These Calcium fluoride negative cylindrical lenses are suitable for anamorphic expansion at vacuum ultra-violet wavelengths. They are ideal for use with excimer lasers. Anti-reflection coatings are available as listed earlier in this section. To order an anti-reflection coated lens simply append the wavelength in nanometers to the product number.

Specifications

Material: VUV CaF2

Surface Flatness: < λ/4 @ 633 nm

Surface Quality : <20/10(both sides)

Centration Error: ≤3 arcmin

Focal Length Tolerance ： <±0.5%

Diameter Tolerance: <+0.00/-0.20mm

Thickness Tolerance: <±0.25mm

Clear Aperture : ≥85% of central dimension

Part No.	Lx W (mm)	f(mm) @ 193 nm	f(mm) @ 250 nm	R (mm)	tc (mm)	te (mm)
CYLC-40x25.4CU-025	40x25.4	-49.8	-53.4	25	2.5	6.0
CYLC-40x25.4CU-038	40x25.4	-75.8	-81.2	38	2.5	5.2
CYLC-40x25.4CU-050	40x25.4	-99.7	-106.8	50	5.0	6.6
CYLC-40x25.4CU-075	40x25.4	-149.5	-160.3	75	5.0	6.1
CYLC-40x25.4CU-100	40x25.4	-199.4	-213.7	100	5.0	5.8
CYLC-40x25.4CU-125	40x25.4	-249.2	-267.1	125	5.0	5.6
CYLC-40x25.4CU-250	40x25.4	-498.5	-543.2	250	5.0	5.3
CYLC-40x25.4CU-500	40x25.4	-996.9	-1068.4	500	5.0	5.2