KONICA HEXANON 38mm f/2.8 (Konica C35) — Optical Cross-Section & Ray Tracing

Home / Lenses / Konica / KONICA HEXANON 38mm f/2.8 (Konica C35)KONICA HEXANON 38mm f/2.8 (Konica C35)US 3,615,126 Embodiment I — Kojima / Konishiroku
4 ELEMENTS / 3 GROUPS
f = 38mm nominal
F/2.8
2ω ≈ 59°
REAR STOP
Focus MechanismUnit focus: all four glass elements translate together; the data file varies only the back-focus gap from infinity to 1.0m.
Optical Elements (4)ElementTypeGlass
L1Positive MeniscusS-LAH65V / TAF3 class (OHARA/Hoya, 804/466)
L2Biconcave NegativeE-LAF11 (Hikari, nearest modern catalog equivalent to patent 757/317)
L3Negative MeniscusS-TIH10 / E-FD10 / N-SF10 class (728/283)
L4Biconvex PositiveUnmatched (high-index dense flint, 831/265)
AnalysisDetailed analysis available in the interactive viewer above.

Element	Type	Glass
L1	Positive Meniscus	S-LAH65V / TAF3 class (OHARA/Hoya, 804/466)
L2	Biconcave Negative	E-LAF11 (Hikari, nearest modern catalog equivalent to patent 757/317)
L3	Negative Meniscus	S-TIH10 / E-FD10 / N-SF10 class (728/283)
L4	Biconvex Positive	Unmatched (high-index dense flint, 831/265)