Each UVFS lens presented here can be offered with a 532/1064 nm, 405 nm, 532 nm, or 633, or 1064 nm, or 1550 nm nm laser line V-coating. Our V-coats have a minimum reflectance of less than 0.25% per surface at the coating wavelength and are designed for angles of incidence (AOI) between 0° and 20°. Compared to our broadband AR coatings, V-coatings achieve lower reflectance over a narrower bandwidth when used at the specified AOI. For more information on other AR coatings such as broadband of 245 – 400 nm, 350 – 700 nm, or 650 – 1050 nm, please contact us for details.
Paralight Optics offers UV or IR-Grade Fused Silica (JGS1 or JGS3) Plano-Convex (PCX) lenses available in different sizes, either uncoated lenses or with a high-performance multi-layer antireflection (AR) coating optimized for the ranges of 245-400nm, 350-700nm, 650-1050nm, 1050-1700nm, 532/1064nm, 405nm, 532nm, 633nm deposited on both surfaces, this coating greatly reduces the high surface reflectivity of the substrate less than 0.5% across the entire AR coating range for angles of incidence (AOI) between 0° and 30°. For optics intended to be used at large incident angles, consider using a custom coating optimized at a 45° angle of incidence; this custom coating is effective from 25° to 52°. Check the following Graphs for your references.
JGS1
Better Homogeneity and a Lower Coefficient of Thermal Expansion than N-BK7
245-400nm, 350-700nm, 650-1050nm, 1050-1700nm, 532/1064nm, 405nm, 532nm, 633nm
Available from 10 - 1000 mm
Dia: Diameter
f: Focal Length
ff: Front Focal Length
fb: Back Focal Length
R: Radius
tc: Center Thickness
te: Edge Thickness
H”: Back Principal Plane
Note: The focal length is determined from the back principal plane, which does not necessarily line up with the edge thickness.
Substrate Material
UV-Grade Fused Silica (JGS1)
Type
Plano-Convex (PCV) Lens
Index of Refraction
1.4586 @ 588 nm
Abbe Number (Vd)
67.6
Thermal Expansion Coefficient (CTE)
5.5 x 10-7 cm/cm. ℃ (20℃ to 320℃)
Diameter Tolerance
Precison: +0.00/-0.10mm | High Precision: +0.00/-0.02mm
Thickness Tolerance
Precison: +/-0.10 mm | High Precision: -0.02 mm
Focal Length Tolerance
+/-0.1%
Surface Quality (Scratch-Dig)
Precison: 60-40 | High Precision: 40-20
Surface Flatness (Plano Side)
λ/4
Spherical Surface Power (Convex Side)
3 λ/4
Surface Irregularity (Peak to Valley)
λ/4
Centration
Precison: < 5 arcmin | High Precision: <30 arcsec
Clear Aperture
90% of Diameter
AR Coating Range
See the above description
Transmission over Coating Range (@ 0° AOI)
Ravg > 97%
Reflectance over Coating Range (@ 0° AOI)
Tavg < 0.5%
Design Wavelength
587.6 nm
Laser Damage Threshold
5 J/cm2 (10ns,10Hz,@355nm)
♦ Transmission curve of uncoated NBK-7 substrate: high transmission from 0.185 µm to 2.1 μm
♦ The V-coating is a multilayer, anti-reflective, dielectric thin-film coating designed to achieve minimal reflectance over a narrow band of wavelengths. Reflectance rises rapidly on either side of this minimum, giving the reflectance curve a “V” shape, as shown in the following performance plots for 532nm, 633nm, and 532/1064nm V-coatings. For more information or get a quote, feel free to contact us.