US 2019/0265504 A1 EXAMPLE 1 — FUJIFILM / H. SAITO
| 19 ELEMENTS / 14 GROUPS |
| f = 200 mm (200.0 marketed, 194.01 design) |
| F/2 |
| 2ω = 9.0° (design) |
| 0 ASPHERICAL SURFACES |
Inner focus — cemented doublet G2 (L2a+L2b) translates 11.55 mm toward the object between infinity and the patent's 1.57 m close focus. Driven by twin linear motors for quiet, high-speed autofocus; small moving mass (~25 g glass).
| Element | Type | Glass |
|---|---|---|
| L1a | Biconvex Positive | S-TIM25 family (OHARA, 673 321) |
| L1b | Biconvex Positive | S-FPL55 (OHARA, 439 948) |
| L1c | Biconvex Positive | S-FPL51 (OHARA, 497 816) |
| L1d | Negative Meniscus | S-LAH55V family (OHARA, 835 427) |
| L1e | Biconvex Positive | S-FPL51 (OHARA, 497 816) |
| L1f | Negative Meniscus | S-LAH58 family (OHARA, 911 353) |
| L1g | Biconvex Positive | S-NPH1 (OHARA, 808 228) |
| L1h | Negative Meniscus | S-NBH5 / S-LAH53 family (OHARA, 800 298) |
| L2a | Negative Meniscus | S-TIL1 family (OHARA, 548 458) |
| L2b | Plano-Convex Positive | S-LAL14 (OHARA, 697 555) |
| L3a | Negative Meniscus | S-TIM5 family (OHARA, 603 380) |
| L3b | Biconvex Positive | S-NPH3 (OHARA, 959 175) |
| L3c | Negative Meniscus | S-LAL59 / S-LAL18 family (OHARA, 734 515) |
| L3d | Negative Meniscus | S-LAM66 family (OHARA, 801 350) |
| L3e | Plano-Convex Positive | S-LAH95 family (OHARA, 904 313) |
| L3f | Negative Meniscus | S-NPH1 (OHARA, 808 228) |
| L3g | Biconvex Positive | S-LAH53 family (OHARA, 806 409) |
| L3h | Biconvex Positive | S-NBH5 family (OHARA, 654 397) |
| L3i | Negative Meniscus | S-NBH5 / S-LAH53 family (OHARA, 800 298) |
Detailed analysis available in the interactive viewer above.