12.7mm Calcium Fluoride Plano Convex Lens, 20mm Focal Length

SLCFU-12.7-20N

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Calcium fluoride (CaF₂) is a crystal which has excellent transmission characteristics in a wide wavelength range from ultraviolet (200nm) to near-infrared (8μm).

Details

◦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.

More Information

More Information
Name	12.7mm Calcium Fluoride Plano Convex Lens, 20mm Focal Length
Weight	0.0050lbs
Standard Coatings Available	No
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.
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%.
Diameter	12.7mm
Focal length	20mm
Material	Optical CaF₂ Crystal
Design Wavelength	5μm
Coating	Uncoated
Surface reflectance	3% (per one surface)
Shape Type	Plano-convex spheric (Polished surface on both sides)
Centration	＜3′
Clear aperture	90% of the diameter
Surface Quality (Scratch-Dig)	40-20
Diameter	φ12.7mm
Focal length f	20mm
Back focal length fb	mm
Edge thickness te	mm
Center thickness tc	mm

Out of stock

SKU

SLCFU-12.7-20N

Calcium fluoride (CaF₂) is a crystal which has excellent transmission characteristics in a wide wavelength range from ultraviolet (200nm) to near-infrared (8μm).