JP 2012-159613 A Example 1 - Sony / Tamron
| 30 mm f/3.5 APS-C E-mount |
| JP 2012-159613 A Example 1 |
| 7 elements / 6 groups; 9 modeled optical media |
| 4 aspherical surfaces; 1 ED element |
| Internal focus; 1:1 macro |
Internal focus by axial movement of the single negative G12/L121 hybrid focus element; G11 and G13 remain fixed. Patent Example 1 varies D11 from 1.51 to 7.57 mm and D14 from 12.43 to 6.36 mm.
| Element | Type | Glass |
|---|---|---|
| L111 | Negative Meniscus (hybrid host) | S-PHM52 (OHARA) |
| L111r | Hybrid Aspheric Resin Layer | UV-curable optical resin (patent-listed nd/vd) |
| L112 | Biconvex Positive | S-TIM22 (OHARA, non-recommended dense flint) |
| L113 | Nearly Plano-Concave Negative | S-TIH4 (OHARA) |
| L114 | Biconvex Positive ED | S-FPL51 (OHARA) / FCD1 class |
| L115 | Biconvex Positive (2x Asph) | M-PCD51 (Hoya, precision-molding phosphate crown) |
| L121 | Biconcave Negative (hybrid host) | S-FSL5 (OHARA) / N-FK5 class |
| L121r | Hybrid Aspheric Resin Layer | UV-curable optical resin (patent-listed nd/vd) |
| L131 | Biconvex Positive | S-TIL6 (OHARA) / N-LLF6 class |
Detailed analysis available in the interactive viewer above.