MEYER OPTIK GÖRLITZ PRIMAGON 35mm f/4.5

DE 1 749 770 U, sole example

4 ELEMENTS / 4 GROUPS
35 mm MARKETED / 34.575 mm MODELED EFL
f/4.5 CALIBRATED STOP
62° PATENT FULL IMAGE ANGLE
ALL-SPHERICAL

Focus Mechanism

Focus travel is not modeled. The patent's sole example supplies one fixed prescription only. Period Meyer literature gives 0.4 m minimum focus, but no production unit-focus travel or internal spacing law is encoded.

Optical Elements (4 physical)

ElementTypeGlass
L1Negative MeniscusFK5 — compatible spectral proxy (historical supplier/melt unresolved)
L2Biconvex PositiveN-SSK5 — compatible spectral proxy (historical supplier/melt unresolved)
L3Biconcave NegativeF7 — compatible spectral proxy (historical supplier/melt unresolved)
L4Biconvex PositiveH-ZK1 — compatible spectral proxy (historical supplier/melt unresolved)