JP 2022-067328 A — Daichi Tanoue
| 10 ELEMENTS / 8 GROUPS |
| DESIGN f = 24.00 mm |
| DESIGN F/3.62 |
| 2ω = 81.27° |
| 4 ASPHERICAL SURFACES / 3 ELEMENTS |
| 1 SLD (INFERRED) |
Published inner focus: G2 (L21–L23) translates 3.8358 mm toward the object between infinity and −0.5×; G1, the stop and G3 stay fixed. Both patent states are preserved. The 0.105 m close limit is the patent's object-to-image distance (d0 40.068 mm plus the 65.22 mm track), not the marketed 0.108 m. Intermediate gaps are linearly interpolated, so intermediate distance labels are approximate.
| Element | Type | Glass |
|---|---|---|
| L11 | Neg. Meniscus (1× Asph) | MP-PCD51-70 (HOYA coordinate equivalent; production supplier unconfirmed) |
| L12 | Negative Meniscus | FDS16-W (HOYA coordinate equivalent; production supplier unconfirmed) |
| L13 | Positive Meniscus | TAFD65 (HOYA coordinate equivalent; production supplier unconfirmed) |
| L14 | Positive Meniscus | TAFD65 (HOYA coordinate equivalent; production supplier unconfirmed) |
| L15 | Negative Meniscus | E-FEL2 (HOYA coordinate equivalent; production supplier unconfirmed) |
| L21 | Biconvex Positive | FCD1 (HOYA coordinate equivalent; production supplier unconfirmed) |
| L22 | Negative Meniscus | FDS90 (HOYA coordinate equivalent; production supplier unconfirmed) |
| L23 | Biconvex Positive (2× Asph) | M-TAFD305 (HOYA coordinate equivalent; production supplier unconfirmed) |
| L31 | Biconcave Negative (1× Asph) | M-LAC130 (HOYA coordinate equivalent; production supplier unconfirmed) |
| L32 | Negative Meniscus | BSC7 (HOYA coordinate equivalent; production supplier unconfirmed) |