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.
     Yutai Optics provides domes from glass, quartz, depending on the temperature, shock and scratch resistance required. These items will be manufactured on customer request only.We recommend thickness at least 4mm for customer as production cost will be better than the thinner ones.

Specifications of Optical Dome Lens

Shape Types	Hemisphere, Dome with Flange, Dome with Hole, Super hemisphere
Material	BK7, Fused Silica, Sapphire, Gemanium,Silicon, CaF2,MgF2,ZnS..
Diameter	10-500mm
Thickness	2-10mm
Height	5-200mm
S/D	80/50, 60/40
Coating	Uncoated/ AR/ BBAR
Application	High-definition outdoor monitoring equipment lens protection, radiation measurement instrument protection, underwater detectors, optical sensors, Security products, head guards, aerospace and other fields

Highly recommended optical dome lens list from Yutai Optics:

Visible BK7 optical dome lens
Ultraviolet Fused Silica optical dome lens
Borosilicate optical dome lens 
Sapphire glass dome lens
Infrared optical dome lens
ZnS optical dome lens
LiF optical dome lens
MgF2 optical dome lens