JP S53-133028 — Canon / Tsuji Sadahiko
| 6 elements / 4 groups |
| f ≈ 100.00 mm |
| f/2 |
| 2ω = 24° |
| all spherical |
Unit-extension focus model from the infinity prescription; the patent gives no separate close-focus or floating-group table.
| Element | Type | Glass |
|---|---|---|
| L1 | Positive Meniscus | S-BSM15 (OHARA) |
| L2 | Positive Meniscus | S-BSM14 (OHARA) |
| L3 | Negative Meniscus | S-TIH18 (OHARA) |
| L4 | Biconcave Negative | S-TIM25 (OHARA) |
| L5 | Negative Meniscus | S-FTM16 (OHARA) |
| L6 | Biconvex Positive | S-LAH53 (OHARA) |
Detailed analysis available in the interactive viewer above.