OLYMPUS ZUIKO AUTO-W 28mm f/2 — Optical Cross-Section & Ray Tracing

Home / Lenses / Olympus / OLYMPUS ZUIKO AUTO-W 28mm f/2OLYMPUS ZUIKO AUTO-W 28mm f/2US 3,862,794 A↗ — Toru Fujii
9 ELEMENTS / 8 GROUPS
f = 28.000 mm
F/2
2ω = 75°
ALL-SPHERICAL
Focus MechanismProduction lens: floating-element manual focus. Patent data: infinity state only. Viewer: BFD-only surrogate to 0.3 m.
Optical Elements (9 physical)ElementTypeGlass
L1Positive MeniscusLACL60 class (HOYA reference 640/602; patent pair 640/603)
L2Negative MeniscusPC1 (HOYA catalog equivalent; production supplier unspecified; patent 504668)
L3Negative MeniscusPC1 (HOYA catalog equivalent; production supplier unspecified; patent 504668)
L4aNegative MeniscusPC1 (HOYA catalog equivalent; production supplier unspecified; patent 504668)
L4bPlano-Convex PositiveK-LaFn11 (SUMITA; 720/460 class)
L5aBiconvex PositiveTAF4 class (HOYA reference; 788/475)
L5bBiconcave NegativeFD140 (HOYA; 762/266 class)
L6Positive MeniscusK-LaK14 (SUMITA; 697/556)
L7Biconvex PositiveK-LaK14 (SUMITA; 697/556)

Element	Type	Glass
L1	Positive Meniscus	LACL60 class (HOYA reference 640/602; patent pair 640/603)
L2	Negative Meniscus	PC1 (HOYA catalog equivalent; production supplier unspecified; patent 504668)
L3	Negative Meniscus	PC1 (HOYA catalog equivalent; production supplier unspecified; patent 504668)
L4a	Negative Meniscus	PC1 (HOYA catalog equivalent; production supplier unspecified; patent 504668)
L4b	Plano-Convex Positive	K-LaFn11 (SUMITA; 720/460 class)
L5a	Biconvex Positive	TAF4 class (HOYA reference; 788/475)
L5b	Biconcave Negative	FD140 (HOYA; 762/266 class)
L6	Positive Meniscus	K-LaK14 (SUMITA; 697/556)
L7	Biconvex Positive	K-LaK14 (SUMITA; 697/556)