IR grade optical CaF2/BaF2/MgF2/LiF Crystal Cylinder lens Spherical Lenses Calcium Fluoride Plano Concave Lens
Calcium fluoride (CaF2) crystal has the advantages of wide transmittance range (good transmittance in the wavelength range of 0.13μm~10μm), low stress birefringence (no obvious intrinsic birefringence above 200nm), high refractive index uniformity, stable mechanical properties, no deliquency, strong resistance to radiation damage, etc. It is an ideal material for making various optical components such as optical Windows, prisms and lenses.
Material Characteristics
|
Material |
CaF2 |
|
Crystal Orientation |
<100>,<110>,<111> |
|
Crystal Structure |
Cubic |
|
Lattice Constant |
a=5.462Å |
|
Growth Method |
Bridgman |
|
Melting Point |
1418℃ |
|
Density |
3.18g/cm3 |
|
Thermal Expansion |
18.85(x10-6/oC) |
|
Refractive Index |
ho1.37740,he1.43382 |
|
Transmission Band |
0.11-12.0 um |
|
Transmittance |
> 94% @ 5 um |
|
>85% @ 0.2 um |
|
|
hf-hc |
0.00455 |
|
Temperature Coefficient |
-10.6 @ 0.8 m ( dh / dt x 10-6 ) |
Processing Capacity
|
Size |
5×5mm, 10×10mm, Φ50.8mm etc. |
|
Thickness |
0.2mm ~ 10mm as required |
|
Surface Finish |
Single or double side polish (DSL/SSP/DSP available) |
|
S/D |
60/40 40/20 20/10 |
|
Polished side Ra |
Roughness Ra <0.5nm |
|
Back Side Criteria |
Roughness Ra:0.5-1.0µm GC#1000 |
|
1. Determine the inquiry specifications and quantity. Take RFQ Specification Sheet (please request) as a guidance.
2. BonTek will quote you within 24hrs with a unique Quote Number.
3. If you accept the quote, place an order with us and put the Quote Number in the PO so we will locate the specification quickly.
4. BonTek will confirm the PO within 24hrs with a delivery date.
5. Arrange payment and BonTek will ship when the products are ready. |
|
1. The product is fragile. We have adequately packed it and labeled it fragile. We deliver through excellent domestic and international express companies to ensure transportation quality.
2. After receiving the goods, please handle with care and check whether the outer carton is in good condition. Carefully open the outer carton and check whether the packing boxes are in alignment. Take a picture before you take them out.
3. Please open the vacuum package in a clean room when the products are to be applied.
4. If the products are found damaged during courier, please take a picture or record a video immediately. DO NOT take the damaged products out of the packaging box! Contact us immediately and we will solve the problem well. |
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