US 2020/0379223 A1 Example 1 - FUJIFILM / Tomioka
| 17 elements / 12 groups (patent) |
| Production lens: 16 elements / 12 groups |
| f = 45.95-97.96 mm (computed) |
| FNo = 4.10-4.11 (patent); f/4 marketed |
| 5 aspherical surfaces on 3 elements |
| G3b optical image-stabilization group |
Internal focus by L25 moving toward the object. Example 1 publishes infinity-focus zoom separations only, so close-focus travel is not modeled.
| Element | Type | Glass |
|---|---|---|
| L11 | Negative Meniscus | TAFD35 / TAFD35L (Hoya) |
| L12 | Positive Meniscus | 620603 crown class (BACD16 / S-BSM16 / N-SK16 family; patent vd is slightly high) |
| L21 | Negative Meniscus | TAFD40 (Hoya) |
| L22 | Positive Meniscus (2x Asph) | M-BACD12 / MC-BACD12 class (Hoya moldable crown; no exact catalog match) |
| L23 | Biconcave Negative | S-FSL5 (Ohara) / FK5 class |
| L24 | Biconvex Positive | S-TIH53 (Ohara) / N-SF57 class |
| L25 | Plano-Concave Negative | S-LAL7 / S-LAL7Q (Ohara) |
| L31 | Biconvex Positive (2x Asph) | M-LAC130 / MC-LAC130 (Hoya moldable lanthanum crown) |
| L32 | Biconcave Negative | S-TIM22 (Ohara) / N-SF2 class |
| L33 | Biconvex Positive | S-FPL55 (Ohara) / FCD100-class Super ED |
| L34 | Positive Meniscus (1x Asph) | Unmatched optical resin (W3bp = 1.228; OKP-class high-dispersion polymer) |
| L35 | Biconcave Negative | S-FSL5 (Ohara) / FK5 class |
| L36 | Biconvex Positive | S-FPL51 (Ohara) / FCD1-class ED |
| L37 | Biconcave Negative | S-BAH10 (Ohara) / BAF10 / N-BAF10 class |
| L38 | Biconvex Positive | BSC7 (Hoya) / S-BSL7 / N-BK7 class |
| L39 | Negative Meniscus | TAFD37 (Hoya) |
| L41 | Positive Meniscus | E-FDS2 (Hoya) |
Detailed analysis available in the interactive viewer above.