Ball and Condenser Lenses

Features

• Microspheres are mostly used for coupling optical fibers to laser diodes, another fibers or detectors optically.
• Since these ball lenses are much smaller than normal lenses and all the surfaces are polished, they must be handled carefully, but they contribute to reduction of size and weight of devices.
• AR coated and uncoated are available. AR coatings, single layer MgF₂ antireflection coatings, are chosen from three bands: 400—700nm, 700—900nm, and 1300—1550nm.
• Design wavelength for the focal lengths is 587.6nm (yellow Helium line [d]).