Sapphire Lenses
Meller Optics’ optical-grade monocrystalline sapphire lenses are ideal for imaging and focusing, IR laser beamsteering and chemical and erosion-resistant applications. They feature diameter tolerances of +/- 0.25 mm and thickness tolerances of +/- 0.20 mm.
Available in positive and negative configurations, the lenses can be manufactured to custom diameter and focal length requirements, and can be provided with anti-reflection and other thin film coatings.
| Orientation | C-axis perpendicular to the faces |
| Diameter Tolerance | +/- 0.25 mm |
| Thickness Tolerance | +/- 0.20 mm |
| Focal Length Tolerance | +/- 5% at .6328µm |
| Clear Aperture | Central 80% of the diameter |
| Centering Error | 3 arcmin maximum |
| Surface Quality | 60-40 scratch-dig per MIL-O-13830A |
