Plano-Convex Lens, Fused Silica, 25.4 mm, 500 mm EFL, AR.4 coated

uv fused silica plano-convex lens 1.0 inch (25.4 mm) diameter

The SPX031AR.4 High Energy Fused Silica Lens is a broadband AR.4 coated (at 230-266 nm), 1 inch (25.4 mm) diameter, HPFS 7978 plano-convex lens with an effective focal length of 500.0 mm at 546.1 nm. It is designed for high frequency laser pulses where standard grade fused silica does not perform very well. The special grade fused silica Corning HPFS 7978 has very low hydroxyl molecule presence compared to standard fused silica material, which results in less absorption of laser light and greatly reducing the chances of internal damage.

Specifications

Technical Specs

Lens Shape
Plano-Convex
Diameter
25.4 mm
Lens Material
HPFS 7978
Antireflection Coating
230-266 nm
Coating Code
AR.4
Reflectance
R_avg<0.50% @ 230-266 nm
Damage Threshold
15 J/cm², 20 nsec pulses, 10 Hz at 1064 nm
Surface Quality
15-5 scratch-dig
Surface Flatness
λ/10
Surface Accuracy, Irregularity
λ/8
Surface Accuracy, Power
1.5 λ
F/#
19.7

Back Focal Length (BFL)
497.70 mm
Radius of Curvature (R)
229.500 mm
Edge Thickness (Te)
3.0 mm
Center Thickness (Tc)
3.352 mm
Design Wavelength
589 nm
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-Convex
Diameter
25.4 mm
Lens Material
HPFS 7978
Antireflection Coating
230-266 nm
Coating Code
AR.4
Reflectance
R_avg<0.50% @ 230-266 nm
Damage Threshold
15 J/cm², 20 nsec pulses, 10 Hz at 1064 nm
Surface Quality
15-5 scratch-dig
Surface Flatness
λ/10
Surface Accuracy, Irregularity
λ/8
Surface Accuracy, Power
1.5 λ
F/#
19.7

Back Focal Length (BFL)
497.70 mm
Radius of Curvature (R)
229.500 mm
Edge Thickness (Te)
3.0 mm
Center Thickness (Tc)
3.352 mm
Design Wavelength
589 nm
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

PLANOCO1 VEX-S(89.6 kB, PDF)

Other

SPX031AR.4 RoHS Certificate(705.7 kB, PDF)
AR.4 Raw Data.xlsx(53.6 kB, XLSX)

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