Calcium Fluoride Windows
Calcium Fluoride windows and lenses for UV and IR spectrum. Elyonoptic can customize CaF2 windows, CaF2 lenses, and wedge angle plates according to customer requirements, as well as CaF2 windows with diameters up to 200 millimeters.
Description
Calcium fluoride is often used in spectroscopic windows and lenses due to its high transmission from 250nm to 7μm. Its low absorption and high damage threshold make it a popular choice for excimer laser optics. Calcium fluoride’s low index or refraction allows it to be used without an anti-reflective coating. The Knoop hardness of calcium fluoride is 158.3. Calcium Fluoride (CaF2) Windows manufactured from vacuum UV grade calcium fluoride are commonly found in cryogenically cooled thermal imaging systems.
Specifications:
| Material: | Calcium Fluoride single crystal（UV or IR） |
| Diameter Tolerance: | +0.0/-0.1mm |
| Thickness Tolerance: | ±0.1mm |
| Clear Aperture: | >85% |
| Parallelism: | 3 arc minute |
| Surface Quality: | 60-40 |
| Wavefront Distortion: | 25mm@633mm |
| Bevel Protective: | <0.25mm X 45° |
| Coating: | Optional |
Standard calcium fluoride circular window:
| Module | Diameter | Thickness |
|---|---|---|
| E-WGP0040005CaF2 | ∅4mm | 0.5mm |
| E-WGP0060010-CaF2 | ∅6mm | 1mm |
| E-WGP0100005-CaF2 | ∅10mm | 0.5mm |
| E-WGP0127010-CaF2 | ∅12.7mm | 1mm |
| E-WGP0150010-CaF2 | ∅15mm | 1mm |
| E-WGP0180010-CaF2 | ∅18mm | 1mm |
| E-WGP020020-CaF2 | ∅20mm | 2mm |
| E-WGP0250010-CaF2 | ∅25mm | 1mm |
| E-WGP0254010-CaF2 | ∅25.4mm | 1mm |
| E-WGP0254020-CaF2 | ∅25.4mm | 2mm |
| E-WGP0254030-CaF2 | ∅25.4mm | 3mm |
| E-WGP0300020-CaF2 | ∅30mm | 2mm |
| E-WGP0300030-CaF2 | ∅30mm | 3mm |
| E-WGP0381030-CaF2 | ∅38.1mm | 3mm |
Calcium Fluoride (CaF2) Window Precautions:
- Please specify IR or UV when ordering.
- Custom calcium fluoride windows can be provided in any size. In addition to circular shapes, square or other polygonal forms are also available.
- Chamfers of any size and angle can be produced according to drawing requirements.
- Custom coatings are available.
FAQs
1. What is your MOQ for Calcium Fluoride Windows?
Our standard MOQ is 50 pieces for regular production.
For small orders (≤50 pcs), we can still accept production and provide full inspection reports and measurement data for each piece upon request.
2. Do you support small batch or prototype orders?
Yes. We support small batch and prototype production for testing and evaluation before mass production.
3. What is your production lead time?
- Standard polished fused silica windows: 4–5 weeks
- Coated optical windows (AR / HR): 5–6 weeks, depending on coating type and specifications
4. Do you provide inspection reports?
Yes. We provide quality inspection reports based on order quantity:
- ≤50 pcs: Full inspection data for each piece available
- 100–1,000 pcs: 5%–10% random sampling inspection reports
- >1,000 pcs: 0.5% sampling inspection reports
All inspection data includes dimensional and surface quality parameters.
5. What coating options are available?
We offer:
- Anti-Reflection (AR) coatings
- High-Reflection (HR) coatings
- Broadband coatings
- Custom wavelength coatings (UV / Visible / IR)
6. Can you manufacture custom sizes and shapes?
Yes. We support OEM manufacturing according to drawings.
Available shapes include:
- Round
- Square
- Rectangular
- Stepped
- Wedged
- Drilled / special structures
7. What quality certifications do you have?
We are certified under international quality management systems, including:
- ISO 9001 Quality Management System
- IATF 16949 Automotive Quality System
- Good Standardization Practices Certification
We also apply strict internal quality control processes, including dimensional inspection, surface quality testing, and coating performance verification before shipment.
