CANON EF-S 18-55mm f/3.5-5.6 — Optical Cross-Section & Ray Tracing

Home / Lenses / Canon / CANON EF-S 18-55mm f/3.5-5.6CANON EF-S 18-55mm f/3.5-5.6JP 2005-092056 A↗, Numerical Example 5 — Takeshi Nishimura
11 ELEMENTS / 9 GROUPS
18-55mm MARKETED
18.0006-54.9988mm DESIGN
f/3.5-5.6 MARKETED
F/3.59-5.99 PATENT ENDPOINTS
1 ASPHERICAL SURFACE
Focus MechanismL1 moves toward the object for closer focus; L2–L4 stay fixed. Travel to 0.28 m is reconstructed from the patent’s focusing mechanism and Canon’s minimum focus distance.
Optical Elements (11 physical)ElementTypeGlass
E1Biconvex Positive516641 class (vendor unresolved)
E2Negative Meniscus623582 class (vendor unresolved)
E3Biconcave Negative623582 class (vendor unresolved)
E4Positive Meniscus847239 class (vendor unresolved)
E5Biconvex Positive573578 class (vendor unresolved)
E6Negative Meniscus847239 class (vendor unresolved)
E7Biconvex Positive487702 class (vendor unresolved)
E8Biconcave Negative620363 class (vendor unresolved)
E9Positive Meniscus755275 class (vendor unresolved)
E10Weak Negative Meniscus (1x Asph)Unmatched (nd=1.583060, vd=30.2; coordinate class 583302)
E11Positive Meniscus516641 class (vendor unresolved)

Element	Type	Glass
E1	Biconvex Positive	516641 class (vendor unresolved)
E2	Negative Meniscus	623582 class (vendor unresolved)
E3	Biconcave Negative	623582 class (vendor unresolved)
E4	Positive Meniscus	847239 class (vendor unresolved)
E5	Biconvex Positive	573578 class (vendor unresolved)
E6	Negative Meniscus	847239 class (vendor unresolved)
E7	Biconvex Positive	487702 class (vendor unresolved)
E8	Biconcave Negative	620363 class (vendor unresolved)
E9	Positive Meniscus	755275 class (vendor unresolved)
E10	Weak Negative Meniscus (1x Asph)	Unmatched (nd=1.583060, vd=30.2; coordinate class 583302)
E11	Positive Meniscus	516641 class (vendor unresolved)