US 2015/0103211 A1, Numerical Example 1 — Takakazu Bito, Hiroaki Suzuki, Yoshiaki Kurioka, Yusuke Yonetani
| 14 ELEMENTS / 11 GROUPS |
| NORMALIZED MODEL 4.640-103.140mm |
| MODELED f/2.9006-2.9001 |
| 9 ASPHERICAL SURFACES / 5 ASPHERICAL ELEMENTS |
Not modeled — G4 moves imageward for close focus; the patent provides only infinity-focus zoom spacings.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus | J-SF03 (coordinate-compatible spectral proxy; supplier unconfirmed) |
| L2 | Biconvex Positive | H-FK61 (coordinate-compatible spectral proxy; supplier unconfirmed) |
| L3 | Positive Meniscus | FCD505 (coordinate-compatible spectral proxy; supplier unconfirmed) |
| L4 | Neg. Meniscus (2× Asph) | M-TAFD307 (coordinate-compatible spectral proxy; supplier unconfirmed) |
| L5 | Biconcave Negative | J-LASF016 (coordinate-compatible spectral proxy; supplier unconfirmed) |
| L6 | Biconvex Positive | N-SF66 (coordinate-compatible spectral proxy; supplier unconfirmed) |
| L7 | Negative Meniscus | J-SF03 (coordinate-compatible spectral proxy; supplier unconfirmed) |
| L8 | Pos. Meniscus (2× Asph) | M-BACD12 (coordinate-compatible spectral proxy; supplier unconfirmed) |
| L9 | Biconvex Positive | N-FK5 (coordinate-compatible spectral proxy; supplier unconfirmed) |
| L10 | Biconcave Negative | E-FD2 (coordinate-compatible spectral proxy; supplier unconfirmed) |
| L11 | Biconvex Positive (2× Asph) | PCS1 (coordinate-compatible spectral proxy; supplier unconfirmed) |
| L12 | Negative Meniscus | H-FK61 (coordinate-compatible spectral proxy; supplier unconfirmed) |
| L13 | Biconvex Positive (2× Asph) | PCS1 (coordinate-compatible spectral proxy; supplier unconfirmed) |
| L14 | Biconcave Negative (1× Asph) | Unmatched (nd=1.54410, νd=56.1; current six-vendor sweep) |