US 8,228,605 B2 — Akio Arakawa, Lai Wei
| 17 ELEMENTS / 12 GROUPS |
| DESIGN 71.75–292.00mm |
| MODELED f/4.122–5.853 |
| 2ω = 33.67°–8.46° |
| ALL-SPHERICAL |
NO_INTERNAL_RECONSTRUCTION: Example 2 publishes infinity-focus zoom spacings only. Tamron's 1.5 m production MOD is retained as metadata; no internal close-focus motion is modeled.
| Element | Type | Glass |
|---|---|---|
| L101 | Biconvex Positive | 487702 class (vendor unspecified) |
| L102 | Negative Meniscus | 699301 class (vendor unspecified) |
| L103 | Biconvex Positive | 439950 class (vendor unspecified) |
| L104 | Biconcave Negative | 773496 class (vendor unspecified) |
| L105 | Biconcave Negative | 773496 class (vendor unspecified) |
| L106 | Biconvex Positive | 847238 class (vendor unspecified) |
| L107 | Negative Meniscus | 618634 class (vendor unspecified) |
| L109 | Biconvex Positive | 883408 class (vendor unspecified) |
| L110 | Biconvex Positive | K-PFK80 / MC-FCD1-M20 class (production supplier unspecified) |
| L111 | Biconcave Negative | 904313 class (vendor unspecified) |
| L112 | Biconvex Positive | 487702 class (vendor unspecified) |
| L113 | Biconcave Negative | 911353 class (vendor unspecified) |
| L114 | Biconvex Positive | 517522 class (vendor unspecified) |
| L115 | Biconvex Positive | 806333 class (vendor unspecified) |
| L116 | Biconcave Negative | 773496 class (vendor unspecified) |
| L117 | Biconvex Positive | 806407 class (vendor unspecified) |
| L118 | Negative Meniscus | 773496 class (vendor unspecified) |