NIKON NIKKOR Z 135mm f/1.8 S Plena

WO 2024/147268 A1 — Mami Muratani, Hiroshi Yamamoto, Tomonori Kuribayashi, Takuro Ono

16 ELEMENTS / 14 GROUPS
f ≈ 132.3 mm
F/1.85
2ω ≈ 18.6°
1 ASPHERICAL SURFACE

Focus Mechanism

Source focus: G2 (negative L7) moves imageward 13.597 mm and G4 (positive L13) objectward 6.184 mm. Other groups remain fixed within 0.001 mm table rounding. Near distance is inferred from the finite conjugate, including the omitted filter thickness.

Optical Elements (16 physical)

ElementTypeGlass
L1Positive MeniscusJ-SFH4 (inferred catalog counterpart; production material unspecified)
L2Positive MeniscusJ-FKH1 (inferred catalog counterpart; production material unspecified)
L3Positive MeniscusJ-FKH1 (inferred catalog counterpart; production material unspecified)
L4Biconvex PositiveJ-FKH1 (inferred catalog counterpart; production material unspecified)
L5Biconcave NegativeNBFD25 (inferred catalog counterpart; production material unspecified)
L6Pos. Meniscus (1× Asph)N-BK7 (inferred catalog counterpart; production material unspecified)
L7Negative Meniscus697555 — lanthanum crown (patent coordinate; vendor unresolved)
L8Positive MeniscusS-NPH1 (inferred catalog counterpart; production material unspecified)
L9Biconcave NegativeNBFD25 (inferred catalog counterpart; production material unspecified)
L10Positive MeniscusJ-PSKH1 (inferred catalog counterpart; production material unspecified)
L11Biconvex PositiveS-LAH63Q (inferred catalog counterpart; production material unspecified)
L12Negative MeniscusS-LAH55VS (inferred catalog counterpart; production material unspecified)
L13Positive MeniscusNBFD30 (inferred catalog counterpart; production material unspecified)
L14Biconcave NegativeS-LAH51 (inferred catalog counterpart; production material unspecified)
L15Positive MeniscusS-TIH53 (inferred catalog counterpart; production material unspecified)
L16Negative MeniscusJ-LASF09A (inferred catalog counterpart; production material unspecified)