US 7,218,457 B2 — Takayuki Sensui
| 14 elements / 11 groups |
| Patent example; compatible glass counterparts |
| All-spherical |
| Centered VR configuration |
| F-mount (FX) |
| f/2.88 patent aperture |
Source infinity, 0.5× and 1× focus stations: G2 moves imageward and G3 objectward. Published BF changes by 0.63904 mm despite the fixed-group description, producing that common camera-relative offset. The source varying iris diameter and lateral VR motion are not simulated.
| Element | Type | Glass |
|---|---|---|
| L1 | Biconvex Positive | S-LAH66 — compatible catalog counterpart; patent identity unspecified |
| L2 | Positive Meniscus | BACD4 — compatible catalog counterpart; patent identity unspecified |
| L3 | Biconcave Negative | S-TIH1 — compatible catalog counterpart; patent identity unspecified |
| L4 | Plano-Convex | S-LAH66 — compatible catalog counterpart; patent identity unspecified |
| L5 | Biconcave Negative | BAF3 — compatible catalog counterpart; patent identity unspecified |
| L6 | Biconcave Negative | S-TIL6 — compatible catalog counterpart; patent identity unspecified |
| L7 | Positive Meniscus | S-TIH6 — compatible catalog counterpart; patent identity unspecified |
| L8 | Biconvex Positive | S-FPL51 — compatible catalog counterpart; patent identity unspecified |
| L9 | Negative Meniscus | S-TIH53W — compatible catalog counterpart; patent identity unspecified |
| L10 | Biconvex Positive | S-BSM16 — compatible catalog counterpart; patent identity unspecified |
| L11 | Negative Meniscus | S-LAH53 — compatible catalog counterpart; patent identity unspecified |
| L12 | Positive Meniscus | S-TIH6 — compatible catalog counterpart; patent identity unspecified |
| L13 | Negative Meniscus | S-NSL3 — compatible catalog counterpart; patent identity unspecified |
| L14 | Biconvex Positive | S-LAH51 — compatible catalog counterpart; patent identity unspecified |