Germanium domes are hemispheric windows which provide a protective boundary while allowing a clear field of view between two environments. They are typically made of two parallel surfaces. Shanghai Optics manufactures optical germanium domes in a wide variety of substrates, suitable for visible, IR, or UV light. Our germanium domes are available in sizes from 5 mm to over 200 mm diameter, with custom sizes possible on request.
BK7 or fused silica is a good choice for an optical dome that will be used in situations where only visible light must be transmitted; for instance, on camera sensor or for meteorology applications. BK7 has good chemical durability, and provides excellent transmission for the 300nmto 2µm wavelength range.
For UV- range light transmission, UV-grade fused silica is available. Our fused silica domes can withstand high pressure and are ideal for underwater application. This optical glass provides over 85 percent transmission for wavelengths up to 185 nm.
We can also manufacture acrylic domes on request. These germanium domes offer less light scattering than BK7 or fused silica, and are still highly durable.