JP 2001-350095 A — Makoto Mitsusaka
| 16 GLASS SUBSTRATES / 12 GROUPS |
| DESIGN 28.92-193.14 mm |
| MODELED f/3.63-5.88 |
| 2 ASPHERICAL SURFACES |
| G2 INNER FOCUS |
CONSTRAINED_RECONSTRUCTION: G2 moves alone toward the object; D5 + D15 is conserved at each zoom station; close states are code-solved for a fixed image plane and a 0.45 m object-to-image distance. The patent publishes infinity states only.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus | S-TIH53WN (OHARA) |
| L2 | Positive Meniscus | S-BSM15 (OHARA) |
| L3 | Positive Meniscus | S-BSM15 (OHARA) |
| L4r | Neg. Meniscus (1× Asph) | Unmatched (thin replica/aspheric layer; nd=1.514210, vd=51.4) |
| L4 | Negative Meniscus | S-LAH60 (OHARA) |
| L5 | Biconcave Negative | S-LAH55V (OHARA) |
| L6 | Biconvex Positive | S-TIH53WN (OHARA) |
| L7 | Biconcave Negative | S-LAH65V (OHARA) |
| L8 | Biconvex Positive | S-TIH53WN (OHARA) |
| L9 | Biconvex Positive | S-NSL3 (OHARA) |
| L10 | Biconvex Positive | S-NSL36 (OHARA) |
| L11 | Negative Meniscus | S-TIH53WN (OHARA) |
| L12 | Positive Meniscus | S-TIH10 (OHARA) |
| L13 | Negative Meniscus | S-LAH58 (OHARA) |
| L14 | Biconvex Positive (1× Asph) | S-BAL42 (OHARA) |
| L15 | Biconvex Positive | S-NSL3 (OHARA) |
| L16 | Negative Meniscus | S-LAH53 (OHARA) |