VUV-UV CaF2 PL-CC Lenses

 

Vacuum Ultraviolet (VUV-UV) Plano-Concave Spherical Lenses are available in select VUV Grade Calcium Fluoride (CaF2) crystalline material.

VUV-UV CaF2 Plano-Concave Spherical Lenses have one flat (plano) surface and one spherical surface curved inward (concave) to diverge VUV-UV transmitted rays from an object, and can be used to diverge collimated beams.  VUV-UV CaF2 Plano-Concave Spherical Lenses have negative effective focal lengths and can be used to offset the effects of spherical aberration caused by other lenses in a VUV-UV optical system, VUV-UV instrument or VUV-UV laser.

Also see eSource Optics VUV-UV MgF2 & CaF2 Spherical Plano-Convex Lenses , VUV-UV CaF2 Bi-Convex & Bi-Concave Spherical Lenses  & VUV-UV CaF2 Positive & Negative Meniscus Lenses


VUV Grade Calcium Fluoride: VUV grade CaF2 exhibits good transmission properties from ~ 145nm Vacuum UV (VUV) to ~ 8.0um in the Infrared.  CaF2 is a relatively soft crystalline material and care should be taken as CaF2 is sensitive to mechanical and thermal shock.  CaF2 is a cubic single crystal optical material.

More information can be found on our Material Properties Page.   For more information about Spherical Lenses, refer to our Optics Tutorial page
          
                     

 

SPECIFICATIONS

Material: VUV Grade CaF2
Effective Focal Length (EFL) 

Tol.: ± 2%      
Radius of Curvature (ROC) Tol.:
within ± 1%     
Diameter (Dia = Ø) Tolerance: ±0.25mm
Thickness Tolerance: ±0.25mm  
Surface Figure: ~L/2 @ 633nm nominal
Surface Finish:  40-20 both surfaces
Clear Aperture: central 85%
Centration: < 3 arc minutes 
Chamfer: ~ 0.30mm @45 deg.

(All dimensions in mm)

 

 

                      

 

 

 

                                                                       

DIA  Ø (mm)

RADIUS (R)

EFL  @
157nm

EFL  @
193nm

EFL  @
248nm


BACK FOCAL LENGTH
 (BFL  @
193nm)

CENTER THICKNESS (CT) 

DESCRIPTION

MATERIAL

PRICE  

PRODUCT # ORDER

12.7mm

-7.8mm 

-14.0mm

-15.6mm -16.7mm

-16.9mm

2.0mm

VUV-UV CaF2 Spherical Lens

VUV CaF2

$220.00

CF1220LCC

12.7mm -10.8mm -19.3mm -21.5mm -23.2mm -23.2mm 2.5mm

VUV-UV CaF2 Spherical Lens

VUV CaF2

$205.00 CF1225LCC
25.4mm -17.4mm -31.1mm -34.7mm -37.1mm -36.0mm 2.0mm

VUV-UV CaF2 Spherical Lens

VUV CaF2

$275.00 CF2540LCC
25.4mm -32.5mm -58.2mm -64.8mm -69.5mm -66.5mm 2.5mm VUV-UV CaF2 Spherical Lens

VUV CaF2

$265.00 CF2570LCC
25.4mm -43.4mm -77.7mm -86.5mm -92.3mm -88.6mm 3.0mm

VUV-UV CaF2 Spherical Lens

VUV CaF2

$260.00 CF2590LCC

25.4mm

-86.8mm

-155.4mm

-173.1mm -185.4mm -175.5mm 3.5mm

VUV-UV CaF2 Spherical Lens

VUV CaF2

$255.00

CF25175LCC

25.4mm -216.9mm -388.2mm -432.5mm -463.5mm -435.3mm 4.0mm VUV-UV CaF2 Spherical Lens

VUV CaF2

$250.00 CF25435LCC

 

 



                                                               CaF2 Refractive Index 

Wavelength, nm 157 193 248 308 350
Refractive Index (n) 1.559 1.501 1.468 1.453 1.445

 

 

  

                                                

                                                   
              eSource Optics / PMB 126 / 1225 Providence Rd. / Whitinsville, MA 01588

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