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
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 physical)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 compatible spectral proxy; source νd=29.5; supplier unspecified)
L4Positive MeniscusSF56A (SCHOTT compatible spectral proxy; source nd=1.78470, νd=26.1; supplier unspecified)

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 compatible spectral proxy; source νd=29.5; supplier unspecified)
L4	Positive Meniscus	SF56A (SCHOTT compatible spectral proxy; source nd=1.78470, νd=26.1; supplier unspecified)