US 3,336,094 — Karl Heinrich Macher
| 14 ELEMENTS / 9 GROUPS |
| 80-240mm |
| f/4 |
| 24×36 mm |
| ALL SPHERICAL |
Only infinity-focus zoom states are modeled. Front-ring focusing is documented, but finite-focus optical spacings are unpublished.
| Element | Type | Glass |
|---|---|---|
| L1 | Biconvex Positive | PC3 — coordinate-compatible spectral proxy (supplier unresolved) |
| L2 | Positive Meniscus | Unmatched (raw patent coordinate nd=1.50378, νd=76.7) |
| L3 | Negative Meniscus | 785261 — SF56A-class dense flint (supplier unproven) |
| L4 | Positive Meniscus | 501565 — K10-class crown (supplier unproven) |
| L5 | Biconcave Negative | 487700 — FK5-class crown (supplier unproven) |
| L6 | Biconcave Negative | TAC4 — coordinate-compatible spectral proxy (supplier unresolved) |
| L7 | Positive Meniscus | 785261 — SF56A-class dense flint (supplier unproven) |
| L8 | Biconvex Positive | 620603 — SK16/BSM16-class crown (supplier unproven) |
| L9 | Biconvex Positive | PC3 — coordinate-compatible spectral proxy (supplier unresolved) |
| L10 | Biconvex Positive | 623569 — SK10/BSM10-class crown (supplier unproven) |
| L11 | Biconcave Negative | 785261 — SF56A-class dense flint (supplier unproven) |
| L12 | Biconvex Positive | S-TIL6 — coordinate-compatible spectral proxy (supplier unresolved) |
| L13 | Biconcave Negative | 744449 — LAF2/LAM2-class lanthanum glass (supplier unproven) |
| L14 | Biconvex Positive | 699301 — TIM35/SF15-class flint (supplier unproven) |