US 7,864,451 B2 - First Numerical Example
| 15 elements / 12 groups |
| f = 99.996 mm design |
| F/2.92 design, f/2.8 marketed |
| 23.4° diagonal angle of view |
| 1× macro, floating inner focus |
| All spherical, 1 UD element |
Floating inner focus: negative L2 moves imageward and positive L4 moves objectward from infinity to 1×; L1, L3, and L5 remain stationary.
| Element | Type | Glass |
|---|---|---|
| E1 | Biconvex Positive | S-LAL18 (OHARA) |
| E2 | Positive Meniscus | S-LAL18 (OHARA) |
| E3 | Biconcave Negative | S-LAM66 (OHARA) |
| E4 | Biconvex Positive | S-FPL51 (OHARA) |
| E5 | Biconcave Negative | S-NBH8 (OHARA) |
| E6 | Biconcave Negative | S-TIL6 (OHARA) |
| E7 | Positive Meniscus | S-TIH53 (OHARA) |
| E8 | Positive Meniscus | S-LAM66 (OHARA) |
| E9 | Biconvex Positive | S-PHM52 (OHARA) |
| E10 | Biconvex Positive | S-LAL18 (OHARA) |
| E11 | Biconcave Negative | S-TIH53 (OHARA) |
| E12 | Positive Meniscus | S-TIH53 (OHARA) |
| E13 | Biconcave Negative | S-LAL10 (OHARA) |
| E14 | Negative Meniscus | S-NBM51 (OHARA) |
| E15 | Biconvex Positive | S-LAM60 (OHARA) |
Detailed analysis available in the interactive viewer above.