Lens form
Bi-convex
Plano-convex
Positive meniscus
Bi-concave
Optical glass
N-BK7 · crown
N-F2 · flint
Fused silica
Ray spectrum
White · RGB dispersion
486 nm · blue
589 nm · yellow
656 nm · red
Center view
Converging lens
15 rays · Snell tracing
Object
Real image
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Effective focal length
77.5 mm
+12.9 D
Image distance
93.7 mm
real · inverted
Magnification
−0.21×
NA 0.31
Surface radius
80 mm
Center thickness
12 mm
Clear diameter
60 mm
Object distance
450 mm
Object height
45 mm