Broadband performance
Designed around the wavelength band, thickness and clear aperture your instrument actually uses.
OPTICAL MATERIALS / CAF₂
Calcium fluoride windows for cleaner UV–IR paths.
Low-absorption CaF₂ optical windows, finished to your drawing for spectroscopy, laser protection, semiconductor inspection and precision imaging.
0.13–10 μmtypical transmission band
±0.005 mmthickness tolerance target*
24 hengineering response goal
*Typical or target values; final performance is confirmed against the approved drawing and inspection plan.
01Precision windows
for demanding paths
for demanding paths
01Broad spectral utility
One material platform across UV, visible and IR architectures.
02Drawing-led production
Geometry, edge finish and coating aligned before release.
03Export-ready support
Clear communication from optical review to repeat supply.
WHY CAF₂
When the optical path has to stay quiet.
Calcium fluoride combines broad transmission with low absorption and a low refractive index, making it a practical choice when stray loss and spectral coverage matter more than decorative complexity.
CaF₂ crystal components / custom geometryStable, low-scatter surfaces
Polishing and inspection options help protect throughput in analytical and imaging systems.
From prototype to repeat lot
One engineering conversation covers material, tolerances, coating, packing and inspection records.
APPLICATIONS
Built around the beam, not the brochure.
Use CaF₂ windows where clean transmission, environmental protection and compact integration are all part of the brief.
UV spectroscopy
Window protection and sample interfaces for spectrometers, fluorescence systems and analytical instruments.
Plan a window ↗Laser systems
Input/output windows and protective covers for UV, excimer and IR laser assemblies.
Share wavelength ↗Semiconductor inspection
Optical paths for wafer inspection, metrology and process monitoring where contamination control matters.
Review tolerances ↗Thermal imaging
IR-compatible windows for sensors, camera housings and compact thermal instruments.
Discuss coating ↗TECHNICAL SNAPSHOT
Specification before quotation.
Values below are typical reference points for engineering discussion. We confirm the final window against your drawing, wavelength and inspection criteria.
| Material | Calcium fluoride (CaF₂), optical grade |
|---|---|
| Transmission | Approx. 0.13–10 μm, application dependent |
| Refractive index | Approx. 1.43 at 589 nm |
| Density | Approx. 3.18 g/cm³ |
| Geometry | Round, square, rectangular and custom shapes |
| Size range | Typical 2–100 mm; larger sizes by review |
| Thickness | Typical 0.5–20 mm; thin windows by process review |
| Flatness | Up to λ/10 @ 632.8 nm, by drawing |
| Parallelism | Typical ≤ 1 arc min, by drawing |
| Surface quality | Typical 40/20; tighter grades available |
| Coating | Uncoated or AR coating, band specified by customer |
QUOTE INPUT
Send four details.
Wavelength · clear aperture · thickness · quantity
Start a technical review ↗HOW WE WORK
Less back-and-forth. More usable parts.
01
Align the use case
Wavelength, incidence angle, environment and clear aperture.
02
Lock the drawing
Geometry, edge treatment, surface quality and coating notes.
03
Inspect the lot
Dimensional and cosmetic checks matched to the agreed plan.
04
Repeat with confidence
Packaging and records prepared for your next release.
FAQ
Clear answers for your next build.
Still deciding between CaF₂, fused silica or sapphire? Share the wavelength and environment; our engineers can help you narrow the material choice.
What is a CaF₂ optical window?+
A polished calcium fluoride element that protects an optical path while passing UV, visible or infrared radiation.
What wavelength range can CaF₂ cover?+
Typical use spans roughly 0.13–10 μm, depending on grade, thickness, surface finish and environment.
Can you manufacture to a drawing?+
Yes. Round, square, rectangular and special-shaped windows can be reviewed against your drawing.
Is CaF₂ suitable for laser systems?+
It is commonly selected for UV and IR laser optics because of broad transmission and low absorption. Confirm wavelength and power for final selection.
What surface quality is available?+
40/20 is a typical starting point; tighter cosmetic grades can be discussed for critical assemblies.
Do you offer AR coatings?+
Yes. Specify the operating band, angle of incidence and environmental requirements for coating review.
What is the maximum window size?+
Maximum size depends on thickness, geometry, flatness and edge treatment. Send the clear aperture for review.
How should CaF₂ windows be handled?+
Use clean gloves and soft lens tissue, keep parts dry, and avoid impact or abrasive dust during assembly.
Can you supply prototypes and production lots?+
Yes. Prototype, pilot and repeat production quantities can be quoted from the same approved drawing.
What documentation can accompany an order?+
Inspection records can be aligned to dimensional, flatness, parallelism, surface quality and coating requirements.
How do I request a quotation?+
Send the drawing, wavelength, aperture, quantity and destination through the form, email or WhatsApp.
ENGINEERING CONTACT
Have a window in mind?
Tell us what the beam sees. We will come back with a practical material and manufacturing route.
Mail[email protected]WhatsApp+86 132 6287 9223
StudioWanda Mao, No. 1079 Dianshanhu Avenue, Qingpu, Shanghai