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Calcium Fluoride (CaF₂) is commonly used for optics looking at the IR and UV spectrums and has a very low change in refractive index with wavelength. It shares similar optical properties with Barium Fluoride although it has a transmission that is 2.5µm less into the infra-red. Calcium Fluoride is however cheaper than Barium Fluoride as the optical grade occurs naturally as opposed to BaF2 being man made.

Knight Optical supply a range of quality CaF₂ prisms either from stock or bespoke custom made to your specification for a range of applications. Every component is individually tested by our highly skilled technicians in our state of the art metrology lab to ensure all components meet our high quality standards. Stock windows are available in 45° right angled types and 60° equilateral types in 15mm to 30mm length.

Contact our multilingual technical sales team and discover how Knight Optical’s high quality Calcium Fluoride prisms and service can improve your instrumentation and supply chain experience.

Dimensions (A,B,C):
Angular Tol.
Clear Aperture:
Surface Quality:
Calcium Fluoride
± 0.1mm
± 6 arcmin
< 1/2 wave @ 4 micron
40/20 scratch/dig

Mounting into cells.
Edging down to smaller sizes.

7 Items

Name Type Material Dimension A (mm) Dimension B (mm) Dimension C (mm) Angle (degrees) Thickness (mm) Coating Price Buy
PCF3031 Equilateral Calcium Fluoride 30 30 30 60 30 Uncoated
PCF3030 Right Angle Calcium Fluoride 30 30 42.42 45 30 Uncoated
PCF2527 Equilateral Calcium Fluoride 25 25 25 60 25 Uncoated
PCF2526 Right Angle Calcium Fluoride (UV Grade) 25 25 35.4 45 25 Uncoated
PCF2525 Right Angle Calcium Fluoride 25 25 35.4 45 25 Uncoated
PCF1516 Equilateral Calcium Fluoride 15 15 15 60 15 Uncoated
PCF1515 Right Angle Calcium Fluoride 15 15 21.2 45 30 Uncoated

7 Items


CaF₂ Prisms

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