SCHNEIDER-KREUZNACH ANGULON 210mm f/6.8 — Optical Cross-Section & Ray Tracing

Home / Lenses / Schneider-Kreuznach / SCHNEIDER-KREUZNACH ANGULON 210mm f/6.8SCHNEIDER-KREUZNACH ANGULON 210mm f/6.8US 1,882,530 A↗ — Albrecht Wilhelm Tronnier
6 ELEMENTS / 2 GROUPS
MODEL EFL 210.021 mm
F/6.8
ALL-SPHERICAL
1.05× SCALE OF 200 mm PATENT CONSTRUCTION
Focus MechanismThe patent supplies a fixed optical cell. View-camera bellows focusing is not modeled, and no minimum focus distance is established.
Optical Elements (6 physical)ElementTypeGlass
L1Negative MeniscusF5 — sodium-D-compatible spectral proxy (supplier unconfirmed)
L2Biconvex PositiveS-BAL2 — sodium-D-compatible spectral proxy (supplier unconfirmed)
L3Biconcave NegativeFK3 — sodium-D-compatible spectral proxy (supplier unconfirmed)
L4Biconcave NegativeFK3 — sodium-D-compatible spectral proxy (supplier unconfirmed)
L5Biconvex PositiveS-BAL2 — sodium-D-compatible spectral proxy (supplier unconfirmed)
L6Negative MeniscusF5 — sodium-D-compatible spectral proxy (supplier unconfirmed)

Element	Type	Glass
L1	Negative Meniscus	F5 — sodium-D-compatible spectral proxy (supplier unconfirmed)
L2	Biconvex Positive	S-BAL2 — sodium-D-compatible spectral proxy (supplier unconfirmed)
L3	Biconcave Negative	FK3 — sodium-D-compatible spectral proxy (supplier unconfirmed)
L4	Biconcave Negative	FK3 — sodium-D-compatible spectral proxy (supplier unconfirmed)
L5	Biconvex Positive	S-BAL2 — sodium-D-compatible spectral proxy (supplier unconfirmed)
L6	Negative Meniscus	F5 — sodium-D-compatible spectral proxy (supplier unconfirmed)