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Mounted UV Fused Silica Plano-Convex Lenses, Uncoated


  • Wavelength Range: 185 nm - 2.1 µm
  • Zemax Files Available
  • Ø1/2", Ø1", Ø2", or Ø75 mm Optics in SM-Threaded Mounts

LA4647-ML

(Ø1/2")

LA4380-ML

(Ø1")

LA4148-ML

Mounted in a KB1P
Quick-Release Mount
(Mount Sold Separately)

LA4904-ML

(Ø2")

Related Items


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UV Fused Silica Plano-Convex Lenses, Uncoated
Lens Shape Plano-Convex
Material UV-Grade Fused Silicaa
Wavelength Range 185 nm - 2.1 μm
Diameters Available Ø1/2" in SM05-Threaded Mount
(0.535"-40)
Ø1" in SM1-Threaded Mount
(1.035"-40)
Ø2" in SM2-Threaded Mount
(2.035"-40)
Ø75 mm in SM3-Threaded Mount
(3.035"-40)
Diameter Tolerance +0.00 mm / -0.10 mm
Clear Aperture Ø1/2" Lenses: >Ø11.05 mm
Ø1" Lenses: >Ø22.86 mm
Ø2" Lenses: >Ø45.72 mm
Ø75 mm Lenses: >Ø67.50 mm
Design Wavelength 546 nmb
Index of Refraction
(@ 546 nm)
1.460
Surface Quality 40-20 Scratch-Dig
Surface Flatness
(Plano Side)
λ/2
Spherical Surface Power
(Convex Side)c
3λ/2
Surface Irregularity
(Peak to Valley)
λ/4
Centration ≤3 arcmin
Focal Length Tolerance ±1%
  • Click Link for Detailed Specifications on the Substrate
  • For LA4052-ML, LA4306-ML, LA4148-ML, LA4725-ML, and LA4380-ML the design wavelength is 587.6 nm.
  • Much like surface flatness for flat optics, spherical surface power is a measure of the deviation between the surface of the curved optic and a calibrated reference gauge, typically for a 633 nm source, unless otherwise stated. This specification is also commonly referred to as surface fit.

Features

  • Ø1/2", Ø1", Ø2", and Ø75 mm Lenses Available in SM-Threaded Mounts
  • UV-Grade Fused Silica
  • Wavelength Range: 185 nm - 2.1 μm (Uncoated)
  • Focal Lengths Available from 20.0 - 1000.0 mm

These UV Grade Fused Silica Plano-Convex lenses, which are available in Ø1/2", Ø1", Ø2", and Ø75 mm sizes in threaded mounts, have a wavelength range of 185 nm - 2.1 μm. UV-grade fused silica offers high transmission in the deep UV and exhibits virtually no laser-induced fluorescence (as measured at 193 nm), making it an ideal choice for applications from the UV to the near IR. In addition, UV fused silica has better homogeneity and a lower coefficient of thermal expansion than N-BK7.

Plano-convex lenses have positive focal lengths and are the most popular type of lens element. They are commonly used to focus a collimated incident beam; in such cases the collimated light source should be incident on the curved surface to minimize spherical aberrations. When image quality is not critical, plano-convex lenses can also be used as a substitute for achromatic doublets.

When deciding between a plano-convex lens and a bi-convex lens, both of which cause collimated incident light to converge, it is usually preferrable to choose a plano-convex lens if the desired absolute magnification is either less than 0.2 or greater than 5. Between these two values, bi-convex lenses are generally preferred.

Thorlabs also offers unmounted versions of our UV-grade fused silica lenses, either uncoated or with an AR coating for one of the following wavelength ranges: 245 - 400 nm (-UV), 350 - 700 nm (-A), 650 - 1050 nm (-B), 1050 - 1700 nm (-C),  or 532/1064 nm (-YAG).

Optic Cleaning Tutorial
Optical Coatings and Substrates
Lens Tutorial
Zemax Files
Click on the red Document icon next to the item numbers below to access the Zemax file download. Our entire Zemax Catalog is also available.
Quick Links to Other Spherical Singlets
Plano-Convex Bi-Convex Best Form Plano-Concave Bi-Concave Positive Meniscus Negative Meniscus

Below is the transmission curve for a 10 mm thick uncoated sample of UV fused silica when the incident light is normal to the surface. Please note that this is the measured transmission, including surface reflections.

UVFS Transmission
Click to Enlarge
Click Here for Raw Data

The lenses sold on this page are also available with broadband antireflective coatings, the reflectance traces of which are shown in the graph below.

These high-performance multilayer AR coatings have an average reflectance of less than 0.5% (per surface) across the specified wavelength ranges and provide good performance for angles of incidence (AOI) between 0° and 30° (0.5 NA). The plot shown below indicates the performance of the standard coatings in this family as a function of wavelength. Broadband coatings have a typical absorption of 0.25%, which is not shown in the reflectance plots.

Thorlabs' Standard Broadband Antireflection Coatings


Posted Comments:
yaoming_shen  (posted 2015-03-03 09:20:45.073)
I can not find the Zemax file. Can you please send me a copy? Thanks. My email address is yaoming_shen@amat.com
myanakas  (posted 2015-03-05 08:42:48.0)
Response from Mike at Thorlabs: Thank you for your feedback. We have uploaded the Zemax files for these lenses. They can be found by clicking on the red "Docs" icon next to the blue item number. I have also contacted you directly with the files.

Ø1/2" Mounted UVFS Plano-Convex Lenses, Uncoated

Item #Optic
Diameter
Focal LengthDiopteraRadius of CurvatureCenter ThicknessEdge ThicknessbBack Focal LengthWorking
Distance
HousingReference
Drawing
LA4647-ML 1/2" 20.0 mm +50.0 9.2 mm 4.3 mm 1.8 mm 17.0 mm 14.2 mm SM05-Threaded
Mount
Plano-Convex Lens Drawing
LA4936-ML 1/2" 30.0 mm +33.3 13.8 mm 3.3 mm 1.8 mm 27.7 mm 24.9 mm
LA4130-ML 1/2" 40.0 mm +25.0 18.4 mm 2.9 mm 1.8 mm 38.0 mm 35.2 mm
LA4765-ML 1/2" 50.0 mm +20.0 23.0 mm 2.7 mm 1.8 mm 48.1 mm 45.3 mm
LA4327-ML 1/2" 75.0 mm +13.3 34.5 mm 2.4 mm 1.8 mm 73.4 mm 70.6 mm
LA4600-ML 1/2" 100.0 mm +10.0 46.0 mm 2.2 mm 1.8 mm 99.4 mm 95.6 mm
  • Reciprocal of the Focal Length in Meters
  • Edge Thickness Given Before 0.2 mm at 45° Typical Chamfer
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
LA4647-ML Support Documentation
LA4647-MLCustomer Inspired! Ø1/2" UVFS Plano-Convex Lens, SM05-Threaded Mount, f = 20.0 mm, Uncoated
$104.04
Today
LA4936-ML Support Documentation
LA4936-MLCustomer Inspired! Ø1/2" UVFS Plano-Convex Lens, SM05-Threaded Mount, f = 30.0 mm, Uncoated
$97.67
Today
LA4130-ML Support Documentation
LA4130-MLCustomer Inspired! Ø1/2" UVFS Plano-Convex Lens, SM05-Threaded Mount, f = 40.0 mm, Uncoated
$92.82
Today
LA4765-ML Support Documentation
LA4765-MLCustomer Inspired! Ø1/2" UVFS Plano-Convex Lens, SM05-Threaded Mount, f = 50.0 mm, Uncoated
$85.17
Today
LA4327-ML Support Documentation
LA4327-MLCustomer Inspired! Ø1/2" UVFS Plano-Convex Lens, SM05-Threaded Mount, f = 75.0 mm, Uncoated
$83.90
Today
LA4600-ML Support Documentation
LA4600-MLCustomer Inspired! Ø1/2" UVFS Plano-Convex Lens, SM05-Threaded Mount, f = 100.0 mm, Uncoated
$76.25
Today

Ø1" Mounted UVFS Plano-Convex Lenses, Uncoated

Item #Optic
Diameter
Focal LengthDiopteraRadius of CurvatureCenter ThicknessEdge ThicknessbBack Focal LengthWorking
Distance
HousingReference
Drawing
LA4052-ML 1" 35.0 mm +28.5 16.1 mm 8.2 mm 2.0 mm 29.4 mm 25.6 mm SM1-Threaded
Mount
Plano-Convex Lens Drawing
LA4306-ML 1" 40.0 mm +25.0 18.4 mm 7.1 mm 2.0 mm 35.1 mm 32.37 mm
LA4148-ML 1" 50.0 mm +20.0 23.0 mm 5.8 mm 2.0 mm 46.0 mm 43.2 mm
LA4725-ML 1" 75.0 mm +13.3 34.5 mm 4.4 mm 2.0 mm 72.0 mm 69.2 mm
LA4380-ML 1" 100.0 mm +10.0 46.0 mm 3.8 mm 2.0 mm 97.4 mm 94.6 mm
LA4236-ML 1" 125.0 mm +8.0 57.5 mm 3.4 mm 2.0 mm 122.7 mm 118.9 mm
LA4874-ML 1" 150.0 mm +6.6 69.0 mm 3.2 mm 2.0 mm 147.8 mm 144.0 mm
LA4924-ML 1" 175.0 mm +5.7 80.5 mm 3.0 mm 2.0 mm 172.9 mm 169.1 mm
LA4102-ML 1" 200.0 mm +5.0 92.0 mm 2.9 mm 2.0 mm 198.0 mm 194.2 mm
LA4158-ML 1" 250.0 mm +4.0 115.0 mm 2.7 mm 2.0 mm 248.2 mm 244.4 mm
LA4579-ML 1" 300.0 mm +3.3 138.0 mm 2.6 mm 2.0 mm 298.2 mm 294.4 mm
LA4184-ML 1" 500.0 mm +2.0 230.0 mm 2.4 mm 2.0 mm 498.4 mm 494.6 mm
LA4716-ML 1" 750.0 mm +1.3 345.1 mm 2.2 mm 2.0 mm 748.5 mm 744.7 mm
LA4663-ML 1" 1000.0 mm +1.0 460.1 mm 2.2 mm 2.0 mm 998.5 mm 994.7 mm
  • Reciprocal of the Focal Length in Meters
  • Edge Thickness Given Before 0.2 mm at 45° Typical Chamfer
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
LA4052-ML Support Documentation
LA4052-ML Ø1" UVFS Plano-Convex Lens, SM1-Threaded Mount, f = 35.0 mm, Uncoated
$154.02
Today
LA4306-ML Support Documentation
LA4306-ML Ø1" UVFS Plano-Convex Lens, SM1-Threaded Mount, f = 40.0 mm, Uncoated
$123.42
Today
LA4148-ML Support Documentation
LA4148-ML Ø1" UVFS Plano-Convex Lens, SM1-Threaded Mount, f = 50.0 mm, Uncoated
$118.32
Today
LA4725-ML Support Documentation
LA4725-ML Ø1" UVFS Plano-Convex Lens, SM1-Threaded Mount, f = 75.0 mm, Uncoated
$109.14
Today
LA4380-ML Support Documentation
LA4380-ML Ø1" UVFS Plano-Convex Lens, SM1-Threaded Mount, f = 100.0 mm, Uncoated
$107.10
Today
LA4236-ML Support Documentation
LA4236-MLCustomer Inspired! Ø1" UVFS Plano-Convex Lens, SM1-Threaded Mount, f = 125.0 mm, Uncoated
$100.98
Today
LA4874-ML Support Documentation
LA4874-MLCustomer Inspired! Ø1" UVFS Plano-Convex Lens, SM1-Threaded Mount, f = 150.0 mm, Uncoated
$98.43
Today
LA4924-ML Support Documentation
LA4924-MLCustomer Inspired! Ø1" UVFS Plano-Convex Lens, SM1-Threaded Mount, f = 175.0 mm, Uncoated
$96.90
Today
LA4102-ML Support Documentation
LA4102-MLCustomer Inspired! Ø1" UVFS Plano-Convex Lens, SM1-Threaded Mount, f = 200.0 mm, Uncoated
$100.22
Today
LA4158-ML Support Documentation
LA4158-MLCustomer Inspired! Ø1" UVFS Plano-Convex Lens, SM1-Threaded Mount, f = 250.0 mm, Uncoated
$94.86
Today
LA4579-ML Support Documentation
LA4579-MLCustomer Inspired! Ø1" UVFS Plano-Convex Lens, SM1-Threaded Mount, f = 300.0 mm, Uncoated
$98.43
Today
LA4184-ML Support Documentation
LA4184-MLCustomer Inspired! Ø1" UVFS Plano-Convex Lens, SM1-Threaded Mount, f = 500.0 mm, Uncoated
$93.59
Today
LA4716-ML Support Documentation
LA4716-MLCustomer Inspired! Ø1" UVFS Plano-Convex Lens, SM1-Threaded Mount, f = 750.0 mm, Uncoated
$92.82
Today
LA4663-ML Support Documentation
LA4663-MLCustomer Inspired! Ø1" UVFS Plano-Convex Lens, SM1-Threaded Mount, f = 1000.0 mm, Uncoated
$92.57
Today

Ø2" Mounted UVFS Plano-Convex Lenses, Uncoated

Item # Optic
Diameter
Focal Length Dioptera Radius of Curvature Center Thickness Edge Thicknessb Back Focal Length Working Distance Housing Reference
Drawing
LA4464-ML 2" 60.0 mm +16.7 27.6 mm 19.8 mm 3.0 mm 46.4 mm 42.6 mm SM2-Threaded
Mount
Plano-Convex Lens Drawing
LA4078-ML 2" 75.0 mm +13.3 34.5 mm 14.2 mm 3.0 mm 65.3 mm 61.5 mm
LA4545-ML 2" 100.0 mm +10.0 46.0 mm 10.7 mm 3.0 mm 92.7 mm 88.9 mm
LA4904-ML 2" 150.0 mm +6.7 69.0 mm 7.8 mm 3.0 mm 144.6 mm 140.8 mm
LA4984-ML 2" 200.0 mm +5.0 92.0 mm 6.6 mm 3.0 mm 195.5 mm 191.7 mm
LA4538-ML 2" 250.0 mm +4.0 115.0 mm 5.8 mm 3.0 mm 246.0 mm 242.2 mm
LA4855-ML 2" 300.0 mm +3.3 138.0 mm 5.4 mm 3.0 mm 296.3 mm 292.5 mm
LA4782-ML 2" 500.0 mm +2.0 230.0 mm 4.4 mm 3.0 mm 497.0 mm 493.2 mm
LA4745-ML 2" 750.0 mm +1.3 345.1 mm 3.9 mm 3.0 mm 747.3 mm 743.5 mm
LA4337-ML 2" 1000.0 mm +1.0 460.1 mm 3.7 mm 3.0 mm 997.5 mm 993.7 mm
  • Reciprocal of the Focal Length in Meters
  • Edge Thickness Given Before 0.2 mm at 45° Typical Chamfer
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
LA4464-ML Support Documentation
LA4464-MLCustomer Inspired! Ø2" UVFS Plano-Convex Lens, SM2-Threaded Mount, f = 60.0 mm, Uncoated
$247.86
Today
LA4078-ML Support Documentation
LA4078-MLCustomer Inspired! Ø2" UVFS Plano-Convex Lens, SM2-Threaded Mount, f = 75.0 mm, Uncoated
$246.84
Today
LA4545-ML Support Documentation
LA4545-MLCustomer Inspired! Ø2" UVFS Plano-Convex Lens, SM2-Threaded Mount, f = 100.0 mm, Uncoated
$242.76
Today
LA4904-ML Support Documentation
LA4904-MLCustomer Inspired! Ø2" UVFS Plano-Convex Lens, SM2-Threaded Mount, f = 150.0 mm, Uncoated
$244.80
Today
LA4984-ML Support Documentation
LA4984-MLCustomer Inspired! Ø2" UVFS Plano-Convex Lens, SM2-Threaded Mount, f = 200.0 mm, Uncoated
$243.78
Today
LA4538-ML Support Documentation
LA4538-MLCustomer Inspired! Ø2" UVFS Plano-Convex Lens, SM2-Threaded Mount, f = 250.0 mm, Uncoated
$242.76
Today
LA4855-ML Support Documentation
LA4855-MLCustomer Inspired! Ø2" UVFS Plano-Convex Lens, SM2-Threaded Mount, f = 300.0 mm, Uncoated
$228.48
Today
LA4782-ML Support Documentation
LA4782-MLCustomer Inspired! Ø2" UVFS Plano-Convex Lens, SM2-Threaded Mount, f = 500.0 mm, Uncoated
$214.20
Today
LA4745-ML Support Documentation
LA4745-MLCustomer Inspired! Ø2" UVFS Plano-Convex Lens, SM2-Threaded Mount, f = 750.0 mm, Uncoated
$201.96
Today
LA4337-ML Support Documentation
LA4337-MLCustomer Inspired! Ø2" UVFS Plano-Convex Lens, SM2-Threaded Mount, f = 1000.0 mm, Uncoated
$201.96
Today

Ø75 mm Mounted UVFS Plano-Convex Lenses, Uncoated

Item # Optic
Diameter
Focal Length Dioptera Radius of Curvature Center Thickness Edge Thicknessb Back Focal Length Working Distance Housing Reference
Drawing
LA4384-ML 75.0 mm 90.0 mm +11.1 41.4 mm 26.9 mm 3.0 mm 71.6 mm 67.8 mm SM3-Threaded
Mount
Plano-Convex Lens Drawing
LA4372-ML 75.0 mm 150.0 mm +6.7 69.0 mm 14.1 mm 3.0 mm 140.4 mm 136.6 mm
LA4795-ML 75.0 mm 200.0 mm +5.0 92.0 mm 11.0 mm 3.0 mm 192.5 mm 188.7 mm
LA4246-ML 75.0 mm 500.0 mm +2.0 230.0 mm 6.1 mm 3.0 mm 495.8 mm 492.0 mm
  • Reciprocal of the Focal Length in Meters
  • Edge Thickness Given Before 0.2 mm at 45° Typical Chamfer
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
LA4384-ML Support Documentation
LA4384-MLCustomer Inspired! Ø75 mm UVFS Plano-Convex Lens, SM3-Threaded Mount, f = 90.0 mm, Uncoated
$528.36
Today
LA4372-ML Support Documentation
LA4372-MLCustomer Inspired! Ø75 mm UVFS Plano-Convex Lens, SM3-Threaded Mount, f = 150.0 mm, Uncoated
$465.12
Today
LA4795-ML Support Documentation
LA4795-MLCustomer Inspired! Ø75 mm UVFS Plano-Convex Lens, SM3-Threaded Mount, f = 200.0 mm, Uncoated
$432.48
Today
LA4246-ML Support Documentation
LA4246-MLCustomer Inspired! Ø75 mm UVFS Plano-Convex Lens, SM3-Threaded Mount, f = 500.0 mm, Uncoated
$343.74
Today
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