Name: 25.4mm Dia., 1mm Thick Uncoated, Calcium Fluoride Window
Brand: TECHSPEC
SKU: 22-457
Price: €154,00

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25.4mm Dia., 1mm Thick Uncoated, Calcium Fluoride Window

TECHSPEC Calcium Fluoride (CaF2) Windows

Stock #22-457 3-4 days

- +

€154^,00

Qty 1-10
€154,00

Qty 11+
€136,00

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Product Downloads

STEP:step

PDF Drawing:pdf

IGES:igs

eDrawing:eprt

EO Spec Sheet

Specifications

General

Type:

Protective Window

Physical & Mechanical Properties

Bevel:

Protective as needed

Clear Aperture (%):

Clear Aperture CA (mm):

22.86

Diameter (mm):

25.40 +0.0/-0.1

Thickness (mm):

1.00 ±0.1

Edges:

Fine Ground

Knoop Hardness (kg/mm²):

158.3

Parallelism (arcmin):

Poisson's Ratio:

0.26

Young's Modulus (GPa):

75.8

Optical Properties

Abbe Number (v_d):

94.99

Axis Orientation:

Random

Coating:

Uncoated

Index of Refraction (n_d):

1.434

Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More

Calcium Fluoride (CaF₂) Vacuum UV Grade

Surface Flatness (P-V):

1λ

Surface Quality:

40-20

Wavelength Range (nm):

200 - 7000

Material Properties

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

18.85

Density (g/cm³):

3.18

Regulatory Compliance

RoHS:

Compliant

Certificate of Conformance:

View

Product Details

Low Absorption, High Transmission UV Grade Calcium Fluoride
Low Index of Refraction
AR Coatings Spanning 250 - 5000nm Available
Calcium Fluoride (CaF2) Wedged Windows also Available

TECHSPEC® Calcium Fluoride (CaF2) Windows offer a low index of refraction, providing high transmission from 200 - 7000nm when used uncoated. To further increase transmission and reduce back reflections, a variety of AR coatings are available spanning wavelength regions from the Ultra-Violet (UV) to the Mid-Wave Infrared (MWIR). The high bulk damage threshold of calcium fluoride coupled with its low absorption makes it a popular choice for use with laser systems, including excimer lasers. TECHSPEC® Calcium Fluoride (CaF2) Windows are ideal for use as protective windows for gas detectors operating in the Vacuum UV (VUV) and MWIR, UV spectroscopy systems, cryogenically cooled thermal imaging systems, and as substrates for coatings requiring wideband substrate transmission.

Note: Calcium fluoride is a relatively soft optical material and is more susceptible to scratches than typical glass windows.

Custom

Edmund Optics offers comprehensive custom manufacturing services for optical and imaging components tailored to your specific application requirements. Whether in the prototyping phase or preparing for full-scale production, we provide flexible solutions to meet your needs. Our experienced engineers are here to assist—from concept to completion.

Our capabilities include:

Custom dimensions, materials, coatings, and more
High-precision surface quality and flatness
Tight tolerances and complex geometries
Scalable production—from prototype to volume

Learn more about our custom manufacturing capabilities or submit an inquiry here.

Imaging Lens Selector

25.4mm Dia., 1mm Thick Uncoated, Calcium Fluoride Window