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.
Specifications
Material: | N-BK7, grade A fine annealed |
Diameter: | +0/-0.20mm |
Clear aperture: | >80% of diameter |
Radius: | +0/-0.0015mm |
Length: | +/-0.03mm |
Centration: | < 3 arc minutes |
Surface quality: | 60-40 S/D |
Irregularity: | λ/4@632.8nm |
Coating: | With or without AR coating |
Bevel: | < 0.3mm x 45° |
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.
Specifications
Material: | N-BK7 |
Diameter: | +0/-0.20mm |
Clear aperture: | >80% of diameter |
Radius: | +0/-0.0015mm |
Length: | +/-0.03mm |
Centration: | < 3 arc minutes |
Surface quality: | 60-40 S/D |
Irregularity: | λ/4@632.8nm |
Coating: | With or without AR coating |
Bevel: | < 0.3mm x 45° |
