Standard FLIR Grade CVD ZnS Dome | Cost-Effective LWIR Optics

Standard FLIR Grade CVD ZnS – Cost-Effective LWIR Thermal Imaging Optics

Standard FLIR grade CVD ZnS (regular grade zinc sulfide) is the industry baseline material for 8–12μm long-wave infrared thermal imaging front optics. Produced via pure CVD deposition without HIP post-processing, this yellow-tinted polycrystalline ZnS delivers high mechanical toughness, excellent outdoor moisture stability, and flat LWIR transmission for FLIR thermal cameras, UAV turrets, vehicle-mounted gimbals and industrial thermography sensors. We manufacture FLIR ZnS hemispherical domes, flat windows and plano-convex lenses with tight dimensional tolerances and optional LWIR anti-reflection coatings.

Key Advantages of FLIR Grade CVD ZnS

• Raw CVD polycrystalline zinc sulfide, no extra HIP processing cost
• Primary transmission window: 7–13μm LWIR thermal imaging band
• Yellow-orange natural tint, optimized exclusively for long-wave IR
• High mechanical strength for gimbal vibration & harsh outdoor deployment
• Strict batch separation from multispectral HIP ZnS to avoid material mixing
• Cost-effective baseline choice for pure thermal imaging projects

Optical Performance & Machining Tolerances

Common Application Scenarios

• Uncooled LWIR thermal camera front protective domes & windows
• UAV drone EO/IR sensor turret outer optical housing
• Vehicle-mounted thermal surveillance gimbal optics
• Industrial predictive maintenance thermal imager protective windows
• Border security outdoor thermal imaging sensor domes

FLIR Grade vs Multispectral HIP ZnS

Standard FLIR grade ZnS is yellow-tinted and optimized exclusively for 8–14μm LWIR thermal imaging at a lower cost point. If your system requires visible-light + infrared dual-band transmission, upgrade to our clear multispectral HIP ZnS dome product instead.