High Precision Custom ZnS ZnSe IR AR Coated Optical Window 8-14μm for Thermal Imaging
Upgrade your thermal imaging system with our high-precision ZnS (Zinc Sulfide) ZnSe (Zinc Selenide) optical window plates. Specifically engineered for the long-wave infrared (LWIR) band of 8–14 μm, these windows deliver exceptional transmission, low absorption, and durable anti-reflection (AR) coatings - making them the ideal protective and transmitting element for thermal cameras, FLIR systems, industrial inspection equipment, and scientific infrared instruments.
Why Choose Our ZnS / ZnSe Optical Windows?
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Broadband High Transmission in the Critical 8–14 μm Band
Optimized AR coatings on both surfaces significantly reduce reflection losses. Typical average transmission exceeds 90–97% (depending on material and coating design) across the 8–14 μm atmospheric window used by most uncooled thermal imaging detectors. -
Two Premium Materials for Different Needs
- ZnSe (Zinc Selenide): Extremely low absorption, excellent transmission from ~0.6 μm to 16 μm, low chromatic dispersion, and ideal for high-performance thermal imaging and CO₂ laser-related systems.
- ZnS (Zinc Sulfide): Higher hardness, superior fracture strength and chemical resistance compared with ZnSe. Available in standard FLIR-grade (optimized for 7–14 μm) or multispectral grade. Perfect for outdoor, harsh-environment, or protective front windows.
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True Custom Sizing
Diameter / outer dimensions, thickness, shape (round, square, rectangular, or special contours), and tolerances are fully customizable. From small sensor windows to larger protective plates — we manufacture to your exact drawing or specification. -
Durable Broadband AR Coating
Both sides coated with high-performance AR for 8–14 μm (or 7–14 μm / 8–12 μm options). Coatings are designed for high laser damage threshold where applicable and good environmental durability.
Typical Specifications (Customizable)
| Parameter | Typical Value |
| Materials | CVD ZnSe / CVD ZnS (FLIR or Multispectral) |
| Wavelength Range | 8–14 μm (optimized AR) |
| Transmission (AR-coated) | Tavg > 90–97% (material dependent) |
| Diameter / Size | Custom (from a few mm up to 200+ mm) |
| Thickness | Custom (typically 1–10 mm) |
| Surface Quality | 60/40 Scratch-Dig (better available) |
| Parallelism | ≤ 1–3 arcmin |
| Coating | Dual-side AR @ 8–14 μm |
| Clear Aperture | ≥ 90% |
Key Applications
- Thermal imaging cameras and uncooled microbolometer systems
- FLIR / forward-looking infrared systems
- Industrial process monitoring and predictive maintenance
- Security & surveillance thermal cameras
- Scientific infrared spectroscopy and research instruments
- Protective windows for outdoor or harsh-environment IR systems
- UAV / drone-mounted thermal payloads
Quality & Manufacturing
All windows are manufactured from high-purity CVD material, precision polished, thoroughly cleaned, and 100% inspected for surface defects, coating quality, and dimensional accuracy. Fuxin Glass support both prototype quantities and volume production with consistent quality control. simply send your required dimensions, material preference (ZnS or ZnSe), coating band, and any special requirements (wedge angle, special shape, tighter tolerances, etc.). Our engineering team will provide a detailed proposal promptly.
Protect your thermal imaging performance with precision optics designed for the 8–14 μm band.
1. What materials are available for these optical windows?
We offer both ZnSe (Zinc Selenide) and ZnS (Zinc Sulfide). ZnSe provides higher transmission and lower absorption, while ZnS offers better hardness and durability for harsh environments.
2. What is the working wavelength range?
The windows are optimized with AR coating for the 8–14 μm band, ideal for most thermal imaging cameras and LWIR systems.
3. Can I order custom sizes?
Yes. Diameter, thickness, shape (round, square, rectangular, etc.), and tolerances can all be customized according to your drawings or requirements.
4. Do the windows come with AR coating on both sides?
Yes. Both surfaces are coated with broadband anti-reflection coating specifically designed for the 8–14 μm range to maximize transmission.
5. What surface quality and precision can I expect?
Standard surface quality is 60/40 scratch-dig (better options available). Parallelism is typically ≤1–3 arcmin, with high clear aperture (≥90%) and precision polishing.
Company Introduction
Founded in 2012, Fuxin Glass is a leading manufacturer specializing in the research, development, production, and export of cover glass, headquartered in Dongguan, China, near the ports of Shenzhen and Guangzhou.
With 13 years of industry experience, Fuxin serves customers in over 80 countries worldwide. With ISO/RoHS/JIS Z certifications, Fuxin Glass is dedicated to providing high-quality glass solutions for electronic displays and smart devices. Its products are widely used in interactive display, automotive electronics, industrial equipment, medical devices, home appliances, and smart devices. The products feature high light transmittance (over 95%), high hardness (Mohs 6), and excellent scratch and impact resistance. The 21,000-square-meter factory is equipped with four fully automated production lines, with a monthly production capacity of 300,000 pcs. We support small-batch trial production and large-scale delivery, and provide one-step technical support and after-sales service. Multi-dimensional customization is supported as well: including but not limited to mold design (samples can be produced in as fast as 7 days), special optical processing (AR/AF/AG/AM combination), explosion-proof structure design (multi-layer composite structure), color customization (7 colors are optional), silk screen logo, etc., to meet the personalized needs of customers. Our products have successfully entered mainstream markets such as North America, Japan, South Korea, India, and Europe, and widely serve interactive ( such us all in one machine, IFPD, smart white board ), automotive central control screens, industrial HMI, smart home panels and other fields.
We always adhere to the principle of "integrity, quality and win-win" and are willing to establish good long-term cooperative relationships with customers all over the world!
Partial Sample Display
Certification
Factory Overview
Inspection Progress
Package
Delivery & Lead Time
| Original Country | China |
| FOB Port | Shenzhen or Hongkong |
| HS Code | 700719000 |
| Lead Time | Sample within 7 days, bulk order 15~20 days |
| Delivery | By sea / DHL / Fedex / UPS |
Payment Details
1. Soda-lime Glass (Ordinary Flat Glass)
- Composition: Mainly composed of silicon dioxide (SiO₂, approximately 70%), sodium oxide (Na₂O), and calcium oxide (CaO).
- Characteristics: Easy to produce, low cost, but poor thermal stability and brittle.
- Applications: The most common type of glass, used for doors, windows, bottles, jars, and everyday utensils.
2. Borosilicate Glass (Heat-Resistant Glass)
- Composition: Based on soda-lime glass, boron oxide (B₂O₃) is added.
- Characteristics: Low coefficient of thermal expansion, high temperature resistance, resistance to rapid temperature changes (not easily cracked by sudden heating and cooling), good chemical stability.
- Applications: Laboratory instruments (such as beakers and test tubes), heat-resistant tableware (such as baking pans and glass pots), high-end flashlight lenses, etc. Well-known brands include Pyrex.
3. Aluminosilicate Glass
- Composition: Contains a large amount of aluminum oxide (Al₂O₃) and silicon dioxide (SiO₂).
- Characteristics: High hardness, scratch resistance, high mechanical strength, superior performance compared to borosilicate glass.
- Applications: Cover glass for high-end mobile phones/tablets, aviation glass, etc. Well-known brands include Corning Gorilla Glass.
4. Quartz Glass
- Composition: Silicon dioxide (SiO₂) content is above 99%.
- Characteristics: Excellent heat resistance (softening point up to 1700℃), wide light transmission spectrum (from ultraviolet to infrared), high purity, and excellent chemical stability. However, it is expensive.
- Applications: Semiconductor industry, optical devices, observation windows in high-temperature furnaces, ultraviolet lamps, etc.
To get an accurate quotation, please provide (if available):
- Product dimensions & glass thickness
- Application / usage
- Edge grinding type
- Surface treatment (coating - AG/AR/AF/AM or overlay, printing, etc.)
- Packaging requirements
- Quantity or annual usage
- Required delivery time
- Drilling or special hole requirements
- Drawings or photos
If you don't have all the details yet: just provide the information you have. Our team can discuss your requirements and help you determine specifications or suggest suitable options.
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1) Are you a trading company or manufacturer?
1. Leading glass deep processing factory
2. 13 years of experience
3. OEM/ODM expertise -
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2) How to order?
1. Your detailed requirements: drawings/quantity/or your special requirements.
2. Let's get to know each other better: We can provide your requirements.
3. Email us your formal order, payment.
4. We will incorporate the order into our mass production plan and produce according to the approved sample.
5. Packing & shipping -
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3) Do you provide samples for testing?
We can provide free samples, but the shipping cost will be borne by the customer.
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4) What is your minimum order quantity?
A: 200 pieces.
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5) How long does a sample order take? How about a bulk order?
Sample order: Usually within a week.
Bulk order: Usually takes 15~20 days depending on quantity and design. -
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6) What packaging do the products use?
Plastic wrap + pearl cotton + kraft paper + cartoon box + wooden crate.
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7) How do you ship the goods, and how long does it take to arrive?
We usually ship by sea / air freight/ International Express, and the arrival time depends on the distance.
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8) What are your payment terms?
A: T/T 100% in advance, or other payment methods.
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9) Do you provide OEM/ODM services?
Yes, we can customize.
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10) Do your products have certificates?
Yes, we have ISO9001/REACH/RoSH/GS/JIS Z certifications.