NIKON SERIES E 135mm f/2.8 — Optical Cross-Section & Ray Tracing

Home / Lenses / Nikon / NIKON SERIES E 135mm f/2.8NIKON SERIES E 135mm f/2.8US 4,303,314 Embodiment 3 — Sei Matsui / Nippon Kogaku
4 ELEMENTS / 4 GROUPS
f ≈ 135.1 mm
F/2.8
2ω = 18.1°
ALL SPHERICAL
Focus MechanismUnit focus. Patent gives the infinity prescription only; production-scaled BF increases from 49.110 mm at infinity to 64.118 mm at the 1.5 m MFD.
Optical Elements (4)ElementTypeGlass
L1Positive Meniscus620586 — patent crown glass (nd=1.62041, νd=58.6; no catalog match verified)
L2Positive Meniscus620586 — patent crown glass (nd=1.62041, νd=58.6; no catalog match verified)
L3Negative MeniscusS-TIH1 (OHARA)
L4Positive Meniscus785261 — dense flint (line-index backfill; patent nd=1.78470, νd=26.1)
AnalysisDetailed analysis available in the interactive viewer above.

Element	Type	Glass
L1	Positive Meniscus	620586 — patent crown glass (nd=1.62041, νd=58.6; no catalog match verified)
L2	Positive Meniscus	620586 — patent crown glass (nd=1.62041, νd=58.6; no catalog match verified)
L3	Negative Meniscus	S-TIH1 (OHARA)
L4	Positive Meniscus	785261 — dense flint (line-index backfill; patent nd=1.78470, νd=26.1)