Calcium Fluoride (CaF₂) is an optical crystal material with a broad spectral transmission range of 180 nm–8.0 μm. It features a high laser damage threshold, low fluorescence and high optical uniformity, making it a standard substrate for lenses, optical windows and other components, especially for laser collimation systems. Given its relatively low hardness, the surface is susceptible to scratches and requires careful handling.
Material | CaF2 |
Tolerance | +/-0.01mm/+/-0.1mm |
Flatness | λ/10~1λ |
Parallelism or Centration | < 30 arc seconds |
Focal Length | +/-1% |
Surface Quality | 40/20 |
Clear Aperture | >90% |
Bevel | Protective bevel |
Coating | According to customer's request |
Leveraging its broad spectral transmission from 180 nm deep UV to 8.0 μm mid-infrared, high laser damage threshold, low intrinsic fluorescence and excellent optical uniformity, calcium fluoride is a versatile crystalline material for high-precision optical components across industrial and scientific fields.
Calcium fluoride is a preferred substrate for infrared-grade lenses, prisms and optical windows, delivering stable transmittance and low absorption across the mid-infrared band. It is widely integrated into:
Infrared thermal imagers and night vision devices
Infrared temperature sensors and gas detection systems
Fourier transform infrared (FTIR) spectrometers
With its high damage threshold and exceptional optical homogeneity, CaF₂ is critical for high-precision laser and semiconductor manufacturing scenarios:
High-power laser collimation and focusing lenses, maintaining reliable beam performance under continuous high-energy operation.
Large-format lenses and windows for deep ultraviolet (DUV) laser lithography equipment, satisfying the ultra-tight precision requirements of semiconductor wafer processing.
Its high deep-UV transmittance and low native fluorescence make calcium fluoride uniquely suited for applications where background noise must be minimized:
Ultraviolet spectrometers and analytical optical instruments
High-energy particle detectors and space-borne UV observation systems
High-sensitivity fluorescence detection and measurement devices
Outstanding batch-to-batch uniformity and wide-band optical performance also make CaF₂ a staple in high-end scientific and industrial optical systems:
Astronomical observation telescopes and aerial survey optical payloads
High-resolution reconnaissance and imaging devices
Precision filter substrates and optical metrology components
We provide fully customized calcium fluoride optical components engineered to your exact application specifications. Our fabrication capabilities include:
CaF₂ lenses (plano-convex, plano-concave, biconvex, biconcave, aspheric options)
CaF₂ prisms (right angle, Dove, penta, beam splitter and custom geometries)
CaF₂ optical windows (round, rectangular, custom dimensions and edge treatments)
All components can be manufactured strictly to your drawings, with application-specific anti-reflection coatings and precision tolerance controls available to match your system performance targets.
Phone: +86 189 4674 7897
E-mail: info@aosoptics.com
Whatsapp:8618946747897
Add: Yiju Road High-Tech Zone, Changchun City, Jilin Province, China
