NIKON W-NIKKOR 35mm f/1.8

US 2,896,506 — Hideo Azuma

7 elements / 5 groups
f = 35.005 mm
F/1.8
2ω = 63°
all-spherical

Optical Elements (7 physical)

ElementTypeGlass
L1Positive MeniscusJ-LAK10 class (Nikon J-series match)
L2Positive MeniscusUnmatched (vintage high-index crown, 662/577)
L3Negative MeniscusF9 (HOYA legacy catalog equivalent; patent code 621380, supplier unspecified)
L4Negative MeniscusJ-SF11 class (Nikon J-series match)
L5Positive MeniscusJ-LAK10 class (Nikon J-series match)
L6Biconvex PositiveJ-LAK9 class (Nikon J-series match)
L7Biconcave NegativeJ-SF11 class (Nikon J-series match)