CN 210573001 U Example 1 — Laowa / Li Dayong
| 27 ELEMENTS / 19 GROUPS |
| f ≈ 23.7 mm |
| F/14 |
| 2ω ≈ 84.1° |
| ALL SPHERICAL |
Inner focus — L23 (Foc, f = +69 mm) translates toward object. Patent data from ∞ to 1.0× magnification.
| Element | Type | Glass |
|---|---|---|
| L1 | Neg. Meniscus, convex to object | H-ZLaF4A (CDGM) |
| P1 | Pos. Meniscus, concave to object (Rod Lens) | H-ZLaF75B (CDGM, tentative) |
| L3 | Biconvex Positive | H-FK61 (CDGM) |
| L4 | Biconcave Negative | H-ZF88A (CDGM) |
| L5 | Neg. Meniscus, convex to object | H-ZF88A (CDGM) |
| L6 | Biconvex Positive | H-QK3L (CDGM) |
| L7 | Biconvex Positive | N-SF66 / E-FDS1 class (923209) |
| P2 | Plane-Parallel Plate | H-ZF88A (CDGM) |
| P3 | Plane-Parallel Plate | H-ZF88A (CDGM) |
| L8 | Neg. Meniscus, convex to object | H-ZF88A (CDGM) |
| L9 | Biconvex Positive | H-ZF88A (CDGM) |
| L10 | Biconcave Negative | H-ZF4A (CDGM) |
| L11 | Neg. Meniscus, convex to object | H-ZF7LA (CDGM) |
| L12 | Biconvex Positive | H-ZLaF52A (CDGM) |
| L13 | Biconvex Positive | H-ZLaF52A (CDGM) |
| L14 | Neg. Meniscus, concave to object | H-ZF7LA (CDGM) |
| L15 | Biconcave Negative | H-ZF4A (CDGM) |
| L16 | Biconvex Positive | H-ZF88A (CDGM) |
| L17 | Neg. Meniscus, concave to object | H-ZF88A (CDGM) |
| L18 | Pos. Meniscus, convex to object | H-QK3L (CDGM) |
| L19 | Biconvex Positive | N-SF66 / E-FDS1 class (923209) |
| L20 | Biconcave Negative | H-ZF88A (CDGM) |
| L21 | Biconvex Positive | H-FK61 (CDGM) |
| L22 | Neg. Meniscus, concave to object | H-ZF7LA (CDGM) |
| L23 | Pos. Meniscus, concave to object | H-ZF88A (CDGM) |
| L24 | Biconcave Negative | H-ZF2 (CDGM) |
| L25 | Plano-Convex Positive | H-ZLaF4A (CDGM) |
Detailed analysis available in the interactive viewer above.