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Thermal imaging ge window DLC+AR Coating, Single Crystal Ge Optical Window For LWIR Thermal Imaging

Thermal imaging ge window DLC+AR Coating, Single Crystal Ge Optical Window For LWIR Thermal Imaging
Thermal imaging ge window DLC+AR Coating, Single Crystal Ge Optical Window For LWIR Thermal ImagingThermal imaging ge window DLC+AR Coating, Single Crystal Ge Optical Window For LWIR Thermal ImagingThermal imaging ge window DLC+AR Coating, Single Crystal Ge Optical Window For LWIR Thermal ImagingThermal imaging ge window DLC+AR Coating, Single Crystal Ge Optical Window For LWIR Thermal ImagingThermal imaging ge window DLC+AR Coating, Single Crystal Ge Optical Window For LWIR Thermal ImagingThermal imaging ge window DLC+AR Coating, Single Crystal Ge Optical Window For LWIR Thermal Imaging
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CategoriesZnSe Infrared Lens
BrandFELIX GLASS optical glass Manufacturing base
ModelFG-GE-WIN-DLCAR
MaterialSingle crystal Germanium (Ge)
Working Spectrum8–14μm long-wave infrared LWIR
Surface CoatingDouble-sided DLC+AR dual composite coating
Optical Feature100% opaque to visible light, block stray light
Core Application FieldThermal imaging, industrial IR temperature measurement, security surveillance
FOB portSHENGZHEN SHANGHAI GUANGZHOU
Terms of PaymentL/C, D/A, D/P, Western Union
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Detail Information

Single Crystal Germanium IR Optical Window With DLC+AR Dual Coating For Thermal Imaging

 
Felix Glass germanium IR window is processed from high-purity single crystal germanium, the core optical substrate dedicated to 8–14μm long-wave infrared thermal imaging equipment. Germanium material features extremely low absorption coefficient in the LWIR band, and fully blocks visible light to eliminate stray light interference, ensuring pure thermal imaging picture without light noise.
 
Dual composite DLC+AR coating is deposited on both surfaces of the window. The broadband AR anti-reflection film optimizes transmittance for 8–14μm thermal infrared to maximize infrared signal throughput; the outer DLC diamond-like carbon hard film greatly improves surface hardness, resisting scratches, moisture and oxidation, solving the defect of soft bare germanium substrate that is easy to wear. Ultra-precision double-sided polishing ensures flat optical surface without beam distortion, stable long-distance thermal detection accuracy.
 

Core Optical Specifications

 
- Raw Material: High-purity single crystal Germanium (Ge)
- Main Working Spectrum: 8 μm – 14 μm long-wave infrared (LWIR)
- Coating Structure: Double-sided AR anti-reflection coating + DLC hard protective coating
- Average Transmittance: >90% within 8–14μm after DLC+AR coating
- Single-Surface Reflectance: <1.3% at target thermal infrared band
- Visible Light Shielding: 100% opaque to 0.4–0.7μm visible light, block ambient stray light
- Available Shape: Custom round, square, rectangular flat window
- Thickness Range: 1mm ~ 12mm customizable
- Surface Quality: Standard 60-40 scratch-dig, upgradeable to high precision 40-20
- Stable Operating Temperature: -40℃ ~ +120℃
All listed specs can be customized to match your thermal imaging equipment parameters
 

Core Product Advantages

 
1. Single crystal germanium substrate with ultra-low LWIR absorption, excellent infrared light throughput for thermal imaging sensors
2. Dual DLC+AR composite coating, integrates high infrared transmittance and hard scratch/moisture protection, extend service life in harsh industrial environments
3. Natural visible light isolation characteristic, completely filter ambient visible stray light, improve thermal imaging contrast and clarity
4. Ultra-flat polished surface, no optical distortion, stable detection precision for long-distance industrial temperature measurement
5. Fully customizable outline, thickness and coating spectrum, match handheld thermal imager, vehicle night vision and online thermal monitoring equipment
6. Stable thermal expansion coefficient, no surface deformation under continuous high-temperature industrial detection load
 

Typical Application Scenarios

 
- Vehicle-mounted LWIR night vision thermal imaging cameras
- Industrial online high-temperature infrared temperature measurement equipment
- Security perimeter thermal detection surveillance cameras
- Handheld portable infrared thermal imagers & thermal monoculars
- Laboratory 8–14μm Fourier transform infrared spectrometers
- Metallurgy, mining high-temperature infrared monitoring optical windows
 

OEM Manufacturing Capability

 
We provide full one-stop germanium optical processing including single crystal blank cutting, ultra-precision double-sided polishing, DLC+AR composite coating deposition, edge deburring, strict 8–14μm spectral transmittance testing and surface hardness inspection.
Prototype sampling, small-batch trial production and mass manufacturing are supported. Every DLC+AR coated germanium window is fully tested to meet customer-specified spectral, dimensional and coating hardness requirements before delivery.
 

 FAQ

 
1. What are the functions of DLC and AR coating on germanium window respectively?
AR coating reduces surface reflection loss to raise 8–14μm infrared transmittance; DLC diamond-like carbon hard film increases surface hardness, protecting soft germanium substrate from scratch, water vapor and oxidation damage.
2. Why choose germanium instead of ZnSe for single-band thermal imaging?
Germanium fully blocks visible light to eliminate stray light interference, perfectly fit single-spectrum LWIR thermal imaging systems; ZnSe transmits visible light, only suitable for multi-spectrum dual-band optical systems with visible auxiliary alignment.
3. Can I customize the size and coating parameters of this germanium window?
Yes, we support custom round/rectangular outline, thickness, and DLC+AR coating optimized for 8–14μm thermal imaging wavelength range.
4. What thermal imaging equipment is this Ge window applicable to?
It matches vehicle night vision thermal cameras, industrial online temperature measuring equipment, handheld thermal imagers and laboratory LWIR infrared spectrometers.
5. Do you provide sample and mass production for germanium infrared optics?
We supply prototype sampling, small trial batches and large-scale manufacturing, all germanium windows pass full spectral transmittance and surface hardness inspection before shipment.

Related Products: 

Plano Convex Spherical Lens, 

AR Coated Optical Window, 

Laser Line Filter,

 Custom Optical Prism

Optical Domes

Infrared Optical Components


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Custom Precision Optical & Glass Components Manufacturer – Felix Glass Co., Limited.

We supply Industrial Glass, Sapphire Optics, Optical Lenses/Prisms/Filters, Infrared IR Optics, Functional & Display Glass, N-BK7/H-K9L Optical Glass, supporting OEM mass production and laboratory custom prototypes. Flexible MOQ & free sample service available. Fill in the form to download full datasheets and get factory wholesale price within 24 hours.

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What is the minimum order quantity for custom precision optical glass components?

FELIX OPTICAL GLASS offers highly flexible MOQs to support customer projects, including prototype testing, small-batch trial orders, and high-volume production. All products can be fully customized to your drawings, tolerances, and application standards. Please send us your specifications, and we will reply within 1-5 hours and provide an accurate quotation after careful evaluation within 1-2 days.

Can I get free glass samples for testing before bulk order?

Yes, our FELIX GLASS factory supports sample testing for a wide range of precision optical glass components and assemblies. The lead time for sample production is 3 to 7 working days. Please contact us today to arrange samples and obtain a customized solution that meets your needs.

What is the production lead time for custom optical glass components?

A: The production cycle for standard samples is 3-10 working days, while mass production requires 15-35 working days, depending on the complexity of the product and the order quantity. We provide reliable precision optical glass components and fast delivery services for orders from industries such as defense, industrial equipment, medical devices, shipbuilding, robotics, automotive, and aerospace. Please submit your project details so we can provide you with an accurate delivery schedule.

Are your optical glass products ISO, CE and RoHS certified?

All precision optical glass components from FELIX OPTICAL GLASS comply with ISO quality system standards as well as CE and RoHS requirements. We provide comprehensive test reports, spectral graphs, material certificates, and inspection documents for customer review. Please feel free to request complete certification details and a formal quotation at any time.

Do you offer one-stop custom optical glass processing services?

Yes. We offer a full range of precision optical glass component processing services, including CNC machining, precision grinding, optical polishing, chemical/physical tempering, vacuum coating (AR anti-reflective coating, AF anti-fingerprint coating, AG anti-glare coating, IR infrared coating), and screen printing. From raw materials to finished products, every step is completed in our own factory. Please tell us your needs, and we will provide you with the most cost-effective solution.

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We will respond promptly within 1 to 5 hours and provide an optimal, formal quotation within 1 to 2 days. Partnering with us is the smartest choice—start a mutually beneficial partnership today!
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With 19 years of experience as a precision optical glass expert, we provide comprehensive and satisfactory customized solutions.

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