JPH04238311A — Susumu Sato
| 9 ELEMENTS / 7 GROUPS |
| MARKETED 600mm f/4 |
| DESIGN f = 587.9998 mm |
| DESIGN F/4.11 |
| 2ω ≈ 4.208° |
| INNER FOCUS |
| ALL SPHERICAL |
CONSTRAINED_RECONSTRUCTION: negative G2 translates imageward by 11.2563148248 mm from infinity to the Nikon 6.0 m MFD, with d11+d16 fixed at 25.0888 mm; the patent-published β=-0.13 state is retained only in the audit.
| Element | Type | Glass |
|---|---|---|
| L11 | Biconvex Positive | J-FKH1 (HIKARI catalog equivalent; production supplier unspecified) |
| L12 | Biconvex Positive | J-FKH1 (HIKARI catalog equivalent; production supplier unspecified) |
| L13 | Biconcave Negative | E-LAF11 (HIKARI catalog equivalent; production supplier unspecified) |
| L14 | Negative Meniscus | J-LAK8 (HIKARI catalog equivalent; production supplier unspecified) |
| L15 | Positive Meniscus | J-PSKH1 (HIKARI catalog equivalent; production supplier unspecified) |
| L21 | Positive Meniscus | SF6 (SCHOTT catalog equivalent; production supplier unspecified) |
| L22 | Biconcave Negative | J-LAK8 (HIKARI catalog equivalent; production supplier unspecified) |
| L23 | Biconcave Negative | LAC13 (HOYA catalog equivalent; production supplier unspecified) |
| L31 | Biconvex Positive | J-FKH1 (HIKARI catalog equivalent; production supplier unspecified) |