Bi-Convex Lens, Fused Silica, 50.8 mm Diameter, 200 mm EFL, Uncoated

The SBX061 Fused Silica Bi-Convex Lens is an uncoated, 50.8 mm diameter, fused silica bi-convex lens with an effective focal length of 200 mm. It is designed to meet the demanding requirements of laser electro-optic applications. Newport's UV grade fused silica precision bi-convex 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
Bi-Convex
Diameter
50.8 mm
Lens Material
UV Fused Silica
Antireflection Coating
Uncoated
Surface Quality
20-10 scratch-dig
Surface Flatness
λ/2
Surface Accuracy, Irregularity
λ/8
Surface Accuracy, Power
1.5 λ
F/#
3.9
Effective Focal Length (EFL)
200 mm
Back Focal Length (BFL)
197.74 mm
Radius of Curvature (R)
182.571 mm
Edge Thickness (Te)
3.0 mm
Center Thickness (Tc)
6.551 mm

Principal Plane 1 (P1)
2.25 mm
Principal Plane 2 (P2)
-2.25 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
Bi-Convex
Diameter
50.8 mm
Lens Material
UV Fused Silica
Antireflection Coating
Uncoated
Surface Quality
20-10 scratch-dig
Surface Flatness
λ/2
Surface Accuracy, Irregularity
λ/8
Surface Accuracy, Power
1.5 λ
F/#
3.9
Effective Focal Length (EFL)
200 mm
Back Focal Length (BFL)
197.74 mm
Radius of Curvature (R)
182.571 mm
Edge Thickness (Te)
3.0 mm
Center Thickness (Tc)
6.551 mm

Principal Plane 1 (P1)
2.25 mm
Principal Plane 2 (P2)
-2.25 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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