JP 2012-173420 A, Numerical Example 2 — Koji Ogata, Kazuteru Kawamura, Yasuharu Yamada, Hirohiko Kimata
| 10 ELEMENTS / 9 GROUPS |
| DESIGN f = 12.24-48.96 mm |
| DESIGN F/3.64-6.48 |
| 6 ASPHERICAL SURFACES / 3 ELEMENTS |
| 1 ED / 1 HR ELEMENT |
| MACRO MODE NOT MODELED |
The patent prints infinity and 0.35 m spacings at wide, middle and tele; those six states are exact. G2 is the focusing group and moves objectward for closer focus. The intermediate zoom positions are an inferred reconstruction, not the factory cam: G3 is the variator, G2 follows a single-reversal law (imageward, then objectward, as claim 2 states), and G4 is solved for infinity focus at each position. Between printed stations the near state is solved for the object-to-image distance interpolated between the printed near states, which the patent labels 0.35 m. The marketed minimum focus distance in normal mode is 0.35 m; the macro mode is not modeled.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus | S-LAH66 (OHARA catalog equivalent; production supplier unspecified) |
| L2 | Aspherical Negative Meniscus | S-BAL42 (OHARA catalog equivalent; production supplier unspecified) |
| L3 | Positive Meniscus | S-NPH1 (OHARA catalog equivalent; production supplier unspecified) |
| L4 | Negative Meniscus | S-LAL61 (OHARA catalog equivalent; production supplier unspecified) |
| L5 | Aspherical Biconvex Positive | S-BAL42 (OHARA catalog equivalent; production supplier unspecified) |
| L6a | Negative Meniscus | S-LAH60 (OHARA catalog equivalent; production supplier unspecified) |
| L6b | Biconvex Positive | S-FPL51 (OHARA catalog equivalent; production supplier unspecified) |
| L7 | Negative Meniscus | S-LAH55 (OHARA catalog equivalent; production supplier unspecified) |
| L8 | Aspherical Positive Meniscus | Unmatched (optical plastic per the patent; polymer unpublished) |
| L9 | Positive Meniscus | FF8 (HOYA catalog equivalent; production supplier unspecified) |