They are specifically designed for fiber optics applications. They are mostly useful for collimators, isolators, switches, collimator array and WDM. Compare to other gradient index lens, they have several advantages including low cost, low insertion loss in long working distance and wide working distance range. We can also provide custom designed C-lens per customer's requirement with our experienced optical design engineers.
Item
Specifications
Material
N-SF11 or others optical glass
Diameter φ
1.0+0.005/-0.01mm；1.8+0.005/-0.01mm
Angle α
8°
Length tolerance
±0.04mm
Flatness
λ@ 632.8nm
Surface Quality
MIL40-20
Clear Aperture
90%
Coating
Specified by customer