产品: Infrared Windows

Infrared Windows

Infrared windows are specialized optical components designed to transmit infrared radiation while providing environmental protection and optical isolation. Engineered with IR-transparent materials and optimized coatings, these windows deliver exceptional transmission across NIR, SWIR, MWIR, and LWIR spectral ranges. Essential for thermal imaging, gas analysis, spectroscopy, and defense applications where infrared clarity is mission-critical.

Technical Specifications

Specification	Range	Customization
Material	Germanium, ZnSe, CaF₂, Sapphire, Silicon	Application & wavelength-specific
Diameter/Size	5mm – 500mm	Custom shapes & dimensions
Thickness	0.5mm – 25mm	Optimized for your system
Transmission	>95% (material dependent)	Wavelength-optimized
Surface Quality	40-20 to 10-5 scratch-dig	Precision grades available
AR Coating	Broadband or narrowband IR	BBAR options available
Temperature Range	-50°C to +300°C	Material dependent

Product Features

Maximum IR Transmission

Our infrared windows achieve >95% transmission across target wavelengths through precision polishing and advanced AR coatings. Germanium windows reach 45% uncoated, >99% with AR coating in 8-12μm range.

Material-Matched Performance

Each substrate is selected for optimal performance in specific IR bands:

- Germanium: 2-16μm (thermal imaging, FLIR)

- ZnSe: 0.6-16μm (CO₂ lasers, multispectral)

- Sapphire: 0.2-5.5μm (harsh environments)

- CaF₂: 0.18-8μm (spectroscopy)

- Silicon: 1.2-7μm (cost-effective NIR)

Environmental Resilience

Designed for extreme conditions: thermal shock resistant, chemically inert coatings, and hermetic sealing options. Suitable for industrial furnaces, cryogenic systems, and outdoor surveillance.

Precision Manufacturing

Tight tolerances ensure system integration: ±0.05mm dimensional accuracy, <3 arcmin parallelism, λ/10 flatness. Each window is metrology-verified before shipment.

Tihot-Optics Full Customization

- Substrate selection: Match your wavelength and environment (Ge, ZnSe, Sapphire, CaF₂, Si, AMTIR)

- Custom geometries: Circular, rectangular, wedged, beveled edges, or complex profiles

- Coating options: Single/dual-side AR, DLC protective coating, ITO conductive coating

Is This Right for Your Application?

Thermal imaging or FLIR systems?
Gas detection or spectroscopy?
CO₂ laser processing equipment?
Defense or surveillance optics?

Our infrared windows are deployed in these demanding applications worldwide.

FAQ

Q: What material should I choose for my infrared application?

A: Material selection depends on your wavelength range:

- 3-5μm (MWIR): Sapphire, CaF₂, or Silicon

- 8-12μm (LWIR): Germanium or ZnSe

- Broadband IR: ZnSe (0.6-16μm coverage)

- High-temperature: Sapphire (up to 1000°C)

Q: Why are some IR windows coated and others uncoated?

A: Uncoated IR materials have 10-40% reflection losses per surface. AR coatings reduce this to <0.5%, dramatically improving transmission. For example, Germanium goes from 47% to >99% transmission with proper AR coating in the 8-12μm range.

Q: Can infrared windows withstand high temperatures?

A: Yes, material dependent:

- Germanium: -50°C to +200°C

- ZnSe: -50°C to +250°C

- Sapphire: -200°C to +1000°C

- CaF₂: -180°C to +800°C

Q: How do I clean infrared windows without damaging them?

A: Use acetone or methanol with lens tissue (never paper). Blow off dust first with dry nitrogen. Avoid water on hygroscopic materials like ZnSe. For Germanium, ultrasonic cleaning is safe. Always handle by edges with powder-free gloves.

Q: Do you provide transmission curves?

A: Yes, every order includes spectral transmission data.

Q: Are your IR windows compatible with vacuum environments?

A: Absolutely. We offer vacuum-compatible coatings and can provide windows with O-ring grooves or flanges for vacuum chamber integration. Outgassing data available for aerospace applications.