Deposition Sciences Inc. offers durable antireflection (AR)-coated ball lenses in diameters from 200 µm to 10 mm. The IsoSphere lenses are created using a proprietary low-pressure chemical vapor deposition process that provides uniform coating over the entire surface of the sphere. The company’s multilayer coating capability provides dual- and broadband coatings (1310/1550-nm dual band). The dual-band coatings allow one lens to be used for either wavelength. A choice of lens materials, with indices from 1.44 to 2.15 at 1550 nm, minimizes cost and provides freedom in the optical design. Featuring hard, scratch-resistant coatings, the lenses offer a mechanically simple optical solution for coupling and collimating applications. They also are used in fiber-to-fiber, diode-to-fiber and fiber-to-detector coupling when access to the beam is required.