JP 2016-6455 A — Tomoya Koga
| 11 ELEMENTS / 8 GROUPS |
| 18-50mm F4-5.6 |
| 0.3m MFD |
| 1 HYBRID ASPHERICAL SURFACE |
| 1 ANOMALOUS-DISPERSION ELEMENT |
PUBLISHED: G1b (hybrid L12 + L13) moves objectward from infinity to the patent's 300 mm state; D2 decreases while D7 increases by the same travel at each zoom station. No internal focus reconstruction is used.
| Element | Type | Glass |
|---|---|---|
| L11 | Negative Meniscus | 804466 (vendor unresolved) |
| L12g | Biconcave Negative (Hybrid Substrate) | 497816 (vendor unresolved) |
| L12r | Bonded Aspheric Resin Layer | Unmatched (synthetic resin layer; chemistry unpublished) |
| L13 | Positive Meniscus | 805254 (vendor unresolved) |
| L21 | Biconvex Positive | 618634 (vendor unresolved) |
| L22 | Biconvex Positive | 487702 (vendor unresolved) |
| L23 | Negative Meniscus | 847238 (vendor unresolved) |
| L31 | Positive Meniscus | 805254 (vendor unresolved) |
| L32 | Biconcave Negative | 788474 (vendor unresolved) |
| L41 | Positive Meniscus | 618634 (vendor unresolved) |
| L42 | Biconvex Positive | S-NSL5 (OHARA catalog equivalent for patent 522598; production supplier unspecified) |
| L43 | Negative Meniscus | S-NBH55 (OHARA catalog equivalent for patent 800299; production supplier unspecified) |