JP 2022-085382 A Example 3 — Canon / Takumi Suzuki
| 9 elements / 7 groups |
| f = 16.49 mm design / 16 mm marketed |
| F/2.90 design / f/2.8 marketed |
| 2ω = 95.68° patent trace / 108°10′ marketed diagonal |
| 1 PMo aspherical element / 2 aspherical surfaces |
Patent example is infinity-only. BF close-focus value is a unit-focus visualization approximation from Canon's 0.26× maximum magnification; it is not a published patent spacing.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus | S-BSM14 (OHARA) |
| L2 | Negative Meniscus | S-FSL5 (OHARA) |
| L3 | Biconvex Positive | S-LAH60 (OHARA) |
| L4 | Biconvex Positive | S-LAH55VS (OHARA) |
| L5 | Negative Meniscus | S-LAH95 (OHARA) |
| L6 | Biconcave Negative | S-TIM28 (OHARA) |
| L7 | Biconvex Positive | FCD515 (HOYA) |
| L8 | Pos. Meniscus (2× Asph) | Unmatched (Canon PMo optical resin, nd=1.53110, νd=55.9) |
| L9 | Positive Meniscus | S-BSM15 (OHARA) |
Detailed analysis available in the interactive viewer above.