Bi-Convex Lens, Fused Silica, 25.4 mm Diameter, 20.0 mm EFL, 245-440nm

The SBX018AR.10 Fused Silica Bi-Convex Lens is a 25.4 mm diameter, 245 to 440 nm anti-reflection coated, fused silica bi-convex lens with an effective focal length of 20.0 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
25.4 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/8
Surface Accuracy, Power
1.5 λ
F/#
0.8
Effective Focal Length (EFL)
20.0 mm
Back Focal Length (BFL)
15.3 mm

Edge Thickness (Te)
2.60 mm
Center Thickness (Tc)
16.000 mm
Principal Plane 1 (P1)
6.10 mm
Principal Plane 2 (P2)
-6.1 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
25.4 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/8
Surface Accuracy, Power
1.5 λ
F/#
0.8
Effective Focal Length (EFL)
20.0 mm
Back Focal Length (BFL)
15.3 mm

Edge Thickness (Te)
2.60 mm
Center Thickness (Tc)
16.000 mm
Principal Plane 1 (P1)
6.10 mm
Principal Plane 2 (P2)
-6.1 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

3D Product Models

2D Product Drawings

BI-CONVE-XLE-S(89.3 kB, PDF)
SBX018AR.10 Zemax File(5.3 kB, ZMX)

Other

SBX018AR.10 RoHS Certificate(706.2 kB, PDF)
AR.10 Raw Data.xlsx(81.2 kB, XLSX)

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