Nikon AI Zoom-Nikkor 50-135mm f/3.5S — Optical Cross-Section & Ray Tracing

Home / Lenses / Nikon / Nikon AI Zoom-Nikkor 50-135mm f/3.5SNikon AI Zoom-Nikkor 50-135mm f/3.5SUS 4,497,547↗ — Kiyoshi Hayashi
16 elements / 13 groups
51.35-131.5 mm design EFL
f/3.5 constant aperture
47.26°-18.06° patent field
All-spherical Yamaji-type zoom
Focus MechanismFront-group unit focus in production and patent text; patent close-focus spacings are not published, so this file models only the infinity-focus zoom states.
Optical Elements (16 physical)ElementTypeGlass
1L1Negative MeniscusS-TIH6 (OHARA; 805254)
1L2Positive MeniscusS-LAL12 class (OHARA; 678553, patent vd rounded to 55.6)
1L3Positive MeniscusS-BAH11 (OHARA; 667483)
2L1Plano-Concave NegativeS-LAL14 class (OHARA; 697555, patent vd rounded to 55.6)
2L2Biconcave NegativeS-LAH64 class (OHARA; 788474)
2L3Positive MeniscusS-TIH6 (OHARA; 805254)
3L1Biconcave NegativeS-LAL52 (OHARA catalog equivalent for patent 670576; production supplier unspecified)
3L2Biconvex PositiveS-BAH32 catalog equivalent (patent 672389; production supplier unspecified)
4L1Biconvex PositiveS-LAL8 class (OHARA; 713539, patent vd rounded to 54.0)
4L2Positive MeniscusN-SK11 / BACD11 class (564608 dense-crown code)
4L3Negative MeniscusNBFD2 catalog equivalent (patent 796410; production supplier unspecified)
4L4Biconvex PositiveS-NSL3 (OHARA; 518590)
4L5Biconcave NegativeJ-LAFH3 (HIKARI; 795286)
4L6Biconvex PositiveS-BSL7 / N-BK7 class (517641 borosilicate-crown code)
4L7Negative MeniscusN-BAF10 class (670471 barium-flint code)
4L8Plano-Convex PositiveS-BAH27 class (OHARA; 702412, patent vd rounded to 41.0)

Element	Type	Glass
1L1	Negative Meniscus	S-TIH6 (OHARA; 805254)
1L2	Positive Meniscus	S-LAL12 class (OHARA; 678553, patent vd rounded to 55.6)
1L3	Positive Meniscus	S-BAH11 (OHARA; 667483)
2L1	Plano-Concave Negative	S-LAL14 class (OHARA; 697555, patent vd rounded to 55.6)
2L2	Biconcave Negative	S-LAH64 class (OHARA; 788474)
2L3	Positive Meniscus	S-TIH6 (OHARA; 805254)
3L1	Biconcave Negative	S-LAL52 (OHARA catalog equivalent for patent 670576; production supplier unspecified)
3L2	Biconvex Positive	S-BAH32 catalog equivalent (patent 672389; production supplier unspecified)
4L1	Biconvex Positive	S-LAL8 class (OHARA; 713539, patent vd rounded to 54.0)
4L2	Positive Meniscus	N-SK11 / BACD11 class (564608 dense-crown code)
4L3	Negative Meniscus	NBFD2 catalog equivalent (patent 796410; production supplier unspecified)
4L4	Biconvex Positive	S-NSL3 (OHARA; 518590)
4L5	Biconcave Negative	J-LAFH3 (HIKARI; 795286)
4L6	Biconvex Positive	S-BSL7 / N-BK7 class (517641 borosilicate-crown code)
4L7	Negative Meniscus	N-BAF10 class (670471 barium-flint code)
4L8	Plano-Convex Positive	S-BAH27 class (OHARA; 702412, patent vd rounded to 41.0)