VOIGTLÄNDER NOKTON 50mm f/1.5 Aspherical L39 — Optical Cross-Section & Ray Tracing

Home / Lenses / Voigtländer / VOIGTLÄNDER NOKTON 50mm f/1.5 Aspherical L39VOIGTLÄNDER NOKTON 50mm f/1.5 Aspherical L39JP 2000-330014 A↗ — Koji Shiokawa
6 ELEMENTS / 5 GROUPS
DESIGN f = 51.60 mm
DESIGN F/1.53
2 ASPHERICAL SURFACES / 1 ELEMENT
INFINITY PRESCRIPTION ONLY
Focus MechanismInfinity-only published prescription; close focus is not modeled. The production lens focuses manually with rangefinder coupling down to 0.9 m, but the patent publishes no focusing movement.
Optical Elements (6 physical)ElementTypeGlass
L1Positive MeniscusTAF3 (HOYA, coordinate equivalent; supplier unconfirmed)
L2Positive MeniscusTAF3 (HOYA, coordinate equivalent; supplier unconfirmed)
L3Negative MeniscusE-FD10 (HOYA, coordinate equivalent; supplier unconfirmed)
L4Biconcave NegativeE-F2 (HOYA, coordinate equivalent; supplier unconfirmed)
L5Biconvex PositiveTAF3 (HOYA, coordinate equivalent; supplier unconfirmed)
L6Biconvex Positive (2× Asph)LAC13 (HOYA, coordinate equivalent; supplier unconfirmed)

Element	Type	Glass
L1	Positive Meniscus	TAF3 (HOYA, coordinate equivalent; supplier unconfirmed)
L2	Positive Meniscus	TAF3 (HOYA, coordinate equivalent; supplier unconfirmed)
L3	Negative Meniscus	E-FD10 (HOYA, coordinate equivalent; supplier unconfirmed)
L4	Biconcave Negative	E-F2 (HOYA, coordinate equivalent; supplier unconfirmed)
L5	Biconvex Positive	TAF3 (HOYA, coordinate equivalent; supplier unconfirmed)
L6	Biconvex Positive (2× Asph)	LAC13 (HOYA, coordinate equivalent; supplier unconfirmed)