US 2019/0278068 A1 EXAMPLE 2 — HATADA / CANON
| 18 ELEMENTS / 14 GROUPS |
| f = 24.72 – 101.84 mm |
| F/4.12 (design) |
| 2ω ≈ 82.4° – 24.0° |
| 6 ASPHERICAL SURFACES (3 GMo ELEMENTS) |
| 1 UD ELEMENT |
Inner focus — L4 (single element) translates toward image side. Close-focus travel estimated from 0.45 m MFD; patent publishes infinity zoom spacings only.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus | S-TIH6 (OHARA) |
| L2 | Plano-Convex | S-BAL14 (OHARA) |
| L3 | Positive Meniscus | S-BAL14 (OHARA) |
| L4 | Negative Meniscus | S-NPH2 (OHARA) |
| L5 | Biconcave (2× Asph) | L-BAL35 (OHARA) |
| L6 | Biconvex Positive | S-TIH6 (OHARA) |
| L7 | Negative Meniscus | S-LAH65V (OHARA) |
| L8 | Plano-Convex | S-LAH55V (OHARA) |
| L9 | Negative Meniscus | S-NPH2 (OHARA) |
| L10 | Biconvex Positive | MC-7 (HOYA) |
| L11 | Biconcave Negative | S-TIM27 (OHARA) |
| L12 | Positive Meniscus | S-LAH79 (OHARA) |
| L13 | Negative Meniscus | S-TIH53 (OHARA) |
| L14 | Plano-Convex | S-FPL51 (OHARA) |
| L15 | Biconvex Positive (2× Asph) | L-BAL35 (OHARA) |
| L16 | Negative Meniscus | S-BAL14 (OHARA) |
| L17 | Neg. Meniscus (2× Asph) | L-LAM69 (OHARA) |
| L18 | Positive Meniscus | S-LAH65V (OHARA) |
Detailed analysis available in the interactive viewer above.