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ISP Optics Calcium Fluoride (CaF₂) Windows

See More by ISP Optics

Greater than 90% Transmission from 350nm-7μm
Low Index of Refraction
Low Solubility and Chemically Inert

ISP Optics Calcium Fluoride (CaF₂) Windows provide environmental protection for electronic systems and sensors across the IR spectrum. Calcium Fluoride features greater than 90% transmission from 350nm to 7μm and a low refractive index, allowing it to be used without an anti-reflection (AR) coating. These windows are fabricated with IR Grade Calcium Fluoride, featuring low absorption and a high damage threshold in the infrared spectrum. ISP Optics Calcium Fluoride (CaF₂) Windows offer low solubility and superior hardness compared to other fluoride-based substrates, making them ideal for applications featuring harsh environments including infrared spectroscopy systems and thermal imaging.

Common Specifications

Bevel:

Protective as needed

Clear Aperture (%):

Edges:

Fine Ground

Knoop Hardness (kg/mm²):

158.3

Parallelism (arcmin):

Poisson's Ratio:

0.26

Young's Modulus (GPa):

75.8

Abbe Number (v_d):

94.99

Axis Orientation:

Random

Coating:

Uncoated

Index of Refraction (n_d):

1.434

Substrate:

Calcium Fluoride (CaF₂)

Surface Flatness (P-V):

2λ

Surface Quality:

40-20

Wavelength Range (nm):

300 - 8000

Coefficient of Thermal Expansion CTE (10^-6/°C):

18.85

Density (g/cm³):

3.18

Products

Accessories

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Calcium Fluoride (CaF<sub>2</sub>) Windows

Calcium Fluoride (CaF₂) Windows

ISP Optics Calcium Fluoride (CaF<sub>2</sub>) Wedged Windows

ISP Optics Calcium Fluoride (CaF₂) Wedged Windows

Magnesium Fluoride (MgF<sub>2</sub>) Windows

Magnesium Fluoride (MgF₂) Windows

Calcium Fluoride Optics

Resources

Filter

Anti-Reflection (AR) Coatings

Anti-reflection (AR) coatings are applied to optical components to increase throughput and reduce hazards caused by back-reflections.

View Now

An Introduction to Optical Coatings

Optical coatings are used to influence the transmission, reflection, or polarization properties of an optical component.

View Now

Advantages of using engineered chalcogenide glass for color corrected, passively athermalized LWIR imaging systems

View Now

Infrared Light

Optical Engineer Andrew Fisher explains how you can see the "invisible" light, or infrared light, from your own TV remote.

View Now

Short Wave Infrared (SWIR)

View Now

Beam Displacement Calculator

View Now

Understanding Optical Windows

Determine how to select an optical window based on its material transmission, thermal and mechanical properties, and other specifications at Edmund Optics.

View Now

Optical Windows Review

Optical Windows provide protection between an optical system or sensitive electronics and an outside environment.

View Now

I need a window for imaging underwater. The water is filtered and at room temperature with a very small amount of detergent in it. It is flowing at low speed. Will a MgF2 coated window survive this for a few years?

View Now

Advantages of Using Meniscus Lenses in Infrared Applications

Meniscus lenses offer superior performance compared to plano convex lenses in IR applications. Find out the benefits of using a meniscus lens at Edmund Optics.

View Now

The Correct Material for Infrared (IR) Applications

Using an Infrared Application? Discover the importance of choosing the right material and comparisons of each at Edmund Optics.

View Now

Is it okay to clean an infrared lens, for example one made of germanium, with ethanol?

View Now

Infrared (IR) Spectrum

View Now

UV vs. IR Grade Fused Silica

UV grade fused silica is ideal for UV and visible applications, but IR grade fused silica has better transmission in the IR due to a lack of OH- impurities.

View Now

What is SWIR?

Have a question about short-wave infrared (SWIR)? Find definitions, application uses, and examples at Edmund Optics.

View Now

Hyperspectral and Multispectral Imaging

Are you trying to gauge depth of field in your imaging system? Take a closer look at this article on depth of field calculations at Edmund Optics.

View Now

Hyperspectral & Multispectral Imaging – TRENDING IN OPTICS: EPISODE 7

Hyperspectral and multispectral imaging are imaging technologies that capture information from a broader portion of the electromagnetic spectrum.

View Now

You offer many substrates for UV and IR applications. How do I know which is best for me?

View Now

Optical Glass

Choosing the right optical glass is important. Find out factors and properties on how to select the right optical glass at Edmund Optics.

View Now

Surface Accuracy

View Now

BBAR Coating

View Now

Understanding Surface Quality Specifications

The surface quality of optical components the scattering off of its surface, which is especially important in laser optics applications.

View Now

Removing Protective Plastic Coating

A protective plastic coating protects a variety of our flat optics, such as optical windows, optical mirrors, and beamsplitters, from scratches during shipping.

View Now

Anti-Reflection (AR) Coating

View Now

Bevel

View Now

Parallelism

View Now

Seamed Edge

View Now

Introduction to Basic Ray Optics

An understanding of refraction and basic ray optics is a critical foundation for understanding more complicated optical concepts and technologies.

View Now

Surface Flatness

View Now

Transmission

View Now

How do I clean my optics?

View Now

Clear Aperture (CA)

View Now

Edmund Optics Global Manufacturing Facilities

Edmund Optics® (EO) manufactures millions of precision optical components and subassemblies every year in our 5 global manufacturing facilities.

View Now

Metrology at Edmund Optics: Measuring as a Key Component of Manufacturing

Learn about the metrology that Edmund Optics® uses to guarantee the quality of all optical components and assemblies.

View Now

Surface Quality

View Now

ISP Optics Calcium Fluoride (CaF2) Windows

Protect your investment.

Common Specifications

Products

Accessories

Related Products

Resources

Anti-Reflection (AR) Coatings

An Introduction to Optical Coatings

Advantages of using engineered chalcogenide glass for color corrected, passively athermalized LWIR imaging systems

Infrared Light

Short Wave Infrared (SWIR)

Beam Displacement Calculator

Understanding Optical Windows

Optical Windows Review

I need a window for imaging underwater. The water is filtered and at room temperature with a very small amount of detergent in it. It is flowing at low speed. Will a MgF2 coated window survive this for a few years?

Advantages of Using Meniscus Lenses in Infrared Applications

The Correct Material for Infrared (IR) Applications

Is it okay to clean an infrared lens, for example one made of germanium, with ethanol?

Infrared (IR) Spectrum

UV vs. IR Grade Fused Silica

What is SWIR?

Hyperspectral and Multispectral Imaging

Hyperspectral & Multispectral Imaging – TRENDING IN OPTICS: EPISODE 7

You offer many substrates for UV and IR applications. How do I know which is best for me?

Optical Glass

Surface Accuracy

BBAR Coating

Understanding Surface Quality Specifications

Removing Protective Plastic Coating

Anti-Reflection (AR) Coating

Bevel

Parallelism

Seamed Edge

Introduction to Basic Ray Optics

Surface Flatness

Transmission

How do I clean my optics?

Clear Aperture (CA)

Edmund Optics Global Manufacturing Facilities

Metrology at Edmund Optics: Measuring as a Key Component of Manufacturing

Surface Quality

ISP Optics Calcium Fluoride (CaF₂) Windows