VOIGTLÄNDER HELIAR 100mm f/4.5 (Second Asymmetric Form) — Optical Cross-Section & Ray Tracing

Home / Lenses / Voigtländer / VOIGTLÄNDER HELIAR 100mm f/4.5 (Second Asymmetric Form)VOIGTLÄNDER HELIAR 100mm f/4.5 (Second Asymmetric Form)DE 143889 C↗ — Carl August Hans Harting
5 ELEMENTS / 3 GROUPS
f = 99.858 mm DESIGN
f/4.342 MODELED / f/4.5 DESIGNATION
92 mm IMAGE DIAMETER
49.47° FULL FIELD
ALL-SPHERICAL
Focus MechanismNO_INTERNAL_RECONSTRUCTION: DE 143889 C publishes only the infinity prescription and no MFD or movement law. closeFocusM=1.0 is a schema-required UI placeholder, not a claimed source value; no variable optical gap is modeled.
Optical Elements (5 physical)ElementTypeGlass
a1Negative MeniscusUnmatched (DE143889C a1; historical nD/nG′ pair only)
b1Positive MeniscusUnmatched (DE143889C b1; historical nD/nG′ pair only)
cBiconcave NegativeUnmatched (DE143889C c; historical nD/nG′ pair only)
b2Biconvex PositiveUnmatched (DE143889C b2; historical nD/nG′ pair only)
a2Negative MeniscusUnmatched (DE143889C a2; historical nD/nG′ pair only)

Element	Type	Glass
a1	Negative Meniscus	Unmatched (DE143889C a1; historical nD/nG′ pair only)
b1	Positive Meniscus	Unmatched (DE143889C b1; historical nD/nG′ pair only)
c	Biconcave Negative	Unmatched (DE143889C c; historical nD/nG′ pair only)
b2	Biconvex Positive	Unmatched (DE143889C b2; historical nD/nG′ pair only)
a2	Negative Meniscus	Unmatched (DE143889C a2; historical nD/nG′ pair only)