MEYER OPTIK GÖRLITZ ORESTEGOR 500mm f/5.6

DE 1 980 417, sole example

4 ELEMENTS / 4 GROUPS
f = 497.79 mm DESIGN / 500 mm MARKETED
f/5.6
6×6 / 10° PUBLISHED
ALL-SPHERICAL

Focus Mechanism

Focus travel is not modeled. The patent provides one fixed prescription; 6.0 m is the marketed closest-focus distance, but no internal focus spacing law is modeled.

Optical Elements (4 physical)

ElementTypeGlass
L1Biconvex PositiveUnmatched (510619 crown-class coordinate; supplier unresolved)
L2Negative Meniscus740282 - dense-flint class (supplier unresolved)
L3Plano-Convex617366 - F3/F4/PBM4 class (supplier unresolved)
L4Biconcave Negative658509 — dense crown; N-SSK5 compatible spectral proxy (historical supplier/melt unresolved)