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Location: Main > Optical Lenses > Spherical Plano Convex Lenses > POLIR-MF-PCX-115-0200-U
Name: DIA20.0mm MgF2 Plano-Convex Lens(f+115mm)
P/N: POLIR-MF-PCX-115-0200-U
Keywords:Dia20.0xTc3.0mm,MgF2,PCX,f+115mm,ROC+44.2mm
Unit Price: S$295.00/pc
Available: In stock
Request: Add to Request List
Introduction:
Magnesium Fluoride(MgF2) transmits well into the VUV region to the hydrogen Lyman-alpha line (121nm) and beyond. MgF2 is used mostly for UV optics and is excellent for Excimer laser applications.
• Wavelength Range: 200 nm - 6.0um
• Material: Vacuum Grade MgF2
Photonik' MgF2 Plano-Convex lenses are popular for many applications in the UV and IR. These lenses are an ideal choice for applications from 200 nm to 6.0um. Magnesium Fluoride is extremely durable in comparison to other materials that reach this far down into the UV or out into the IR. The C-axis is oriented to minimize birefringence.
Plano-Convex lenses have a positive focal length and approach best form for infinite and finite conjugate applications. These lenses focus a collimated beam to the back focus and collimate light from a point source. They are designed with minimal spherical aberration and have a focal length which can be calculated using a simplified thick lens equation: f= R/(n-1), where n is the index of refraction and R is the radius of curvature of the lens surface. To minimize the introduction of spherical aberration, a collimated light source should be incident on the curved surface of the lens when being focused and a point light source should be incident on the planar surface when being collimated.

Substrate Material:
Magnesium Fluoride (MgF2), Vacuum Grade
Wavelength Range:
200 ~ 6,000nm (Refractive index @ 630nm: 1.37698)
Outer Diameter:
20.0,-0.15/+0.0mm
Effective Focal Length(EFL):
+115mm (+/-1%) @ 3000nm
Radius of S1:
ROC: +44.20mm
Radius of S2:
Plano(flat)
Center Thickness(CT):
3.0mm
Clear Aperture:
>90% of surface
Scratch/Dig:
40/20 (both surfaces)
Surface Figure:
<lambda/4 @ 633nm over clear aperture (both surfaces)
Centration:
<3 arc minutes
Edge Surface:
Ground; with protection chamfer of 0.2mmx45deg
Chip:
<0.2mm
Surface Coating:
Uncoated (both surfaces)