Barium Fluoride Rectangular Windows

Barium Fluoride Windows（rectangular）

Barium fluoride rectangular windows are used as protective windows for electronic sensors or external environmental detectors. The shape is rectangular, which can pass through a specific wavelength of light beam while protecting the interior of the instrument from external environmental influences. Barium fluoride material has a high transmittance from the 200nm-11um region. Applied to lenses, beam splitters, filters, prisms, and window panels in low-temperature refrigeration imaging systems, aerospace optical systems, and laser optical systems. Barium fluoride is prone to cracking and is highly sensitive to thermal shock. It can be polished well and etched.

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	Length(mm)	Width(mm)	ThK(mm)	Surface Accuracy	Surface Quality	Parallelism
	Screen Reset 50 41 38 30 29 25 20 13	Screen Reset 25 23 19 15 14 12 10 13	Screen Reset 6 4 2 1 0.5	Screen Reset 5(3) 3(1)	Screen Reset 60-40 40-20	Screen Reset 3′
More+ Less	50	25	6	5(3)	60-40	3′
Sizes 50mm25mm6mm，Barium Fluoride Rectangular Windows Number：PBa02F014 Length(mm)：50 Width(mm)：25 ThK(mm)：6 Surface Accuracy：5(3) Surface Quality：60-40 Parallelism：3′ Clear Aperture：>90% Length Tolerance(mm)：+0.0/-0.1 Width Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Barium Fluoride（BaF2） Transmission Range：0.15-14μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	41	23	6	5(3)	60-40	3′
Sizes 41mm23mm6mm，Barium Fluoride Rectangular Windows Number：PBa02F008 Length(mm)：41 Width(mm)：23 ThK(mm)：6 Surface Accuracy：5(3) Surface Quality：60-40 Parallelism：3′ Clear Aperture：>90% Length Tolerance(mm)：+0.0/-0.1 Width Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Barium Fluoride（BaF2） Transmission Range：0.15-14μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	38	19	4	3(1)	60-40	3′
Sizes 38mm19mm4mm，Barium Fluoride Rectangular Windows Number：PBa02F001 Length(mm)：38 Width(mm)：19 ThK(mm)：4 Surface Accuracy：3(1) Surface Quality：60-40 Parallelism：3′ Clear Aperture：>90% Length Tolerance(mm)：+0.0/-0.1 Width Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Barium Fluoride（BaF2） Transmission Range：0.15-14μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	30	15	4	3(1)	60-40	3′
Sizes 30mm15mm4mm，Barium Fluoride Rectangular Windows Number：PBa02E009 Length(mm)：30 Width(mm)：15 ThK(mm)：4 Surface Accuracy：3(1) Surface Quality：60-40 Parallelism：3′ Clear Aperture：>90% Length Tolerance(mm)：+0.0/-0.1 Width Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Barium Fluoride（BaF2） Transmission Range：0.15-14μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	29	14	4	3(1)	60-40	3′
Sizes 29mm14mm4mm，Barium Fluoride Rectangular Windows Number：PBa02E004 Length(mm)：29 Width(mm)：14 ThK(mm)：4 Surface Accuracy：3(1) Surface Quality：60-40 Parallelism：3′ Clear Aperture：>90% Length Tolerance(mm)：+0.0/-0.1 Width Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Barium Fluoride（BaF2） Transmission Range：0.15-14μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	25	12	2	3(1)	60-40	3′
Sizes 25mm12mm2mm，Barium Fluoride Rectangular Windows Number：PBa02E001 Length(mm)：25 Width(mm)：12 ThK(mm)：2 Surface Accuracy：3(1) Surface Quality：60-40 Parallelism：3′ Clear Aperture：>90% Length Tolerance(mm)：+0.0/-0.1 Width Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Barium Fluoride（BaF₂） Transmission Range：0.15-14μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	20	10	1	3(1)	60-40	3′
Sizes 20mm10mm1mm，Barium Fluoride Rectangular Windows Number：PBa02D002 Length(mm)：20 Width(mm)：10 ThK(mm)：1 Surface Accuracy：3(1) Surface Quality：60-40 Parallelism：3′ Clear Aperture：>90% Length Tolerance(mm)：+0.0/-0.1 Width Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Barium Fluoride（BaF2） Transmission Range：0.15-14μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	13	13	0.5	3(1)	40-20	3′
Sizes 13mm13mm0.5mm，Barium Fluoride Rectangular Windows Number：PBa02C001 Length(mm)：13 Width(mm)：13 ThK(mm)：0.5 Surface Accuracy：3(1) Surface Quality：40-20 Parallelism：3′ Clear Aperture：>90% Length Tolerance(mm)：+0.0/-0.1 Width Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Barium Fluoride（BaF2） Transmission Range：0.15-14μm Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant

Material Data
Optical Properties
Transmission Range	0.15-14μm
Transmittance	>94%@0.35nm-10.8μm
Refractive Index	1.462@2.58μm 1.45@5μm
Reflection Loss	6.8%@2.58μm(both surfaces) 6.5%@5μm(both surfaces) 5.3%@10.35μm(both surfaces)
Absorption Coefficienet	3.2×10-4@6μm
Structure	Cubic Crystal System
Cleavage Planes	<111>
Physical Properties
Density [g/cm3]	4.89
Melting Point [℃]	1386
Thermal Conductivity [W/(m×K)]	11.72 @ 286K
Thermal Expansion [10-6/K]	18.1 @ 273K
Knoop Hardness [kg/mm2]	82
Specific Heat Capacity [J/(kg×K)]	410
Dielectric Constant	7.33 @ 1 MHz
Young's Modulus (E) [GPa]	53.07
Shear Modulus(G) [GPa]	25.4
Bulk Modulus(K) [GPa]	56.4
Poisson Coefficient	0.343
Chemical Properties
Solubility / g/L	1.7g @ 20℃
Molecular Weight / g/mol	175.3238

Barium Fluoride Windows（rectangular）

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Material Data

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