CN 211955965 U, Example 1 — Liu Ruijun, Chen Baofeng
| 10 ELEMENTS / 9 GROUPS |
| 56 mm MARKETED / 55.90 mm PATENT |
| f/1.4 MARKETED / F/1.412 MODEL |
| 2ω = 28.2° |
| ALL-SPHERICAL |
| 1-ELEMENT INNER FOCUS |
PUBLISHED inner focus: L31/G3 translates 4.01 mm imageward; D1 1.00→5.01 mm and D2 7.86→3.85 mm. The modeled close endpoint is the patent's 0.63 m state; Viltrox markets the production lens at 0.6 m MFD.
| Element | Type | Glass |
|---|---|---|
| L11 | Negative Meniscus | 648338 class (vendor unresolved) |
| L12 | Biconvex Positive | 729547 class (vendor unresolved) |
| L13 | Positive Meniscus | TAFD33 (catalog-equivalent spectral proxy; supplier unresolved) |
| L14 | Negative Meniscus | 717295 class (vendor unresolved) |
| L21 | Biconcave Negative | 699301 class (vendor unresolved) |
| L22 | Biconvex Positive | TAFD33 (catalog-equivalent spectral proxy; supplier unresolved) |
| L23 | Biconvex Positive | 911353 class (vendor unresolved) |
| L31 | Negative Meniscus | 729547 class (vendor unresolved) |
| L41 | Biconvex Positive | J-FK01A (catalog-equivalent spectral proxy; supplier unresolved) |
| L42 | Negative Meniscus | 567428 class (vendor unresolved) |