FUJIFILM FUJINON XF 16mm f/2.8 R WR — Optical Cross-Section & Ray Tracing

Home / Lenses / Fujifilm / FUJIFILM FUJINON XF 16mm f/2.8 R WRFUJIFILM FUJINON XF 16mm f/2.8 R WRUS 2020/0073096 A1↗, Example 3 — Ryosuke Nagami
10 ELEMENTS / 8 GROUPS
16mm f/2.8 (production)
f = 16.48mm, FNo = 2.88 (Example 3)
2ω = 89.2° (Example 3)
2 ASPHERICAL ELEMENTS
Focus MechanismInner focus: only G2/L21 moves objectward. Infinity and the patent 1 m state are published; the 0.17 m endpoint is a constrained one-DOF reconstruction using FUJIFILM's sensor-plane MFD and conserved DD15 + DD17 = 7.61 mm.
Optical Elements (10 physical)ElementTypeGlass
L11Negative Meniscus540597 — barium crown class
L12Neg. Meniscus (2× Asph)516641 — crown coordinate class
L13Positive Meniscus729547 — lanthanum crown class
L14Biconvex Positive001255 — high-index flint class
L15Biconcave Negative720347 — short-flint coordinate class
L16Pos. Meniscus (2× Asph)583594 — barium crown coordinate class
L17Biconcave Negative847238 — dense flint class
L18Biconvex Positive729547 — lanthanum crown class
L21Biconvex Positive835427 — high-index lanthanum flint class
L31Negative Meniscus855248 — dense flint class

Element	Type	Glass
L11	Negative Meniscus	540597 — barium crown class
L12	Neg. Meniscus (2× Asph)	516641 — crown coordinate class
L13	Positive Meniscus	729547 — lanthanum crown class
L14	Biconvex Positive	001255 — high-index flint class
L15	Biconcave Negative	720347 — short-flint coordinate class
L16	Pos. Meniscus (2× Asph)	583594 — barium crown coordinate class
L17	Biconcave Negative	847238 — dense flint class
L18	Biconvex Positive	729547 — lanthanum crown class
L21	Biconvex Positive	835427 — high-index lanthanum flint class
L31	Negative Meniscus	855248 — dense flint class