Lithium Fluoride Round Windows

Lithium Fluoride Windows（round）

Lithium fluoride round windows have excellent optical properties and are used to separate the environment on both sides, isolating the interior and exterior of the instrument, thereby protecting internal components. It has high transmittance and reflectivity in the ultraviolet and infrared bands. Lithium fluoride has a low refractive index in infrared materials, with a transmission spectrum range of 120nm-7000nm. It is used for lenses, prisms, and windows in thermal imaging systems, aerospace optical systems, and excimer laser optical systems. UM OPTICS can provide different types of window sheets such as circular, rectangular, wedge-shaped, perforated, and stepped sheets.

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All products are provided with invoices, with a tax point of 13.

The product undergoes multiple inspections before being stored, and the quality is guaranteed. Please use it with confidence.

Spot products, shipped within 48 hours. For non stock or customized products, please consult.

International order logistics include DHL, FedEx, TNT, and EMS

When receiving the product, please ensure the integrity of the product packaging box first. If there is serious damage to the appearance, please refuse and contact us, and we will handle it for you as soon as possible.

Optical products are special items and cannot be returned or exchanged unless there is a quality issue with the product itself

If you need customization or bulk production, please contact us online and we will offer you a discounted price.

	Dia(mm)	ThK(mm)	Parallelism	Surface Quality	Surface Accuracy	Bevel(mm)
	Screen Reset 25.4 12.7 10 6 5	Screen Reset 3 2 1 0.5	Screen Reset 3′	Screen Reset 60-40	Screen Reset λ/2	Screen Reset 0.35
More+ Less	25.4	3	3′	60-40	λ/2	0.35
Φ25.4mm，Thickness 3mm，Lithium Fluoride Round Windows Number：PLi01E003 Dia(mm)：25.4 ThK(mm)：3 Parallelism：3′ Surface Quality：60-40 Surface Accuracy：λ/2 Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.11-7μm Substrate Material：Lithium Fluoride（LiF） Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	25.4	2	3′	60-40	λ/2	0.35
Φ25.4mm，Thickness 2mm，Lithium Fluoride Round Windows Number：PLi01E002 Dia(mm)：25.4 ThK(mm)：2 Parallelism：3′ Surface Quality：60-40 Surface Accuracy：λ/2 Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.11-7μm Substrate Material：Lithium Fluoride（LiF） Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	25.4	1	3′	60-40	λ/2	0.35
Φ25.4mm，Thickness 1mm，Lithium Fluoride Round Windows Number：PLi01E001 Dia(mm)：25.4 ThK(mm)：1 Parallelism：3′ Surface Quality：60-40 Surface Accuracy：λ/2 Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.11-7μm Substrate Material：Lithium Fluoride（LiF） Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	12.7	3	3′	60-40	λ/2	0.35
Φ12.7mm，Thickness 3mm，Lithium Fluoride Round Windows Number：PLi01C003 Dia(mm)：12.7 ThK(mm)：3 Parallelism：3′ Surface Quality：60-40 Surface Accuracy：λ/2 Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.11-7μm Substrate Material：Lithium Fluoride（LiF） Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	12.7	2	3′	60-40	λ/2	0.35
Φ12.7mm，Thickness 2mm，Lithium Fluoride Round Windows Number：PLi01C002 Dia(mm)：12.7 ThK(mm)：2 Parallelism：3′ Surface Quality：60-40 Surface Accuracy：λ/2 Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.11-7μm Substrate Material：Lithium Fluoride（LiF） Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	12.7	1	3′	60-40	λ/2	0.35
Φ12.7mm，Thickness 1mm， Lithium Fluoride Round Windows Number：PLi01C001 Dia(mm)：12.7 ThK(mm)：1 Parallelism：3′ Surface Quality：60-40 Surface Accuracy：λ/2 Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.11-7μm Substrate Material：Lithium Fluoride（LiF） Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	10	1	3′	60-40	λ/2	0.35
Φ10mm，Thickness 1mm，Lithium Fluoride Round Windows Number：PLi01B003 Dia(mm)：10 ThK(mm)：1 Parallelism：3′ Surface Quality：60-40 Surface Accuracy：λ/2 Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.11-7μm Substrate Material：Lithium Fluoride（LiF） Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	6	1	3′	60-40	λ/2	0.35
Φ6mm，Thickness 1mm，Lithium Fluoride Round Windows Number：PLi01B002 Dia(mm)：6 ThK(mm)：1 Parallelism：3′ Surface Quality：60-40 Surface Accuracy：λ/2 Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.11-7μm Substrate Material：Lithium Fluoride（LiF） Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	6	0.5	3′	60-40	λ/2	0.35
Φ6mm，Thickness 0.5mm，Lithium Fluoride Round Windows Number：PLi01B001 Dia(mm)：6 ThK(mm)：0.5 Parallelism：3′ Surface Quality：60-40 Surface Accuracy：λ/2 Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.11-7μm Substrate Material：Lithium Fluoride（LiF） Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant
More+ Less	5	1	3′	60-40	λ/2	0.35
Φ5mm，Thickness 1mm，Lithium Fluoride Round Windows Number：PLi01A001 Dia(mm)：5 ThK(mm)：1 Parallelism：3′ Surface Quality：60-40 Surface Accuracy：λ/2 Clear Aperture：>90% Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.11-7μm Substrate Material：Lithium Fluoride（LiF） Bevel(mm)：0.35 Coating：Uncoated REACH：Compliant ROHS：Compliant

Material Data
Optical Properties
Transmission Range	0.11-7μm
Transmittance	>94.8%@0.6μm
Reflection Loss	5.2%@0.6μm(both surfaces)
Absorption Coefficienet	5.9×10-3@4.3μm
Structure	Cubic Crystal System
Cleavage Planes	<100>
Physical Properties
Density [g/cm3]	2.639
Melting Point [℃]	848
Thermal Conductivity [W/(m×K)]	11.3 @ 314K
Thermal Expansion [10-6/K]	37.0 @ 283K
Knoop Hardness [kg/mm2]	415
Specific Heat Capacity [J/(kg×K)]	1562
Dielectric Constant	7.33 @ 1 MHz
Young's Modulus (E) [GPa]	64.79
Shear Modulus(G) [GPa]	55.14
Bulk Modulus(K) [GPa]	62.03
Poisson Coefficient	0.22
Chemical Properties
Solubility / g/L	2.7g @ 20℃
Molecular Weight / g/mol	25.9394

Lithium Fluoride Windows（round）

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Material Data

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