
- Fno 2.90 – 3.05 – 3.96
- Half angle of 18.41 °
- Image height 21.64
- 145.08mm Length Lens
- Back Focus 38.20 – 47.63 – 37.80mm
- Positive and negative lens group of positive and negative 4
- Inner Focus + Rear Focus
- Group 2, Group 3, Group 4 to move the focus method
180 f/3.5 Macro / 150 f/2.8 Macro / 135 f/2.8 Macro
Patent Publication No. 2011-191743
- 2011.9.29 Release Date
- Filing date 2010.2.16
Example 1
- Focal length f = 180.00mm
- Fno 3.50 – 4.60 – 5.80
- 6.85 ° half angle
- Image height 21.64
- 225.02mm Length Lens
- Back Focus 64.01mm
Example 4
- Focal length f = 150.00mm
- Fno 2.80 – 4.00 – 5.00
- 8.21 ° half angle
- Image height 21.64
- 206.53mm Length Lens
- Back Focus 49.00mm
Example 5
- Focal length f = 135.00mm
- Fno 2.80 – 3.80 – 4.80
- 9.20 ° half angle
- Image height 21.64
- 205.00mm Length Lens
- Back Focus 46.50mm
Four groups of positive and negative lenses accurately
Inner Focus
The combination of convex and concave lens, low dispersion and high dispersion in the most object side lens, chromatic aberration correction
Source [EG]
cr
