Zinc Sulphide (Multispectral)
Optical grade ZnS transmitting from visible to long-wave IR
Multispectral IR Material
Multispectral Zinc Sulphide is an advanced form of ZnS processed to provide transmission from the visible through to the long-wave infrared. It is widely used in multispectral imaging windows and domes, particularly in defence and aerospace systems where a single window material must operate across multiple wavebands.
Is this material right for your application?
Use When:
Avoid When:
Consider Alternatives:
Transmission from visible through LWIR is required
Multispectral or dual-band imaging systems are used
A single window material must serve multiple sensors
Defence or aerospace imaging systems are involved
Optical performance must be maintained across wavebands
Cost-sensitive applications dominate design constraints
Single-band IR performance is sufficient
Manufacturing complexity must be minimised
ZnSe – lower cost for mid-IR-only systems
Germanium (Ge) – compact LWIR designs
Sapphire – extreme durability where multispectral performance is unnecessary
Key Properties
Optical
Transmission from visible to long-wave IR
High optical clarity across multiple bands
Mechanical
High density and strength
Environmental
Suitable for harsh multispectral imaging environments
Explore Related Optical Materials
Frequently asked questions about Barium Fluoride specifications and use-cases
FAQ
Q1. What wavelength range does multispectral ZnS cover?
Visible through mid-infrared.
Q2. Is multispectral ZnS durable?
Yes. More durable than standard ZnS.
Q3. Where is it commonly used?
Harsh-environment IR windows.
Q4. What are alternatives to multispectral ZnS?
ZnSe and Sapphire.
Used in defence and aerospace
Higher cost than regular ZnS
Excellent environmental resistance