Quarton Ø6 Spherical Glass Lens with a long Effective focus length which can provide more stable optical system, and can be operated over a wide operating temperature range. Quarton Ø6 Spherical Glass Lens is designed specifically for use as a collimator in combination with a diode laser. Parameters

Lens Material : BK7
Lens Diameter : φ6.0 mm
Center Thickness : 1.5 mm
Edge Thickness : 0.89 mm
Design Wavelength : 532 nm
Clear Aperture (CA) : φ5.0mm
Numerical Aperture (NA) : 0.17
Effective Focal Length (EFL) : 14.85mm
Back Focal Length (BFL) : 13.8 mm
Transmittance (%) : ≧97%
Storage Temperature : -40 to 85 ℃
Operating Temperature : -30 to 85 ℃