MWIR Optical Windows | Infrared Sensor Protection | Silicon Optics Felix Glass supplies custom single‑crystal silicon IR windows for MWIR thermal imaging, optical sensors, high‑temperature and airborne EO/IR systems with precision polishing and coating services. Single Crystal Silicon Window | MWIR Optics | IR Sensor Protection Single crystal silicon features excellent transmission from 1.2μm‑7μm, widely used in MWIR band. It has high thermal conductivity, good mechanical strength and stable performance at elevated temperature. Material substrate does not equal final performance grade. Please advise your working wavelength, operating temperature and coating requirements to avoid improper selection. Interferometer Inspection Precision Polishing Finished Component Detail All silicon windows go through interferometer and spectral performance inspection before delivery. MWIR AR coating reduces surface reflection and improves infrared transmission. DLC coating delivers scratch resistance and environmental protection for rugged outdoor or airborne use. Combined AR+DLC coating is available for harsh environments. Learn more about infrared optical coating technology. To generate an accurate quotation within 24 hours, please prepare below information: We need engineering drawing, working wavelength, max operating temperature, coating requirement and order quantity. Check full RFQ guide Silicon is not suitable for standard 8‑14μm LWIR. Choose ZnS, ZnSe or Germanium for LWIR applications. No strict fixed MOQ. We support prototype, small‑batch and large‑volume manufacturing.
Custom Silicon IR Window Manufacturer
OEM Manufacturing | AR / DLC Coating | Custom SpecificationsMaterial & Grade Overview
Key Specifications & Custom Options
Substrate Material
Single Crystal Silicon
Shape
Flat window, disc, square, rectangular, stepped, custom profile
Size Range
Dia 5mm‑250mm, custom thickness & edge geometry
Surface Quality
20‑10 /40‑20 scratch‑dig, customized per customer drawing
Working Wavelength Band
1.2μm‑7μm, primary MWIR application
Coating Options
Uncoated, MWIR AR coating, DLC hard coating, combined AR+DLC
Custom Machining
Edge chamfer, counterbore, O‑ring groove, precision step machining
Inspection
Spectrophotometer, interferometer, visual defect inspection, material certificate available
Manufacturing & Inspection Evidence
Typical Application
Coating Selection Guide
Order & Quotation Requirements (Valid RFQ Checklist)
Send Drawing For Quote
FAQ Snippets
What data do you need for silicon IR window quotation?
Can silicon IR window work for LWIR 8‑14μm?
Is there fixed MOQ for single crystal silicon windows?
Related Products
- 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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With 19 years of experience as a precision optical glass expert, we provide comprehensive and satisfactory customized solutions.
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