Silicon Windows | Custom Infrared Optics from Bote Optics Singapore
Looking for high-performance silicon windows for your infrared system?
Bote Optics, based in Singapore, manufactures precision silicon optical windows for IR imaging, thermal cameras, laser systems, and more. We offer custom sizes, coatings, and fast delivery worldwide.
🟥 What is a Silicon Window?
A silicon window is an optical window made from monocrystalline silicon (Si), widely used in infrared (IR) applications due to its high transmission in the 1.2–7 μm range. Silicon windows are lightweight, durable, and cost-effective, making them ideal for thermal imaging systems, gas sensors, and laser optics.
✅ Key Features of Bote Silicon Windows
| Feature | Details |
|---|---|
| Material | Monocrystalline silicon (optical grade) |
| Transmission Range | 1.2 μm – 7 μm |
| Refractive Index | ~3.4 at 5 μm |
| Density | 2.33 g/cm³ (lighter than Ge) |
| Hardness | 1150 Knoop (moderately hard) |
| Thermal Conductivity | Excellent (better than Ge) |
| Resistivity | High-purity, low-loss for IR applications |
| Coatings Available | AR, BBAR, DLC, custom IR coatings |
🛠️ Custom Silicon Windows – Made to Your Specs
At Bote Optics, we specialize in custom infrared windows for industrial, defense, and scientific use.
We can manufacture according to your drawing, system requirements, or application specs.
| Parameter | Options |
|---|---|
| Diameter | 5 mm to 200 mm |
| Thickness | 0.5 mm to 20 mm |
| Shape | Round, square, rectangular, elliptical |
| Surface Quality | 40-20, 20-10, or custom scratch-dig |
| Flatness | λ/2 standard, λ/10 available |
| Coating Options | AR, DLC, BBAR, one or both sides |
| Mounting | Bare, metal holder, or bonded upon request |
📦 We support OEM production, R&D projects, and bulk orders with stable quality and fast response.
🌐 Silicon Windows from Singapore
As a Singapore-based optical manufacturer, we serve both local and international markets with:
- High-quality custom optics
- Fast turnaround and global shipping
- Local support for ASEAN and APAC customers
- Transparent communication and technical guidance
Need a trusted infrared optics supplier in Singapore?
Bote Optics is ready to help.
🌈 Optical Transmission of Silicon Windows
✔️ IR Transmission
Silicon offers excellent infrared transmission between 1.2 μm and 7 μm, ideal for:
- Thermal imaging cameras
- Night vision and surveillance optics
- Gas analysis systems
- IR laser protection windows
Note: Silicon is opaque in the visible range (400–1000 nm), making it unsuitable for VIS systems.
🔍 AR-Coated Silicon Windows
We offer a range of anti-reflective (AR) coatings for silicon windows to reduce surface reflection and improve system efficiency.
| Coating Type | Wavelength Range | Typical Transmission |
|---|---|---|
| Standard IR AR | 3–5 μm | >95% |
| Extended IR AR | 3–12 μm | >90% |
| DLC Coating | For high durability | Available on request |
| BBAR Coating | Custom wideband IR | Customizable |
We also provide uncoated silicon windows for laser protection or reflection-based systems.
🧪 Material Specifications
| Property | Value |
|---|---|
| Crystal Type | Czochralski-grown, undoped |
| Density | 2.33 g/cm³ |
| Young’s Modulus | 130–185 GPa |
| Thermal Expansion | 2.6 × 10⁻⁶ /°C |
| Thermal Conductivity | 149 W/m·K |
| Dielectric Constant | ~11.7 |
These properties make silicon suitable for both optical and mechanical applications under thermal stress.
🧼 Cleaning & Handling Silicon Windows
To maintain performance and avoid damage:
- Handle by the edges using gloves or tweezers.
- Clean with pure isopropyl alcohol or acetone.
- Avoid touching coated surfaces directly.
- Store in dry, dust-free packaging.
Silicon windows are moderately hard but can chip at the edges if dropped.
🌟 What Customers Say
“Bote’s silicon windows gave us consistent IR performance. The delivery was fast and smooth.”
— IR Systems Engineer, Malaysia
“Excellent custom work. The AR coating on our 3–5 μm windows works perfectly with our thermal sensors.”
— Defense Optics Buyer, Singapore
📦 Export & HS Code Information
For global shipping and customs clearance:
- HS Code: 90019090
Optical elements of any material, unmounted.
We provide:
📄 Commercial invoice
📄 Certificate of origin
📄 Inspection reports (on request)
📞 Contact Us for a Fast Quote
Let us know your specs – we’ll get back to you within 24 hours.
📍 Bote Optics Pte. Ltd. – Singapore
🌐 www.bote.com.sg
📧 Email: [email protected]
📞 Phone: +65-8700-3511
🚚 Global delivery available
❓ FAQ – Silicon Windows
Q: Can I get a silicon window with DLC coating?
A: Yes, we offer DLC and hard coatings for high-durability environments.
Q: Are your silicon windows laser-compatible?
A: Yes. Let us know your laser wavelength and power so we can optimize material and coatings.
Q: Do you accept custom drawings?
A: Absolutely. Just send us your PDF or STEP file, and we’ll take care of the rest.
Q: What is your typical lead time?
A: Stock items ship in 3–5 days. Custom orders: 2–3 weeks.
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👇 Start Your Custom Optics Project Today
Contact Bote Optics – your trusted partner in infrared window manufacturing.