VUV-UV Spherical Lenses


Vacuum Ultraviolet (VUV-UV) Plano-Convex Spherical Lenses are available select VUV Grade Magnesium Fluoride (MgF2) and VUV Grade Calcium Fluoride (CaF2) materials.
 

Magnesium Fluoride:  MgF2 exhibits high transmission properties from ~ 120nm Vacuum UV (VUV) to ~ 6.0um in the Infrared.  MgF2 is a relatively hard crystalline material resistant to mechanical and thermal shock.  MgF2 is a birefringent crystal typically oriented along the optical axis to avoid birefringent effects in windows & lenses. 

Calcium Fluoride:  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.

VUV-UV
Plano-Convex Spherical Lenses have one flat (plano) surface and one spherical surface curved outward (convex) to converge the VUV-UV transmitted rays from an object, thus forming a real or virtual image of that object.  A VUV-UV Plano-Convex Spherical Lens is used as a simple imaging lens to focus, collect and collimate VUV-UV light.  These lenses have positive Effective Focal Lengths and are generally used as a focussing element within an VUV-UV optical assembly, VUV-UV instrument or VUV-UV laser.

 

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 MgF2 and CaF2

Nominal Focal Length (NFL) Tol.: ± 3%     

Diameter (Dia = ØTolerance: ± 0.25mm

Thickness Tolerance: ± 0.25mm  

Surface Figure: ~L/10 to ~L/4 @ 633nm nominal

Surface Finish:  20-10 to 40-20 both surfaces

Clear aperture: central 85%

Centration: < 3 arc minutes 

Chamfer: ~ 0.30mm @45 deg.
 

(All dimensions in mm)

 

 

 

   

 


 

                                                         

 

DIA  Ø


RADIUS (R)

NFL  @

157nm


NFL  @

193nm


NFL  @

248nm


NFL  @

308nm


DESCRIPTION 

MATERIAL

PRODUCT #

PRICE  


ORDER

12.7

11.9

21.2

23.7

25.4

26.2

VUV-UV CaF2 Spherical Lens

VUV CaF2

CF1225LCX

$665.00

CF1225LCX

25.4 18.9 40.7 44.2 46.1 47.5 VUV-UV MgF2 Spherical Lens VUV MgF2 MF2545LCX $595.00 MF2545LCX

25.4

23.6

42.2

47.1

50.4

52.1

VUV-UV CaF2 Spherical Lens

VUV CaF2

CF2550LCX

$595.00

CF2550LCX

25.4 28.3 61.0 66.1 69.0 71.1 VUV-UV MgF2 Spherical Lens  VUV MgF2 MF2570LCX $445.00 MF2570LCX

25.4

35.0

62.6

69.9

74.8

77.3

VUV-UV CaF2 Spherical Lens

VUV CaF2

CF2575LCX

$445.00

CF2575LCX

25.4 37.8 81.5 88.3 92.3 95.0 VUV-UV MgF2 Spherical Lens  VUV MgF2 MF2595LCX $445.00 MF2595LCX

25.4

46.4

83.0

92.6

99.1

102.4

VUV-UV CaF2 Spherical Lens

VUV CaF2

CF2510LCX

$425.00

CF2510LCX

25.4 56.6 122.0 132.2 138.1 142.2 VUV-UV MgF2 Spherical Lens  VUV MgF2 MF2514LCX $445.00 MF2514LCX

25.4

70.6

126.3

140.9

150.8

155.8

VUV-UV CaF2 Spherical Lens

VUV CaF2

CF2515LCX

$425.00

CF2515LCX

25.4 75.4 162.5 176.2 184.0 189.4 VUV-UV MgF2 Spherical Lens VUV MgF2 MF2518LCX $445.00 MF2518LCX

25.4

93.2

166.7

186.0

199.1

205.7

VUV-UV CaF2 Spherical Lens

VUV CaF2

CF2520LCX

$425.00

CF2520LCX

25.4 94.3 203.2 220.3 230.2 236.9

VUV-UV MgF2 Spherical Lens

VUV MgF2

MF2525LCX $445.00 MF2525LCX

25.4

118.0

211.1

235.5

252.1

260.5

VUV-UV CaF2 Spherical Lens

VUV CaF2

CF2525LCX

$425.00

CF2525LCX

25.4 188.5 406.2 440.4 460.1 473.6

VUV-UV MgF2 Spherical Lens

VUV MgF2

MF2547LCX $445.00

MF2547LCX

25.4

231.8

414.7

462.7

495.3

511.7

VUV-UV CaF2 Spherical Lens

VUV CaF2

CF2550LCX

$475.00

CF2550LCX

25.4

469.5

840.0

937.1

1003.2

1036.4

VUV-UV CaF2 Spherical Lens

VUV CaF2

CF25100LCX

$475.00

CF25100LCX

 

 



                                                               CaF2 Refractive Index 

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

 

 

 

 

 

                                                 
                                                          MgF2 Refractive Index

Wavelength, nm 157 193 248 308 350
Refractive Index (n) 1.464 1.428 1.4097 1.398 1.393

   

  

 

 

* Also see our UV Fused Silica & BK7 Glass Spherical Lenses

 

 

                   VUV-UV Optical Materials % Transmission Overview: 

                                                                                               

 

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            (Materials transmittance can vary slightly and this data should be used as a reference only.  Based on 2-3mm Thick.) 

 

                                                

                                                   
              eSource Optics / PMB 126 / 1225 Providence Rd. / Whitinsville, MA 01516

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