US 2004/0136095 A1 — Takashi Suzuki
| 11 ELEMENTS / 10 GROUPS |
| SOURCE FOCAL LENGTH 35.76mm; COMPUTED 35.78mm |
| Design f/3.6; modeled transmission approximately f/3.83 |
| INFINITY PRESCRIPTION; FINITE FOCUS NOT MODELED |
The source describes rear focusing by L8–L11 but gives only infinity spacings. The marketed 0.50 m minimum focus distance is not modeled.
| Element | Type | Glass |
|---|---|---|
| L1 | Positive Meniscus | NBF1 (HOYA spectral proxy; production glass unconfirmed) |
| L2 | Negative Meniscus | J-SF03 (HIKARI spectral proxy; production glass unconfirmed) |
| L3 | Negative Meniscus | NBFD10 (HOYA spectral proxy; production glass unconfirmed) |
| L4 | Positive Meniscus | N-FK5 (SCHOTT spectral proxy; production glass unconfirmed) |
| L5 | Negative Meniscus | S-LAL8 (OHARA spectral proxy; production glass unconfirmed) |
| L6 | Positive Meniscus | S-TIH6 (OHARA spectral proxy; production glass unconfirmed) |
| L7 | Positive Meniscus | J-KF6 (HIKARI spectral proxy; production glass unconfirmed) |
| L8 | Negative Meniscus | NBFD10 (HOYA spectral proxy; production glass unconfirmed) |
| L9 | Biconvex Positive | S-FPL51 (OHARA spectral proxy; production glass unconfirmed) |
| L10 | Negative Meniscus | S-NPH53 (OHARA spectral proxy; production glass unconfirmed) |
| L11 | Positive Meniscus | N-FK5 (SCHOTT spectral proxy; production glass unconfirmed) |