JP 2023-130072 A, Example 1 — Yuki Shibata
| 9 ELEMENTS / 6 GROUPS |
| DESIGN f = 36.08 mm |
| DESIGN F/2.01 |
| ALL SPHERICAL |
PUBLISHED infinity and β = 0.50 states. G1 (G1A, the stop and G1B, L1–L4r) moves 16.00 mm toward the object while G2 (L5f–L6) stays fixed, so ZD11 opens from 1.62 to 17.62 mm and the 12.49 mm back gap does not change. The near object sits 95.58 mm from the first surface, 161.94 mm from the image plane; the production lens is rated 0.163 m at 1:2.
| Element | Type | Glass |
|---|---|---|
| L1 | Biconvex Positive | TAC8 (HOYA catalog equivalent; production supplier unspecified) |
| L2 | Positive Meniscus | TAC8 (HOYA catalog equivalent; production supplier unspecified) |
| L3f | Biconcave Negative | E-FD13 (HOYA catalog equivalent; production supplier unspecified) |
| L3r | Positive Meniscus | E-FDS1 (HOYA catalog equivalent; production supplier unspecified) |
| L4f | Negative Meniscus | S-TIM35 (OHARA catalog equivalent; production supplier unspecified) |
| L4r | Biconvex Positive | S-LAH96 (OHARA catalog equivalent; production supplier unspecified) |
| L5f | Positive Meniscus | TAFD55 (HOYA catalog equivalent; production supplier unspecified) |
| L5r | Negative Meniscus | S-NBH53V (OHARA catalog equivalent; production supplier unspecified) |
| L6 | Negative Meniscus | S-NPH1 (OHARA catalog equivalent; production supplier unspecified) |