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2.0mm Diameter x 2.5mm Length NIR I Coated, N-BK7 Drum Lens

Diameter (mm):
Drum Lens
NIR I (600-1050nm)
Coating Specification:
Ravg ≤0.5% @ 600 - 1050nm
Diameter Tolerance (μm):
Index of Refraction nd:
Length (mm):
Length Tolerance (μm):
Radius R (mm):
Radius Tolerance (μm):
Surface Quality:
Wavelength Range (nm):
600 - 1050

Product Family Description

  • Easier to Mount and Handle Than Standard Ball Lenses

Drum lenses are glass spheres, ground down axially to provide a mounting surface. The ground circumference D simplifies handling issues typically associated with ball lenses. Ideal for optical transmission in fiber communications. Type B Drum lenses have a polished plano-surface for direct fiber contact and perform as elongated PCX lenses.

Technical Information

D Radius R Length Length L2 Stock No.
Type A Drum Lenses
2mm 1.25mm 2.5mm 1.5mm #45-548
2.4mm 1.5mm 3mm 1.8mm #45-549
3.2mm 2mm 4mm 2.4mm #45-550
4mm 2.5mm 5mm 3mm #45-551
Type B Half-Drum Lenses
2mm 1.25mm 2mm 1.5mm #46-524
2.4mm 1.5mm 2.4mm 1.8mm #46-525
3.2mm 2mm 3.2mm 2.4mm #46-526
4mm 2.5mm 4mm 3mm #46-527

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