Domes lense

Optical domes are lenses with two concentric spherical surfaces. Sometimes they are being referred to as bent plan parallel plates. Consequently it is customary to define parallelism between two surfaces as the maximum thickness variation between the two surfaces.

In perfect domes the convex radius is equal to the sum of the dome thickness and concave radius,respectively uncoated or with an antireflection coating.Slight departures from that rule are sometimes desired. These protection covers are high quality optical products which are produced through precision polishing. They ensure clear, distortion free protection for your underwater camera objective or other sensitive equipment.