Bi-Convex Lens, Fused Silica, 50.8 mm Diameter, 50.2 mm EFL, 1064nm

The SBX049AR.33 Fused Silica Bi-Convex Lens is a 50.8 mm diameter, 1064 nm anti-reflection coated, fused silica bi-convex lens with an effective focal length of 50.2 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
1064 nm
Coating Type
Laser Line V-Coat Multilayer
Coating Code
AR.33
Damage Threshold
12 J/cm² for 10 ns pulses, 10 Hz @ 1064 nm
Surface Quality
20-10 scratch-dig
Surface Flatness
λ/2
Surface Accuracy, Irregularity
λ/8
Surface Accuracy, Power
1.5 λ
F/#
1
Effective Focal Length (EFL)
50.2 mm
Back Focal Length (BFL)
42.90 mm
Radius of Curvature (R)
42.738 mm

Edge Thickness (Te)
3.0 mm
Center Thickness (Tc)
19.733 mm
Principal Plane 1 (P1)
7.29 mm
Principal Plane 2 (P2)
-7.29 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
1064 nm
Coating Type
Laser Line V-Coat Multilayer
Coating Code
AR.33
Damage Threshold
12 J/cm² for 10 ns pulses, 10 Hz @ 1064 nm
Surface Quality
20-10 scratch-dig
Surface Flatness
λ/2
Surface Accuracy, Irregularity
λ/8
Surface Accuracy, Power
1.5 λ
F/#
1
Effective Focal Length (EFL)
50.2 mm
Back Focal Length (BFL)
42.90 mm
Radius of Curvature (R)
42.738 mm

Edge Thickness (Te)
3.0 mm
Center Thickness (Tc)
19.733 mm
Principal Plane 1 (P1)
7.29 mm
Principal Plane 2 (P2)
-7.29 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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