Frequently Asked Questions

The Sapphire Lens SL15-3PE is made from optical grade single Sapphire crystal.

The Sapphire Lens SL15-3PE has a diameter of 15.0mm and a thickness of 3.0mm, with a tolerance of ±0.1mm.

The AR coating on the Sapphire Lens provides a transmission greater than 90% in the range of 610 to 1200nm.

The surface quality of the Sapphire Lens SL15-3PE is specified as 60/40 S/D.

Sapphire Lenses have excellent transmission bandwidths between the UV and IR at 0.15-5.5µm, are extremely hard and resistant to strong acids, highly resistant to scratching and abrasion, and have an extremely high melting temperature of 2030°C. They are suitable for extreme conditions such as high-pressure, vacuum, and corrosive atmospheres.

Custom specifications for Sapphire Lenses include diameters from 2.0 mm to 200mm, various radii of curvature (concave, convex, meniscus), surface qualities of 40/20 or 20/10, fine ground edges, tolerance of ±0.1mm, centration of 3 arc minutes, and a clear aperture of greater than 90%.

Sapphire Lenses have a hardness of 9 on the Mohs scale of mineral hardness.

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