US 2017/0003486 A1, Example 5 — Suguru Inoue
| 17 ELEMENTS / 12 GROUPS |
| 70-300mm f/4-5.6 (marketed) |
| 72-290mm f/4.16-5.83 (patent design) |
| 1.2 m MFD / 0.25x max. magnification (production) |
| NANO USM / OPTICAL IS (production) |
CONSTRAINED_RECONSTRUCTION: the patent publishes infinity-focus zoom states only. Close focus at 1.2 m is a code-solved L5-only imageward translation constrained to conserve D25 + D28 at each zoom position; L5 travel is +2.287968 / +4.496202 / +12.930456 mm at 72 / 144 / 290 mm.
| Element | Type | Glass |
|---|---|---|
| E1 | Plano-Convex Positive | S-FSL5 (coordinate-compatible OHARA spectral proxy; production supplier unspecified) |
| E2 | Negative Meniscus | S-LAH60 (coordinate-compatible OHARA spectral proxy; production supplier unspecified) |
| E3 | Positive Meniscus | S-FPL51 (coordinate-compatible OHARA spectral proxy; production supplier unspecified) |
| E4 | Positive Meniscus | S-TIL6 (coordinate-compatible OHARA spectral proxy; production supplier unspecified) |
| E5 | Negative Meniscus | S-NSL3 (coordinate-compatible OHARA spectral proxy; production supplier unspecified) |
| E6 | Biconcave Negative | S-LAH66 (coordinate-compatible OHARA spectral proxy; production supplier unspecified) |
| E7 | Positive Meniscus | S-NBH56 (coordinate-compatible OHARA spectral proxy; production supplier unspecified) |
| E8 | Biconcave Negative | S-LAH66 (coordinate-compatible OHARA spectral proxy; production supplier unspecified) |
| E9 | Biconvex Positive | S-BAH11 (coordinate-compatible OHARA spectral proxy; production supplier unspecified) |
| E10 | Biconvex Positive | S-FSL5 (coordinate-compatible OHARA spectral proxy; production supplier unspecified) |
| E11 | Negative Meniscus | S-LAH99 (coordinate-compatible OHARA spectral proxy; production supplier unspecified) |
| E12 | Negative Meniscus | S-LAH99 (coordinate-compatible OHARA spectral proxy; production supplier unspecified) |
| E13 | Biconvex Positive | S-FSL5 (coordinate-compatible OHARA spectral proxy; production supplier unspecified) |
| E14 | Biconvex Positive | S-LAL12 (coordinate-compatible OHARA spectral proxy; production supplier unspecified) |
| E15 | Positive Meniscus | S-NPH1 (coordinate-compatible OHARA spectral proxy; production supplier unspecified) |
| E16 | Biconcave Negative | S-NSL36 (coordinate-compatible OHARA spectral proxy; production supplier unspecified) |
| E17 | Negative Meniscus | S-FSL5 (coordinate-compatible OHARA spectral proxy; production supplier unspecified) |