US 7,411,745 B2, Example 3 — Mitsuaki Wada
| 13 ELEMENTS / 9 GROUPS |
| DESIGN f = 195 mm |
| DESIGN F/1.84 |
| ALL SPHERICAL |
| 3 ED + 1 SUPER ED ELEMENTS |
PUBLISHED internal-focus states from US 7,411,745 B2 Example 3: G2 moves 9.5995 mm toward the image, with D10 5.5000→15.0995 mm, D16 15.5239→5.9244 mm and BF 59.4575→59.4386 mm. The patent prints β = −0.1258 and no distance; these spacings compute to about 1.897 m object to image, against Nikon's 1.9 m minimum focus.
| Element | Type | Glass |
|---|---|---|
| L11 | Biconvex Positive | J-FKH1 (HIKARI catalog equivalent; production supplier unspecified) |
| L12 | Biconvex Positive | J-FKH1 (HIKARI catalog equivalent; production supplier unspecified) |
| L13 | Biconcave Negative | E-LAKH1 (HIKARI catalog equivalent; production supplier unspecified) |
| L14 | Positive Meniscus | Unmatched (Super ED glass; no public catalog row) |
| L15 | Negative Meniscus | E-LAKH1 (HIKARI catalog equivalent; production supplier unspecified) |
| L16 | Positive Meniscus | J-FKH1 (HIKARI catalog equivalent; production supplier unspecified) |
| L21 | Positive Meniscus | NBFD3 (HOYA catalog equivalent; production supplier unspecified) |
| L22 | Biconcave Negative | KF3 (SUMITA catalog equivalent; production supplier unspecified) |
| L23 | Positive Meniscus | E-LAFH2 (HIKARI catalog equivalent; production supplier unspecified) |
| L24 | Biconcave Negative | S-BSM10 (OHARA catalog equivalent; production supplier unspecified) |
| L31 | Biconvex Positive | E-LAKH1 (HIKARI catalog equivalent; production supplier unspecified) |
| L32 | Negative Meniscus | S-TIH10 (OHARA catalog equivalent; production supplier unspecified) |
| L33 | Biconvex Positive | S-BSM81 (OHARA catalog equivalent; production supplier unspecified) |