JP 2022-182997 A — Yasuto Suzuki, Yoshiaki Kurioka, Shunichiro Yoshinaga
| 9 ELEMENTS / 8 GROUPS |
| DESIGN f = 48.25 mm |
| DESIGN F/1.86 |
| 6 ASPHERICAL SURFACES / 3 ELEMENTS |
PUBLISHED: L7, the single negative element of G2, alone moves 4.8163 mm toward the image between infinity and the patent's near state (object 349 mm ahead of the first surface, about 0.45 m object to image, magnification −0.131). G1, the stop and G3 stay fixed. Intermediate positions are linearly interpolated between the two printed states.
| Element | Type | Glass |
|---|---|---|
| L1 | Positive Meniscus | Unmatched (patent nd=1.85996, νd=30.5; supplier unconfirmed) |
| L2 | Negative Meniscus | FCD1 / N-PK52A class (coordinate candidate; supplier unconfirmed) |
| L3 | Biconcave Negative | Unmatched (patent nd=1.65794, νd=31.1; supplier unconfirmed) |
| C1 | Optical Cement Layer | Optical cement (patent nd=1.56732, vd=42.8) |
| L4 | Biconvex Positive | Unmatched (patent nd=1.59269, νd=65.3; supplier unconfirmed) |
| L5 | Biconvex Positive | FCD515 / FCD505 class (coordinate candidate; supplier unconfirmed) |
| L6 | Biconvex Positive (2× Asph) | Unmatched (patent nd=1.51570, νd=55.8; supplier unconfirmed) |
| L7 | Neg. Meniscus (2× Asph) | Unmatched (patent nd=1.51607, νd=56.3; supplier unconfirmed) |
| L8 | Biconvex Positive (2× Asph) | Unmatched (patent nd=1.51570, νd=55.8; supplier unconfirmed) |
| L9 | Negative Meniscus | Unmatched (patent nd=1.54157, νd=51.7; supplier unconfirmed) |