WO 2020/230915 A1, Embodiment 1 — Moon-Kyung Kim
| 7 ELEMENTS / 7 GROUPS |
| 24 mm MARKETING / 25.026 mm DESIGN |
| f/2.8 MARKETING / f/2.892 DESIGN |
| 3 ASPHERICAL SURFACES |
| INTERNAL FOCUS |
Published internal focus: G21 (L51–L61) translates 1.08634 mm objectward from infinity to the patent TL=0.2m row; D1 and D2 preserve all three published spacing states. closeFocusM=0.24 m is the production specification and is not asserted to share the patent's ambiguous D0/TL reference plane.
| Element | Type | Glass |
|---|---|---|
| L11 | Negative Meniscus | 437951 — very-low-dispersion crown class (FCD100 coordinate; vendor unresolved) |
| L21 | Negative Meniscus | 986165 — very-high-index flint class (FDS16-W coordinate; vendor unresolved) |
| L31 | Biconvex Positive (1× Asph) | 808409 — high-index class (catalog identity unresolved) |
| L41 | Negative Meniscus (1× Asph) | J-BK7A catalog-equivalent (patent coordinates retained; production supplier unspecified) |
| L51 | Negative Meniscus (1× Asph) | S-TIM35 catalog-equivalent (patent coordinates retained; production supplier unspecified) |
| L61 | Positive Meniscus | 773496 — high-index class (cross-vendor coordinate) |
| L71 | Plano-Concave Negative | 923209 — very-high-index dense-flint class (cross-vendor coordinate) |