JP1975-110330 — Yoshisato Fujioka
| 9 ELEMENTS / 8 GROUPS |
| 24mm f/2.8 |
| 84° |
| 0.3m MINIMUM FOCUS |
| ALL SPHERICAL |
Production minimum focus is 0.3 m; patent Example 1 publishes only the infinity prescription. Focus status: NO_INTERNAL_RECONSTRUCTION; no internal spacing changes are modeled.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus | 667484 — nd/νd coordinate code (vendor unresolved) |
| L2 | Biconvex Positive | 603607 — nd/νd coordinate code (vendor unresolved) |
| L3 | Negative Meniscus | 658573 — nd/νd coordinate code (vendor unresolved) |
| L4 | Biconcave Negative | 518590 — nd/νd coordinate code (vendor unresolved) |
| L5 | Biconvex Positive | 757317 — E-LAF11 catalog equivalent (production supplier unspecified) |
| L6 | Biconvex Positive | 678555 — nd/νd coordinate code (vendor unresolved) |
| L7 | Biconcave Negative | 755275 — nd/νd coordinate code (vendor unresolved) |
| L8 | Positive Meniscus | 640602 — nd/νd coordinate code (vendor unresolved) |
| L9 | Biconvex Positive | 697556 — nd/νd coordinate code (vendor unresolved) |