CN 115840281 A, Example 4 — Liu Chen
| 15 ELEMENTS / 11 GROUPS |
| f = 27.7066 mm (DESIGN) |
| F/1.2 |
| 2ω = 55.2° (PATENT) |
| 1 ASPHERICAL ELEMENT / 2 ASPHERICAL SURFACES |
| PUBLISHED INNER FOCUS |
PUBLISHED inner focus: patent G4/L41 translates 5.09 mm imageward; D1 (s18) changes 0.94→6.03 mm and D2 (s20) 6.02→0.93 mm. Patent Table 11 labels the near state 0.158 m at an undefined reference plane; closeFocusM uses Viltrox's 0.28 m sensor-referenced minimum shooting distance.
| Element | Type | Glass |
|---|---|---|
| L11 | Positive Meniscus | N-SF66 (catalog-equivalent spectral proxy; supplier unresolved) |
| L12 | Negative Meniscus | H-FK61 (catalog-equivalent spectral proxy; supplier unresolved) |
| L21 | Biconcave Negative | S-TIL2 (catalog-equivalent spectral proxy; supplier unresolved) |
| L22 | Biconvex Positive | H-ZLaF90 (catalog-equivalent spectral proxy; supplier unresolved) |
| L23 | Positive Meniscus | H-ZPK5 (catalog-equivalent spectral proxy; supplier unresolved) |
| L24 | Biconcave Negative | H-ZF1 (catalog-equivalent spectral proxy; supplier unresolved) |
| L25 | Biconvex Positive | H-ZLaF68L (catalog-equivalent spectral proxy; supplier unresolved) |
| L26 | Biconcave Negative | H-ZF52 (catalog-equivalent spectral proxy; supplier unresolved) |
| L27 | Biconvex Positive | TAF5 (catalog-equivalent spectral proxy; supplier unresolved) |
| L31 | Biconvex Positive | TAFD35 (catalog-equivalent spectral proxy; supplier unresolved) |
| L41 | Biconcave Negative | J-SF8 (catalog-equivalent spectral proxy; supplier unresolved) |
| L51 | Biconvex Positive | S-LAH97 (catalog-equivalent spectral proxy; supplier unresolved) |
| L52 | Biconcave Negative | H-ZF52 (catalog-equivalent spectral proxy; supplier unresolved) |
| L53 | Biconvex Positive | H-ZF88 (catalog-equivalent spectral proxy; supplier unresolved) |
| L54 | Neg. Meniscus (2× Asph) | M-TAFD51 (catalog-equivalent spectral proxy; supplier unresolved) |