Plano-Concave Lens, Fused Silica, 50.8 mm, -500 mm EFL, 245-440 nm

The SPC040AR.10 Fused Silica Plano-Concave Lens is a 245 to 440 nm antireflection coated 50.8 mm diameter fused silica plano-concave lens with an effective focal length of -500 mm. It is designed to meet the demanding requirements of laser electro-optic applications, Newport's UV grade fused silica precision plano-concave lenses are polished to tight tolerances using master test plates to ensure minimum wavefront distortion. UV grade fused silica will not fluoresce under UV light and is resistant to radiation. And for high-energy applications, the extreme purity of fused silica eliminates microscopic defect sites that could lead to laser damage.

Specifications

Technical Specs

Lens Shape
Plano-Concave
Diameter
50.8 mm
Lens Material
UV Fused Silica
Antireflection Coating
245-440 nm
Coating Type
UV Multilayer
Coating Code
AR.10
Damage Threshold
2 J/cm², 10 nsec pulses, 10 Hz at 355 nm
Surface Quality
20-10 scratch-dig
Surface Flatness
λ/2
Surface Accuracy, Irregularity
λ/4
Surface Accuracy, Power
1.5 λ
F/#
-9.8
Effective Focal Length (EFL)
-500 mm
Back Focal Length (BFL)
-501.71 mm
Radius of Curvature (R)
-229.500 mm

Edge Thickness (Te)
3.64 mm
Center Thickness (Tc)
2.5 mm
Principal Plane 2 (P2)
-1.71 mm
Design Wavelength
589 nm
Centration
≤3 arc min
Chamfers
0–0.8 mm face width
Chamfers Angle/Tolerance
45° ±15°, typical
Focal Length Tolerance
±1 %
Diameter Tolerance
+0/-0.1 mm
Center Thickness Tolerance
±0.1 mm
Clear Aperture
≥central 90% of diameter
Cleaning
See How to Clean Optics

Lens Shape
Plano-Concave
Diameter
50.8 mm
Lens Material
UV Fused Silica
Antireflection Coating
245-440 nm
Coating Type
UV Multilayer
Coating Code
AR.10
Damage Threshold
2 J/cm², 10 nsec pulses, 10 Hz at 355 nm
Surface Quality
20-10 scratch-dig
Surface Flatness
λ/2
Surface Accuracy, Irregularity
λ/4
Surface Accuracy, Power
1.5 λ
F/#
-9.8
Effective Focal Length (EFL)
-500 mm
Back Focal Length (BFL)
-501.71 mm
Radius of Curvature (R)
-229.500 mm

Edge Thickness (Te)
3.64 mm
Center Thickness (Tc)
2.5 mm
Principal Plane 2 (P2)
-1.71 mm
Design Wavelength
589 nm
Centration
≤3 arc min
Chamfers
0–0.8 mm face width
Chamfers Angle/Tolerance
45° ±15°, typical
Focal Length Tolerance
±1 %
Diameter Tolerance
+0/-0.1 mm
Center Thickness Tolerance
±0.1 mm
Clear Aperture
≥central 90% of diameter
Cleaning
See How to Clean Optics

Resources & Downloads

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