Calcium Fluoride Plano Convex Lens / SLCFU-25.4-50P
Calcium fluoride (CaF2) is a crystal which has excellent transmission characteristics in a wide wavelength range from ultraviolet (200nm) to near-infrared (8μm).In addition to the existing plano-convex lens, a new plano-concave lens has been added to the lineup. The surface quality of the lenses is also improved.
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Part Number
SLCFU-25.4-50P
¥37,600
◦Impurities and crystal defects were reduced, and the transmission characteristics in the ultraviolet region were increased. CaF2 is used for the range from the ultraviolet to the infrared.
◦When compared with other crystals, CaF2 has high durability to moisture, and it can be treated the same as the general optical elements.
◦Since CaF2 is isotropic crystal, birefringence (polarization characteristics) does not occur.
◦When compared with other crystals, CaF2 has high durability to moisture, and it can be treated the same as the general optical elements.
◦Since CaF2 is isotropic crystal, birefringence (polarization characteristics) does not occur.
| Catalog Code | W3189 |
|---|---|
| RoHS | Yes |
| CE | No |
| Download Product's Datasheet | |
| Guide | ▶It is available with an AR coating to reduce the transmission loss at the requested wavelength. ▶It is also available for products with different size and focal lengths that are not listed in on the website or in the catalog. ▶Custom-made products with higher precision are also available.If you have any requests, please contact our sales. |
| Attention | ▶It may be broken and be cleavaged by a sudden temperature change and shock. CaF2 has low hardness and scratch upon contact with metal and glass. Please use very carefully. ▶There is not an anti-reflection coating on the surfaces and the loss due to surface reflection (3% per surface) results in transmittance of about 94%. ▶If you use the product with dust or debris on the surface, it may not perform at its full potential. In the worst case, damage by laser, etc. may occur. |
| Edge thickness te | 2.0mm |
| Focal length tolerance | ±1% |
| Surface Quality (Scratch-Dig) | 40-20 |
| Back focal length fb | 45.9mm |
| Lens Type | Plano concave |
| Diameter φA | φ25.4mm |
| Focal length f | 50mm |
| Design wavelength | 355nm |
| Center thickness tc | 6mm |
| Surface roughness | Ra < 0.5nm |
| Centration | < 1′ |
| Surface Flatness | Flat surface λ/4 (PV), Convex surface λ/4 (PV) |
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