FUJIFILM FUJINON XF 23mm f/2 R WR — Optical Cross-Section & Ray Tracing

Home / Lenses / Fujifilm / FUJIFILM FUJINON XF 23mm f/2 R WRFUJIFILM FUJINON XF 23mm f/2 R WRUS 2017/0351051 A1↗, Example 1 — Daiki Kawamura
10 elements / 6 groups
f = 22.377 mm design; 23 mm marketed
F2.06 design; F2 marketed
2ω = 64.8° design
4 aspherical surfaces on 2 elements
Single-element inner focus
Focus MechanismInner focus by G2 only. The patent beta=-0.041 row is stored exactly before the constrained production 0.22 m endpoint; G1 and G3 remain fixed.
Optical Elements (10 physical)ElementTypeGlass
L11Negative MeniscusS-BSL7 (OHARA)
L12Biconvex PositiveS-LAH58 (OHARA)
L13Plano-Concave NegativeS-TIM28 (OHARA)
L14Biconcave Negative (2× Asph)M-TAFD305 (Hoya catalog equivalent; patent code 849401, supplier unspecified)
L15Plano-Convex PositiveS-LAH59 (OHARA)
L16Biconcave NegativeS-TIM28 (OHARA)
L17Biconvex PositiveS-LAH58 (OHARA)
L21Biconcave Negative (2× Asph)803405 - high-index lanthanum flint (likely PGM aspheric melt; no exact public catalog match)
L31Biconcave NegativeS-TIH23 (OHARA)
L32Biconvex PositiveS-LAH65V (OHARA)

Element	Type	Glass
L11	Negative Meniscus	S-BSL7 (OHARA)
L12	Biconvex Positive	S-LAH58 (OHARA)
L13	Plano-Concave Negative	S-TIM28 (OHARA)
L14	Biconcave Negative (2× Asph)	M-TAFD305 (Hoya catalog equivalent; patent code 849401, supplier unspecified)
L15	Plano-Convex Positive	S-LAH59 (OHARA)
L16	Biconcave Negative	S-TIM28 (OHARA)
L17	Biconvex Positive	S-LAH58 (OHARA)
L21	Biconcave Negative (2× Asph)	803405 - high-index lanthanum flint (likely PGM aspheric melt; no exact public catalog match)
L31	Biconcave Negative	S-TIH23 (OHARA)
L32	Biconvex Positive	S-LAH65V (OHARA)